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Movement patterns of five species of small mammals in a Brazilian restinga

Published online by Cambridge University Press:  10 July 2009

Rosana Gentile  and
Rui Cerqueira
Rosana Gentile
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio de Janeiro, CP 68020, Rio de Janeiro, Brasil
Rui Cerqueira
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio de Janeiro, CP 68020, Rio de Janeiro, Brasil
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Abstract

During the course of a population study of small mammals in a Brazilian coastal shrubland we calculated the movements between successive captures, the residence time, the indices of aggregation and the kinds of movements of the five most common species of small mammal. A capture-mark-recapture study was undertaken over two years, quarterly. Philander opossum, Akodon cursor and Proechimys iheringi presented low mobility, with a high proportion of restricted movements, long residence time and larger coefficients of aggregation. Didelphis aurita and Metachirus nudicaudatus presented higher mobility and exploratory movements, short residence time and small coefficients of aggregation. The species with lower mobility had permanent populations within our sampling grid, while the species with higher mobility used areas outside the grid, presenting no local populations but occupying portions of regional metapopulations.

Keywords

aggregationBrazilhome rangemark—recapturemarsupialsmovementspopulationsrodentsshrublandsmall mammals
Type
Research Article
Information
Journal of Tropical Ecology , Volume 11 , Issue 4 , November 1995 , pp. 671 - 677
Copyright
Copyright © Cambridge University Press 1995

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