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Incumbency, diversity, and latitudinal gradients

Published online by Cambridge University Press:  08 April 2016

James W. Valentine
Affiliation:
Department of Integrative Biology and Museum of Paleontology, University of California, Berkeley, California 95720. E-mail: jwvsossi@socrates.berkeley.edu
David Jablonski
Affiliation:
Department of Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue, Chicago, Illinois 60637. E-mail: djablons@uchicago.edu
Andrew Z. Krug
Affiliation:
Department of Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue, Chicago, Illinois 60637. E-mail: akrug@uchicago.edu
Kaustuv Roy
Affiliation:
Section of Ecology, Behavior and Evolution, Division of Biological Sciences, University of California, San Diego, 9500 Gillman Drive, La Jolla, California 92093. E-mail: kroy@biomail.ucsd.edu

Extract

Physical environmental factors have been seen as paramount in determining many large-scale biodistributional patterns in time and space. Although this is probably correct for many situations, this view has become so pervasive that it has led to the neglect of the role of biotic interactions in setting large-scale diversity patterns. (In this paper diversity denotes taxonomic richness.) New approaches to this perennial debate on the roles of physical and biotic forces in paleoecology and macroevolution are needed, and here we explore an argument for the role of incumbency or priority effects in the dynamics behind the most dramatic spatial pattern in biodiversity, the latitudinal diversity gradient.

Information

Type
Matters of the Record
Copyright
Copyright © The Paleontological Society 

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