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Effects of forest fragmentation, introduced Rattus rattus and the role of exotic tree plantations and secondary vegetation for the conservation of an endemic rodent and a small lemur in littoral forests of southeastern Madagascar by Jean-Baptiste Ramanamanjato; Jörg U. Ganzhorn is a Environmental Science article available to read on EtoBox.

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## Abstract We sought to assess the effects of forest fragmentation, introduced __Rattus rattus__, exotic tree plantations and secondary vegetation on the endemic rodent __Eliurus webbi__ (Nesomyinae) and the lemur __Microcebus murinus__ in the littoral forests of southern Madagascar. For __E. webbi__ the number of individuals caught, the body mass of males and the percentage of females in the population were positively correlated with the size of the forest fragments. Capture rates and population characteristics of the other two species were uncorrelated with fragment size. None of the endemic species was caught outside the native forest while __R. rattus__ inhabited all vegetation formations except for a newly planted corridor of tree saplings. Capture rates of both endemic species were uncorrelated with the number of __R. rattus__ caught at the same site and thus did not indicate replacement of native species by __R. rattus__. The study demonstrated negative effects of fragmentation on capture rates of __E. webbi__ and changes in their population characteristics. Exotic tree plantations or secondary vegetation seem to represent unsuitable or marginal habitats for the endemic spe

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Author

Jean-Baptiste Ramanamanjato; Jörg U. Ganzhorn

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Wiley-Blackwell; Wiley; Cambridge University Press (CUP) (ISSN 1367-9430)

Published

2001

Language

EN

Field

Environmental Science (Physical Sciences)