COMMUNITY FOOD WEBS HAVE SCALE-INVARIANT STRUCTURE

COMMUNITY FOOD WEBS HAVE SCALE-INVARIANT STRUCTURE
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DOI:
10.1038/307264a0
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发表时间:
1984-01-01
期刊:
影响因子:
64.8
通讯作者:
COHEN, JE
COHEN, JE
中科院分区:
综合性期刊1区
文献类型:
--
作者:
BRIAND, F;COHEN, JE

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我们分析了62个来自已发表研究的群落食物网,发现了生态系统结构的一个显着规律:在生物群落中,顶部,中间和底部物种的比例,平均而言,独立于物种总数。因此,猎物和捕食者的数量之间存在直接的比例关系。
We have analysed 62 community food webs drawn from published studies and have found a remarkable regularity in ecosystem structure: in biological communities, the proportions of top, intermediate and basal species are, on average, independent of the total number of species. Hence, there is a direct proportionality between the numbers of prey and predators.