Shape of ecological networks.
نویسندگان
چکیده
We study the statistics of ecosystems with a variable number of coevolving species. The species interact in two ways: by prey-predator relationships and by direct competition with similar kinds. The interaction coefficients change slowly through successful adaptations and speciations. They are treated as quenched random variables. These interactions determine long-term topological features of the species network, which are found to agree with those of biological systems.
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عنوان ژورنال:
- Physical review letters
دوره 86 19 شماره
صفحات -
تاریخ انتشار 2001