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Addressing the impact of atmospheric nitrogen deposition on European grasslands

Research output: Contribution to journalJournal article

Published

  • Carly Stevens
  • D. J. G. Gowing
  • K.A. Wotherspoon
  • D. Alard
  • P.A. Aarrestad
  • A. Bleeker
  • R. Bobbink
  • M. Diekmann
  • N. B. Dise
  • C. Dupre
  • E. Dorland
  • C. Gaudnik
  • S. Rottier
  • M. Soons
  • E. Corcket
Journal publication date11/2011
JournalEnvironmental Management
Journal number5
Volume48
Number of pages10
Pages885-894
Original languageEnglish

Abstract

There is a growing evidence base demonstrating that atmospheric nitrogen deposition presents a threat to biodiversity and ecosystem function in acid grasslands in Western Europe. Here, we report the findings of a workshop held for European policy makers to assess the perceived importance of reactive nitrogen deposition for grassland conservation, identify areas for policy development in Europe and assess the potential for managing and mitigating the impacts of nitrogen deposition. The importance of nitrogen as a pollutant is already recognized in European legislation, but there is little emphasis in policy on the evaluation of changes in biodiversity due to nitrogen. We assess the potential value of using typical species, as defined in the European Union Habitats Directive, for determining the impact of nitrogen deposition on acid grasslands. Although some species could potentially be used as indicators of nitrogen deposition, many of the typical species do not respond strongly to nitrogen deposition and are unlikely to be useful for identifying impact on an individual site. We also discuss potential mitigation measures and novel ways in which emissions from agriculture could be reduced.