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condition of an ecosystem at the level of norm.

– situation in ecosystem being at a critical stability point.

capacity of an ecosystem to accelerated rehabilitation of itself.

stable state of a community (ecosystem) that is in equilibrity with general climatic conditions.

– intermediate stage of the ecosystem development maintained by regular sharp physical perturbations.

– penetration into ecosystem of alien to it pollutants in concentrations exceeding the background ones.

introduction into ecosystem of abiotic alluviums alien to its nature disturbing its natural functioning.

impact which is not deducing the ecosystem from the level of admissible conditions (level of stability).

consequence of catastrophe, equilibrium state of an ecosystem (environment) at an extremely low energy level.

stable community (ecosystem) which is not a climatic or edaphic climax for the given surroundings. A.s. is maintained by a man or domestic animals.

heightened inflow of energy or matter resulted from human activity causing the suppression of functions of ecosystem; it can be acute or chronic (by Yu. Odum).

penetration into ecosystem and generation in a large number of species alien to it. Pollution by micro-organisms is also called bacteriological or microbiological impurit

— introduction in ecosystem of sources of physical energy, expressing in deviation from a norm of its temperature-power, wave, radioactive and other physical characterist

penetration into ecosystem and generation in large numbers of alien species of organisms in ecosystem. Pollution by micro-organisms is also called bacteriological or micr

interrelation between organisms through which passes a transformation of a substance and energy in ecosystem; groups of species connected with one another by a relation:

capability of a community on a basis of usage of matter and energy to reproduce an organic matter. B.p. is usually assessed by biological commodity, net and gross, expres

negative changes in the environmental conditions caused by anthropogenic activities as a result of environmental impact, environmental contamination, exhaustion of the re

(1) When it is used in respect of biological species, ecosystem or another natural systems, it refers to the level beyond which further deterioration is likely to precipi