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Effects of different nitrogen forms, ammonia gas and wet deposited ammonium and nitrate, on methane and nitrous oxide emissions from an ombrotrophic bog, Whim Moss, in the Scottish Borders

Sheppard, L. J.; Leith, I. D.; Field, C.; van Dijk, N.; Rung, M.; Skiba, U.. 2008 Effects of different nitrogen forms, ammonia gas and wet deposited ammonium and nitrate, on methane and nitrous oxide emissions from an ombrotrophic bog, Whim Moss, in the Scottish Borders. [Lecture] In: After Wise Use - The future of peatlands, Tullamore, Ireland, 8-13 June 2008. Finland, International peat society, 628-632.

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Abstract/Summary

Enhanced reactive nitrogen deposition may compromise the sustainability and functioning of bogs, with respect to carbon sequestration and greenhouse gas production. Since 2002, three N forms have been applied to an ombrotrophic bog growing Calluna, Sphagnum capillifolium and Eriophorum vaginatum in order to test this. Significant changes in species cover and soil chemistry, especially in response to elevated ammonia concentrations, have been recorded. Ammonia deposition has also increased nitrous oxide emissions, while the same N dose as ammonium or nitrate had a far smaller effect. Methane emissions were increased by nitrate additions, although fluxes were equally responsive to water table and temperature. The significance of N form, and ’natural’ drivers, is discussed.

Item Type: Publication - Conference Item (Lecture)
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry > BG01 Measuring and modelling trace gas, aerosol and carbon > BG01.3 Nitroeurope NEU advanced flux network, fluxes pools and budgets
CEH Sections: Billett
Additional Keywords: Bogs, methane, nitrous oxide, sustainability, reactive nitrogen
NORA Subject Terms: Botany
Agriculture and Soil Science
Biology and Microbiology
Ecology and Environment
Data and Information
Date made live: 19 Feb 2009 15:47
URI: http://nora.nerc.ac.uk/id/eprint/5513

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