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Article Dans Une Revue Journal of Applied Ecology Année : 2007

How landscape structure, land-use intensity and habitat diversity affect components of total arthropod diversity in agricultural landscapes

Frédéric Hendrickx
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  • PersonId : 831228
Walter van Wingerden
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Marjan Speelmans
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Stéphanie Aviron
Regula Billeter
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  • PersonId : 831229
Felix Herzog

Résumé

1. Agricultural intensification poses a serious threat to biodiversity as a consequence of increased land-use intensity, decreased landscape heterogeneity and reduced habitat diversity. Although there is interest in the preservation of total species richness of an agricultural landscape (γ diversity), the effects of intensification have been assessed primarily by species richness at a local scale (α diversity). This ignores species richness between local communities (β diversity), which is an important component of total species richness. 2. In this study, measures of land-use intensity, landscape structure and habitat diversity were related to γ, α and β diversity of wild bees (Apoidea), carabid beetles (Carabidae), hoverflies (Syrphidae), true bugs (Heteroptera) and spiders (Araneae) within 16 local communities in 24 temperate European agricultural landscapes. 3. The total landscape species richness of all groups was most strongly affected by increased proximity of semi-natural habitat patches. Bees also decreased in landscapes with a high intensity of farmland management, demonstrating additive effects of both factors. 4. Separating total species diversity into components, the decrease in total species richness could be attributed primarily to a decrease in species diversity between local communities. Species richness of the local communities of all investigated groups decreased with increasing land-use intensity and, in the case of spiders, decreasing proximity of the semi-natural habitat patches. 5. The effect of increased habitat diversity appeared to be of secondary importance to total species richness but caused a shift in the relative contribution of α and β diversity towards the latter.

Dates et versions

hal-00162516 , version 1 (13-07-2007)

Identifiants

Citer

Frédéric Hendrickx, Jean-Pierre Maelfait, Walter van Wingerden, Oliver Schweiger, Marjan Speelmans, et al.. How landscape structure, land-use intensity and habitat diversity affect components of total arthropod diversity in agricultural landscapes. Journal of Applied Ecology, 2007, 44 (2), pp.340-351. ⟨10.1111/j.1365-2664.2006.01270.x⟩. ⟨hal-00162516⟩
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