Partitioning Forest-Floor Respiration into Source Based Emissions in a Boreal Forested Bog: Responses to Experimental Drought

Simple item page
dc.contributor.authorMunir, Tariq
dc.contributor.authorKhadka, Bhupesh
dc.contributor.authorXu, Bin
dc.contributor.authorStrack, Maria
dc.date.accessioned2017-03-14T23:50:25Z
dc.date.available2017-03-14T23:50:25Z
dc.date.issued2017-03-10
dc.description.abstractNorthern peatlands store globally significant amounts of soil carbon that could be released to the atmosphere under drier conditions induced by climate change. We measured forest floor respiration (RFF) at hummocks and hollows in a treed boreal bog in Alberta, Canada and partitioned the flux into aboveground forest floor autotrophic, belowground forest floor autotrophic, belowground tree respiration, and heterotrophic respiration using a series of clipping and trenching experiments. These fluxes were compared to those measured at sites within the same bog where water‐table (WT) was drawn down for 2 and 12 years. Experimental WT drawdown significantly increased RFF with greater increases at hummocks than hollows. Greater RFF was largely driven by increased autotrophic respiration driven by increased growth of trees and shrubs in response to drier conditions; heterotrophic respiration accounted for a declining proportion of RFF with time since drainage. Heterotrophic respiration was increased at hollows, suggesting that soil carbon may be lost from these sites in response to climate change induced drying. Overall, although WT drawdown increased RFF, the substantial contribution of autotrophic respiration to RFF suggests that peat carbon stocks are unlikely to be rapidly destabilized by drying conditionsen_US
dc.description.grantingagencyUniversity of Calgary, Alberta Innovates Technology Futures, Queen Elizabeth II Award, John D. Petrie Award and Karl C. Iverson Awarden_US
dc.description.refereedYesen_US
dc.description.sponsorshipUniversity of Calgaryen_US
dc.identifier.citationMunir, M.T.; Khadka, B.; Xu, B.; Strack, M. Partitioning forest‐floor respiration into source  based emissions in a boreal forested bog: responses  to experimental drought. Forests 2017, 8(3). doi:10.3390/f8030075en_US
dc.identifier.doi10.3390/f8030075
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/33290
dc.identifier.issn1999-4907
dc.identifier.urihttp://hdl.handle.net/1880/51861
dc.language.isoen_USen_US
dc.publisherMDPIen_US
dc.publisher.departmentGeographyen_US
dc.publisher.institutionUniversity of Calgaryen_US
dc.publisher.urlhttp://www.mdpi.com/1999-4907/8/3/75en_US
dc.relation.ispartofseriesForest Soil Respiration under Climate Changing;
dc.rightsAttribution No Derivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/*
dc.subjectforest floor respiration; root respiration; autotrophic respiration; heterotrophic respiration; disturbance; water table; drought; climate change; modeling; soil temperatureen_US
dc.subjectClimate Changeen_US
dc.titlePartitioning Forest-Floor Respiration into Source Based Emissions in a Boreal Forested Bog: Responses to Experimental Droughten_US
dc.title.alternativeBoreal Forest Respiration, Autotrophic Respiration, Heterotrophic Respiration and Climate Changeen_US
dc.typejournal article
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Munir et al. 2017. Forest Soil Respiration and Climate Change_Published 10March2017.pdf
Size:
4.27 MB
Format:
Adobe Portable Document Format
Description:
Main Article
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.95 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Arts Research & Publications