Energy, range dynamics and global species richness patterns: reconciling mid-domain effects and environmental determinants of avian diversity

Storch, David and Davies, Richard G. and Zajicek, Samuel and Orme, C. David L. and Olson, Valerie A. and Thomas, Gavin H. and Ding, Tzung-Su and Rasmussen, Pamela C. and Ridgely, Robert S. and Bennett, Peter M. and Blackburn, Tim M. and Owens, Ian P. F. and Gaston, Kevin J. (2006) Energy, range dynamics and global species richness patterns: reconciling mid-domain effects and environmental determinants of avian diversity. Ecology Letters, 9 (12). pp. 1308-1320. ISSN 1461-023X. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Spatial patterns of species richness follow climatic and environmental variation, but could reflect random dynamics of species ranges (the mid-domain effect, MDE). Using data on the global distribution of birds, we compared predictions based on energy availability (actual evapotranspiration, AET, the best single correlate of avian richness) with those of range dynamics models. MDE operating within the global terrestrial area provides a poor prediction of richness variation, but if it operates separately within traditional biogeographic realms, it explains more global variation in richness than AET. The best predictions, however, are given by a model of global range dynamics modulated by AET, such that the probability of a range spreading into an area is proportional to its AET. This model also accurately predicts the latitudinal variation in species richness and variation of species richness both within and between realms, thus representing a compelling mechanism for the major trends in global biodiversity.

Item Type: Article
Additional information: ISI Document Delivery No.: 107UQ Times Cited: 10 Cited Reference Count: 56 Storch, David Davies, Richard G. Zajicek, Samuel Orme, C. David L. Olson, Valerie Thomas, Gavin H. Ding, Tzung-Su Rasmussen, Pamela C. Ridgely, Robert S. Bennett, Peter M. Blackburn, Tim M. Owens, Ian P. F. Gaston, Kevin J.
Uncontrolled keywords: biogeography climate-richness relationship hotspots latitudinal gradient of diversity mid-domain effect more-individuals hypothesis mountains productivity spatial models species-energy relationship GEOMETRIC CONSTRAINTS LATITUDINAL GRADIENTS TAXONOMIC RICHNESS BAJA-CALIFORNIA BIODIVERSITY CLIMATE SCALE MODELS DISTRIBUTIONS PRODUCTIVITY
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
G Geography. Anthropology. Recreation > GN Anthropology
Divisions: Faculties > Social Sciences > School of Anthropology and Conservation > DICE (Durrell Institute of Conservation and Ecology)
Depositing User: C.G.W.G. van-de-Benderskum
Date Deposited: 09 Sep 2008 10:53
Last Modified: 09 May 2014 09:13
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