Building Blocks of Biogeography: Biotic Areas and Area Homology

Lynne R. Parenti and Malte C. Ebach

in Comparative Biogeography

Published by University of California Press

Published in print November 2009 | ISBN: 9780520259454
Published online March 2012 | e-ISBN: 9780520944398 | DOI:
Building Blocks of Biogeography: Biotic Areas and Area Homology

Show Summary Details


This chapter discusses the role of biotic areas in biogeography. A biotic area consists of homologous area relationships expressed by more than one monophyletic group that inhabits a common place and/or a designated endemic area. Relationships among biotic areas are recognized as area homologs and area monophyly. An area homolog is the smallest unit of meaningful cladistic relationship among areas. The chapter illustrates methods for discovering area homologies and area monophyly. Area homology is found by comparing area homologs among endemic areas to discover area monophyly or geographical congruence. Area homology, or area monophyly, is discovered when different areagrams are compared and their area homologs corroborate those of other areagrams.

Keywords: biotic areas; biogeography; endemic area; area homologs; area monophyly; geographical congruence; area homology; areagrams

Chapter.  5894 words.  Illustrated.

Subjects: Evolutionary Biology

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.