Habitat modification alters the structure of tropical host-parasitoid food webs

Article Abstract:

Marked food changes were found in food-web structure across the modification gradient, despite little variation in species richness, when 48 quantitative food webs for cavity-nestling bees and wasps across various tropical habitat types were analyzed. The results indicate that studies of human influences might be overlooking important alterations to community structure, species interactions and ecosystem functions as the studies are entirely focused on diversity and richness metrics.

Analysis, Habitat (Ecology), Habitat modification, Nutritional aspects, Bees

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Food-web interactions govern the resistance of communities after non-random extinctions

Article Abstract:

It is shown that the consequences of random and ordered extinctions differ. Both depend on the food-web interactions that create compensation, that is, the increase of some species when their competitors and/or predators decrease in density due to environmental stress.

United States, Influence, Extinction (Biology)

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Universal scaling relations in food webs

Article Abstract:

General features of topology of food web are identified and described as transportation networks by conceptualizing allometric scaling. The study is focused on to search for regularities or universal patterns by comparing food web.

Allometry

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