A Bayesian network approach to trophic metacommunities shows that habitat loss accelerates top species extinctions.

ABSTRACT: We develop a novel approach to analyse trophic metacommunities, which allows us to explore how progressive habitat loss affects food webs. Our method combines classic metapopulation models on fragmented landscapes with a Bayesian network representation of trophic interactions for calculating local extinction rates. This means that we can repurpose known results from classic metapopulation theory for trophic metacommunities, such as ranking the habitat patches of the landscape with respect to their importance to the persistence of the metacommunity as a whole. We use this to study the effects of habitat loss, both on model communities and the plant-mammal Serengeti food web dataset as a case study. Combining straightforward parameterisability with computational efficiency, our method permit

SUBMITTER: Haussler J 

PROVIDER: S-EPMC7702078 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature