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dc.contributor.authorJuottonen, Heli
dc.date.accessioned2020-01-29T13:57:42Z
dc.date.available2020-01-29T13:57:42Z
dc.date.issued2020
dc.identifier.citationJuottonen, H. (2020). Disentangling the effects of methanogen community and environment on peatland greenhouse gas production by a reciprocal transplant experiment. <i>Functional Ecology</i>, <i>34</i>(6), 1268-1279. <a href="https://doi.org/10.1111/1365-2435.13536" target="_blank">https://doi.org/10.1111/1365-2435.13536</a>
dc.identifier.otherCONVID_34460886
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/67600
dc.description.abstractNorthern peatlands consist of a mosaic of peatland types that vary spatially and temporally and differ in their methane (CH4) production. Microbial community composition and environment both potentially control the processes that release carbon from anoxic peat either as CH4 or carbon dioxide (CO2), a less potent greenhouse gas than CH4. However, the respective roles of these controls remain unclear, which prevents incorporating microbes in the predictions of peatland CH4 emissions. 2.Here, a reciprocal transplant experiment was carried out to separate the influences of microbial community and environment in CH4 and anaerobic CO2 production. Peat from an acidic Sphagnum bog and a sedge fen with higher pH was enclosed in membrane bags with a pore size of 0.2 µm, preventing microbial colonization from the outside, and transplanted in the field for two months. 3.Potential CH4 production was primarily controlled by the environment. The conditions in the bog suppressed the initially higher activity of fen methanogens and reduced CH4 production by 79%. Against expectations, the inhibition was not specific to acetate‐using Methanotrichaceae. Reciprocal transplantation favoured Methanosarcinaceae and potentially methylotrophic methanogenesis in general. Bog methanogens, mostly hydrogenotrophic Methanoregulaceae, retained their community structure and activity in the fen with a slight increase (+37%) in CH4 production. 4.Anaerobic CO2 production was controlled by both the microbial community and the environment. Transplantation led to increased CO2 production in both bog (+50%) and fen peat (+57%) with distinct bacterial community, showing that the new environment directed more carbon to other anaerobic processes than methanogenesis. 5.Taken together, these results relate differences in CH4 production of bogs and fens to ecophysiology of specific methanogen groups. The sensitiveness of fen methanogens to the acidic conditions in Sphagnum bogs can help explain the decrease of CH4 emission in the typical boreal peatland succession from young fens to older bogs. Increase in anaerobic CO2 vs. CH4 production with transplantation shows that disturbances of boreal peatlands can activate poorly defined pathways of anaerobic decomposition.en
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofseriesFunctional Ecology
dc.rightsIn Copyright
dc.subject.otheranaerobic decomposition
dc.subject.otherbog
dc.subject.otherboreal peatland
dc.subject.otherfen
dc.subject.othermethane
dc.subject.othermethanogenic archaea
dc.subject.othermicrobial community
dc.subject.otherreciprocal transplantation
dc.titleDisentangling the effects of methanogen community and environment on peatland greenhouse gas production by a reciprocal transplant experiment
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202001291867
dc.contributor.laitosBio- ja ympäristötieteiden laitosfi
dc.contributor.laitosDepartment of Biological and Environmental Scienceen
dc.contributor.oppiaineEkologia ja evoluutiobiologiafi
dc.contributor.oppiaineEcology and Evolutionary Biologyen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.description.reviewstatuspeerReviewed
dc.format.pagerange1268-1279
dc.relation.issn0269-8463
dc.relation.numberinseries6
dc.relation.volume34
dc.type.versionacceptedVersion
dc.rights.copyright© 2020 British Ecological Society
dc.rights.accesslevelopenAccessfi
dc.subject.ysomikrobit
dc.subject.ysosuot
dc.subject.ysohajoaminen
dc.subject.ysoboreaalinen vyöhyke
dc.subject.ysoletot
dc.subject.ysometaani
dc.subject.ysoturvemaat
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p5424
jyx.subject.urihttp://www.yso.fi/onto/yso/p10981
jyx.subject.urihttp://www.yso.fi/onto/yso/p8927
jyx.subject.urihttp://www.yso.fi/onto/yso/p16692
jyx.subject.urihttp://www.yso.fi/onto/yso/p18602
jyx.subject.urihttp://www.yso.fi/onto/yso/p13222
jyx.subject.urihttp://www.yso.fi/onto/yso/p17343
dc.rights.urlhttp://rightsstatements.org/page/InC/1.0/?language=en
dc.relation.datasethttps://doi.org/10.5061/dryad.sn02v6x16
dc.relation.doi10.1111/1365-2435.13536
jyx.fundinginformationThis work was funded by the Academy of Finland (project 133743) and Emil Aaltonen Foundation.


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