Constant connectance in community food webs
Article Abstract:
A major prediction of the constant connectance hypothesis of community food webs was proven by the results of an analysis of 175 community food webs consisting of 9-23 trophic species. According to the hypothesis, trophic links increase approximately as the square of the number of trophic species. The results proved the exponential character of the link-species relationship, thus contradicting the widely accepted link-species scaling law which states that trophic links increase linearly with the number of trophic species.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1992
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Trophic interactions in temperate lake ecosystems: a test of food chain theory
Article Abstract:
The food chain model prediction that the food chain length is limited by the production at the base of the food chain, that is, by primary producers, was investigated. This was done through a comparative study of 11 temperate lake ecosystems of low to intermediate productivity. It was observed that the most unproductive lakes did not have secondary carnivores, whereas the most productive lakes had secondary carnivores. These results provide support for the prediction of the food chain model.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1992
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Scale-invariant or scale-dependent behavior of the link density property in food webs: a matter of sampling effort?
Article Abstract:
Link density is positively affected by sampling procedures, which have been shown to create substantial changes in the scaling behavior of food webs. The introduction of relatively low sampling effort to link density tends to lead in scale invariance in intrinsically scale-dependent food web collections. Analytical results further revealed that efficient classification of food web collections may be achieved by evaluating the presence of trophic links between predator and prey species.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1999
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