Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/3308
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dc.contributor.authorSubke, Jens-Arneen_UK
dc.contributor.authorVoke, Naomi Ren_UK
dc.contributor.authorLeronni, Vincenzoen_UK
dc.contributor.authorGarnett, Mark Hen_UK
dc.contributor.authorIneson, Philen_UK
dc.date.accessioned2013-06-09T11:46:36Z-
dc.date.available2013-06-09T11:46:36Zen_UK
dc.date.issued2011-01en_UK
dc.identifier.urihttp://hdl.handle.net/1893/3308-
dc.description.abstract1. Quantifying pathways and temporal dynamics of carbon (C) flux between plants and soil is critical to our understanding of the long-term fate of C stored in soils. The potential priming of old organic matter decomposition by fresh C input from plants means that the impact of environmental changes on the interactions between plant C allocation and soil C storage need to be better understood. We used forest girdling to investigate the partitioning of total soil CO(2) efflux (R(S)) into autotrophic (R(A)) and heterotrophic (R(H)) flux components and their interaction with litter decomposition. 2. The reduction in R(S) in girdled plots stabilized within two weeks at 65% of control plot values, indicating that R(S) is dominated by R(H), and that only a small pool of available non-structural C remains in roots in late summer to sustain rhizosphere metabolic processes. R(A) contributions declined from 35% late in the growing season to about 25% in winter. 3. Our results indicate that actual root respiration (R(R)) and respiration by ectyomycorrhizas and other rhizospheric organisms (R(M)) contribute c. 50% each to R(A) between September and early November. During winter, R(A) remained significantly greater than zero despite frequent sub-zero air temperatures, with R(M) being a dominant component of R(A) during this period. 4. Forest girdling significantly increased the age of C in soil-respired CO(2), consistent with the removal of contemporary C derived from R(A). Partitioning of soil CO(2) efflux on the basis of 14C results shows good agreement with the flux reduction observed between girdled and control plots. 5. Litter bag incubations indicate a promoting influence of an intact C supply to the rhizosphere on decomposition, indicating a positive rhizosphere priming effect. 6. Synthesis: Our results demonstrate significant contribution of mycorrhizas and other rhizosphere organisms to R(S), and suggest a direct link between an intact rhizosphere and litter decomposition dynamics. These results highlight the tight coupling between autotroph activity and soil decomposition processes in forest soils, and add to the growing body of evidence that plant and soil processes cannot be treated separately.en_UK
dc.language.isoenen_UK
dc.publisherWiley-Blackwell / British Ecological Societyen_UK
dc.relationSubke J, Voke NR, Leronni V, Garnett MH & Ineson P (2011) Dynamics and pathways of autotrophic and heterotrophic soil CO2 efflux revealed by forest girdling. Journal of Ecology, 99 (1), pp. 186-193. https://doi.org/10.1111/j.1365-2745.2010.01740.xen_UK
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author; you can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.rights.urihttp://www.rioxx.net/licenses/under-embargo-all-rights-reserveden_UK
dc.subject14Cen_UK
dc.subjectautotrophic respirationen_UK
dc.subjectbelow-ground interactionsen_UK
dc.subjectectomycorrhizaen_UK
dc.subjectforest girdlingen_UK
dc.subjectheterotrophic respirationen_UK
dc.subjectlitter decompositionen_UK
dc.subjectrhizosphere priming effecten_UK
dc.subjectsoil CO2 effluxen_UK
dc.subjectSoil ecologyen_UK
dc.subjectSoil respirationen_UK
dc.subjectSoil aeration Environmental aspects.en_UK
dc.subjectSoil chemistryen_UK
dc.titleDynamics and pathways of autotrophic and heterotrophic soil CO2 efflux revealed by forest girdlingen_UK
dc.typeJournal Articleen_UK
dc.rights.embargodate3000-01-01en_UK
dc.rights.embargoreason[Subke et al 2011_JEcol.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.identifier.doi10.1111/j.1365-2745.2010.01740.xen_UK
dc.citation.jtitleJournal of Ecologyen_UK
dc.citation.issn1365-2745en_UK
dc.citation.issn0022-0477en_UK
dc.citation.volume99en_UK
dc.citation.issue1en_UK
dc.citation.spage186en_UK
dc.citation.epage193en_UK
dc.citation.publicationstatusPublisheden_UK
dc.citation.peerreviewedRefereeden_UK
dc.type.statusVoR - Version of Recorden_UK
dc.author.emailjens-arne.subke@stir.ac.uken_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
dc.contributor.affiliationUniversity of Yorken_UK
dc.contributor.affiliationUniversity of Bari, Italyen_UK
dc.contributor.affiliationNERC Radiocarbon Facility (Environment)en_UK
dc.contributor.affiliationUniversity of Yorken_UK
dc.identifier.isiWOS:000285301100019en_UK
dc.identifier.wtid834487en_UK
dc.contributor.orcid0000-0001-9244-639Xen_UK
dcterms.dateAccepted2011-01-31en_UK
dc.date.filedepositdate2011-09-02en_UK
rioxxterms.typeJournal Article/Reviewen_UK
rioxxterms.versionVoRen_UK
local.rioxx.authorSubke, Jens-Arne|0000-0001-9244-639Xen_UK
local.rioxx.authorVoke, Naomi R|en_UK
local.rioxx.authorLeronni, Vincenzo|en_UK
local.rioxx.authorGarnett, Mark H|en_UK
local.rioxx.authorIneson, Phil|en_UK
local.rioxx.projectInternal Project|University of Stirling|https://isni.org/isni/0000000122484331en_UK
local.rioxx.freetoreaddate3000-01-01en_UK
local.rioxx.licencehttp://www.rioxx.net/licenses/under-embargo-all-rights-reserved||en_UK
local.rioxx.filenameSubke et al 2011_JEcol.pdfen_UK
local.rioxx.filecount1en_UK
local.rioxx.source0022-0477en_UK
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