Terminology of ecology. Basic concepts of ecology

Ecology is the science of the relationships of living beings among themselves and with the nature around them, of the structure and functioning of supraorganismal systems.
The term “ecology” was introduced in 1866 by the German evolutionist Ernst Haeckel. E. Haeckel believed that ecology should study various shapes struggle for existence. In its primary meaning, ecology is the science of the relationship of organisms to the environment (from the Greek “oikos” - home, residence, shelter).
Ecology, like any science, is characterized by the presence of its own object, subject, tasks and methods (an object is a part of the surrounding world that is studied by a given science; the subject of a science is the most important essential aspects of its object).
The object of ecology is biological systems at the supraorganism level: populations, communities, ecosystems (Yu. Odum, 1986).
The subject of ecology is the relationship of organisms and superorganismal systems with the surrounding organic and inorganic environment (E. Haeckel, 1870; R. Whittaker, 1980; T. Fenchil, 1987).
All organisms on Earth exist under certain conditions. That part of nature that surrounds a living organism and with which it directly interacts is called the habitat. Individual properties or elements of the environment that affect the body are called environmental factors. Factors that are necessary for the existence of a certain species are called resource factors. Factors that lead to a decrease in the number of a species (to its elimination) are called eliminating factors.
There are three main groups of environmental factors: abiotic, biotic and anthropogenic.

Abiotic factors

general characteristics effects of environmental factors

Any organism must be adapted in a certain way to the effects of specific environmental factors. Various adaptations of organisms are called adaptations. Due to the diversity of adaptations, it is possible to distribute the survival rate of organisms depending on the intensity of the environmental factor.
The values ​​of the environmental factor that are most favorable for a given species are called optimal, or simply ecological optimum. The same factor values ​​that are unfavorable for a given species are called pessimal, or simply environmental pessimum. There is a law of ecological optimum, according to which the survival rate of organisms reaches a maximum when the values ​​of a given environmental factor are close to its average value.
In the simplest case, the dependence of survival on the action of one factor is described by normal distribution equations, which correspond to bell-shaped normal distribution curves. These curves are also called tolerance curves or Shelford curves.
As an example, consider the dependence of the density (survival) of a certain plant population on soil acidity.
It can be seen that populations of this plant species reach maximum density at pH values ​​close to 6.5 (slightly acidic soils). pH values ​​of approximately 5.5 to 7.5 form the ecological optimum zone, or zone of normal life activity, for this species. As the pH decreases or increases, the population density gradually decreases. pH values ​​less than 5.5 and more than 7.5 form two zones of ecological pessimum, or zones of depression. pH values ​​less than 3.5 and more than 9.5 form death zones in which organisms of a given species cannot exist.
Ecological niche

An ecological niche is the totality of all connections between a species and its habitat that ensure the existence and reproduction of individuals of a given species in nature.
The term ecological niche was proposed in 1917 by J. Grinnell to characterize the spatial distribution of intraspecific ecological groups.
Initially, the concept of an ecological niche was close to the concept of habitat. But in 1927, C. Elton defined an ecological niche as the position of a species in a community, emphasizing the special importance of trophic relationships. The domestic ecologist G.F. Gause expanded this definition: an ecological niche is the place of a species in an ecosystem.
In 1984, S. Spurr and B. Barnes identified three components of a niche: spatial (where), temporal (when) and functional (how). This niche concept emphasizes the importance of both the spatial and temporal components of the niche, including its seasonal and diurnal changes, taking into account circan and circadian biorhythms.

A figurative definition of an ecological niche is often used: a habitat is the address of a species, and an ecological niche is its profession (Yu. Odum).

In 1957-1965 J. Hutchinson defined an ecological niche as a part of the ecological hyperspace in which the existence and reproduction of a species is possible. In ordinary physical space, the position of a point is described by its projection onto three mutually perpendicular coordinate axes. When adding a time coordinate axis, a four-dimensional space-time is formed, which can no longer be represented graphically. Ecological hyperspace is an n-dimensional space in which the coordinates of points are determined by projections on the gradation axes of many environmental factors: abiotic, biotic, anthropogenic. Ecological hyperspace differs from the ecological spectrum in that it takes into account the interaction of environmental factors with each other in space and time.
An ecosystem is any unity that includes all organisms and the entire complex of physical and chemical factors and interacts with the external environment. Ecosystems are the basic natural units on the Earth's surface.
The doctrine of ecosystems was created by the English botanist Arthur Tansley (1935).
Ecosystems are characterized by various types of metabolism not only between organisms, but also between their living and nonliving components. When studying ecosystems, special attention is paid to functional connections between organisms, energy flows and the circulation of substances.
The spatiotemporal boundaries of ecosystems can be defined quite arbitrarily. An ecosystem can be long-term (for example, the Earth's biosphere), and short-term (for example, ecosystems of temporary reservoirs). Ecosystems can be natural or artificial. From the point of view of thermodynamics, natural ecosystems are always open systems (they exchange matter and energy with the external environment); artificial ecosystems can be isolated (exchanging only energy with the external environment).
Biogeocenoses. In parallel with the doctrine of ecosystems, the doctrine of biogeocenoses, created by Vladimir Nikolaevich Sukachev (1942), also developed.
Biogeocenosis is a set of homogeneous natural phenomena (atmosphere, vegetation, fauna and microorganisms, soil, rock and hydrological conditions) over a certain extent of the earth's surface, which has its own specific interactions of constituent components and a certain type of exchange of matter and energy between themselves and other phenomena nature and representing an internally contradictory unity located in constant movement, development.
Biogeocenoses are characterized by the following features:
- biogeocenosis is associated with a certain area of ​​the earth’s surface; unlike an ecosystem, the spatial boundaries of biogeocenoses cannot be drawn arbitrarily;
- biogeocenoses exist long time;
- biogeocenosis is a bioinert system, representing the unity of living and inanimate nature;
- biogeocenosis is an elementary biochorological cell of the biosphere (that is, a biological-spatial unit of the biosphere);
- biogeocenosis is an arena of primary evolutionary transformations (that is, the evolution of populations occurs in specific natural historical conditions, in specific biogeocenoses).
Thus, like an ecosystem, biogeocenosis represents the unity of a biocenosis and its inanimate habitat; in this case, the basis of biogeocenosis is biocenosis. The concepts of ecosystem and biogeocenosis are superficially similar, but in reality they are different. In other words, any biogeocenosis is an ecosystem, but not every ecosystem is a biogeocenosis.

Productivity of trophic levels
The amount of energy passing through a trophic level per unit area per unit time is called the productivity of the trophic level. Productivity is measured in kcal/ha·year or other units (in tons of dry matter per 1 hectare per year; in milligrams of carbon per 1 square meter or per 1 cubic meter per day, etc.).
The energy received at the trophic level is called gross primary productivity (for producers) or ration (for consumers). Part of this energy is spent on maintaining vital processes (metabolic costs, or respiration costs), part on the formation of waste (plant litter, excrement, molt skins and other waste in animals), part on biomass growth. Part of the energy spent on biomass growth can be consumed by consumers of the next trophic level.
The energy balance of a trophic level can be written as the following equations:
(1) gross primary productivity = respiration + litter + biomass growth
(2) diet = respiration + waste + biomass growth
The first equation applies to producers, the second - to consumers and decomposers.
The difference between gross primary productivity (diet) and respiration costs is called net primary productivity of the trophic level. The energy that can be consumed by consumers of the next trophic level is called the secondary productivity of the trophic level in question.
When energy moves from one level to another, part of it is irretrievably lost: in the form of thermal radiation (breathing costs), in the form of waste products. Therefore, the amount of highly organized energy constantly decreases during the transition from one trophic level to the next. On average, it arrives at this trophic level. 10% of the energy received at the previous trophic level; This pattern is called the “ten percent” rule, or the rule of the ecological pyramid. Therefore, the number of trophic levels is always limited (4-5 links), for example, already at the fourth level only 1/1000 of the energy received at the first level arrives.

Ecosystem dynamics
In emerging ecosystems, only part of the increase in biomass is spent on the formation of secondary products; organic matter accumulates in the ecosystem. Such ecosystems are naturally replaced by other types of ecosystems. The natural change of ecosystems in a certain territory is called succession. Example of succession: lake > overgrowing lake > swamp > peat bog > forest.
The following forms of succession are distinguished:
- primary - arise in previously uninhabited territories (for example, on unturfed sands, rocks); biocenoses that initially form under such conditions are called pioneer communities;
- secondary - occur in disturbed habitats (for example, after fires, in clearings);
- reversible - a return to a pre-existing ecosystem is possible (for example, birch forest > burnt forest > birch forest > spruce forest);
- irreversible - a return to a pre-existing ecosystem is impossible (for example, the destruction of relict ecosystems; a relict ecosystem is an ecosystem preserved from past geological periods);
- anthropogenic - arising under the influence of human activity.
The accumulation of organic matter and energy at trophic levels leads to increased ecosystem stability. During succession, in certain soil and climatic conditions, final climax communities are formed. In climax communities, the entire increase in biomass at the trophic level is spent on the formation of secondary products. Such ecosystems can exist indefinitely.
In degrading (dependent) ecosystems energy balance negative - the energy supplied to lower trophic levels is not enough for the functioning of higher trophic levels. Such ecosystems are unstable and can only exist with additional energy expenditure (for example, ecosystems of populated areas and anthropogenic landscapes). As a rule, in degrading ecosystems, the number of trophic levels is reduced to a minimum, which further increases their instability.

Ideas about the biosphere as a “region of life” and the outer shell of the Earth go back to J. B. Lamarck. The term “biosphere” was introduced by the Austrian geologist Eduard Suess (1875), who understood the biosphere as a thin film of life on the earth’s surface, which largely determines the “face of the Earth.” However, a holistic doctrine of the biosphere was developed by the Russian scientist Vladimir Ivanovich Vernadsky (1926).
Currently, there are many approaches to defining the concept of “biosphere”.
The biosphere is the geological shell of the Earth, formed during historical development organic world.
The biosphere is the active shell of the Earth, in which the total activity of living organisms manifests itself as a geochemical factor on a planetary scale.
The biosphere is the shell of the Earth, the composition, structure and energy of which are determined by the total life activity of living organisms; it is the largest known ecosystem.

Structure of the biosphere
The biosphere includes both the vitasphere (the totality of living organisms) and the total results of the activities of pre-existing organisms: the atmosphere, the hydrosphere, the lithosphere.
The area in which living organisms regularly occur is called the eubiosphere (biosphere proper). Total thickness of the eubiosphere. 12-17 km.
In relation to the eubiosphere, the following layers of the biosphere are distinguished:
- apobiosphere - lies above the parabiosphere - living organisms are not found;
- parabiosphere - lies above the eubiosphere - organisms enter by chance;
- eubiosphere - the biosphere itself, where organisms are found regularly;
- metabiosphere - lies under the eubiosphere - organisms enter by chance;
- abiosphere - lies under the metabiosphere - living organisms are not found.
Aerobiosphere - includes the lower part of the atmosphere. The aerobiosphere includes:
a) tropobiosphere - up to a height of 6...7 km;
b) altobiosphere - to the lower boundary of the ozone screen (20...25 km).
The ozone layer is a layer of the atmosphere with a high ozone content. The ozone screen absorbs hard ultraviolet radiation from the Sun, which has a detrimental effect on all living organisms. In recent decades, “ozone holes”—areas with low ozone content—have been observed in the polar regions.
Hydrobiosphere - includes the entire hydrosphere. The lower boundary of the hydrobiosphere. 6...7 km, in some cases - up to 11 km. The hydrobiosphere includes:
a) aquabiosphere - rivers, lakes and others fresh waters;
b) marinobiosphere - seas and oceans.
Terrabiosphere - land surface. The terrabiosphere includes:
a) phytosphere - habitat zone of terrestrial plants;
b) pedosphere - a thin layer of soil.
Lithobiosphere. The lower boundary of the lithobiosphere. 2...3 km (less often - up to 5...6 km) on land, etc. 1...2 km below the ocean floor. Living organisms are rare in the lithobiosphere, but sedimentary rocks in the biosphere arose under the influence of the vital activity of organisms.
IN AND. Vernadsky identified 7 types of substances in the biosphere: living matter, biogenic matter (fossil fuels, limestones), inert matter (igneous rocks), bioinert matter (soil), radioactive matter, scattered atoms and matter of cosmic origin.
The functions of living matter in the biosphere are diverse:
- Energy - accumulation of solar energy during photosynthesis; All life phenomena on Earth occur due to solar energy.
- Gas - the composition of the modern atmosphere (in particular, the content of oxygen and carbon dioxide) has developed, to a large extent, under the influence of the vital activity of organisms.
- Concentration - as a result of the vital activity of organisms, all types of fossil fuels, many ores, soil organic matter, etc. were formed.
- Redox - during the life of living organisms, redox reactions constantly occur, ensuring the circulation and constant transformations of carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur, iron and other elements.
- Destructive - as a result of the destruction of dead organisms and the products of their vital activity, living matter is transformed into inert, biogenic and bioinert.
- Environment-forming - organisms transform physical and chemical environmental factors in various ways.
- Transport - transfer of matter against gravity and in the horizontal direction.

Relationship between the components of the biosphere
Plants are producers of organic matter, so it is with them that grazing chains, or grazing chains, always begin in ecosystems. Reducing microorganisms transfer elements from organic to extraorganic forms. Chemosynthetic organisms change the oxidation states of elements, converting them from insoluble to soluble form, and vice versa.
Thus, with the help of plants and microorganisms, the cycle of carbon, oxygen and mineral nutrition is carried out.
The total mass of living matter in the biosphere is 2,500,000,000,000 tons (or 2.5 trillion tons). The annual production of the Earth's plants exceeds 120 billion tons (in terms of dry matter). In this case, approximately 170 billion tons of carbon dioxide are absorbed, 130 billion tons of water are split, 120 billion tons of oxygen are released and 400·1015 kilocalories of solar energy are stored. About 2 billion tons of nitrogen and about 6 billion tons of phosphorus, potassium, calcium, magnesium, sulfur, iron and other elements are annually involved in the processes of synthesis and decay. Over 2 thousand years, all the oxygen in the atmosphere passes through plants.
The movement of elements along food chains (networks) is called biogenic migration of atoms. Mobile animals (birds, fish, large mammals) facilitate the movement of elements over considerable distances.

