La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	An overhaul of the species-area approach for predicting biodiversity loss: incorporating matrix and edge effects
Auteurs :	Lian Pin Koh, Auteur ; Tien Ming Lee, Auteur ; Navjot S. Sodhi, Auteur ; Jaboury Ghazoul, Auteur
Type de document :	Article
Dans :	Journal of Applied Ecology (47(5) OCT 2010)
Article en page(s) :	1063-1070
Langues:	Anglais
Résumé :	P>1. Species-area (SA) models have often been used to predict biodiversity loss resulting from habitat loss. This application of SA models hinges on two fundamental assumptions: the resultant landscape matrix is inhospitable to the taxa of interest; and edge effects do not factor into extinction risks. Despite growing consensus that these assumptions are unrealistic, the SA approach continues to be used in assessments of biodiversity decline and conservation planning. 2. We propose an overhaul of the SA approach by accounting for taxon-specific responses to landscape-specific matrix quality and deleterious effects of habitat edges. We pitted nine variants of an improved SA model (calibrated for edge and/or matrix) against two variants of the conventional model (calibrated with island or continental z values) to predict species extinction and endangerment in

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