Spatio-temporal trends of nitrogen deposition and climate effects on Sphagnum productivity in European peatlands

G. Granath, J. Limpens, M. Posch, S. Mücher, W. de Vries

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)

Abstract

To quantify potential nitrogen (N) deposition impacts on peatland carbon (C) uptake, we explored temporal and spatial trends in N deposition and climate impacts on the production of the key peat forming functional group (Sphagnum mosses) across European peatlands for the period 1900–2050. Using a modelling approach we estimated that between 1900 and 1950 N deposition impacts remained limited irrespective of geographical position. Between 1950 and 2000 N deposition depressed production between 0 and 25% relative to 1900, particularly in temperate regions. Future scenarios indicate this trend will continue and become more pronounced with climate warming. At the European scale, the consequences for Sphagnum net C-uptake remained small relative to 1900 due to the low peatland cover in high-N areas. The predicted impacts of likely changes in N deposition on Sphagnum productivity appeared to be less than those of climate. Nevertheless, current critical loads for peatlands are likely to hold under a future climate.
Original languageEnglish
Pages (from-to)73-80
JournalEnvironmental Pollution
Volume187
DOIs
Publication statusPublished - 2014

Keywords

  • carbon accumulation
  • n deposition
  • boreal mire
  • bogs
  • growth
  • vegetation
  • impact
  • mosses
  • forest
  • emissions

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