The effect of introducing a winter forage rotation on CO2 fluxes at a temperate grassland

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dc.contributor.author Leahy, Paul G.
dc.contributor.author Kiely, Gerard
dc.date.accessioned 2012-09-18T10:39:56Z
dc.date.available 2012-09-18T10:39:56Z
dc.date.copyright 2012
dc.date.issued 2012-08
dc.identifier.citation Leahy, P.; Kiely, G. (2012) 'The effect of introducing a winter forage rotation on CO2 fluxes at a temperate grassland'. Agriculture Ecosystems & Environment, 156 :49-56. doi: http://dx.doi.org/10.1016/j.agee.2012.05.001 en
dc.identifier.volume 156 en
dc.identifier.startpage 49 en
dc.identifier.endpage 56 en
dc.identifier.issn 0167-8809
dc.identifier.uri http://hdl.handle.net/10468/707
dc.identifier.doi 10.1016/j.agee.2012.05.001
dc.description.abstract Temperate grasslands have the potential to sequester carbon, helping to mitigate rising atmospheric CO2 concentrations. The ability of grasslands to absorb CO2 is influenced by site elevation, soil type, management practices, climate and climatic variability. There is a need for long-term observations and field experiments to quantify the effects of the key drivers of management and climate variability. This paper presents over 4 years of eddy covariance measurements of CO2 flux over a managed temperate grassland site in south-east Ireland. For the first 2 years the entire study area was under grass. During the second 2 years a winter forage crop was grown over part of the site. The site was found to have a net uptake of CO2 during all years. However, the magnitude of the CO2 uptake varied considerably from year to year, with a maximum net uptake of 1.32 kg CO2 m−2 in 2004, a year with no winter forage crop. Net uptakes were much lower in the 2 years of mixed grass and kale cultivation, but detailed analysis of the measurement footprint and statistical comparisons showed that this was not due to the introduction of the forage rotation. For a short period following sowing of the forage crop, daytime CO2 uptake was less than that of the area under grass, but over subsequent months daytime CO2 uptake of the kale areas recovered strongly and exceeded that of the grass areas. The net effect over the year following kale planting is close to CO2-neutral. en
dc.description.sponsorship Environmental Protection Agency (STRIVE programme Celticflux; 2001-CD-C2-M1); European Commission (EU 6th Framework project CarboEurope-IP); Science Foundation Ireland (Stokes Lectureship programme) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Elsevier en
dc.rights Copyright © 2012, Elsevier. NOTICE: this is the author’s version of a work that was accepted for publication in Agriculture, Ecosystems & Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Agriculture, Ecosystems & Environment, [156, 1 August 2012] http://dx.doi.org/10.1016/j.agee.2012.05.001 en
dc.subject Net ecosystem exchange en
dc.subject Land use en
dc.subject Eddy covariance en
dc.subject Ireland en
dc.subject Kale en
dc.title The effect of introducing a winter forage rotation on CO2 fluxes at a temperate grassland en
dc.title.alternative Effects of a winter forage crop rotation on CO2 fluxes at a managed grassland en
dc.type Article (peer-reviewed) en
dc.internal.authorurl http://research.ucc.ie/profiles/D012/paulleahy en
dc.internal.authorurl http://research.ucc.ie/profiles/D012/gkiely en
dc.internal.authorcontactother Paul Leahy, Civil Engineering, University College Cork, Cork, Ireland. +353-21-490-3000 Email: paul.leahy@ucc.ie en
dc.internal.authorcontactother Gerard Kiely, Civil Engineering, University College Cork, Cork, Ireland. +353-21-490-3000 Email: g.kiely@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2012-09-17T12:13:44Z
dc.description.version Accepted Version en
dc.internal.rssid 166096661
dc.contributor.funder Environmental Protection Agency en
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder European Commission en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Agriculture Ecosystems & Environment en
dc.internal.copyrightchecked No en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress paul.leahy@ucc.ie en


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