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Climate Change Induces Shifts in Abundance and Activity Pattern of Bacteria and Archaea Catalyzing Major Transformation Steps in Nitrogen Turnover in a Soil from a Mid-European Beech Forest

Gschwendtner, Silvia; Tejedor, Javier 1,2; Bimueller, Carolin; Dannenmann, Michael 1,2; Knabner, Ingrid Kögel; Schloter, Michael
1 Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU), Karlsruher Institut für Technologie (KIT)
2 Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT)

Abstract:

Ongoing climate change will lead to more extreme weather events, including severe drought periods and intense drying rewetting cycles. This will directly influence microbial nitrogen (N) turnover rates in soil by changing the water content and the oxygen partial pressure. Therefore, a space for time climate change experiment was conducted by transferring intact beech seedling-soil mesocosms from a northwest (NW) exposed site, representing today’s climatic conditions, to a southwest (SW) exposed site, providing a model climate for future conditions with naturally occurring increased soil temperature (+0.8˚C in average). In addition, severe drought and intense rainfall was simulated by a rainout shelter at SW and manual rewetting after 39 days drought, respectively. Soil samples were taken in June, at the end of the drought period (August), 24 and 72 hours after rewetting (August) and after a regeneration period of four weeks (September). To follow dynamics of bacterial and archaeal communities involved in N turnover, abundance and activity of nitrifiers, denitrifiers, N2-fixing microbes and N-mineralizers was analyzed based on marker genes and the related transcripts by qPCR from DANN and RNA directly extracted from soil. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000049188
Originalveröffentlichung
DOI: 10.1371/journal.pone.0114278
Scopus
Zitationen: 24
Web of Science
Zitationen: 18
Dimensions
Zitationen: 30
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 02.12.2014
Sprache Englisch
Identifikator ISSN: 1932-6203
urn:nbn:de:swb:90-491884
KITopen-ID: 1000049188
HGF-Programm 12.02.01 (POF II, LK 01) Glob.Wandel und Auswirk. auf Ökosysteme
Erschienen in PLoS one
Verlag Public Library of Science (PLoS)
Band 9
Heft 12
Seiten Art.Nr. e114278
Nachgewiesen in Scopus
Dimensions
Web of Science
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