When to stay, when to go: trade-offs for southern African arid-zone birds in times of drought

Arid environments remind one of the punctuated equilibriumtheory of evolution: they experience long periods of stasis and low productivity, interrupted with episodic rainfall which spurs reproduction and movement. Birds, as highly dispersive organisms, are among the most dramatic indicators of these...

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Bibliographic Details
Main Authors: W.R.J. Dean, P. Barnard, M.D. Anderson
Format: Article
Language:English
Published: Academy of Science of South Africa 2009-12-01
Series:South African Journal of Science
Online Access:http://192.168.0.115/index.php/sajs/article/view/10060