Back to Search
Start Over
Effects of anthropogenic habitat disturbance on local pollinator diversity and species turnover across a precipitation gradient.
- Source :
- Biodiversity & Conservation; Jan2010, Vol. 19 Issue 1, p257-274, 18p, 6 Graphs
- Publication Year :
- 2010
-
Abstract
- Anthropogenic habitat disturbance can have profound effects on multiple components of forest biotas including pollinator assemblages. We assessed the effect of small-scale disturbance on local richness, abundance, diversity and evenness of insect pollinator fauna; and how habitat disturbance affected species turnover across the landscape and overall diversity along a precipitation gradient in NW Patagonia (Argentina). We evaluated the effect of disturbance on overall pollinator fauna and then separately for bees (i.e. Apoidea) and non-bee pollinators. Locally, disturbed habitats had significantly higher pollinator species richness and abundances than undisturbed habitats for the whole pollinator assemblage, but not for bees or non-bees separately. However, significant differences in species richness between habitats vanished after accounting for differences in abundance between habitat types. At a local scale Shannon-Weaver diversity and evenness did not vary with disturbance. A β diversity index indicated that, across forest types, species turnover was lower between disturbed habitats than between undisturbed habitats. In addition, rarefaction curves showed that disturbed habitats as a whole accumulated fewer species than undisturbed habitats at equivalent sample sizes. We concluded that small patches of disturbed habitat have a negligible effect on local pollinator diversity; however, habitat disturbance reduced β diversity through a homogenization of the pollinator fauna (in particular of bees) across the landscape. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09603115
- Volume :
- 19
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Biodiversity & Conservation
- Publication Type :
- Academic Journal
- Accession number :
- 47164886
- Full Text :
- https://doi.org/10.1007/s10531-009-9720-5