Data/hora: 03/06/2024 06:22:18

Provedor de dados: | 42
País: | Brazil
Título: | Species richness and relative abundance of birds in natural and anthropogenic fragments of Brazilian Atlantic forest
Autores: | Anjos,Luiz dos.
Data: | 2004-06-01
Ano: | 2004
Palavras-chave: | Birds; Bioacoustics; Brazilian Atlantic forest; Conservation; Forest fragmentation.
Resumo: | Bird communities were studied in two types of fragmented habitat of Atlantic forest in the State of Paraná, southern Brazil; one consisted of forest fragments that were created as a result of human activities (forest remnants), the other consisted of a set of naturally occurring forest fragments (forest patches). Using quantitative data obtained by the point counts method in 3 forest patches and 3 forest remnants during one year, species richness and relative abundance were compared in those habitats, considering species groups according to their general feeding habits. Insectivores, omnivores, and frugivores presented similar general tendencies in both habitats (decrease of species number with decreasing size and increasing isolation of forest fragment). However, these tendencies were different, when considering the relative abundance data: the trunk insectivores presented the highest value in the smallest patch while the lowest relative abundance was in the smallest remnant. In the naturally fragmented landscape, time permitted that the loss of some species of trunk insectivores be compensated for the increase in abundance of other species. In contrast, the remnants essentially represented newly formed islands that are not yet at equilibrium and where future species losses would make them similar to the patches.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200036
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/S0001-37652004000200036
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.76 n.2 2004
Fonte: | info:eu-repo/semantics/openAccess