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Type: Artigo
Title: Fragment Edge And Isolation Affect The Food Web: Effects On The Strength Of Interactions Among Trophic Guilds
Title Alternative: Borda E Isolamento Dos Fragmentos Afetam A Cadeia Alimentar: Efeitos Sobre A Força De Interação Entre Guildas Tróficas
Author: Melo M.M.
Silva C.M.
Barbosa C.S.
Morais M.C.
D’Anunciação P.E.R.
Da Silva V.X.
Hasui É.
Abstract: Habitat loss and fragmentation are processes that may affect communities by changing species interactions. These changes occur because the strength of linkages between species is not exclusively dependent on predator and prey traits. Species interaction changes also depend on the spatial context in which they take place. We used structural equation modelling to evaluate effects of these processes at patch-scale on top-down and bottom-up controls in food webs in Atlantic Forest. The model was composed of multiple species, and trophic guilds responded differently to fragment edge and isolation. Changes in bottom-up and top-down controls were mainly related to intermediate predator interactions. Efforts to restore connectivity among fragments should help recover the equilibrium of the trophic interactions by benefiting intermediate predators. © 2016, Universidade Estadual de Campinas UNICAMP. All rights reserved.
Subject: Atlantic Forest
Patch Size
Patch - Scale
Predator-prey Interaction
Trophic Cascade
Editor: Universidade Estadual de Campinas UNICAMP
Rights: aberto
Identifier DOI: 10.1590/1676-0611-BN-2015-0088
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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