Constant connectance in community food webs

Research output: Contribution to journalArticle

226 Scopus citations

Abstract

The constant connectance hypothesis states that among community food webs, trophic links increase approximately as the square of the number of functionally distinct or "trophic' species. This hypothesis is corroborated by analysis of 175 community food webs (2-93 trophic species), which shows that the exponent of the link-species relationship is approximately two. This scaling contradicts the widely accepted link-species scaling law, which asserts that links increase linearly with the number of species and that the link- species exponent is one. Large food webs have many more links and much longer food chains than previously suggested. -from Author

Original languageEnglish (US)
Pages (from-to)1208-1218
Number of pages11
JournalAmerican Naturalist
Volume139
Issue number6
DOIs
StatePublished - Jan 1 1992
Externally publishedYes

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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