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(Reference retrieved automatically from Google Scholar through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effects of structural and functional connectivity and patch size on the abundance of seven Atlantic Forest bird species

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Author(s):
Uezu‚ A. ; Metzger‚ J.P. ; Vielliard‚ J.M.E.
Total Authors: 3
Document type: Journal article
Source: Biological Conservation; v. 123, n. 4, p. 507-519, 2005.
Abstract

We studied the importance of fragment size and structural and functional connectivity on the occurrence and abundance of seven Atlantic Forest bird species in 13 patches (13-275 ha) and three sites within a continuous forest (10,000 ha). We sampled birds with point counts and evaluated structural connectivity considering the presence of corridors and the degree of isolation. We defined functional connectivity by analyzing species movements using playbacks in forest corridors between fragments and in the surrounding matrix. Species differed in their responses to fragmentation. For the frugivorous species, Trogon surrucura, Carpornis cucullatus and Triclaria malachitacea, patch size was the main factor determining abundance. Two understory insectivorous species, Basileuterus leucoblepharus and Pyriglena leucoptera, were more affected by the degree of patch connectivity, the former by the presence of corridors and the latter by the distance between patches. The capacity of P. leucoptera to use corridors and open areas (i.e. functional connectivity) shaped its abundance pattern. Fragmentation had no effect on the abundance of Chiroxiphia caudata and had a positive effect on Batara cinerea. This study emphasizes the importance of considering species' perceptions of landscape, especially functional connectivity, in understanding the effects of habitat fragmentation. (c) 2005 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 99/05123-4 - Biodiversity conservation in fragmented landscapes at the Atlantic Plateau of São Paulo (Brazil)
Grantee:Jean Paul Walter Metzger
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 00/01120-0 - Effect of the size of fragment and of the type of matrix in the abundance of six species of forest birds in Caucaia do Alto, São Paulo
Grantee:Alexandre Uezu
Support Opportunities: Scholarships in Brazil - Master