Busca avançada
Ano de início
Entree
(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.)

Loss of Generalist Plant Species and Functional Diversity Decreases the Robustness of a Seed Dispersal Network

Texto completo
Autor(es):
Bastazini, Vinicius A. G. [1, 2] ; Debastiani, Vanderlei J. [2] ; Azambuja, Bethania O. [2] ; Guimaraes Jr, Paulo R. ; Pillar, Valerio D. [3]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Paul Sabatier Univ, Theoreticai & Expt Ecol Stn, Natl Ctr Sci Res, 2 Route CNRS, F-09200 Moulis - France
[2] Univ Fed Rio Grande do Sul, Grad Program Ecol, BR-91501970 Porto Alegre, RS - Brazil
[3] Univ Fed Rio Grande do Sul, Dept Ecol, BR-91501970 Porto Alegre, RS - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: ENVIRONMENTAL CONSERVATION; v. 46, n. 1, SI, p. 52-58, MAR 2019.
Citações Web of Science: 0
Resumo

Understanding cascading effects of species loss is a major challenge for ecologists. Traditionally, the robustness of ecological networks has been evaluated based on simulation studies where primary extinctions occur at random or as a function of species specialization, ignoring other important biological factors. Here, we estimate the robustness of a seed dispersal network from a grassland-forest mosaic in southern Brazil, simulating distinct scenarios of woody plant species extinction, including scenarios where species are eliminated based on their evolutionary and functional distinctiveness. Our results suggest that the network is more robust when species are eliminated based on their evolutionary uniqueness, followed by random extinctions, the extinction of the most specialist species, functional distinctiveness and, at last, when the most generalist species are sequentially eliminated. Our results provide important information for grassland-forest mosaic management, as they indicate that loss of generalist species and functional diversity makes the system more likely to collapse. (AU)

Processo FAPESP: 17/08406-7 - Como a perda e adição de espécies e interações influencia a dinâmica coevolutiva em redes mutualistas?
Beneficiário:Paulo Roberto Guimarães Junior
Linha de fomento: Auxílio à Pesquisa - Regular