Seed dispersal and spatial distribution of Attalea geraensis (Arecaceae) in two remnants of Cerrado in Southeastern Brazil


Autoria(s): de Almeida, Lilian Bonjorne; Galetti, Mauro
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/09/2007

Resumo

The seed dispersal system of Attalea geraensis (Arecaceae), an acaulescent palm, was investigated during one year in two Cerrado fragments in the state of São Paulo, southeastern Brazil. A. geraensis had inflorescences and infrutescences throughout the year. Two scatter-hoarding rodents (the spiny rat, Clyomys bishopi and agoutis, Dasyptocta azarae) were identified as seed predators/dispersers, able to move seeds up to 30 in from the palms, although most of the fruits (57.5%) were dispersed less than 2 in. The removal rates were high and after 20 days, 97.2% of the fruits were removed. Fruit fate was not related to fruit mass, length and diameter. The application of Morisita's index showed a more clumped distribution of adults in the smaller fragment, probably because of the absence of agoutis. Higher seed removal by rodents in the large Cerrado remnant may decrease seed predation by beetles. (C) 2007 Elsevier Masson SAS. All rights reserved.

Formato

180-187

Identificador

http://dx.doi.org/10.1016/j.actao.2007.04.001

Acta Oecologica-international Journal of Ecology. Paris: Gauthier-villars/editions Elsevier, v. 32, n. 2, p. 180-187, 2007.

1146-609X

http://hdl.handle.net/11449/19566

10.1016/j.actao.2007.04.001

WOS:000250113300007

Idioma(s)

eng

Publicador

Elsevier B.V.

Relação

Acta Oecologica: International Journal of Ecology

Direitos

closedAccess

Palavras-Chave #Attalea #Arecaceae #scatter-hoarding rodents #seed dispersal #seed predation #spatial distribution
Tipo

info:eu-repo/semantics/article