The basic laws of ecology were popularly formulated by the American ecologist B. Commoner.
First law: “Everything is connected to everything.” A small shift in one place is environmentally
ical network can cause significant and long-lasting consequences in completely different ways.
Second Law: “Everything has to go somewhere.” In essence, this is a reformulation of the well-known law of conservation of matter. B. Commoner writes: “One of the main reasons for the current crisis environment consists in the fact that huge quantities of different substances are extracted from the earth, where they were bound, and transformed into new, often very active and far from natural compounds” (“Closing Circle”, 1974).
Third Law: “Nature knows best.” Sustainable natural ecological systems are the most complex formations, and their organization occurred as a result of evolutionary development, selection from many options. Therefore, it is logical to assume that natural is the best option and each new option will be worse. But this does not mean that nature cannot be changed, improved, adapted to human interests; it just needs to be done competently, based on strict scientific knowledge about nature and taking into account all possible negative consequences.
The fourth law: “Nothing is given for free” or “You have to pay for everything.” The meaning of this law is that the world ecosystem is a single whole and, changing it to some insignificant extent in one
place, we must scientifically anticipate what changes may occur in other places. What man has taken from nature or damaged, he must correct and return. Otherwise, shifts will begin that are difficult not only to correct, but even to anticipate. Changes may develop that will threaten the existence of human civilization.

Abiotic environment –(from Greek a - prefix meaning “not”, “without” and bioticos - vital, living) a set of inorganic conditions (factors) for the habitat of organisms.

Agrobiocenosis –(from the Greek agros - field and biocenosis) a set of organisms living on agricultural lands occupied by crops or plantings of cultivated plants.

Adaptation – ( from late lat. adaptatio – adaptation) in biology, adaptation of the structure and functions of organisms (their populations) to local conditions of existence.

Accumulation- (from Latin accumulatiop - accumulation, gathering in a heap) accumulation and deposition of sediment, destruction products, formed due to the manifestation of various denudation processes.

Accumulation of pollutants – 1. Accumulation of various pollutants of anthropogenic origin in various environments: atmosphere, hydrosphere, soil. 2. Accumulation of contaminants in living organisms from the environment and through consumption of contaminated food.

Allelopathy – a specific form of biotic connections expressed in the interaction of plant organisms in phytocenoses; the chemical influence of one plant species on another through specifically acting secretions.

Amensalism – a form of biotic relationships in which for one of the interacting species the consequences of coexistence are negative, while the other receives neither harm nor benefit from it. This form of interaction is often found in plants. For example, light-loving herbaceous species growing under a spruce tree experience oppression as a result of strong shading by its crown, while for the tree itself their neighborhood may be indifferent.

Antibiosis – in one form or another, antagonistic relationships that limit or exclude the coexistence of species.

the level of direct and indirect impact of man and his economic system on nature and its individual components.

Area –(from Latin area - area, space) the area of ​​distribution of an organism on land or in the sea.

Atmosphere– (from the Greek atmos – steam, spharia – sphere) the outer gaseous shell of the Earth.

Out(o)ecology –(from the Greek autos - self and ecology) a section of ecology that studies the effect of various environmental factors (mainly abiotic) on certain types of organisms.

Batial –(from the Greek bathys - deep) the zone of the seabed accompanying the continental slope (from 200-500 to 3000 m). The upper limit of the shelf depends on the depth at which the gently sloping shelf turns into a relatively steep slope.

Benthal – part of the ocean floor inhabited by organisms .

Benthos –(from the Greek bentos - depth) a set of organisms living at the bottom of reservoirs on a variety of substrates.

Bioaccumulation – ( from Greek bios – life and lat. accumulatio - accumulation, gathering in a heap) accumulation in the body of pollutants coming from the environment through the lungs, skin and digestive tract.

Biogeocenosis –(from the Greek bios, ge – Earth and koinos – general) 1) A homogeneous area of ​​the earth’s surface with a certain composition of living (biocenosis) and inert (ground layer of the atmosphere, solar energy, soil, water column, etc.) components, united by the exchange of matter and energy into a single natural complex. The concept of B., introduced by V.N. Sukachev (1940), has become widespread in Russian literature.

Bioindicators (bioindication) –(from Greek bio and Latin indico - I indicate, determine) organisms or communities of organisms, the presence, quantity or developmental features of which serve as indicators of natural processes, conditions or anthropogenic changes in the environment.

Biological resources – include genetic resources, organisms or parts thereof, populations or any other biotic component of ecosystems that have actual or potential benefit or value to humanity.

Biological rhythms – periodically repeating changes in the intensity and nature of biological processes and phenomena.

Biome –(English biome from Greek bios - life and Latin -oma - suffix denoting a collection) a collection of different groups of organisms and their habitats in a certain landscape-geographical zone.

Biomass –(from Greek bios - life and lat. massa - lump, piece) the total mass of all organisms on Earth in individual ecosystems, a group of species, individual species, etc. May refer to the raw (living) state of organisms or the dry state of their body.

Biosphere –(from the Greek bios - life and spharia - ball) the habitat of living organisms, the composition, structure and energy of which is determined by the activity of the entire set of living organisms - biota.

Biota – a historically established collection of plants and animals united by an area of ​​distribution.

Biotic environment – a collection of living organisms that influence other organisms through their activities.

Biotope –(from the Greek bios - life and topos - place) a section of a reservoir or land with the same type of relief conditions, climate and other abiotic factors, occupied by a certain biocenosis.

Biocenosis –(from the Greek bios - life and koinos - general) a collection of animals, plants, fungi and microorganisms that jointly inhabit an area of ​​land or a body of water. B. is an integral part of biogeocenosis.

Ecosystem buffering – the ability of ecosystems to withstand disturbing influences (including anthropogenic ones), to preserve their structure, functional characteristics and closed circulation of substances.

View - a set of individuals that have common morphophysiological characteristics, have a common evolutionary fate, are capable of interbreeding with each other, forming unified system genomes occupying a single or partially broken area.

Types - batteries – organisms capable of accumulating pollutants in quantities many times higher than their content in the environment.

Indicator species – organisms highly sensitive to certain pollutants, reflecting changes in the natural background.

Gene pool –(from the Greek genes - giving birth, born and French fond - foundation) the totality of genes of the individuals that make up a given population or species.

Herbicides –(from Latin herba - grass and caedo - kill) substances from the group of pesticides for the destruction of mainly weeds and other unwanted vegetation.

Hydrobionts –(from the Greek hydor - water and bios - life) organisms living in the aquatic environment.

Hypobiosis – state of decreased vital activity. Representatives of many species bury themselves in the mud and wait unfavourable conditions environment. This is how scale insects, planarians, oligochaete worms, mollusks, and some fish behave. Many protozoa form cysts, for example, ciliates, rhizopods, sunflowers.

Homeostasis – the ability to maintain persistence with correlated processes that maintain most stable states. The internal environment of the organism (system) actively participates in G. on the basis of a feedback mechanism, establishing a balance between need and opportunity.

Ecosystem homeostasis –(from the Greek homoios - similar, identical and stasis - state) the ability of an ecosystem to auto-regulate when environmental conditions change. G.e. arises as a result of the interaction of substance cycles and energy flows, as well as “feedback” signals from subsystems.

Detritus –(from Latin detritus - worn out) dead organic matter, for example, fallen leaves, twigs and other remains of plant and animal origin, present in any ecosystem and subject to decomposition under the influence of soil and aquatic organisms.

Detritivores –(from Latin detritus - worn out and Greek phagos - devourer) animals that feed on detritus, i.e. dead, partially decomposed organic matter along with the microorganisms it contains. For example, earthworms, crustaceans.

Law of the minimum (Liebig's law) – productivity different cultures is directly dependent on the content of nutrients in the soil, which are at a minimum.

Replaceable natural resources – natural resources, which in the process of use with the development of the scientific and technical process can be replaced now or in the future by other types.

Zoobenthos –(from the Greek zoon - animal and benthos - depth) bottom fauna, animal benthos, a collection of animals living at the bottom of a reservoir.

Zooplankton –(from the Greek zoon - animal and planktos - soaring) a set of animals that inhabit the water column and are passively transported by currents.

Zoophagi– (from the Greek zoon - animal and phagos - eater) carnivores that feed on other animals

Exhaustible natural resources – natural resources, the consistent use of which can reduce them to a level at which their further exploitation becomes economically unfeasible or there is a threat of their complete disappearance.

Commensals – organisms that benefit from cohabitation with other organisms.

Cooperation (cooperation) – both species form a community. It is not mandatory, but living in a community benefits both species.

Survival curve – a graph showing the probability of individuals surviving to a certain age. Such graphs are constructed and, as a rule, differ for groups within a species, distinguished by various characteristics.

Convergence – the process of developing signs of external similarity in unrelated forms of organisms if these species lead a similar lifestyle in similar environmental conditions. The convergence of characteristics in different forms affects those organs that are in direct contact with the external environment.

Consumers -(from English consumers) organisms that feed on organic substances accumulated by producers - autotrophs, and convert them into other organic substances.

Climax –(from English climax, plant climax) the final stage of succession; a plant community that is in relative agreement and dynamic equilibrium with the habitat environment (changes very slowly).

Lithosphere –(from the Greek lithos - stone, sphere) the solid outer shell of the Earth, with an average relative thickness of 16 kilometers. The thickness of the lake on the plains is 30-40 km, in the mountain ranges it is 50-75 km, and within the sea basins it is 5-6 km.

Local pollution – environmental pollution in the vicinity of industrial enterprises, construction sites, quarries, populated areas and other places that does not extend to large areas.

Habitat – a part of the earth's space, the boundaries of which are clearly delimited, covering a place with certain conditions (territory or water area), providing the entire development cycle of an organism, population or species as a whole, where this species is found.

Migration (animals and plants) – movement of animals and plants in space caused by changes in living conditions in their habitats or associated with their development cycle.

Monitoring –(English monitoring, Latin monitor - warning) a system of regular long-term observations in space and time, providing information about the state of the environment in order to assess the past, present and forecast in the future environmental parameters that are important to humans.

Mutualism – biotic relationships in which each species can live, grow, and reproduce only in the presence of the other. They live in symbiosis.

Inexhaustible natural resources – Part natural resources, the use of which by humans does not lead to a visible depletion of their reserves now and in the foreseeable future (solar energy, intraterrestrial heat, tidal energy).

Irreplaceable natural resources – part of natural resources that cannot be replaced by others now or in the foreseeable future (for example: environment-forming conditions of human life).

Neuston –(from the Greek neustos - floating) a community of microorganisms, plants and animals living in the surface film of sea and fresh waters. These are mainly small and medium sized organisms.

Nekton – aquatic animals capable of swimming fast and overcoming the force of currents, for example, fish, squid, dolphins.

Noosphere –(from the Greek noos - mind and spharia - ball) literally “thinking shell”, the sphere of the mind, the highest stage of development (according to V.I. Vernadsky) of the biosphere, associated with the emergence and formation of civilized humanity in it, with the period when intelligent human activity becomes the main determining factor of development on Earth. The concept of N. was introduced by the French mathematician and philosopher E. Leroy (1927) and P. Teilhard de Chardin (1930) and used by V.I. Vernadsky in the article “A few words about the noosphere” (1944).

Ozone layer(syn. ozone screen, ozonosphere) - a layer of the atmosphere at an altitude of approximately 10-50 km, characterized by an increased concentration of ozone (the gas molecules of which consist of three oxygen atoms - O 3), practically coincides with the stratosphere of the atmosphere. Lower limit O.s. at the poles it drops to 7-8 km, and at the equator it rises to 17-18 km. Thickness OS on average only 3 mm, which varies from 2 mm at the equator to 4.5 mm at high latitudes. O.S. absorbs ultraviolet radiation, thereby protecting all life on Earth from the harmful effects of ultraviolet radiation.

Environment - 1) A complex of all objects, phenomena and processes external to a given organism, population or community of organisms, but interacting with them. Interaction occurs through the cycle of substances. 2) The set of natural, natural-anthropogenic and anthropogenic objects, phenomena and processes external to a person, with which he interacts in the process of his activities, which is why the term “human environment” is often used.

Oligotrophs – organisms (plants, microorganisms) developing in an environment with low concentration nutrients.

Greenhouse effect - effect of warming up the lower layers of the atmosphere near the earth's surface, caused by the absorption of long-wave (infrared) radiation from the earth's surface. The main reason for this natural process is the content in the atmosphere of water vapor, carbon dioxide and some other gases (nitrogen dioxide, methane), the molecules of which absorb the thermal radiation of the Earth. They are called greenhouse gases.

Pedobionts – inhabitants of various layers of soil.

Pelagial –(from the Greek pelagos - sea) the thickness of water in the open part of a deep-sea reservoir.

Periphyton –(from the Greek peri - around, about and phyton - plant) a community of aquatic fouling organisms that cover objects and objects submerged in water - stones, piles, large plants, the bottoms of ships, etc.

Plankton –(from the Greek planktos - wandering) organisms living in suspension in natural waters, usually unable to move independently and therefore transported by currents. If these are plants, then they talk about phytoplankton, if they are animals, then they talk about zooplankton.

Population density – number of individuals (biomass) of a population per unit of space or volume. Being a species-specific ecological characteristic, population density significantly depends on environmental factors.

Population –(from Latin populus - people, population) a set of homogeneous individuals interacting with each other, having a common habitat in the form of a continuous area, within which their reproduction and life occur.

Shelford's rule (law of tolerance) – one of the fundamental principles of ecology, according to which the presence or prosperity of a population of any organisms in a given habitat depends on a complex of environmental factors, each of which the organism has a certain range of endurance (tolerance). The range of tolerance for each factor is limited by its minimum and maximum values, within which only the organism can exist.

Stability limit – maximum tolerated by the body, community, etc. impact (with preservation of their structure and functional features).

