Microbial community dynamics in soil depth profiles over 120,000 years of ecosystem development

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dc.identifier.uri http://dx.doi.org/10.15488/1726
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/1751
dc.contributor.author Turner, Stephanie
dc.contributor.author Mikutta, Robert
dc.contributor.author Meyer-Stüve, Sandra
dc.contributor.author Guggenberger, Georg
dc.contributor.author Schaarschmidt, Frank
dc.contributor.author Lazar, Cassandre S.
dc.contributor.author Dohrmann, Reiner
dc.contributor.author Schippers, Axel
dc.date.accessioned 2017-07-17T09:16:18Z
dc.date.available 2017-07-17T09:16:18Z
dc.date.issued 2017
dc.identifier.citation Turner, S.; Mikutta, R.; Meyer-Stüve, S.; Guggenberger, G.; Schaarschmidt, F. et al.: Microbial community dynamics in soil depth profiles over 120,000 years of ecosystem development. In: Frontiers in Microbiology 8 (2017), 874. DOI: https://doi.org/10.3389/fmicb.2017.00874
dc.description.abstract Along a long-term ecosystem development gradient, soil nutrient contents and mineralogical properties change, therefore probably altering soil microbial communities. However, knowledge about the dynamics of soil microbial communities during long-term ecosystem development including progressive and retrogressive stages is limited, especially in mineral soils. Therefore, microbial abundances (quantitative PCR) and community composition (pyrosequencing) as well as their controlling soil properties were investigated in soil depth profiles along the 120,000 years old Franz Josef chronosequence (New Zealand). Additionally, in a microcosm incubation experiment the effects of particular soil properties, i.e., soil age, soil organic matter fraction (mineral-associated vs. particulate), O2 status, and carbon and phosphorus additions, on microbial abundances (quantitative PCR) and community patterns (T-RFLP) were analyzed. The archaeal to bacterial abundance ratio not only increased with soil depth but also with soil age along the chronosequence, coinciding with mineralogical changes and increasing phosphorus limitation. Results of the incubation experiment indicated that archaeal abundances were less impacted by the tested soil parameters compared to Bacteria suggesting that Archaea may better cope with mineral-induced substrate restrictions in subsoils and older soils. Instead, archaeal communities showed a soil age-related compositional shift with the Bathyarchaeota, that were frequently detected in nutrient-poor, low-energy environments, being dominant at the oldest site. However, bacterial communities remained stable with ongoing soil development. In contrast to the abundances, the archaeal compositional shift was associated with the mineralogical gradient. Our study revealed, that archaeal and bacterial communities in whole soil profiles are differently affected by long-term soil development with archaeal communities probably being better adapted to subsoil conditions, especially in nutrient-depleted old soils. eng
dc.language.iso eng
dc.publisher Lausanne : Frontiers Research Foundation
dc.relation.ispartofseries Frontiers in Microbiology 8 (2017)
dc.rights CC BY 4.0
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject Archaea eng
dc.subject Bacteria eng
dc.subject Bathyarchaeota eng
dc.subject Chronosequence eng
dc.subject Pyrosequencing eng
dc.subject qPCR eng
dc.subject Soil depth eng
dc.subject Subsoil eng
dc.subject.ddc 570 | Biowissenschaften, Biologie ger
dc.title Microbial community dynamics in soil depth profiles over 120,000 years of ecosystem development
dc.type article
dc.type Text
dc.relation.issn 1664-302X
dc.relation.doi https://doi.org/10.3389/fmicb.2017.00874
dc.bibliographicCitation.volume 8
dc.bibliographicCitation.firstPage 874
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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