Spatio-temporal Trends of Nitrogen Deposition and Climate Effects on Sphagnum Productivity in European Peatlands

Type of practice:

Granath, Gustaf/Limpens, Juul/Posch, Maximilian/Mücher, Sander/de Vries, Wim (2014), Spatio-temporal Trends of Nitrogen Deposition and Climate Effects on Sphagnum Productivity in European Peatlands. Environmental Pollution 187 (2014), pp. 73-80.

Abstract:

To quantify potential nitrogen (N) deposition impacts on peatland carbon (C) uptake, the authors 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 the authors 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.

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Year of IA Practice:

2014