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A mesocosm study of the effect of restoration on methane (CH4) emissions from blanket peat

Green, Sophie ; Baird, Andy J.; Boardman, Carl P. and Gauci, Vincent (2014). A mesocosm study of the effect of restoration on methane (CH4) emissions from blanket peat. Wetlands Ecology and Management, 22(5) pp. 523–537.

DOI (Digital Object Identifier) Link: https://doi.org/10.1007/s11273-014-9349-3
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Abstract

In a mesocosm study, we investigated the effect of different restoration methods on methane (CH4) emissions from, and the global warming potential (GWP) of, blanket peat. The controlled laboratory study involved two distinct components: Experiment 1 focused on greenhouse gas exchanges from blocked drains (grips) and evaluated the effects of restoration method, water-level dynamics and climate on CH4 emissions and GWP. Experiment 2 assessed the role of plant functional type (PFT) on CH4 emissions from restored peat outside of the grip. A nine month meteorological simulation (April–December) was completed, testing five hypotheses across the two experiments. We found that the method of grip blocking/damming does make a difference with respect to CH4 emissions and GWP. Of the methods considered, damming with no infill between the dams is preferred to either of the methods involving infilling (heather bale and re-profiling).

GWP of all within-grip restoration outcomes was positive (i.e., indicating a net warming effect), and was not influenced by climate or water-level regime. PFT influences CH4 emissions but not GWP in restored blanket bog. When considering radiative forcing, this finding suggests that it does not matter which PFT dominates a restored area. It is noted that the laboratory findings are, in some senses, preliminary because the experiments consider only a relatively short period immediately after restoration.

Item Type: Journal Item
Copyright Holders: 2014 Springer Science+Business Media Dordrecht
ISSN: 1572-9834
Project Funding Details:
Funded Project NameProject IDFunding Body
Grip BlockingGrant SP1202Defra
Keywords: blanket peatlands; restoration; methane flux; gobal warming potential
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
OpenSpace Research Centre (OSRC)
International Development & Inclusive Innovation
Item ID: 39885
Depositing User: Vincent Gauci
Date Deposited: 10 Apr 2014 13:08
Last Modified: 09 Feb 2017 13:25
URI: http://oro.open.ac.uk/id/eprint/39885
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