Maximum permissible concentration (MPC) – the maximum concentration of harmful substances in the soil, air or water environment, above which their negative impact on human health and the environment is noted. Established by law or recommended by competent authorities.

Producer(s) –(from Latin producentis - creating) autotrophic organisms that produce organic matter from inorganic matter using photosynthesis or chemosynthesis. These are mainly green plants, including phytoplankton, that use the energy of the Sun.

Profundal –(from Latin profundus - deep) the deep part of the lake, into which wind-wave mixing and sunlight do not penetrate.

Regional pollution – environmental pollution found within a large territory, but not covering the entire planet (for example: pollution of the World Ocean with petroleum products, waters of intensive farming regions with phosphorus and nitrogen compounds, the atmosphere of industrialized areas with nitrogen oxides, sulfur, dust).

Sinusia –(from the English synusium) a structural part of a phytocenosis, characterized by a certain composition, ecologically more or less similar species, belonging to one life form. It has spatial (or temporal) isolation, and therefore a special phytocenotic environment.

Community – collection of living organisms together different types, representing a certain ecological unity (for example, phytoplankton of a reservoir, soil animals of a forest area). Sometimes biocenosis is defined as the totality of all organisms (plants, animals, microorganisms) inhabiting an area of ​​land or a body of water, and is interpreted as a synonym for the term “biocenosis.” There are also C. of plants - phytocenosis and C. of animals - zoocenosis.

Stenobiont –(from Greek stenos - narrow and Greek biontos - living) an organism capable of living in conditions of constancy of any environmental factor or group of interacting factors. Stenobionticity can be expressed in relation to temperature (stenothermic organisms), salinity (stenohaline), hydrostatic pressure (stenobate). Among S. there may be organisms that require an increased value of some factor (they are indicated by adding the ending - phyl - thermophiles, hygrophiles, etc.). Species or individuals that require reduced doses or absence of it (indicated by adding the ending - phob - calcephobe, gallophobe, etc.).

Stress –(from Latin stress - tension) 1) The state of stress in the body is a set of physiological reactions that occur in the human or animal body (possibly in plants) in response to the influence of various unfavorable, or, conversely, extremely favorable factors.

Sublittoral –(from Latin sub - under and litoralis - coastal) a transitional zone between the littoral and profundal areas of the lake, also called the coastal sandbank.

Succession –(from Latin successio - continuity, inheritance) development of an ecosystem, which consists of changes in species structure and biocenotic processes over time. In other words, this is a sequential change in time of some biocenoses by others on a certain area of ​​the earth's surface, which with an increasing degree of accuracy ensure the closure of the biochemical cycle of substances.

Supralittoral –(from Latin supra - above, above and litoralis - coastal) splash zone, a zone on the border of sea and land, lying above the littoral zone and not flooded during high tide. It is exposed to the action of the surf, covered with water during surge winds and strong storms.

Technogenesis – the process of changing natural complexes and biogeocenoses under the influence of human production activities.

Tolerance -(from Latin tolerantia - patience) the body’s ability to tolerate the adverse effects of one or another environmental factor. All organisms are characterized by an ecological minimum and an ecological maximum of the magnitude of the influencing factor; the range between these two values ​​represents the T limits.

Trophic chain (food chain) – relationships between organisms through which the transformation of matter and energy occurs in an ecosystem. In the shopping center When potential energy is transferred from link to link, most of it (80-90%) is lost, turning into heat. If we quantify this ratio, we get a food pyramid. T.Ts. are divided into two main types: pasture and detritus. In the pasture T.C. (chain of grazing) the basis is made up of autotrophic organisms, then come the herbivorous animals that consume them, then first-order predators (consumers), and second-order predators. In detrital T.c. (decomposition chains), most common in forests, most of the plants are not eaten, but die and undergo decomposition by saprophytic organisms and mineralization.

Ultraabisal –(from Latin ultra - above, more and Greek abyssos - bottomless) zone of greatest ocean depths (6-11 km), confined to oceanic trenches located along continents (Peruvian-Chilean) or island chains (Japanese, Mariana) total area U. less than 1.5% of the ocean floor.

Soil fauna – There are several ecological groups of soil animals: 1) microfauna – microscopic animals ranging in size from 2 to 100 microns. These include protozoa, rotifers, nematodes; 2) mesofauna – this group includes animals with body sizes from tenths to 2-3 mm, for example, mites, springtails, two-tailed fish, millipedes; 3) macrofauna – soil animals with body sizes from 2 to 20 mm. These are insect larvae, earthworms, mole crickets, centipedes; 4) megafauna - These are large shrews, mainly mammals. A number of species spend their entire lives in the soil (moles, mole rats, mole rats, zokors), or part of their life cycle (gophers, marmots, rabbits, badgers, etc.).

Phytobenthos –(from the Greek phyton - plant and benthos - depth), bottom vegetation, a set of plant organisms living on the bottom of rivers and reservoirs.

Phytoplankton- (from the Greek phyton - plant and planktos - soaring, wandering) a set of plant organisms passively floating and carried by currents in the water column, mainly microscopic algae, unicellular and colonial.

Phytophagous –(from the Greek phyton - plant and phagos - eater) herbivorous organisms, consumers of the 1st order. They provide the first stage of processing the biomass of living plants along the pasture chain.

Phytocenosis –(from the Greek phyton - plant and koinos - general) plant community, a collection of plants on a relatively homogeneous area of ​​the earth's surface, producing organic matter based on photosynthesis. F. is characterized by a certain species composition and structure, formed as a result of the selection of species capable of existing together with each other and with other organisms under certain conditions.

Fluctuation– these are reversible, multidirectional changes, when periods of aging and rejuvenation of populations alternate and generations continuously replace each other. Thus, the population size remains unchanged over a long period of time, and it retains its occupied area.

Background pollution – pollution of the environment by physical, chemical or biological agents found far from their sources and almost anywhere on the planet.

Background monitoring – monitoring, the main task of which is to record and establish indicators characterizing the natural background, as well as its global and regional differences and changes in the process of development of the biosphere.

Predation – a type of biotic relationship in which a predatory species feeds on other animals.

Eurybionts –(from the Greek “eury” and bios - life) animals or plants that can exist with wide changes in environmental factors. Thus, many terrestrial animals living in continental climates are able to withstand significant fluctuations in temperature (eurythermal organisms), humidity, solar radiation and other factors.

Euryphagy- (from the Greek “eury...” and phagos - eater) omnivorousness, feeding animals (euryphages) with a wide variety of plant and animal foods.

Ecological valence – the degree of adaptability of a species to changes in environmental conditions. It is expressed quantitatively by the range of environmental changes within which this type maintains normal functioning.

Ecological niche –(from the English ecological niche) a set of chemical, physical and biological factors necessary for the life of an organism that has certain environmental characteristics. The same species can occupy different ecological niches in different parts of its range; the same ecological niche, in different geographical locations, can be occupied by different species.

Environmental factor – any environmental condition or phenomenon (process) affecting the environment, to which living organisms and inert matter of nature react with adaptive reactions (beyond the adaptive abilities are factors that are lethal for organisms and irreversible changes in the quality of inert matter).

Ecosystem – to date, there has been a wide variety of definitions of the concept of E. 1. E. (N.F. Reimers. Nature Management.-M.: Mysl.-1990) - a) any community of living beings and its habitat, united into a single functional whole, arising on the basis of interdependence and cause-and-effect relationships that exist between individual environmental components. b) E. synonym for biogeocenosis. 2. E. (I.I. Dediu. Ecological encyclopedic Dictionary. - Chisinau: Moldavian Soviet Encyclopedia.-1989) is a term introduced into science by A. Tansley (1935) to designate any unity (of very different volume and rank), including all organisms (i.e. biocenosis) in a given area (biotope) and interacting with the physical environment in such a way that the flow of energy creates a well-defined trophic structure, species diversity and cycling of substances within the system. 3. E. (Yu.P. Khrustalev, G.G. Matishov. Ecological and geographical dictionary. - Apatity: Kola Scientific Center. - 1996) - a single natural or anthropogenically-natural complex, consisting of a set of living organisms and their environment habitats interconnected by the exchange of matter and energy and combined into a single functional whole

Ecotype – a group of individuals of a plant species adapted to certain soil and climatic conditions.

Environmental Science– environmental science.

Epipelagic – the lower boundary of the epipelagic zone (no more than 200 m) is determined by the penetration of sunlight in an amount sufficient for photosynthesis. Green plants cannot exist deeper than this zone.

Literature

Main:

1. Buzmakov V.V. Nature management and agricultural ecology / Buzmakov V.V., Moskaev Sh. A.-M., 2005.-477 p.

2. Gorelov A. A. Ecology: textbook for universities /A. A. Gorelov.-M.: Academy, 2006.- 400 p.

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4. Dmitriev V.V. Applied ecology: textbook for universities /V. V. Dmitriev, A. I. Zhirov, A. N. Lastochkin.-M.: Academy, 2008.-608 p.

5. Kolpakova V.P. Fundamentals of ecology: Textbook. manual for students / V.P. Kolpakova, N.D. Ovcharenko. – Barnaul: Publishing House of AGAU, 2005. –195 p.

6. Kolpakova V. P. Ecology: method. instructions for studying the discipline and performing tests/IN. P. Kolpakova.-Barnaul: Publishing House of AGAU, 2009.-22 p.

7. Korobkin V. I. Ecology: textbook for universities / Korobkin V. I., Peredelsky L. V. - Rostov-on-Don: Phoenix, 2003. - 576 p.

8. Korobkin V. I. Ecology: textbook for universities / Korobkin V. I., Peredelsky L. V. - Rostov-on-Don: Phoenix, 2004. - 576 p.

9. General ecology: textbook for universities / author.-comp. A. S. Stepanovskikh.-M.: UNITI, 2002.-510 p.

10. Rozanov S. I.. General ecology: a textbook for universities / Rozanov S. I. - St. Petersburg: Lan, 2005. - 288 p.

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Additional:

1. Vronsky V. A. Ecology: dictionary - reference book /V. A. Vronsky.-Rostov n/d: Phoenix, 2002.- 576 p.

2. Ignatov V.G. Ecology and economics of environmental management: Textbook for universities / Ignatov V.G., Kokin A.V. - Rostov-on-Don: "Phoenix", 2003. - 512 p.

3. Kalygin V. G. Industrial ecology: textbook for universities /V. G. Kalygin.-M.: Academy, 2004.-432 p.

4. Markov Yu.G. Social ecology: interaction between society and nature: textbook for universities / Markov Yu.G. - Novosibirsk: Sibirsk. Univ. publishing house, 2004.-544 p.

5. Markov Yu.G. Social ecology: interaction between society and nature: Textbook / Institute of Philosophy and Law SB RAS.-Novosibirsk: Lada; Science, 2001.-544 p.

6. Novikov Yu.V. Ecology, environment and people: Textbook for universities, secondary schools and colleges / Novikov Yu.V.-M.: FAIR PRESS, 2002.-560 p.

7. Ovcharenko N.D. Business games in the Ecology course: Guidelines for execution practical classes/AGAU; Comp.: N.D. Ovcharenko, O.G. Sidorova, O.E. Vlasova.-Barnaul: Publishing House of the ASAU, 2003.-21.

8. Potapov A.D. Ecology: Textbook for university students studying in the field of "Construction" /Potapov A.D.-M.: Higher School, 2002.-446 p.

9. Protasov V.F. Ecology, health and environmental protection in Russia: Educational and reference manual / Protasov V.F.-M.: Finance and statistics, 2001.-672 p.

10. Protasov V.F. Ecology: Terms and concepts. Standards, certification. Standards and indicators: Educational and reference manual / V.F. Protasov, A.S. Matveev.-M.: Finance and Statistics, 2001.-208 p.

11. Prokhorov B.B. Human ecology: a textbook for universities / Prokhorov B. B.-M.: Academy, 2003.-320 p.

12. Khotuntsev Yu.L. Ecology and environmental safety: Textbook for universities / Yu.L. Khotuntsev.-M.: Publishing Center "Academy", 2004.-480 p.

13. Ecology for technical universities / V.M. Garin, I.A. Klenova, V.I. Kolesnikov; Under general ed. V.M.Garina.-Rostov-on-Don: Phoenix, 200.- 1384 p.

Applications

Annex 1.

Ecology(from the Greek “oikos” - dwelling, “logos” - science) - the science of the patterns of relationships between organisms, species, communities and their habitat.
External environment - all conditions of living and inanimate nature under which an organism exists and which directly or indirectly affect the condition, development and reproduction of both individual organisms and populations.
Environmental factors(from Latin “factor” - cause, condition) - individual elements of the environment that interact with the body.
Abiotic factors(from the Greek “a” - negation, “bios” - life) - elements of inanimate nature: climatic (temperature, humidity, light), soil, orographic (relief).
Biotic factors - living organisms interacting and influencing each other.
Anthropogenic factor(from the Greek "anthropos" - man) - the direct impact of a person on organisms or the impact through a change in their environment.
The optimal factor is the most favorable intensity of the environmental factor for the body (light, temperature, air, humidity, soil, etc.).
Limiting factor - environmental factor that goes beyond the limits of the body’s endurance (beyond the permissible maximum or minimum): moisture, light, temperature, food, etc.
Endurance limit - a boundary beyond which the existence of an organism is impossible (ice desert, hot spring, upper layers of the atmosphere). For all organisms and for each species there are boundaries for each environmental factor separately.
Ecological plasticity- the degree of endurance of organisms or their communities (biocenoses) to the influence of environmental factors.
Climatic factors - abiotic environmental factors associated with the supply of solar energy, wind direction, humidity and temperature ratio.
Photoperiodism(from the Greek “photos” - light) - the need of organisms for a periodic change of a certain length of day and night.
Seasonal rhythm - the reaction of organisms to changing seasons, regulated by photoperiodism (with the onset of a short autumn day, leaves fall from the trees, animals prepare for overwintering; with the onset of a long spring day, plant regeneration begins and the vital activity of animals is restored).
The biological clock - the reaction of organisms to alternating periods of light and darkness of a certain duration during the day (rest and activity in animals, daily rhythms of movement of flowers and leaves in plants, rhythmicity of cell division, the process of photosynthesis, etc.).
Hibernation - adaptation of animals to endure the winter season (winter sleep).
Anabiosis(from the Greek “anabiosis” - revival) is a temporary state of the body in which life processes are slowed down to a minimum and all visible signs of life are absent (observed in cold-blooded animals in winter and during the hot period of summer).
Winter peace - an adaptive property of a perennial plant, which is characterized by the cessation of visible growth and vital activity, the death of above-ground shoots in herbaceous life forms and the fall of leaves in tree and shrub forms.
Frost resistance - the ability of organisms to withstand low negative temperatures.

