Soil Bacterial and Fungal Communities Exhibit Distinct Long-Term Responses to Disturbance in Temperate Forests

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dc.contributor.authorOsburn, Ernest D.en
dc.contributor.authorMcBride, Steven Glynn IIen
dc.contributor.authorAylward, Frank O.en
dc.contributor.authorBadgley, Brian D.en
dc.contributor.authorStrahm, Brian D.en
dc.contributor.authorKnoepp, Jennifer D.en
dc.contributor.authorBarrett, John E.en
dc.contributor.departmentBiological Sciencesen
dc.contributor.departmentForest Resources and Environmental Conservationen
dc.contributor.departmentSchool of Plant and Environmental Sciencesen
dc.date.accessioned2020-02-20T15:39:29Zen
dc.date.available2020-02-20T15:39:29Zen
dc.date.issued2019-12-11en
dc.description.abstractIn Appalachian ecosystems, forest disturbance has long-term effects on microbially driven biogeochemical processes such as nitrogen (N) cycling. However, little is known regarding long-term responses of forest soil microbial communities to disturbance in the region. We used 16S and ITS sequencing to characterize soil bacterial (16S) and fungal (ITS) communities across forested watersheds with a range of past disturbance regimes and adjacent reference forests at the Coweeta Hydrologic Laboratory in the Appalachian mountains of North Carolina. Bacterial communities in previously disturbed forests exhibited consistent responses, including increased alpha diversity and increased abundance of copiotrophic (e.g., Proteobacteria) and N-cycling (e.g., Nitrospirae) bacterial phyla. Fungal community composition also showed disturbance effects, particularly in mycorrhizal taxa. However, disturbance did not affect fungal alpha diversity, and disturbance effects were not consistent at the fungal class level. Co-occurrence networks constructed for bacteria and fungi showed that disturbed communities were characterized by more connected and tightly clustered network topologies, indicating that disturbance alters not only community composition but also potential ecological interactions among taxa. Although bacteria and fungi displayed different long-term responses to forest disturbance, our results demonstrate clear responses of important bacterial and fungal functional groups (e.g., nitrifying bacteria and mycorrhizal fungi), and suggest that both microbial groups play key roles in the long-term alterations to biogeochemical processes observed following forest disturbance in the region.en
dc.description.adminPublic domain – authored by a U.S. government employeeen
dc.description.notesThis work was funded by the Coweeta LTER, funded by National Science Foundation grant DEB-1637522.en
dc.description.sponsorshipCoweeta LTER; National Science FoundationNational Science Foundation (NSF) [DEB-1637522]en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.3389/fmicb.2019.02872en
dc.identifier.issn1664-302Xen
dc.identifier.other2872en
dc.identifier.pmid31921050en
dc.identifier.urihttp://hdl.handle.net/10919/96946en
dc.identifier.volume10en
dc.language.isoenen
dc.rightsCreative Commons CC0 1.0 Universal Public Domain Dedicationen
dc.rights.urihttp://creativecommons.org/publicdomain/zero/1.0/en
dc.subjectsoilen
dc.subjectmicrobial communityen
dc.subjectforest managementen
dc.subjectqPCRen
dc.subject16Sen
dc.subjectITSen
dc.titleSoil Bacterial and Fungal Communities Exhibit Distinct Long-Term Responses to Disturbance in Temperate Forestsen
dc.title.serialFrontiers in Microbiologyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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