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Grazing increases the temperature sensitivity of soil organic matter decomposition in a temperate grassland

Paz-Ferreiro, Jorge; Medina-Roldán, Eduardo; Ostle, Nick J.; McNamara, Niall P.; Bardgett, Richard D.. 2012 Grazing increases the temperature sensitivity of soil organic matter decomposition in a temperate grassland. Environmental Research Letters, 7 (1), 014027. 10.1088/1748-9326/7/1/014027

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Abstract/Summary

Letter We tested the effects of ungulate grazing and nutrient availability on the temperature sensitivity of soil respiration (CO2) and methane (CH4) emissions in semi-natural temperate grassland. To do this, soil taken from long term grazed and ungrazed grassland was incubated at four temperatures (4, 10, 15 and 20 °C) with two levels of nutrient (NP) addition. The results showed that the variation in soil CO2 and CH4 emissions was explained by temperature and grazing, with grazing increasing the temperature sensitivity of CO2 and CH4 production by between 15 and 20 °C. This response was constrained by nutrient availability for CO2, but not CH4. These findings suggest that grazing could potentially have important impacts on the temperature sensitivity of greenhouse gas emissions in nutrient limited grasslands.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1088/1748-9326/7/1/014027
Programmes: CEH Topics & Objectives 2009 - 2012 > Biogeochemistry
CEH Sections: Shore
ISSN: 1748-9326
Additional Information. Not used in RCUK Gateway to Research.: This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
NORA Subject Terms: Ecology and Environment
Agriculture and Soil Science
Date made live: 21 Jan 2013 12:18 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/21116

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