STEVENS, Carly J.; DUPRE, Cecilia; DORLAND, Edu; GAUDNIK, Cassandre; GOWING, David J.G.; BLEEKER, Albert; DIEKMANN, Martin; ALARD, Didier; BOBBINK, Roland; FOWLER, David; CORCKET, Emmanuel; MOUNTFORD, J. Owen; VANDVIK, Vigdis; AARRESTAD, Per Arild; MULLER, Serge; DISE, Nancy B.

doi:10.1016/j.envpol.2010.06.006

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STEVENS, Carly J.
Open University
Lancaster Environment Centre

DUPRE, Cecilia
Universität Bremen [Deutschland] = University of Bremen [Germany] = Université de Brême [Allemagne]

DORLAND, Edu
Universität Bremen [Deutschland] = University of Bremen [Germany] = Université de Brême [Allemagne]

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Article de revue

Ce document a été publié dans

Environmental Pollution. 2010, vol. 158, n° 9, p. 2940-2945

Elsevier

Résumé en anglais

Evidence from an international survey in the Atlantic biogeographic region of Europe indicates that chronic nitrogen deposition is reducing plant species richness in acid grasslands. Across the deposition gradient in this region (2–44 kg N ha−1 yr−1) species richness showed a curvilinear response, with greatest reductions in species richness when deposition increased from low levels. This has important implications for conservation policies, suggesting that to protect the most sensitive grasslands resources should be focussed where deposition is currently low. Soil pH is also an important driver of species richness indicating that the acidifying effect of nitrogen deposition may be contributing to species richness reductions. The results of this survey suggest that the impacts of nitrogen deposition can be observed over a large geographical range. Atmospheric nitrogen deposition is reducing biodiversity in grasslands across Europe.< Réduire

Mots clés

ACIDIFICATION

ATMOSPHERIC NITROGEN DEPOSITION

SOIL PH

PRAIRIE ACIDE

Mots clés en anglais

ACID GRASSLANDS

SPECIES RICHNESS