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Historical Biogeography of Neotropical Freshwater Fishes$
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James Albert

Print publication date: 2011

Print ISBN-13: 9780520268685

Published to California Scholarship Online: March 2012

DOI: 10.1525/california/9780520268685.001.0001

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Neogene Assembly of Modern Faunas

Neogene Assembly of Modern Faunas

(p.118) (p.119) Seven Neogene Assembly of Modern Faunas
Historical Biogeography of Neotropical Freshwater Fishes

James S. Albert

Tiago P. Carvalho

University of California Press

This chapter examines the assembly of modern faunas in South America during the Neogene period. It presents a Brooks Parsimony Analysis (BPA) of published species-level phylogenies for freshwater fishes of tropical South America. The result indicates that the taxonomic composition of the modern river basins predates the rise of the Michicola, Fitzcarrald, and Vaupes Arches that fragmented the Sub-Andean Foreland. The findings also suggest that the semipermeable watershed barriers facilitated a mosaic assembly of regional species pools, intermittently separating and mixing the faunas of adjacent basins.

Keywords:   modern faunas, South America, Neogene period, BPA, species-level phylogenies, freshwater species, river basins

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