The Vaupes Arch and Casiquiare Canal

Kirk O. Winemiller and Stuart C. Willis

in Historical Biogeography of Neotropical Freshwater Fishes

Published by University of California Press

Published in print August 2011 | ISBN: 9780520268685
Published online March 2012 | e-ISBN: 9780520948501 | DOI:
The Vaupes Arch and Casiquiare Canal

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This chapter examines the relationship between the fish faunas of the Amazon and Orinoco river basins and the distributions of species across the Vaupes Arch region and the Casiquiare Canal. It analyzes the differences and similarities in the two faunas and the historical and contemporary geographic and environmental factors that influence fish distributions, speciation, and adaptation. It explains that the Amazon and Orinoco river basins contain extraordinarily diverse assemblages of fishes, crustaceans, and other aquatic organisms, and have long been considered separate biogeographic provinces.

Keywords: fish faunas; Amazon river basin; Casiquiare Canal; Orinoco river basin; Vaupes Arch region; fish distributions; speciation; adaptation; crustaceans; aquatic organisms

Chapter.  10379 words.  Illustrated.

Subjects: Aquatic Biology

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