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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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PRINTED FROM CALIFORNIA SCHOLARSHIP ONLINE (www.california.universitypressscholarship.com). (c) Copyright University of California Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in CALSO for personal use.date: 19 September 2021

Species Richness and Cladal Diversity

Species Richness and Cladal Diversity

Chapter:
(p.88) (p.89) Five Species Richness and Cladal Diversity
Source:
Historical Biogeography of Neotropical Freshwater Fishes
Author(s):

James S. Albert

Henry J. Bart

Roberto E. Reis

Publisher:
University of California Press
DOI:10.1525/california/9780520268685.003.0005

This chapter describes relationships between species richness and cladal diversity in the two largest regional ichthyofaunas of the Americas: the Amazon and Mississippi superbasins. It explains that species richness profiles of both faunas are hollow curve distributions in which most species are members of a few highly diverse clades and in which most clades are species poor. The species-richness profiles also show that the majority of clades in both faunas were derived from marine lineages during the Cenozoic, although these clades represent only a small fraction of the species.

Keywords:   species richness, cladal diversity, regional ichthyofaunas, Amazon basins, Mississippi basins, marine lineages

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