La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Effects of land management on the abundance and richness of spiders (Araneae): A meta-analysis
Auteurs :	Samuel Prieto-Benitez, Auteur ; Marcos Mendez, Auteur
Type de document :	Article
Dans :	Biological Conservation (144(2) FEB 2011)
Article en page(s) :	683-691
Langues:	Anglais
Résumé :	Human land use, through forest management and conversion of natural habitats into agroecosystems, has often resulted in loss of biodiversity. Spiders are important predators in terrestrial ecosystems, biological control agents against pests in agroecosystems and forests, and useful indicators due to their sensibility to changes in habitat structure and microclimate. Effects of land use on spiders have been reviewed several times but existing reviews are narrative and usually focused on one single kind of management. We summarize the impacts of land use on spider abundance and species richness using meta-analysis. The main ecosystems where the effect of management on spiders has been studied were forests, agroecosystems and rangelands (including meadows and grasslands). Although our survey retrieved studies from all parts of the world and climatic zones, a dominance of studies from temperate habitats in Europe and North America was evident. The meta-analysis showed negative effects on spider species richness and abundance for agroecosystems and rangelands, but were less evident for forests. From

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