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Modeling food webs: exploring unexplained structure using latent traits

Rohr, Rudolf Philippe ; Scherer, Heike ; Kehrli, Patrik ; Mazza, Christian ; Bersier, Louis-Félix

In: The American Naturalist, 2010, vol. 176, no. 2, p. 170-177

Several stochastic models have tried to capture the architecture of food webs. This approach is interesting, but it is limited by the fact that different assumptions can yield similar results. To overcome this limitation, we develop a purely statistical approach. Body size in terms of an optimal ratio between prey and predator is used as explanatory variable. In 12 observed food webs, this model...