ECOLOGICAL SYSTEMS

Ecological system - a community of living organisms and their habitats, constituting a single whole based on food connections and methods of obtaining energy.
Biogeocenosis(from the Greek "bios" - life, "geo" - earth, "ce-nos" - general) - a stable self-regulating ecological system in which organic components are inextricably linked with inorganic ones.
Biocenosis - a community of plants and animals inhabiting the same territory, mutually connected in the food chain and influencing each other.
Population(from the French "population" - population) - a collection of individuals of the same species, occupying a certain area, freely interbreeding with each other, having a common origin, genetic basis and, to one degree or another, isolated from other populations of a given species.
Agrocenosis(from the Greek “agros” - field, “cenosis” - general) - a biocenosis artificially created by man. It is not able to exist for a long time without human intervention, does not have self-regulation and at the same time is characterized by high productivity (yield) of one or several species (varieties) of plants or animal breeds.
Producers(from the Latin "producentis" - producing) - green plants, producers of organic matter.
Consumers(from the Latin “consumo” - consume, consume) - herbivores and carnivores, consumers of organic matter.
Decomposers(from Latin “reducere” - reduction, simplification of structure) - microorganisms, fungi that destroy organic residues
Power circuits- chains of interconnected species that successively extract organic matter and energy from the original food substance; each previous link is food for the next.
Nutritional level - one link in the food chain, represented by producers, consumers or decomposers.
Power supply - complex relationships in an ecological system in which different components consume different objects and themselves serve as food for different members of the ecosystem.
Ecological pyramid rule - a pattern according to which the amount of plant matter that serves as the basis of the food chain is approximately 10 times greater than the mass of herbivorous animals, and each subsequent food level also has a mass 10 times less.
Self-regulation in biogeocenosis- the ability to restore internal balance after any natural or anthropogenic influence.
Population fluctuations - successive increase or decrease in the number of individuals in the population, which occurs due to changes in the season, fluctuations in climatic conditions, food harvest, natural disasters. Due to regular repetition, population fluctuations are also called life waves or population waves.
Population regulation - organization of measures to regulate the number of individuals through their extermination or breeding.
Endangered population - a population in which the number of species has decreased to an accepted minimum.
Commercial population - population, the extraction of individuals of which is economically justified and does not lead to the erosion of its resources.
Population overpopulation - a temporary state of a population in which the number of individuals exceeds the value corresponding to the conditions of normal existence. Most often associated with a change in biogeocenosis.
Life density - the number of individuals per unit area or volume of a tone or other environment.
Self-regulation of numbers - limiting the effect of an ecological system, reducing the number of individuals to the average norm.
Change of biogeocenoses - the successive natural development of an ecological system, in which some biocenoses are replaced by others under the influence of natural environmental factors: swamps are formed in place of forests, and meadows are formed in place of swamps. A change in biogeocenoses can also be caused by natural disasters (fire, flood, windfall, mass reproduction of pests) or human influence (deforestation, drainage or irrigation of land, earthworks).
Restoration of biocenosis - It is more natural to develop a sustainable ecological system capable of self-healing, which takes place in several stages over decades (after cutting down or a fire, a spruce forest is restored in more than 100 years) -
Artificial restoration of biocenosis - a set of measures to ensure the resumption of the previous biocenosis by sowing seeds, planting tree seedlings, and returning disappeared animals.
Phytocenosis(from the Greek “phyton” - plant, “cenosis” - general) plant community, historically formed as a result of a combination of interacting plants in a homogeneous area of ​​territory. It is characterized by a certain species composition, life forms, layering (aboveground and underground), abundance (frequency of occurrence of species), placement, aspect (appearance), vitality, seasonal changes, development (change of communities).

Abiotic factors – effects on the body of components of inanimate nature.

Autotrophs – organisms that use carbon dioxide as a carbon source, that is, organisms capable of creating organic substances from inorganic substances - carbon dioxide, water, mineral salts (plants and some bacteria). These include phototrophs And chemotrophs.

Agroecosystems (agricultural ecosystems, agrocenoses) – artificial ecosystems, arising as a result of human agricultural activity (arable lands, hayfields, pastures).

Morphological adaptations – changes in the structure of organisms. For example, leaf modification in desert plants.

Physiological adaptations – changes in the physiology of organisms. For example, the camel's ability to provide moisture to the body by oxidizing fat reserves.

Ethological adaptations – changes in the behavior of organisms. For example, seasonal migrations of mammals and birds, hibernation in winter.

Adaptation – adaptation to the environment developed in organisms during the process of evolution.

Allelopathy(antibiosis) is a special case of amensalism, in which waste products of one organism are released into the external environment, poisoning it and making it unsuitable for the life of another. Common in plants, fungi, and bacteria.

Allergens – factors that can cause allergies. Allergens can be pathogenic and non-pathogenic microbes, house dust, animal hair, pollen, medications, gasoline, chloramine, meat, vegetables, fruits, berries, etc.

Allergy – perverted sensitivity or reactivity of the body to a particular substance, the so-called allergen.

Amensalism – relationships in which one organism influences another and suppresses its vital activity, while it itself does not experience any negative influences from the suppressed one. For example, spruce and lower tier plants.

Anabiosis – complete temporary stop of life. In a state of suspended animation, organisms become resistant to various influences (rotifers, tardigrades, small nematodes, plant seeds and spores, bacterial and fungal spores). Anabiosis is a rather rare phenomenon and is an extreme state of rest in living nature; the state of suspended animation is possible only with almost complete dehydration of organisms. Cm. Hypobiosis And Cryptobiosis.

Obligate anaerobes – organisms that are unable to live in an oxygen environment (some bacteria).

Anaerobes facultative– organisms that can live both in the presence of oxygen and without it (some bacteria and fungi).

Anemophilia – a method of pollinating plants by wind. Anemophilous plants include all gymnosperms and about 10% of angiosperms (beech, birch, walnut, hemp, casuarina, goosefoot, sedge, cereals, etc.).

Anemochory – dispersal by air currents. Anemochory is characteristic of spores, seeds and fruits of plants, protozoan cysts, small insects, spiders, etc.

Antibiosis – cm. Allelopathy.

Anthropogenesis – the origin of man, his formation as a species.

Anthropogenic factors – the impact of human activity on the body.

Anthropogenic cycle (metabolism) of substances – the cycle (metabolism) of substances, the driving force of which is human activity. Due to the openness of the anthropogenic cycle, it is often called exchange.

Anthroposphere – the sphere of the Earth where humanity lives and where it temporarily penetrates (with the help of satellites, etc.). The concept of “anthroposphere” is used to characterize the spatial position of humanity and its economic activities.

Anthropocentrism – type public consciousness, based on ideas about “human exceptionalism”, the opposition of man to nature.

Upwelling – the rise of cold waters from the depths of the ocean, when winds move water from a steep continental slope, and in return, enriched water rises from the depths biogenic elements.

Area – the space in which population or view generally occurs throughout its life.

Atmosphere – the continuous air envelope of the Earth, consisting of a mixture of gases, water vapor and dust particles.

Outwelling – brought nutrients from land into coastal water bodies, which are ecotones between freshwater and marine ecosystems(estuaries, estuaries, river mouths, coastal bays, etc.).

Autecology(ecology of individuals, factorial ecology) – a branch of ecology that studies the relationship of individuals (organisms) with the environment.

Acidophilus – plants that live in soils with pH<6,7.

Aerobes – organisms that can live only in an oxygen environment (animals, plants, some bacteria and fungi).

Basiphila – plants living on soils with pH>7.0.

Bental – the bottom of the ocean or sea as a habitat for bottom organisms – benthos.

Benthos – organisms living on the bottom and in the soil (attached algae and higher plants, crustaceans, mollusks, starfish, etc.). Highlight phytobenthos And zoobenthos.

Nutrient – non-living bodies formed as a result of the vital activity of living organisms (some sedimentary rocks: limestone, chalk, etc., as well as oil, gas, coal, atmospheric oxygen, etc.).

Nutrients – chemical elements which are included

into living organisms and at the same time perform biological functions.

Biogeochemical cycle (biogeochemical cycles) – Part biological cycle, composed of exchange cycles of water, carbon, nitrogen, oxygen, phosphorus, sulfur and others biogenic elements.

Biogeocenosis – a homogeneous area of ​​the earth's surface with a certain composition of living things (biocenosis) and inert (biotope) components combined by metabolism and energy into a single natural complex.

Bioindicators – living organisms, by the presence, condition and behavior of which one can judge changes in the environment.

Bioindication – detection and identification of biologically and environmentally significant anthropogenic loads based on the reaction of living organisms and their communities to them.

Bioinert substance – bioinert bodies, which are the result of the joint activity of living organisms and geological processes (soils, silts, weathering crust, etc.).

Biological products (productivity) – growth biomass in an ecosystem created per unit of time. It is divided into primary And secondary products.

Biological rhythms – periodically repeating changes in the intensity and nature of biological processes and phenomena. For example, rhythmicity in cell division, DNA and RNA synthesis, hormone secretion, daily movement of leaves and petals towards the Sun, autumn leaf fall, seasonal lignification of wintering shoots, seasonal migrations of birds and mammals, etc.

Biological clock of the body– endogenous biological rhythms, giving the body the opportunity to navigate in time and prepare in advance for upcoming environmental changes.

Biological (biotic) cycle– circulation of substances, the driving force of which is the activity of living organisms. The main source of energy in the cycle is solar radiation, which generates photosynthesis.

Biome – a set of different groups of organisms and their habitats in a certain landscape-geographical zone (for example, in the tundra, taiga, steppe, etc.).

Biomass – mass of organisms of a certain group (producers, consumers, decomposers) or the community as a whole.

Biosphere – the shell of the Earth, the composition, structure and properties of which are, to one degree or another, determined by the present or past activities of living organisms.

Biosphere reserves – components of the series state natural reserves, used for background monitoring of biosphere processes.

Biota – a historically established collection of living organisms united by a common area of ​​distribution. For example, tundra biota, soil biota, etc.

Biotic factors – influence on the body of other living organisms.

Biotope – a certain territory with its characteristic abiotic environmental factors habitat (climate, soil).

Biotrophs – heterotrophic organisms that use other living organisms as food. These include zoophagi And phytophages.

Biocenosis – totality populations different species, living in a certain territory.

Gross primary production – general biomass, created by plants during photosynthesis. Part of it is spent on maintaining the life of plants - spending on respiration (40–70%). The remainder is called net primary production.

Demographic "explosion" – a sharp increase in population, as a result of a decrease in mortality against a background of high birth rates. Its causes are associated with changes in socio-economic or general environmental living conditions (including the level of healthcare).

Biological species – a set of individuals with hereditary similarity of morphological, physiological and biochemical characteristics, capable of crossing with the formation of fertile offspring, adapted to certain living conditions and occupying a certain area in nature (area).

Species structure biocenosis – number of species forming a given biocenosis, and the ratio of their number or mass.

Species diversity of biocenosis – number of species in a given community. There is α-diversity - the diversity of species in a given habitat, and β-diversity - the sum of all species of all habitats in a given area.

Vicarious (replacing) species – similar in ecology, but not related species, capable of occupying the same ecological niches.

Violents(siloviki) - species that suppress all competitors (for example, trees forming indigenous forests).

Renewable natural resources which are constantly restored as they are used ( animal world, vegetation, soil).

Age structure(age composition) of the population – ratio in populations individuals of different age groups.

"Second Nature" – changes natural environment, artificially caused by people and characterized by a lack of self-maintenance, that is, gradually collapsing without the supporting influence of man (arable lands, forest plantations, artificial reservoirs, etc.).

Secondary products– biomass, consumers.

"Minor" species - few and rare in biocenosis kinds.

Survival – absolute number of individuals (or percentage of the original number of individuals) preserved in populations for a certain period of time.

Altitudinal zone – a natural change in the natural environment with an ascent into the mountains from their base to the peaks.

Halophiles – animals of saline soils. Halophytes – plants of saline soils.

Heliophytes obligate (light-loving plants) – plants living in good light conditions.

Heliophytes facultative (shade-tolerant plants) – plants that can live both in conditions of good lighting and in shaded conditions.

Helophytes – variety hydrophytes – plants that live in swamps and marshy meadows.

Hemicryptophytes – plants whose renewal buds are located at the level of the soil surface, or in its most superficial layer, often covered with litter (most perennial grasses).

Genetic structure of the population – ratio in populations various genotypes and alleles.

Gene pool – the totality of genes of all individuals populations.

Geobionts – animals that permanently live in the soil, the entire development cycle of which takes place in the soil environment.

Geoxenes – animals that sometimes visit soil for temporary shelter or refuge.

Geological cycle – cycle of substances, the driving force of which is exogenous And endogenous geological processes.

Geophiles – animals, part of the development cycle of which (usually one of the phases) necessarily takes place in the soil.

Geophytes – a type of cryptophyte.

Heterothermic organisms – group homeothermic organisms whose retention periods are constant high temperature bodies are replaced by periods of its decrease when hibernating during an unfavorable period of the year (gophers, marmots, hedgehogs, bats, etc.).

Heterotrophs – organisms that use organic compounds as a source of carbon, that is, organisms that feed on ready-made organic matter (animals, fungi and most bacteria).

Hygrophiles – moisture-loving organisms.

Hygrophytes – plants of wet habitats that do not tolerate water deficiency. These include, in particular, aquatic plants - hydrophytes And hydatophytes.

