Show simple item record

dc.contributor.authorZhou, Xuan
dc.contributor.authorSun, Hui
dc.contributor.authorPumpanen, Jukka
dc.contributor.authorSietiö, Outi-Maaria
dc.contributor.authorHeinonsalo, Jussi
dc.contributor.authorKöster, Kajar
dc.contributor.authorBerninger, Frank
dc.date.accessioned2018-12-17T12:52:10Z
dc.date.available2018-12-17T12:52:10Z
dc.date.issued2018
dc.identifier.urihttps://erepo.uef.fi/handle/123456789/7203
dc.description.abstractWildfires thaw near-surface permafrost soils in the boreal forest, making previously frozen organic matter available to microbes. The short-term microbial stoichiometric dynamics following a wildfire are critical to understanding the soil element variations in thawing permafrost. Thus, we selected a boreal wildfire chronosequence in a region of continuous permafrost, where the last wildfire occurred 3, 25, 46, and > 100 years ago (set as the control) to explore the impact of wildfire on the soil chemistry, soil microbial stoichiometry, and the fungal-to-bacterial gene ratio (F:B ratio). We observed the microbial biomass C:N:P ratio remained constant in distinct age classes indicating that microbes are homeostatic in relation to stoichiometric ratios. The microbial C:N ratios were independent of the shifts in the fungal-to-bacterial ratio when C:N exceeded 12. Wildfire-induced reduction in vegetation biomass positively affected the fungal, but not the bacterial, gene copy number. The decline in microbial biomass C, N, and P following a fire, primarily resulted from a lack of soil available C and nutrients. Wildfire affected neither the microbial biomass nor the F:B ratios at a soil depth of 30 cm. We conclude that microbial stoichiometry does not always respond to changes in the fungal-to-bacterial ratio and that wildfire-induced permafrost thawing does not accelerate microbial respiration.
dc.language.isoenglanti
dc.publisherSpringer Nature America, Inc
dc.relation.ispartofseriesBIOGEOCHEMISTRY
dc.relation.urihttp://dx.doi.org/10.1007/s10533-018-0510-6
dc.rightsCC BY http://creativecommons.org/licenses/by/4.0/
dc.subjectwildfire
dc.subjectboreal forest
dc.subjectpermafrost
dc.subjectmicrobial biomass
dc.subjectC:N:P stoichiometry
dc.subjecthomeostasis
dc.subjectfungal-to-bacterial ratio
dc.titleThe impact of wildfire on microbial C:N:P stoichiometry and the fungal-to-bacterial ratio in permafrost soil
dc.description.versionpublished version
dc.contributor.departmentYmpäristö- ja biotieteiden laitos / Toiminta
uef.solecris.id58772038en
dc.type.publicationTieteelliset aikakauslehtiartikkelit
dc.rights.accessrights© Authors
dc.relation.doi10.1007/s10533-018-0510-6
dc.description.reviewstatuspeerReviewed
dc.format.pagerange1-17
dc.publisher.countryAlankomaat
dc.relation.issn0168-2563
dc.relation.issue1
dc.relation.volume142
dc.rights.accesslevelopenAccess
dc.type.okmA1
uef.solecris.openaccessHybridijulkaisukanavassa ilmestynyt avoin julkaisu


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record