Smith David F
Division of Fisheries and Oceanography, C.S.I.R.O., 2230, Cronulla, N.S.W.
Oecologia. 1975 Mar;21(1):17-29. doi: 10.1007/BF00345890.
A formal approach to the analysis of ecosystem stability has resulted in a theoretically important finding; the stability of an ecosystem can be enhanced by increasing the number of non-linear interactions that exist between the ecosystem components.The stability analysis presented in this paper does not depend upon differential equations which have been postulated to describe an ecosystem on theoretical grounds. The analysis employs a power-law approximation and requires that experimental data be obtained only for the species of interest, not for all the components of the ecosystem. The proposed stability analysis makes it possible for one to predict the consequences of removing one or more species or combinations of species from an ecosystem. Some systems will possess steady state solutions even after one or more species or combinations of species have become extinct; other systems are unable to achieve any subsequent steady state and will suffer further collapse. The stability analysis presented in this paper allows one to predict each and every possible combination of system components whose extinction will result in further disruption of the ecosystem. The stability analysis described here permits one to predict the number of steady state solutions possessed by the ecosystem and the values of the system variables in each of those steady states.
通过增加生态系统各组成部分之间存在的非线性相互作用的数量，可以提高生态系统的稳定性。本文所呈现的稳定性分析并不依赖于基于理论假设来描述生态系统的微分方程。该分析采用幂律近似，并且仅要求获取所关注物种的实验数据，而非生态系统所有组成部分的数据。所提出的稳定性分析使人们能够预测从生态系统中移除一个或多个物种或物种组合的后果。即使一个或多个物种或物种组合灭绝后，一些系统仍将拥有稳态解；而其他系统则无法达到任何后续的稳态，并将遭受进一步的崩溃。本文所呈现的稳定性分析使人们能够预测生态系统中哪些系统组成部分的灭绝将导致生态系统进一步破坏的每一种可能组合。这里所描述的稳定性分析允许人们预测生态系统所拥有的稳态解的数量以及每个稳态中系统变量的值。