Hydatophytes – aquatic plants, entirely or mostly submerged in water (for example, pondweed, water lily).

Hydrosphere – discontinuous water layer of the Earth, located between atmosphere And lithosphere and includes everything: oceans, seas, lakes, rivers, as well as groundwater, ice, snow of polar and high-mountain regions.

Hydrophytes – aquatic plants attached to the ground and submerged in water only with their lower parts (for example, reeds).

Guilds – groups of species in a community that have similar functions and niches of the same size, that is, whose roles in the community are the same or comparable (for example, tropical forest vines are represented by many plant species).

Hypobiosis ( forced peace) – inhibition of activity, or torpor, occurs under the direct pressure of unfavorable conditions (lack of heat, water, oxygen, etc.) and stops almost immediately after these conditions return to normal (certain species of arthropods, for example springtails, a number of flies , ground beetles, etc.). Cm. Anabiosis And Cryptobiosis.

Global modeling – forecasting the future of the whole world based on mathematical models and computer technology.

Homeostasis – dynamic balance of processes occurring in an organism, population, biocenosis, ecosystem.

Homeothermic organisms – organisms capable of maintaining internal body temperature at a relatively constant level regardless of environmental temperature (birds and mammals).

Horizontal zoning – a natural change in the natural environment in the direction from the equator to the poles.

State nature reserves – territories and water areas that are completely withdrawn from normal economic use in order to preserve them in their natural state natural complex.

State standard(GOST) – a regulatory and technical document that establishes a set of norms, rules, and requirements that must be followed.

Humus – main part of organic matter soil, completely lost the features of the anatomical structure.

Soil degradation – deterioration in quality soil as a result of the decline fertility.

Demecology(population ecology, population ecology) is a branch of ecology that studies the relationship of a population or species with the environment.

Dendrological parks and botanical gardens – collections of trees, shrubs and herbs created by man for the purpose of preserving biodiversity and enriching flora, as well as for scientific, educational and cultural-educational purposes.

Detritus – small particles of organism remains and their secretions.

Detrital food chains (decomposition chains)– food chains, starting with dead plant remains, carcasses and animal excrement. For example, detritus → detritivores → predators → microphages → predators → macrophages.

Detritivores – organisms that feed on detritus. See Saprotrophs.

Jute – mass mortality of livestock as a result of icy conditions, depriving animals of food.

Dominant species – species predominant in biocenosis by number.

Medium capacity – quantitative characteristics of the set of conditions limiting population growth.

Tight Control – direct, immediate impact on nature, grossly violating natural processes with the help of technical means, a radical transformation of the very mechanisms and systems of nature. For example, plowing land, building dams on rivers.

Living matter – living organisms that inhabit the Earth.

Life form of an organism – morphological type of adaptation of a plant or animal to certain living conditions and a certain way of life.

Pollution – bringing into environment or the emergence in it of new (usually not typical for it) harmful chemical, physical, biological, information agents. Pollution can occur due to natural causes (natural) or due to human activities (anthropogenic pollution).

polluter – any natural or man-made agent that enters or occurs in the environment in quantities beyond the natural background. A pollutant is also an object that serves as a source of environmental pollution. Also used English word"pollutant".

Pollutant – chemical substance that causes pollution.

Wildlife sanctuaries – territories created for a certain period of time (in some cases permanently) to preserve or restore natural complexes or their components and maintain ecological balance. In nature reserves, the population densities of one or more species of animals or plants, as well as natural landscapes, water bodies, etc. are preserved and restored.

Fungible natural resources- Natural resources, that can be replaced by others now or in the foreseeable future (all minerals, energy resources).

Tolerance zone – range of quantitative values environmental factor between the upper and lower endurance limits.

Zoobenthos – animal component of benthos (crustaceans, mollusks, starfish, etc.). Zooplankton – animal component of plankton (unicellular animals, crustaceans, jellyfish, etc.).

Zoophagi – heterotrophic organisms that use living animals as food. Cm. Biotrophs.

Zoocenosis – animal component biocenosis.

Infestation – the penetration of settling individuals into territories not yet occupied by the species, their settlement and the formation of new populations.

Exhaustible natural resources- Natural resources, the quantity of which is limited both absolutely and relatively (minerals, soils, biological resources). They are divided into non-renewable And renewable natural resources.

Natural resource inventories – This is a set of economic, environmental, organizational and technical indicators that characterize the quantity and quality of a natural resource, as well as the composition and categories of natural resource users of this resource.

Cannibalism – a special case of predation, when killing and eating one’s own kind occurs.

Carcinogens – factors that can cause malignant and benign neoplasms (ultraviolet, X-ray and gamma rays, benzopyrene, some viruses, etc.).

Environmental quality – a set of indicators characterizing the state environment, the degree to which a person’s living environment corresponds to his needs.

Tenancy – cm. Sinoikia.

Acid rain – rain or snow, acidified to pH< 5,6 из-за растворения в атмосферной влаге антропогенных выбросов (диоксид серы, оксиды азота, хлороводород и пр.).

Climax Community – a community in balance with its environment.

Climate – multi-year regime weather.

The colony – a group settlement of sedentary animals, both long-term existing and emerging only for the breeding season (loons, bees, ants, etc.).

Command and control – management of natural resources, based on the establishment of norms, standards, rules for environmental management and corresponding planned targets for enterprises for environmental protection and penalties from reprimand to imprisonment or removal from work and payment of fines to enterprises and its management.

Commensalism – relationships in which one of the partners benefits from cohabitation, and the other is indifferent to the presence of the first. Cm. Trophobiosis And Sinoikia.

Convergence – external similarity that arises among representatives of different unrelated groups and species as a result of a similar lifestyle.

Competition – relationships in which organisms compete with each other for the same environmental resources when the latter are scarce. Competition happens indirect (passive)– consumption of environmental resources needed by both species, and direct (active)– suppression of one type by another; intraspecific– competition between individuals of the same species, and interspecific- competition between individuals of different species.

Consortium – structural unit biocenosis, uniting autotrophic and heterotrophic organisms on the basis of spatial (topical) and nutritional (trophic) connections around the central member (nucleus). For example, a single tree or group of trees (edificator plant) and associated organisms.

Constructive Impact – human activity aimed at restoring the natural environment disturbed as a result of human economic activity or natural processes. For example, landscape reclamation, population restoration rare species animals and plants, etc.

Consumers(macroconsumers, phagotrophs) – heterotrophic organisms that consume organic matter producers or other consumers (animals, heterotrophic plants, some microorganisms). Consumers are of the first order (herbivorous animals), second order (primary predators that feed on herbivores), third order (secondary predators that feed on carnivores), etc.

Environmental monitoring – checking the compliance of indicators environmental quality(water, atmospheric air, soil, etc.) established standards and requirements (maximum concentration limit, VAT, maximum permissible limit, maximum permissible limit, etc.).

Coprophagous – organisms that feed on excrement, mainly mammals. Cm. Saprotrophs.

Indirect (mediated) impact – changes in nature as a result of chain reactions or secondary phenomena associated with human economic activity.

Cosmopolitans – species of plants and animals, representatives of which are found in most of the inhabited areas of the Earth (for example, housefly, gray rat).

Inert substance – non-living bodies formed as a result of processes not related to the activity of living organisms (rocks of igneous and metamorphic origin, some sedimentary rocks).

Coevolution of society and nature – joint, interconnected evolution of society and nature.

Edge effect – increase in species diversity in transition zones between communities (ecotones).

"Red Tides" – massive development of pyrophytic algae associated with excessive discharge of organic substances into the ocean. They were recorded off the coast of Florida, India, Australia, Japan, the Black Sea, etc.

Survival curves – curves reflecting how, as people age, the number of individuals of the same age decreases in populations.

Cryophiles – organisms living in low temperature conditions.

Cryptobiosis ( physiological rest) – a state of decreased vital activity as a result of partial inhibition of metabolism, is associated with a complex of physiological changes in the body that occur in advance, before the onset of unfavorable seasonal changes (plant seeds, cysts and spores of various microorganisms, fungi, algae, hibernation of mammals, deep plant dormancy). Cm. Anabiosis And Hypobiosis.

Cryptophytes – plants whose renewal buds are hidden in the soil (geophytes) or underwater (hydrophytes)(bulbous, tuberous and rhizomatous plants).

Cycle of substances – repeated participation of substances in processes occurring in atmosphere, hydrosphere And lithosphere, including in those layers that are part of the Earth's biosphere.

Xenobiotics – pollutants environment from any class of chemical compounds that do not occur naturally ecosystems.

Xerophiles – dry-loving organisms.

Xerophytes – plants of dry habitats that can tolerate overheating and dehydration. These include succulents And sclerophytes.

K-strategists (K-species, K-populations) – populations of slowly reproducing but more competitive individuals (humans, trees, etc.)

Limitation of natural resource use – the fee for above-limit use of natural resources and environmental pollution is several times higher than the fee for use and pollution within the limits established by the enterprise.

Limiting factor– environmental factor, the quantitative value of which is beyond endurance limits kind.

Limnic zone – water column to a depth where only 1% of sunlight penetrates and is attenuated photosynthesis.

Littoral zone – the thickness of water where sunlight reaches the bottom.

Lithosphere – the outer solid shell of the Earth, including the crust and the upper solid layer of the mantle.

Lithophytes (petrophytes) – plants that settle on stones, rocks or in their cracks.

Maximum life expectancy (MLS) – This life expectancy, to which only a small proportion of individuals can survive under real environmental conditions.

Low waste technology – a production method that ensures the most efficient use of raw materials and energy, with a minimum of waste and energy loss.

Material incentives for environmental activities – ensuring the benefits of environmental protection activities for nature users.

Mesotrophs – plants that require moderate amounts of ash elements.

Mesophiles – organisms that live in both wet and dry habitats.

Mesophytes – plants of moderately humid habitats;

an intermediate group between hydrophytes and xerophytes.

Habitat – is the territory or water area occupied by population (species), with a complex of inherent environmental factors.

Microbocenosis – microbial component biocenosis.

Mixotrophs – organisms that can both synthesize organic substances from inorganic ones and feed on ready-made organic compounds (insectivorous plants, representatives of the euglena algae division, some bacteria, etc.). Cm. Autotrophs And Heterotrophs.

Mineralization – conversion of organic residues into inorganic substances.

Mosaic – horizontal structure biocenosis.

Environmental monitoring (ecological monitoring) – a system for monitoring, assessing and forecasting the state of the natural environment around humans. Monitoring happens background (basic)– monitoring of natural phenomena and processes occurring in a natural environment, without anthropogenic influence (carried out on the basis of biosphere reserves); impact– monitoring anthropogenic impacts in particularly hazardous areas, global– monitoring the development of global biosphere processes and phenomena (for example, the state of the ozone layer, climate change), regional– monitoring natural and anthropogenic processes and phenomena within a certain region (for example, the state of Lake Baikal), local– monitoring within a small area (for example, monitoring the air condition in the city).

Mutagens – factors that can cause mutations (ultraviolet, x-rays and gamma rays, high or low temperature, benzopyrene, nitrous acid, some viruses, etc.).

Mutualism(obligate symbiosis) - mutually beneficial cohabitation, when either one of the partners or both cannot exist without a cohabitant. For example, herbivorous ungulates and cellulose-degrading bacteria.

Soft control – mainly indirect, indirect impact on nature using natural mechanisms of self-regulation, that is, the ability of natural systems to restore their properties after anthropogenic intervention. For example, agroforestry.

Freeloading – cm. Trophobiosis.

National parks – relatively large natural territories and water areas, where the fulfillment of three main goals is ensured: environmental (maintaining ecological balance and preserving natural ecosystems), recreational (regulated tourism and recreation of people) and scientific (development and implementation of methods for preserving the natural complex in conditions of mass admission of visitors). There are economic use zones in national parks.

Non-renewable natural resources– exhaustible natural resources, which are absolutely not restored (coal, oil and most other minerals) or are restored much more slowly than their use (peat bogs, many sedimentary rocks).

Irreplaceable natural resources- Natural resources, which cannot be replaced by other natural resources ( atmospheric air, water, genetic fund of living organisms).

Inexhaustible natural resources- Natural resources, the number of which is not limited, but not absolutely, but relative to our needs and periods of existence (waters of the World Ocean, fresh water, atmospheric air, wind energy, solar radiation, energy of sea tides).

Neuston – organisms that live near the surface of water.

Neutralism – cohabitation of two species in the same territory, which has neither positive nor negative consequences for them. For example, squirrels and moose.

Neutrophils – plants living on soils with pH = 6.7–7.0.

Necrophages – heterotrophic organisms that use animal corpses as food.

Necrophages(carrion eaters) - organisms that feed on animal corpses. Cm. Saprotrophs.

Nekton – animals that actively move in water (fish, amphibians, cephalopods, turtles, cetaceans, etc.).

Unintended Impact is unconscious when a person does not anticipate the consequences of his activities.

Irrational environmental management – human economic activity leading to depletion (and even extinction) natural resources, environmental pollution, disruption of the ecological balance of natural systems, that is, to environmental crisis or disaster.

Nitrophils – plants that prefer nitrogen-rich soils.

Noosphere – sphere of reason, highest stage of development biosphere, when intelligent human activity becomes the main determining factor in its development.

Standardization of environmental quality – establishing a system of quantitative and qualitative indicators (standards) of the state environment(for air, water, soil, etc.), which provide favorable conditions for human life and the sustainable functioning of natural, ecosystems

Species abundance – the number or mass of individuals of a given species per unit area or volume of space occupied by it.

"The ozone hole" – significant space in ozonosphere planets with noticeably reduced (up to 50% or more) ozone content.

Ozonosphere – layer atmosphere with the highest ozone concentration at an altitude of 20–25 (22–24) km.

Natural environment – the natural habitat and activity of humans and other living organisms, including the lithosphere, hydrosphere, atmosphere, biosphere and near-Earth space. Within the natural environment there are natural resources And natural conditions.

Oligotrophs – plants that are content with a small amount of ash elements.

Optimum (optimum zone, zone of normal life) – such quantity environmental factor, at which the intensity of vital activity of organisms is maximum.

