Abstract
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.
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References
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Briand, F., Cohen, J. Community food webs have scale-invariant structure. Nature 307, 264–267 (1984). https://doi.org/10.1038/307264a0
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DOI: https://doi.org/10.1038/307264a0
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