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Natural revegetation of bog pools after peatland restoration involving ditch blocking—The influence of pool depth and implications for carbon cycling

Peacock, Mike; Evans, Chris D.; Fenner, Nathalie and Freeman, Chris (2013). Natural revegetation of bog pools after peatland restoration involving ditch blocking—The influence of pool depth and implications for carbon cycling. Ecological Engineering, 57 pp. 297–301.

DOI (Digital Object Identifier) Link: https://doi.org/10.1016/j.ecoleng.2013.04.055
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Abstract

Throughout the last two centuries peatlands have been subject to extensive drainage, typically through the digging of ditches. Ecosystem restoration now focusses on damming or infilling these ditches to increase biodiversity and to provide a range of ecosystem services such as carbon sequestration and water provision. We surveyed 60 bog pools created following ditch blocking (alone) on a blanket bog in north Wales. Eighteen months after restoration the mean total pool vegetation cover was 76%. There was a strong negative relationship between pool depth and Eriophorum cover (r2 = 0.74), and a weaker positive relationship between depth and Sphagnum cover (r2 = 0.35). Observations showed that pools had been colonised by various invertebrate species. Pool dissolved organic carbon (DOC) concentrations were not connected to pool vegetation, suggesting that catchment-scale processes drive DOC. Other studies have shown that Eriophorum generates large methane fluxes, and that Sphagnum can act as a methane sink. Therefore we recommend that pools should be deeper than 0.5 m to give the greatest carbon benefit, whilst noting that this is unlikely to significantly affect DOC fluxes.

Item Type: Journal Item
Copyright Holders: 2013 Elsevier
ISSN: 0925-8574
Keywords: Ditch blocking; Vegetation; DOC; Bog pool; Peatland restoration; Greenhouse gas
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 47901
Depositing User: Michael Peacock
Date Deposited: 29 Nov 2016 15:44
Last Modified: 07 Dec 2018 10:46
URI: http://oro.open.ac.uk/id/eprint/47901
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