Osmotrophs – heterotrophic organisms that absorb organic substances from solutions through cell membranes (fungi, most bacteria).

Specially protected natural areas(SPNA) – territories or water areas within which their economic use is prohibited and their natural state is maintained in order to maintain ecological balance, as well as for scientific, educational, cultural and aesthetic purposes.

Nature protection (natural environment) – a system of international, state and public activities aimed at the rational use, reproduction and protection of natural resources and improvement of the state of the natural environment in the interests of meeting the material and cultural needs of both existing and future generations of people. In other words, a system of measures to optimize the relationship between human society and nature.

Environmental Impact Assessment (EIA) – type of activity to identify, analyze and take into account direct, indirect and other consequences of impact on environment planned economic and other activities in order to make a decision on the possibility or impossibility of its implementation.

Risk assessment – scientific analysis of the occurrence of risk (the possibility of a dangerous situation) in order to identify the danger, determine the degree of danger in specific conditions. Characterizes the probability of a negative event (accident, release, epidemic, etc.).

Monuments nature – unique, non-reproducible natural objects that have scientific, environmental, cultural and aesthetic value (caves, ancient trees, rocks, waterfalls, etc.). On the territory where they are located, any activity that violates their safety is prohibited.

Panmixia – free crossing between individuals of the same species.

Greenhouse (greenhouse, hothouse) effect – heating the lower layers atmosphere, due to the ability of the atmosphere to transmit short-wave solar radiation, but retain long-wave thermal radiation from the earth's surface. The greenhouse effect is facilitated by the entry of anthropogenic impurities into the atmosphere (carbon dioxide, dust, methane, freons, etc.).

Parcel – structural part in horizontal division biocenosis, differing from other parts in the composition and properties of the components. For example, areas broadleaf trees in a coniferous forest.

Grazing food chains (grazing chains)– food chains, starting with living photosynthetic organisms. For example, phytoplankton → zooplankton → fish microphages → macrophage fish → ichthyophagous birds.

Patients – species that can survive in unfavorable conditions (“shade-loving”, “salt-loving”, etc.).

Pedosphere(soil cover) – the shell of the Earth formed by the soil cover; upper (daytime) part of the lithosphere on the land.

Pelagial – water column in the ocean or sea as a habitat for pelagic organisms – plankton And nekton.

Primary production– biomass, created per unit of time producers. It is divided into gross And clean products.

Rifles – shallow sections of rivers with fast currents (the bottom is without silt, predominantly attached forms are found periphyton And benthos).

Periphyton – organisms attached to the leaves and stems of aquatic plants or other protrusions above the bottom of a reservoir.

Pessimum (pessimum zone, depression zone) – such quantity environmental factor, in which the vital activity of organisms is inhibited.

Biomass pyramid – graphical representation of the relationship between producers And consumers of different orders, expressed in units of biomass. Shows the change in biomass at each next trophic level: For terrestrial ecosystems, the biomass pyramid narrows upward; for the ocean ecosystem, it is inverted.

Pyramid of numbers (Elton numbers)– graphical representation of the relationship between producers And consumers different orders, expressed in units of the number of individuals. Reflects a decrease in the number of organisms from producers to consumers.

Pyramid of energy (products) – graphical representation of the relationship between producers And consumers of different orders, expressed in units of energy contained in the mass of living matter. It is universal in nature and reflects a decrease in the amount of energy contained in products created at each subsequent trophic level.

food web – complex interweaving in the community food chains.

Food chain (trophic chain, food chain) – a sequence of organisms that transfers the energy contained in food from its original source.

Plankton – organisms that mainly move passively due to the current (unicellular algae, unicellular animals, crustaceans, jellyfish, etc.). Highlight phytoplankton And zooplankton.

Payment for environmental management – payment for the use of almost all natural resources, for environmental pollution, the placement of production waste in it and for other types of impact.

Plyos – deep-water sections of rivers with a slow flow (at the bottom there is a soft silty substrate and burrowing animals).

Soil fertility – ability soils satisfy the needs of plants for nutrients and water, provide them root systems sufficient heat and air for normal activity and crop production.

Density – number of individuals or biomass populations, per unit area or volume.

Human behavior – a complex set of motor acts aimed at satisfying the needs of the body.

Weather – the continuously changing state of the atmosphere at the earth's surface, up to approximately a height of 20 km (the boundary of the troposphere).

Poikilothermic organisms – organisms with unstable internal body temperature, varying depending on the temperature of the external environment (microorganisms, plants, invertebrates and lower vertebrates).

Sexual structure (sexual composition) of the population – ratio in populations male and female individuals.

Population – a collection of individuals of the same species capable of self-reproduction, which exists for a long time in a certain part range relatively isolated from other aggregates of the same kind.

Threshold (minimum effective) concentration – the minimum concentration of a chemical substance that causes minor but significant changes in the body or in environment.

Potential natural resources –Natural resources, which are currently not used by humans at all or are used to an insufficient extent (energy from the Sun, sea tides, wind, etc.).

Human needs – a source of activity, a state expressing a person’s dependence on the conditions of existence.

The soil – This is the surface horizon of the earth's crust, forming a layer of small thickness, formed as a result of the interaction of soil-forming factors: climate, organisms, parent rocks, terrain, age of the country (time), human economic activity.

Upper endurance limit – maximum amount environmental factor,

Lower endurance limit – minimal amount environmental factor, in which the life of organisms is still possible.

Maximum permissible anthropogenic (ecological) load on the environment (maximum permissible harmful impact - MPE) - the maximum intensity of anthropogenic impact on the environment that does not lead to a violation of the sustainability of ecological systems (or, in other words, to the ecosystems beyond the ecological capacity).

Maximum permissible concentration (quantity) (MPC) – the amount of a pollutant in the environment (soil, air, water, food), which, with permanent or temporary exposure to a person, does not affect his health and does not cause adverse effects in his offspring. MPCs are calculated per unit volume (for air, water), mass (for soil, food products) or surface (for workers’ skin).

Maximum permissible harmful exposure (MPE)– see Maximum permissible anthropogenic (ecological) load on the environment.

Maximum permissible emission (MPE) or discharge (MPD) – the maximum amount of pollutants that a given specific enterprise is allowed to emit into the atmosphere or discharge into a body of water per unit of time, without causing them to exceed the maximum permissible concentrations of pollutants and adverse environmental consequences.

Maximum permissible level (MAL) – this is the maximum level of exposure to radiation, noise, vibration, magnetic fields and other harmful physical influences, which does not pose a danger to human health, the condition of animals, plants, or their genetic fund. MPL is the same as MPC, but for physical impacts.

Intentional impact is conscious when a person expects certain results from his activities.

Natural resource potential – Part natural resources, which can be involved in economic activity given the technical and socio-economic capabilities of society with the condition of preserving the living environment of mankind. In a narrower economic sense, it is the totality of natural resources available with given technologies and socio-economic relations.

Natural parks – territories of particular ecological and aesthetic value, with a relatively mild security regime and used primarily for organized recreation of the population. Their structure is simpler than national natural parks.

Natural resources – elements of nature (objects and phenomena), necessary for a person for his life support and those involved in material production(atmospheric air, water, soil, solar radiation, minerals, climate, vegetation, wildlife, etc.). They are divided unreal And potential, replaceable And irreplaceable, exhaustible And inexhaustible natural resources.

Natural conditions – elements of nature (objects and phenomena) that influence human life and activity, but are not involved in material production (some gases of the atmosphere, species of animals and plants, etc.). As science and technology develop, natural conditions become natural resources.

Nature management – use of natural resources to meet the material and cultural needs of society. Environmental management (as a science) is a field of knowledge that develops the principles of rational (reasonable) environmental management. Nature management can be rational and irrational.

Lifespan – the duration of an individual's existence. Distinguish physiological, maximum And average life expectancy.

Producers – autotrophic organisms capable of producing organic substances from inorganic ones using photosynthesis or chemosynthesis(plants and autotrophic bacteria).

Spatial structure of the biocenosis – distribution of organisms of different species in space (vertically and horizontally).

Spatial and ethological structure of the population – nature of distribution of individuals populations within range.

Protocooperation(facultative symbiosis) is a mutually beneficial, but not obligatory coexistence of organisms, from which all participants benefit. For example, hermit crabs and sea anemones.

Profundal zone – the bottom and thickness of water where sunlight does not penetrate.

Direct (immediate) impact – change in nature as a result of the direct impact of human economic activity on natural objects and phenomena.

Psammophytes – sand plants.

Destructive (destructive) impact – human activity leading to the loss of the natural environment of its beneficial qualities to humans. For example, clearing rain forests for pastures or plantations, as a result of which the biogeochemical cycle of substances is disrupted, and the soil loses its fertility in 2-3 years.

Rational environmental management – human economic activity that ensures economical use natural resources And natural conditions, their protection and reproduction, taking into account not only the present, but also the future interests of society.

Real natural resources- Natural resources, which are currently used by humans in production activities.

Decomposers(microconsumers, destructors, saprotrophs, osmotrophs) - heterotrophic organisms that feed on organic residues and decompose them into minerals (saprotrophic bacteria and fungi).

Recycling – reuse of material resources, saving raw materials and energy, and reducing waste generation.

Fertility (birth rate) – number of new individuals appearing in populations per unit of time as a result of reproduction. .

r-strategists (r-species, r-populations) – populations of rapidly reproducing but less competitive individuals (bacteria, aphids, annual plants, etc.).

Saprotrophs – heterotrophic organisms that use organic matter from dead bodies or excretions (excrement) of animals as food. These include saprotrophic bacteria, fungi, plants (saprophytes), animals (saprophages). Among them there are detritivores(feed on detritus) necrophages(feed on animal corpses) coprophagous(feed on excrement), etc.

Saprophages – saprotrophic animals. Cm. Saprotrophs.

Saprophytes – saprotrophic plants. Cm. Saprotrophs.

Sinoikia (lodging) – a form of commensalism in which one species uses the body or habitation of another species as a shelter or home. For example, sea anemones and tropical fish.

Sinusia – structural part in vertical division biocenosis, limited in space (or time). For example, in a pine forest one can distinguish pine synusia, lingonberry synusia, green moss synusia, etc.

Synecology(ecology of communities, population ecology) – a branch of ecology that studies communities of organisms (biocenoses, ecosystems).

System of standards in the field of nature conservation (SSOP) – complex of interconnected standards, aimed at the conservation, restoration and rational use of natural resources.

Sclerophytes – xerophytic plants with rigid shoots, due to which, in case of water deficiency, they do not exhibit an external pattern of wilting (for example, feather grass, saxaul). Cm. Xerophytes.

Population growth rate – change population size per unit of time. It depends on the indicators fertility, mortality and migration (movement - immigration and eviction - emigration).

Mortality rate (death rate) – number of individuals killed in populations per unit of time (from predators, diseases, old age and other reasons).

Smog– a toxic mixture of smoke, fog and dust. There are two types of smog: London and Los Angeles.

Habitat – it is a part of nature that surrounds living organisms and has a certain effect on them.

Average life expectancy (ALS) – this is the arithmetic mean life expectancy all individuals of the population.

Stabilizing effect – human activity aimed at slowing down the destruction (destruction) of the natural environment as a result of both human economic activity and natural processes. For example, soil protection measures aimed at reducing soil erosion.

Herd - longer than a flock, or a permanent association of animals, in which, as a rule, all the vital functions of the species are performed: protection from enemies, obtaining food, migration, reproduction, raising young animals, etc. (deer, zebras, etc.).

Standards (standards, regulations) – concentrations (contents) permitted by law pollutants in objects environment or magnitude of impact.

Station – habitat of any species (population) land animals.

Pack – a temporary association of animals that facilitates the performance of any function: protection from enemies, obtaining food, migration (wolves, herring, etc.).

Stenobionts – ecologically low-tolerant species with a narrow zone of tolerance (ecological valency).

Degree of dominance – the ratio of the number of individuals of a given species to the total number of all individuals of the group under consideration.

Population structure – ratio in populations groups of individuals by sex, age, size, genotype, distribution of individuals over the territory, etc. (gender, age, size, genetic, spatial-ethological, etc.).

Succulents – xerophytic plants with succulent, fleshy leaves (for example, aloe) or stems (for example, cacti), in which water-storing tissue is developed. Cm. Xerophytes.

Successional series – a successive series of communities replacing each other in succession.

Succession – sequential shift biocenoses (ecosystems), expressed in changes in species composition and community structure. There are successions natural– occurring under the influence of natural causes not related to human activity, and anthropogenic– caused by human activity; autogenous(self-generating) - arising due to internal causes (changes in the environment under the influence of the community) and allogeneic(generated from the outside) – caused by external reasons (for example, climate change); primary– developing on a substrate not occupied by living organisms (on rocks, cliffs, loose sand, in new bodies of water, etc.), and secondary– developing in place of already existing biocenoses after their disturbance (as a result of cutting down, fire, plowing, volcanic eruption, etc.).

Sciophytes(shade-loving plants) – plants that do not tolerate direct sunlight.

Teratogens – factors that can cause deformities (ultraviolet, x-rays and gamma rays, benzopyrene, some viruses, etc.).

Thermophiles – organisms living in high temperature conditions.

Therophytes – annual plants that do not have renewal buds; They reproduce only by seeds.

Technogenesis – a set of geochemical processes caused by human production and economic activities.

Technosphere – part of the biosphere (over time, apparently, the whole biosphere), transformed by human technical activity. The concept of “technosphere” is used when they want to emphasize the material side of the human-nature relationship, as well as the fact that at the present stage the economic activity of people is not so reasonable as to talk about noosphere.

Toxicants – chemical substances, having the property toxicity.

Toxicity – toxicity, that is, the ability to have a harmful or even fatal effect on a living organism.

Topical connections – connections between species when one species changes the living conditions of another species. For example, under a coniferous forest, as a rule, there is no grass cover.

"Third Nature" - an artificial world created by man and which has no material and energy analogy in natural nature (cities, indoor space, asphalt, concrete, synthetics, etc.).

Trophic connections – connections between species, when one species feeds on another: living individuals, dead remains, waste products.

Trophic level – link place in the food chain.

