Patterns of Small Mammal Species Richness in Mediterranean and Temperate Chile

Hernán L. Cofré, Horacio Samaniego and Pablo A. Marquet

in The Quintessential Naturalist

Published by University of California Press

Published in print July 2007 | ISBN: 9780520098596
Published online March 2012 | e-ISBN: 9780520916159 | DOI:
Patterns of Small Mammal Species Richness in Mediterranean and Temperate Chile

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This chapter analyzes richness and rarity patterns of small mammals (rodents and marsupials) in Mediterranean and Temperate Chile. It tests for the effect of environmental factors that may explain richness and endemism variability after accounting for spatial autocorrelation. The chapter also analyzes the relationship between species traits and correlates of rarity (density and range size) after accounting for phylogenetic relatedness. It shows that energy input and to a lesser degree glaciations may explain richness patterns of small mammals from forest habitats in Chile, whereas glaciations and topographic heterogeneity are associated with endemicity patterns. The chapter observes that when phylogenetic relatedness was accounted for, the number of vegetarian types was the only ecological trait significantly associated with density and latitudinal range. It notes that the results reinforce the importance of energy availability and productivity in determining patterns in biodiversity.

Keywords: richness and rarity; small mammals; rodents and marsupials; Temperate Chile; spatial autocorrelation; species traits; phylogenetic relatedness; energy input; glaciations; biodiversity

Chapter.  8580 words.  Illustrated.

Subjects: Zoology and Animal Sciences

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