Accession Number : AD0779875
Title : Diffusion-Induced Instability in Model Ecosystems: Another Possible Explanation of Patchiness.
Descriptive Note : Technical rept.,
Corporate Author : JOHNS HOPKINS UNIV BALTIMORE MD CHESAPEAKE BAY INST
Personal Author(s) : Okubo, Akira
Report Date : MAY 1974
Pagination or Media Count : 23
Abstract : As a diffusion process in an ecosystem tends to give rise to a uniform density of population in space, it may be expected that diffusion plays a general role of increasing the stability in a system of mixed populations and resources. However, diffusion may also induce an instability to a system which is basically stable without diffusion. Thus a system of two interacting and diffusing populations both being co-existent in a spatially uniform distribution, hence with no patterns, may exhibit an interaction-diffusion instability. The instability results in a form of biological waves in space and time, thus leading to a 'patchiness.' (Author)
Descriptors : *AQUATIC ORGANISMS, MATHEMATICAL MODELS, SIMULATION, ECOLOGY, NAVAL RESEARCH, STABILITY, INSTABILITY, DIFFUSION, POPULATION, DISTRIBUTION.
Subject Categories : Biology
Distribution Statement : APPROVED FOR PUBLIC RELEASE