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Ecosystem-like behavior of a random-interaction model I

โœ Scribed by Ken Tregonning; Alan Roberts

Publisher
Springer
Year
1978
Tongue
English
Weight
504 KB
Volume
40
Category
Article
ISSN
1522-9602

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โœฆ Synopsis

The behavior of large systems of randomly-interacting variables is examined using an intentionally simplified model. The stable positive solutions are found to exhibit to a significant degree some well-known properties of ecological systems. This resemblance (including for example the predominance of"predator-prey" interactions) is all the more striking in view of the lack ofbiological"data" at the input end. The findings suggest it advisable to distinguish two kinds of properties in ecosystems. One kind would depend on specifically biological mechanisms; the other would characterize a wide class of persistent systems, and arise from the need for a dynamic balance between positive and negative feedback.

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Data on biomass, production and metabolism of the biota, gathered during many years in the Rybinsk Reservoir, USSR, were used to calculate functional interconnections between separate components of the ecosystem, neglecting fluctuations of biomass and postulating a stationary state of the system .