Trophobiosis (freeloading) – a form of commensalism in which one species consumes the food scraps of another species. For example, the relationship between large predators and scavengers.

Ubiquists– species of plants and animals with a wide ecological valency, capable of existing in a variety of environmental conditions, have extensive habitats (for example, common reed, wolf).

Managing natural systems – activities, the implementation of which allows you to change natural phenomena and processes (strengthen or limit them) in the direction desired by a person. Managing natural systems can be soft And hard.

Natural resources management(environmental protection management and rationalization of the use of natural resources) - ensuring standards and requirements limiting the harmful effects of production processes and products on the environment, and the rational use of natural resources, their restoration and reproduction. Environmental management can be command and administrative And economic.

Urbanization – This is a historical process of increasing the role of cities in the life of society, associated with the concentration and intensification of non-agricultural functions, the spread of an urban lifestyle, and the formation of specific socio-spatial forms of settlement.

Urban systems (urban systems) – artificial systems (ecosystems), arising as a result of urban development and representing a concentration of population, residential buildings, industrial, household, cultural facilities, etc.

Living conditions – a complex of environmental factors under the influence of which all the basic life processes of organisms are carried out, including normal development and reproduction.

Factory connections – connections between species, when one species uses excretory products, dead remains, or even living individuals of another species for its structures. For example, when building nests, birds use tree branches, grass, down and feathers of other birds.

Phagotrophs(holozoans) – heterotrophic organisms that swallow solid pieces of food (animals).

Health factors– a set of factors that are not the direct cause of a particular disease (risk factors) and factors that are the direct cause of the disease.

Risk factors - factors that are not the direct cause of a particular disease, but increase the likelihood of its occurrence.

Phanerophytes – plants whose renewal buds are located high above the ground (above 30 cm) (trees and shrubs).

PAR – photosynthetic activity of solar radiation.

Fauna – a set of animal species living in a certain territory.

Physiological life expectancy (PLS) – This life expectancy, which an individual of a given species could have had if it had not been influenced by limiting factors throughout its life.

Physiological rhythms –endogenous biological rhythms, supporting the continuous functioning of organisms (heartbeat, breathing, functioning of the endocrine glands, etc.).

Financing of environmental activities – provision Money for environmental activities.

Phytobenthos – plant component of benthos (attached algae and higher plants).

Phytoplankton – herbal component plankton(unicellular algae).

Phytophagous – heterotrophic organisms that use living plants as food. Cm. Biotrophs.

Phytocenosis – herbal component biocenosis.

Flora – a set of plant species living in a certain area.

Phoric connections – connections between species when one species participates in the distribution of another species. For example, the transfer of seeds, spores, and pollen by animals.

Photoperiodism – the reaction of organisms to the length of daylight hours. For example, leaf fall, bird flights.

Photosynthesis(photoautotrophy) - the synthesis of organic compounds from inorganic ones due to light energy.

Phototrophs – autotrophic organisms that use light energy for biosynthesis (plants, cyanobacteria). Cm. Autotrophs.

Freons (chlorofluorocarbons or FHU) – highly volatile, chemically inert substances near the earth's surface, widely used in production and everyday life as refrigerants (refrigerators, air conditioners, refrigerators), foaming agents and sprayers (aerosol packaging). Freons, rising into the upper layers of the atmosphere, undergo photochemical decomposition with the formation of chlorine oxide, which intensively destroys ozone.

Chamephytes – plants whose renewal buds are located near the soil surface or low (no higher than 20-30 cm) may end up under snow in winter (semi-shrubs and small shrubs).

Chemosynthesis(chemoautotrophy) is the process of synthesis of organic compounds from inorganic ones (CO 2, etc.) due to the chemical energy of the oxidation of inorganic substances (sulfur, hydrogen, hydrogen sulfide, iron, ammonia, nitrite, etc.).

Chemotrophs – autotrophic organisms that use energy for biosynthesis chemical reactions no oxidation organic compounds(chemotrophic bacteria: hydrogen, nitrifying, iron bacteria, sulfur bacteria, etc.).See. Autotrophs.

Predation – a relationship in which one of the participants (the predator) kills the other (the prey) and uses him as food. For example, wolves and hares.

Flowering waters – massive development of phytoplankton, causing a change in water color from green and yellow-brown to red. It is caused by a significant intake of nutrients (phosphorus, nitrogen, potassium, etc.) into water bodies.

Circadian (circadian) rhythms – repeating changes in the intensity and nature of biological processes and phenomena with a period of 20 to 28 hours.

Circanian (periannual) rhythms – repeated changes in the intensity and nature of biological processes and phenomena with a period of 10 to 13 months.

Frequency of occurrence – the percentage of the number of samples or survey sites where the species occurs to the total number of samples or survey sites.

Number – number of individuals in populations.

Net primary production– biomass, which is not spent on maintaining the life of plants and is subsequently used consumers And decomposers, or accumulates in the ecosystem.

Environmental emergency – cm. Ecological crisis.

Eurybionts – ecologically hardy species with a wide zone of tolerance (ecological valency).

Eutrophication(eutrophication) – an increase in the biological productivity of water bodies as a result of the accumulation of nutrients (phosphorus, nitrogen, potassium, etc.) under the influence of natural and anthropogenic factors. A negative consequence of eutrophication is the deterioration of the physical and chemical conditions of the habitat of fish and other aquatic organisms due to the massive development of phytoplankton, the decomposition of dead organisms and the toxicity of their decay products. Cm. Blooming waters, Red tides.

Eutrophic – plants that need large quantities ash elements.

Euphotic zone – the entire illuminated water column. It includes littoral And limnic zone.

Edifiers(builders) – species that determine the microenvironment (microclimate) of the total biocenosis(usually these are plants).

Exogenous (external) rhythms– biological rhythms, arising as a reaction to periodic changes in the environment (change of day and night, seasons, solar activity).

Exogenous processes (processes of external dynamics) – geological processes occurring under the influence of external energy of the Sun. Exogenous processes include the geological activity of the atmosphere, hydrosphere (rivers, temporary streams, groundwater, seas and oceans, lakes and swamps, ice), as well as living organisms and humans.

Environmental Safety – a set of actions, states and processes that do not directly or indirectly lead to vital damage (or threats of such damage) caused to the natural environment, individuals and humanity.

Ecological valence (plasticity, tolerance, stability) – the degree of adaptability of the species to changes in environmental conditions; its ability to tolerate quantitative fluctuations in the action of an environmental factor to one degree or another.

Ecological disaster (ecological disaster) – environmental distress, characterized by profound irreversible changes in the environment and a significant deterioration in public health.

Ecological niche – the totality of all environmental factors within which the existence of a species in nature is possible.

Ecological pyramid – graphical representation of the relationship between producers And consumers different orders, expressed in units of biomass (biomass pyramid), number of individuals (pyramid of numbers) or energy contained in the mass of living matter (energy pyramid).

Ecological survival strategy – set of properties populations, aimed at increasing the likelihood of survival and leaving offspring. Cm. r-strategists And K-strategists.

Ecological structure of biocenosis – ratio in biocenosis organisms of different ecological groups.

Environmental assessment – assessment of the level of possible negative impacts of planned economic and other activities on the environment, natural resources and human health.

Ecological rhythms– endogenous biological rhythms, that arose as an adaptation of living organisms to periodic changes in the environment (daily, annual, tidal, lunar, etc.).

Environmental factors – These are individual elements of the environment that affect organisms.

Environmental equivalents – species that occupy similar niches in different geographic areas (for example, large Australian kangaroos, bison North America, zebras and antelopes of Africa, etc.).

Environmental audit – independent, comprehensive, documented assessment of compliance by a business entity and other activities with requirements, including standards and regulatory documents, in the field environmental protection, international requirements standards and preparing recommendations for improving such activities.

Environmental control – activities of government bodies, enterprises and citizens to comply with environmental standards and regulations. There are state, industrial and public environmental control. Cm. Environmental monitoring.

Ecological crisis (ecological emergency) – environmental distress, characterized by persistent negative changes in the environment and posing a threat to human health.

Environmental passport of the enterprise – a regulatory and technical document that includes data on the enterprise’s use of resources (natural, secondary, etc.) and determining the impact of its production on environment. Includes a set of data and indicators in accordance with GOST 17.0.0.04–90.

Environmental risk – the likelihood of an event occurring that has adverse consequences for the natural environment and is caused by the negative impact of economic and other activities, natural and man-made emergencies.

Environmental disaster – cm. Ecological catastrophy.

Ecological well-being of the ecosystem – state ecosystems, which is characterized by normal reproduction of its main links.

Environmental law – a set of environmental and legal norms (rules of behavior) regulating public (ecological) relations in the sphere of interaction between society and nature with the aim of protecting the environment, preventing harmful environmental consequences, improving the health and improving the quality of the natural environment around humans.

Ecology – the science of the relationships of living organisms with each other and with their environment. The term “ecology” was first introduced by the German biologist E. Haeckel (1866). By ecology he understood “the sum of knowledge related to the economy of nature.”

Human ecology – chapter ecology, studying the patterns of interaction between humans and the human community with surrounding natural, social, environmental, hygienic and other factors.

Environmental economics – a branch of economics that studies mainly issues of economic (in some cases, non-economic) assessment of natural resources and damage from environmental pollution.

Economic management – management of natural resources, based on economic incentives, when, with the help of various levers (prices, payments, tax breaks and penalties), the state makes it more financially advantageous for enterprises, that is, more profitable, to comply with environmental legislation than to violate it.

Ecosystem(ecological system) - a system of living organisms living together and the conditions of their existence, connected by the flow of energy and the circulation of substances.

Ecotones – transition zones between communities.

Ecocentrism – a type of social consciousness based on an understanding of the need for co-evolution of man and the biosphere.

Explerents(filling) - species that can quickly appear where indigenous communities are disturbed - in clearings and burnt areas (aspens), on shallows, etc.

Emergence – the presence of special, qualitatively new properties in a system that are not inherent in the sum of the properties of its individual elements. For example, you cannot predict the properties of water based on the properties of oxygen and hydrogen.

Endemics – species of plants and animals that have small, limited habitats (often found on islands of oceanic origin, in mountainous areas and isolated bodies of water).

Endogenous (internal) rhythms– biological rhythms, generated by the body itself (rhythmicity of DNA, RNA and protein synthesis, cell division, heartbeat, breathing, etc.).

Endogenous processes (processes of internal dynamics) – geological processes occurring under the influence of the internal energy of the Earth: the energy of radioactive decay, chemical reactions of the formation of minerals, crystallization of rocks, etc. Endogenous processes include: tectonic movements, earthquakes, magmatism, metamorphism.

Epiphytes – plants living on other plants (on branches, tree trunks), without connection with the soil.

Ethology – the science of the behavior of organisms.

Estivation(from lat. " aestes" - summer) – summer hibernation of small mammals (mouse-like rodents, some ground squirrels, insectivorous little foxes, etc.) in deserts.

Ephemeroids – perennial herbaceous plants, which, like ephemera, characterized by a very short growing season.

Ephemera – annual herbaceous plants that complete a full development cycle in a very short and usually wet period.

Group effect – optimization of physiological processes leading to increased viability of individuals when living together.

Tiering – vertical structure biocenosis.

The science of relationships between living organisms and environmental conditions. Basic methods of science: observation, experiment, modeling, counting the number of individuals, etc. The term “ecology” was introduced by the German zoologist E. Haeckel (1866)

HABITAT- this is what surrounds the body. Main habitats: aquatic, ground-aquatic, ground-air, soil.

ENVIRONMENTAL FACTORS- this is everything that has a direct or indirect effect on organisms.

ABIOTIC FACTORS- factors of inanimate nature - light, temperature, pressure, climate, water and air currents, composition of water, soil, air, etc.

BIOTIC FACTORS- factors of living nature, i.e. influence of plants, animals, bacteria, fungi, viruses.

ANTHROPOGENIC FACTORS- this is human influence (hunting, fishing, protection, extermination, pollution, plowing, logging, etc.).

BIOCENOSIS (COMMUNITY)- these are all species that live together in a certain territory and are interconnected (for example, the biocenosis of a lake, taiga forest, etc.).

BIOGEOCENOSIS (ECOSYSTEM) is a complex self-regulating system in which there is a relationship between living organisms and their living conditions ( biogeocenosis = biocenosis + environmental conditions).

BIOTIC CONNECTIONS- This Various types relationships between living organisms.

PREDATION (-+)- a type of relationship when one organism eats another. There are predator-hunters (wolf, tiger, lion, etc.) and predator-gatherers (insectivores, herbivores). There are carnivorous plants (sundew, Venus flytrap, bladderwort, etc.)

COMPETITION (--) relations of rivalry, competition. Competition is most intense within a species and between related species, since they have common needs for food and living conditions. Examples: fox-wolf, owl - eagle owl, pine - birch, pike - perch, carp - crucian carp, etc.

NEUTRALISM (OO)- relationships when there are no direct connections between species (wolves and grasshoppers, moose and squirrels, bees and hares)

COMMENSALISM (O+)- a relationship where one species benefits from another without harming it. There are several varieties: lodgement (insects use burrows, nests of other animals as a home), freeloading (feeding of jackals, hyenas, vultures on the leftover food of predatory animals), communion (feeding on different parts of the same resource, for example, pine pine and bark beetles, soil inhabitants consuming various plant residues)

AMENSALISM (O-)- relationships when one species is oppressed, and another species is indifferent (for example, herbs growing under a spruce)

SYMBIOSIS (++)- mutually beneficial relationships between species. When joint life is obligatory for both species, this is mutualism (symbiosis of birch roots and boletus mycelium, mushrooms and algae in the body of a lichen); if it is optional, then it is protocooperation (for example, meadow plants and their pollinators).

BIOLOGICAL OPTIMUM- this is the presence of all favorable conditions for the life of the organism.

PHOTOPERIODISM- this is the adaptability of organisms to changes in the length of daylight hours, i.e. to seasonal changes (spring and autumn molting, hibernation, seasonal flights and migrations, leaf fall, breeding season, nesting, mating games).

