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Nitrogen deposition and reduction of terrestrial biodiversity: Evidence from temperate grasslands
Authors:Nancy B Dise  Carly J Stevens
Institution:1. Department of Earth Sciences, Open University, Milton Keynes, MK7 6AA, UK;Department of Biology, Villanova University, Villanova, PA 19085, USA
2. Department of Earth Sciences, Open University, Milton Keynes, MK7 6AA, UK;Department of Agricultural Science, Imperial College at Wye, Wye, Ashford, TN25 4NJ, UK
Abstract:Biodiversity is thought to be essential for ecosystem stability, function and long-term sustainability. Since nitrogen is the limiting nutrient for plant growth in many terrestrial ecosystems, reactive nitrogen has the potential to reduce the diversity of terrestrial vegetation and associated biota through favouring species adapted to quickly exploiting available nutrients. Although the potential has long been recognised, only recently has enough evidence come together to show beyond reasonable doubt that these changes are already occurring. Linked together, experimental, regional/e.rnpirical, and time-series research provide a powerful argument that enhanced deposition of reactive nitrogen across Great Britain, and potentially the rest of Europe, has resulted in a significant and ongoing decline in grassland species richness and diversity.
Keywords:nitrogen deposition  terrestrial biodiversity  temperate grasslands
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