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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.)

No changes in seedling recruitment when terrestrial mammals are excluded in a partially defaunated Atlantic rainforest

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Autor(es):
Brocardo, Carlos R. [1] ; Zipparro, Valesca B. [1] ; de Lima, Renato A. F. [2] ; Guevara, Roger [3] ; Galetti, Mauro [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Estadual Paulista, Dept Ecol, BR-13506900 Rio Claro, SP - Brazil
[2] Univ Sao Paulo, Programa Posgrad Ecol, BR-05508090 Sao Paulo - Brazil
[3] Inst Ecol, AC Dept Biol Evolut, Xalapa 91000, Veracruz - Mexico
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Biological Conservation; v. 163, n. SI, p. 107-114, JUL 2013.
Citações Web of Science: 10
Resumo

One of the most intriguing questions in ecology is how to identify which and how many species will be able to inhabit human-modified landscapes. Large-bodied mammals structure plant communities by trampling, herbivory, seed dispersal and predation, and their local extinction may have pervasive consequences in plant communities due to the breakdown of key interactions. Although much attention has been given to understanding the effects of defaunation on plant communities, information on the potential impacts on plant functional groups (seed dispersal, seed size and seedling leaves defense) inhabiting continuous forests after defaunation is scarce. We conducted mammal surveys (line transects and camera trapping) to determine the defaunation status of a continuous Atlantic forest in Brazil. Then, we evaluated the effects of defaunation on seedling diversity, richness and abundance of functional groups using 15 plot-pairs (each pair with one open and one exclusion plot) monitored over 36 months. We found that the studied area is partially defaunated because it exhibits high abundance of primates, while terrestrial mammals, such as large rodents and ungulates, are rare. We found no significant changes in either seedling richness and diversity or in the seedling composition of plant functional groups in response to mammal exclosure. Seedling mortality and recruitment were similar between plot types. Our findings suggest that at semi-defaunated areas, where arboreal species are still present, terrestrial mammals have low impacts on the plant community reassembly. (C) 2013 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 07/03392-6 - Efeitos de um gradiente de defaunação na herbivoria, predação e dispersão de sementes: uma perspectiva na Mata Atlântica
Beneficiário:Mauro Galetti Rodrigues
Linha de fomento: Auxílio à Pesquisa - Temático