ANABIOSIS- this is the ability of organisms to tolerate unfavorable conditions in a state in which metabolism decreases and all visible manifestations of life are absent (for example, the state of cysts in protozoa, spores in bacteria, winter and summer hibernation of animals)

ACCLIMATIZATION- physiological adaptation to endure heat or cold.

WINTERING- hibernation in winter.

DIAPAUSE- stop in development during unfavorable periods of the year.

ECOLOGICAL SURVIVAL STRATEGY- the desire of organisms to survive.

FOOD CHAINS (TROPHIC CHAINS)- these are sequential connections of organisms, when the organisms of the previous link are food for the next one.

PASTURE CHAINS (grazing chains)- food chains in which the first link is green plants (grass---caterpillar---tit----falcon)

DETRITAL CHAINS (decomposition chains)- food chains that begin with dead organic matter (leaf litter -> earthworm -> tit -> falcon)

TROPHIC LEVEL- all species that consume similar food (for example, all herbivores form one trophic level; carnivores form another level)

BENTHOS- all inhabitants of the bottom part of the reservoir (crabs, bivalves, sea anemones, octopuses, coral polyps, etc.)

PLANKTON- microscopic algae and animals living in the water column. Consists of phyto- and zooplankton.

NEKTON- large inhabitants of the water column (fish, squid, dolphins, whales, etc.)

PERIPHYTON- organisms attached to aquatic plants or underwater rocks (crustaceans, bivalves, sea acorns, ascidians)

PLAYSTONE- a collection of aquatic organisms floating on the surface of the water or in a semi-submerged state.

RULE OF THE ECOLOGICAL PYRAMID- when moving from one level of nutrition to another, the biomass, number of individuals and amount of energy decreases several times (about 10 times). The reason for this pattern is that organisms spend 90% of food energy on vital processes (energy of “breathing”) , and only 10% goes to body growth and only this part goes to the next link in the food chain.

TOLERANCE- the ability of organisms to withstand changes in environmental conditions. Organisms with high tolerance can withstand changes in conditions over a wide range, and they are therefore more likely to survive, while those with low tolerance can only live in certain conditions.

BIONT- inhabitant of the environment (aquatic organism - inhabitant aquatic environment, geobiont (edaphobiont, pedofauna) - soil environment, stenobiont - an organism that requires strictly defined conditions, i.e. with low tolerance; eurybiont - an organism capable of living in different conditions, etc.)

LIFE FORM OF AN ORGANISM- type of adaptation of organisms to environmental conditions. For example, life forms in plants: trees, herbs, shrubs, vines, succulents, etc.; in animals by method of movement - flying, jumping, crawling, burrowing, running, swimming, attached, by habitat - waterfowl, forest, steppe, soil, etc.

TIERS- plant adaptability, allowing more complete use of environmental resources: light, heat, moisture, soil nutrients. Layering can be horizontal or vertical (in the soil).

FUNCTIONAL GROUPS OF THE ECOSYSTEM- these are three groups of organisms in any ecosystem that carry out the main processes in the ecosystem: producers, consumers, decomposers. Thanks to them, a flow of substances and energy occurs in the ecosystem through food chains, which forms the basis of the circulation of substances and the self-reproduction of the ecosystem.

PRODUCERS- these are producers of organic matter (autotrophs), i.e. plants, chemosynthetic bacteria and blue-green algae.

CONSUMERS- these are consumers of organic matter, i.e. herbivores, carnivores, omnivores. Consumers are of the 1st order (herbivorous insect, bird, etc.), 2nd order (insectivores, piscivores or predators), 3rd order (predators).

REDUCENTS- these are destroyers of organic matter (rotting and fermentation bacteria, mold fungi, soil mites, worms, carnivorous insects, animals that feed on the secretions of other animals, etc.).

ECOSYSTEM SUSTAINABILITY- this is the ability of an ecosystem to withstand various impacts, maintain relative constancy in the number of species and maintain basic processes in balance. Sustainability directly depends on the number of species! The greater the species diversity, the more stable ecosystem! The reason for this pattern: the more species there are in an ecosystem, the more opportunities organisms have to have alternative types of food, and the greater the chance of survival - if there is a shortage of one food, it is possible to eat another food. Therefore, biodiversity in nature is very important, because... This important condition ecological balance throughout nature, in the biosphere.

SELF-REGULATION OF ECOSYSTEM- the property of an ecosystem to maintain the number of individuals in populations at a relatively constant level. Self-regulation occurs due to the presence in the ecosystem of direct, reverse and indirect connections between organisms. For example, an increase in the number of plants leads to an increase in the number of herbivores, and this leads to an increase in the number of predators (direct connections). But an increase in the number of predators will lead over time to a decrease in the number of herbivores, and an increase in the number of herbivores will lead to a decrease in the number of plants (feedback). Predators influence plant numbers through herbivores (indirect connection).

ECOSYSTEM INTEGRITY- this is the interconnectedness of organisms in an ecosystem, which does not allow them to exist without each other and ensures the flow of all processes in the ecosystem (flow of substances and energy through food chains, self-regulation, circulation of substances).

OPENNESS OF THE ECOSYSTEM- is that an ecosystem can only exist when there is an influx of energy from outside! (the openness of any system lies in the fact that it needs an influx of energy and nutrients from the outside)

SUCCESSION- this is a sequential change over time of some ecosystems by others in a certain territory in the course of their self-development. For example, a swamp may form on the site of a small lake due to gradual shallowing and drying out; in place of the swamp there is a meadow; in place of a forest there is a meadow, in place of a lifeless volcanic island a forest can grow in centuries, etc. During succession, processes always move towards achieving equilibrium in the ecosystem - climax!

CLIMAX- a state in an ecosystem when it is in equilibrium without outside intervention.

PRIMARY SUCCESSION- the process of development of various ecosystems in lifeless areas (on sand dunes, on volcanic islands, on the site of rocky mountains). This succession is the longest, because It takes time for the soil to form first. Sequence of processes:

“Pioneers”, the first settlers - blue-green algae and lichens - settle in lifeless places. When they die, they form a thin layer of soil on which mosses can first settle. Then, as the soil layer increases, grass, shrubs, and trees can grow.

SECONDARY SUCCESSION is the development of one ecosystem in the place of another. Causes of secondary successions: climate change (gradual swamping of the area due to a humid climate), natural disasters (earthquakes, floods, hurricanes, etc.), human activities (deforestation, pollution, plowing, mining, etc. .), pest or disease infestation. Note: if during secondary succession the soil layer has disappeared (due to soil erosion), the processes will follow the type of primary succession.

AGROCENOSIS (agroecosystems, artificial ecosystems)- ecosystems created by man (fields, gardens, aquarium, vegetable gardens, ponds, forest plantations, parks, etc.) Signs of agrocenoses: a small number of species; short power circuits; open cycle of substances (since some of the substances are carried out with the harvest and require the application of fertilizers to the soil); instability; processes are regulated by humans; In addition to solar energy, machine energy, human labor, etc. are used.

RESERVES- specially protected natural areas in which all types of human economic activity are prohibited. Allowed only Scientific research, observations.

RESERVES- these are specially protected natural areas in which, during a certain period of the year, certain types of human economic activity are allowed that do not cause severe harm.

BIOSPHERE- this is a special shell of the Earth inhabited by living organisms. The boundaries of the biosphere are determined in the atmosphere by the action of UV rays (up to the ozone layer, i.e. at an altitude of 20-25 km), in the hydrosphere by the action of high pressure and the absence of light and lack of oxygen (at a depth of 11 km), in the lithosphere - high pressure and temperature, lack of oxygen (at a depth of up to 3 km). The doctrine of the biosphere was created by V.I. Vernadsky, but the term “biosphere” was introduced by E. Suess (1873).

NOOSPHERE (“sphere of the mind”)- a new state of the biosphere, when its existence depends on reasonable human economic activity. The term was introduced by V.I. Vernadsky.

BIOMASS (living matter of the biosphere)- the mass of all living organisms. There are land biomass, ocean biomass, plant biomass, animal biomass, soil biomass, etc. The distribution of biomass is different: in the biosphere, land biomass predominates, on land, plant biomass predominates (since the accumulation of biomass in plants predominates), in the World Ocean, animal biomass predominates (since organic substances produced by plants (phytoplankton and algae) do not accumulate in them, and are immediately consumed by animals). From the equator to the poles, biomass decreases.

FUNCTIONS OF LIVING MATTER- these are the functions of living organisms on a planetary scale. There are 5 main biogeochemical functions:

1. Gas- living organisms, thanks to the processes of photosynthesis and respiration, and azotobacteria, due to their participation in the nitrogen cycle, maintain a certain composition of the atmosphere.
2. Concentration- Living organisms are capable of accumulating certain chemicals. Thanks to this, sedimentary rocks (chalk, lime from the calcareous shells of mollusks and protozoa; silica - from the shells of radiolarians), iron and sulfur ores (the result of the vital activity of sulfur and iron bacteria), peat (from sphagnum deposits), deposits coal(from the remains of ancient pteridophytes), etc. For example, carbon accumulates more in the body of plants, nitrogen, calcium, and phosphorus accumulate in animals.
3. Redox- thanks to metabolism in living organisms, some substances are formed (reduced), while others decompose (oxidize). For example, during photosynthesis, carbon dioxide is reduced to carbohydrates, and during respiration, they are oxidized to carbon dioxide.
4. Destructive- living organisms, participating in the destruction of dead organic matter into inorganic substances, contribute to the formation of soil and the biological cycle of substances in nature, and this is the basis for the stable existence of the biosphere.
5. Biochemical- Various biochemical reactions constantly occur in living organisms.

BIOLOGICAL CYCLE OF SUBSTANCES IN THE BIOSPHERE- these are global processes of transformation of substances in nature, occurring as a result of the movement of chemicals through trophic chains. This process is the basis for the stable existence of the biosphere, i.e. of all life on Earth.

SOIL EROSION- the process of destruction of the fertile soil layer. Water erosion - washing away, wind erosion - weathering of the fertile layer. Reasons: lack of plants, improper irrigation, improper plowing and soil treatment, etc.

RESISTANCE- resistance of organisms to anything.

URBANIZATION is the growth and development of cities, an increase in the share of the urban population.

AGGLOMERATION- cluster around big city nearby settlements.

MEGAPOLIS- large urban agglomerations with a population of more than 1 million people (Bombay, Cairo, NY, Tokyo, Shanghai, Moscow, Beijing).

RESIDENTIAL ZONE (RESIDENTIAL ZONE)- area where residential and administrative buildings, cultural and educational facilities are located.

DEACTIVATION- removal of radioactive contamination from the surface of objects, structures, etc.

MEDIUM CAPACITY- the extent of the ability of the natural or natural-anthropogenic environment to provide normal life activity to a certain number of organisms or communities without noticeable disruption of the environment itself.

IMMIGRATION- the process of natural penetration and settlement of living organisms in places where they did not previously live.

INTRODUCTION- the process of artificially introducing species into places where they did not previously live (for example, the North American muskrat and mink in Siberia)

MELIORATION- a set of measures to improve the water and climate regimes of agroecosystems. There are hydromelioration (irrigation, drainage), agroforestry (creation of forest belts, consolidation of ravines, fight against erosion, landslides, etc.)

HEAVY METALS- metal with a density of more than 8 thousand kg/cubic. m. (lead, zinc, cadmium, cobalt, antimony, tin, bismuth, mercury, copper, nickel.)

CLEANING OF DRAINS- elimination of harmful impurities from wastewater different ways: mechanical (settling, sedimentation, filtration, flotation), physicochemical (coagulation, neutralization, chlorination, ozonation), biological (biofiltration, passage through aeration tanks).

PNEUMOCONIOSIS- a group of occupational diseases caused by inhalation of dusty air (sclerotic changes occur in the lungs): silicosis - when inhaling quartz, sand, mica; silicatosis - when inhaling silicate dust (talc, kaolin, etc.); anthracosis - when inhaling coal dust, aluminosis - aluminum dust; siderosilicosis - iron and quartz dust; anthrasilicosis - coal and quartz dust.

FUNGICIDES- chemicals for combating fungal diseases of cultivated plants.

INSECTICIDES- chemicals for insect control.

HERBICIDES- chemicals for weed control.

EUTROFICATION- “blooming” of a reservoir due to the rapid proliferation of algae in it as a result of pollution with mineral fertilizers.

EREMOPHYTES (psammophytes)- desert plants

EREMOPHILES- desert animals

RHEOPHYTES- plants of fast-flowing rivers or the surf of the sea (often have a ribbon-like shape).

EPHEMEROIDS- perennial organisms with a very short development period; they spend most of the year in a state of rest. For example, snowdrops, some insects (mayflies).

PATIENTS- plants that win the struggle for existence due to their endurance (a kind of “camels” of the plant world)

DEFLATION- the process of wind erosion (weathering of the fertile part of the soil)

SCIENCES AND THEIR OBJECT OF STUDY:

AUTECOLOGY (factorial ecology)- studies the ecology of individual individuals.

DEMECOLOGY- ecology of small groups (populations)

SYNECOLOGY (biocenology)- ecology of communities

GLOBAL ECOLOGY- ecology of the entire planet.

BIOSPHEROLOGY- ecology of the biosphere.

GEOECOLOGY- landscape (geographic) ecology.

SOCIAL ECOLOGY- deals with issues of environmental law, education, culture, medical ecology, environmental forecasting, industrial ecology, urban ecology, etc.

SYSTEMATIC ECOLOGY- ecology of various groups of organisms (fungi, plants, animals, etc.)

ETHOLOGY- the science that studies animal behavior.

ARACHNOLOGY- studies spiders

ALGOLOGY- studies algae

BRYOLOGY- studies mosses

LICHENOLOGY- studies lichens

MYCOLOGY- studies mushrooms

ORNITHOLOGY- studies birds

PROTOZOOLOGY- studies protozoa

ENTOMOLOGY- studies insects

PHENOLOGY- observation of seasonal changes in nature

DENDROLOGY- studies trees

DEMOGRAPHY- studies changes in the number of people, gender and age structure in urban countries, etc.

Information taken from publicly available sources