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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Species traits and interaction rules shape a species-rich seed-dispersal interaction network

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Autor(es):
Sebastian-Gonzalez, Esther ; Pires, Mathias M. ; Donatti, Camila I. ; Guimaraes, Jr., Paulo R. ; Dirzo, Rodolfo
Número total de Autores: 5
Tipo de documento: Artigo Científico
Fonte: ECOLOGY AND EVOLUTION; v. 7, n. 12, p. 4496-4506, JUN 2017.
Citações Web of Science: 2
Resumo

Species phenotypic traits affect the interaction patterns and the organization of seed-dispersal interaction networks. Understanding the relationship between species characteristics and network structure help us understand the assembly of natural communities and how communities function. Here, we examine how species traits may affect the rules leading to patterns of interaction among plants and fruit-eating vertebrates. We study a species-rich seed-dispersal system using a model selection approach to examine whether the rules underlying network structure are driven by constraints in fruit resource exploitation, by preferential consumption of fruits by the frugivores, or by a combination of both. We performed analyses for the whole system and for bird and mammal assemblages separately, and identified the animal and plant characteristics shaping interaction rules. The structure of the analyzed interaction network was better explained by constraints in resource exploitation in the case of birds and by preferential consumption of fruits with specific traits for mammals. These contrasting results when looking at bird-plant and mammal-plant interactions suggest that the same type of interaction is organized by different processes depending on the assemblage we focus on. Size-related restrictions of the interacting species (both for mammals and birds) were the most important factors driving the interaction rules. Our results suggest that the structure of seed-dispersal interaction networks can be explained using species traits and interaction rules related to simple ecological mechanisms. (AU)

Processo FAPESP: 09/54567-6 - Redes tróficas do Pleistoceno: estrutura e fragilidade
Beneficiário:Mathias Mistretta Pires
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 13/02819-7 - Características biológicas e padrões de interação em uma rede de dispersão de sementes: inferindo as consequências de defaunação
Beneficiário:Esther Sebastián González
Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado