Chapter

Diversification of Small Mammals in the Atlantic Forest of Brazil: Testing the Alternatives

Márcia C. Lara, Lena Geise and Christopher J. Schneider

in Mammalian Diversification

Published by University of California Press

Published in print January 2006 | ISBN: 9780520098534
Published online March 2012 | e-ISBN: 9780520916098 | DOI: http://dx.doi.org/10.1525/california/9780520098534.003.0010
Diversification of Small Mammals in the Atlantic Forest of Brazil: Testing the Alternatives

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This chapter examines the phylogeographic patterns among rodents of the Brazilian Atlantic Forest. Based on comparative analyses of mitochondrial DNA sequences from rodents, it suggests that the diversification of these taxa is not the result of shared environmental pressures, but instead, likely reflects the distinctive phylogeographic and environmental histories of each lineage. The evidence also provides some support to the Ecological Gradient Hypothesis in the distribution of sister species/clades in different habitats within mountain ranges.

Keywords: rodents; phylogeographic patterns; Brazilian Atlantic Forest; mitochondrial DNA sequences; Ecological Gradient Hypothesis

Chapter.  7894 words.  Illustrated.

Subjects: Zoology and Animal Sciences

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