Distribuição espacial em pequena escala de um anfípode exótico em fragmento florestal e plantio de espécies nativas


Autoria(s): Matavelli, Cristiane; Godoy, Wesley Augusto Conde; Leiner, Natalia Oliveira; Uehara-Prado, Marcio
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/01/2009

Resumo

Anthropogenic interferences in natural environments cause the breakage of spatial and competitive barriers, which may infuence the spatial distribution of species. In this study, we describe the spatial distribution of an exotic amphipod, Talitroides topitotum, in two distinct sites, a forest fragment and a plantation of native arboreal species. We analyzed possible variations in this spatial distribution in different periods of the year and verifed whether the vegetation cover and the litter layer depth may explain the distribution pattern of this species. We performed analyses of frequency distribution to determine the pattern of this species spatial distribution, as well as correlation tests to determine the effect of these two variables of habitat structure. The spatial distribution analysis revealed that T. topitotum presents aggregated distribution in both areas, indicating that this species has low environmental demands or that both areas are below a minimum environmental quality threshold. However, even with this similarity, the population in the fragmented site presented a higher index of aggregation when compared with the population of the plantation site. Corroborating previous studies, there was a negative correlation between abundance of T. topitotum and litter layer depth in the plantation site. Studies on invaded habitats can help understand how invasive species occupy new environments and the factors that can infuence their spatial distribution.

Formato

35-43

Identificador

http://www.revistas.ufg.br/index.php/RBN/article/view/12853

Revista de Biologia Neotropical. , v. 6, n. 2, p. 35-43, 2009.

1807-9652

http://hdl.handle.net/11449/19387

ZOOREC:ZOOR14705040169

ZOORECZOOR14705040169.pdf

Idioma(s)

por

Relação

Revista de Biologia Neotropical

Direitos

openAccess

Tipo

info:eu-repo/semantics/article