A cost-effective method for reducing soil disturbance-induced errors in static chamber measurement of wetland methane emissions

dc.contributor.author

Winton, RS

dc.contributor.author

Richardson, CJ

dc.date.accessioned

2017-11-01T14:07:46Z

dc.date.available

2017-11-01T14:07:46Z

dc.date.issued

2016-08-01

dc.description.abstract

© 2015, Springer Science+Business Media Dordrecht. Static chambers used for sampling methane (CH 4 ) in wetlands are highly sensitive to soil disturbance. Temporary compression around chambers during sampling can inflate the initial chamber CH 4 headspace concentration and/or lead to generation of non-linear, unreliable flux estimates that must be discarded. In this study, we tested an often-used rubber gasket (RG)-sealed static chamber against a water-filled gutter (WFG) seal design that could be set up and sampled from a distance of 2 m with a newly designed remote rod sampling system to reduce soil disturbance. Compared to conventional RG design, our remotely sampled static chambers reduced the chance of detecting inflated initial CH 4 concentrations ( > 3.6 ppm) from 66 to 6 % and nearly doubled the proportion of robust linear regressions (r 2   >  0.9) from 45 to 86 %. Importantly, the remote rod sampling system allows for more accurate and reliable CH 4 sampling without costly boardwalk construction. This paper presents results demonstrating that the remote rod sampling system combined with WFG static chambers improves CH 4 data reliability by reducing initial gas measurement variability due to chamber disturbance when tested on a mineral soil-restored wetland in Charles City County, Virginia, USA.

dc.identifier.eissn

1572-9834

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0923-4861

dc.identifier.uri

https://hdl.handle.net/10161/15702

dc.publisher

Springer Science and Business Media LLC

dc.relation.ispartof

Wetlands Ecology and Management

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10.1007/s11273-015-9468-5

dc.title

A cost-effective method for reducing soil disturbance-induced errors in static chamber measurement of wetland methane emissions

dc.type

Journal article

pubs.begin-page

419

pubs.end-page

425

pubs.issue

4

pubs.organisational-group

Duke

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Environmental Sciences and Policy

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Marine Science and Conservation

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Nicholas School of the Environment

pubs.publication-status

Published

pubs.volume

24

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