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- Rofner, CarinaUniv Innsbruck, Inst Ecol, Lake & Glacier Ecol Res Grp, Technikerstr 25, Innsbruck, Austria. (författare)
Climate-related changes of soil characteristics affect bacterial community composition and function of high altitude and latitude lakes
- Artikel/kapitelEngelska2017
Förlag, utgivningsår, omfång ...
- 2016-11-25
- Wiley,2017
- electronicrdacarrier
Nummerbeteckningar
- LIBRIS-ID:oai:DiVA.org:uu-322511
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-322511URI
- https://doi.org/10.1111/gcb.13545DOI
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- Språk:engelska
- Sammanfattning på:engelska
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- Lakes at high altitude and latitude are typically unproductive ecosystems where external factors outweigh the relative importance of in-lake processes, making them ideal sentinels of climate change. Climate change is inducing upward vegetation shifts at high altitude and latitude regions that translate into changes in the pools of soil organic matter. Upon mobilization, this allochthonous organic matter may rapidly alter the composition and function of lake bacterial communities. Here, we experimentally simulate this potential climate-change effect by exposing bacterioplankton of two lakes located above the treeline, one in the Alps and one in the subarctic region, to soil organic matter from below and above the treeline. Changes in bacterial community composition, diversity and function were followed for 72 h. In the subarctic lake, soil organic matter from below the treeline reduced bulk and taxon-specific phosphorus uptake, indicating that bacterial phosphorus limitation was alleviated compared to organic matter from above the treeline. These effects were less pronounced in the alpine lake, suggesting that soil properties (phosphorus and dissolved organic carbon availability) and water temperature further shaped the magnitude of response. The rapid bacterial succession observed in both lakes indicates that certain taxa directly benefited from soil sources. Accordingly, the substrate uptake profiles of initially rare bacteria (copiotrophs) indicated that they are one of the main actors cycling soil-derived carbon and phosphorus. Our work suggests that climate-induced changes in soil characteristics affect bacterioplankton community structure and function, and in turn, the cycling of carbon and phosphorus in high altitude and latitude aquatic ecosystems.
Ämnesord och genrebeteckningar
- NATURVETENSKAP Biologi Ekologi hsv//swe
- NATURAL SCIENCES Biological Sciences Ecology hsv//eng
- allochthonous organic carbon
- bacterial production
- dissolved organic matter
- diversity
- heterotrophic
- phosphorus limitation
- terrestrial vegetation
- treeline
Biuppslag (personer, institutioner, konferenser, titlar ...)
- Peter, HannesUniv Innsbruck, Inst Ecol, Lake & Glacier Ecol Res Grp, Technikerstr 25, Innsbruck, Austria.;Ecole Polytech Fed Lausanne, Stream Biofilm & Ecosyst Res Lab, Lausanne, Switzerland. (författare)
- Catalán, Núria,1985-Uppsala universitet,Limnologi,Catalan Inst Water Res ICRA, Emili Grahit 101, Girona 17003, Spain(Swepub:uu)nurca641 (författare)
- Drewes, FabianUniv Innsbruck, Inst Ecol, Lake & Glacier Ecol Res Grp, Technikerstr 25, Innsbruck, Austria.;Angew Gewasserokol GesmbH, ARGE Limnol, Innsbruck, Austria. (författare)
- Sommaruga, RubenUniv Innsbruck, Inst Ecol, Lake & Glacier Ecol Res Grp, Technikerstr 25, Innsbruck, Austria. (författare)
- Perez, Maria TeresaUniv Innsbruck, Inst Ecol, Lake & Glacier Ecol Res Grp, Technikerstr 25, Innsbruck, Austria. (författare)
- Univ Innsbruck, Inst Ecol, Lake & Glacier Ecol Res Grp, Technikerstr 25, Innsbruck, Austria.Univ Innsbruck, Inst Ecol, Lake & Glacier Ecol Res Grp, Technikerstr 25, Innsbruck, Austria.;Ecole Polytech Fed Lausanne, Stream Biofilm & Ecosyst Res Lab, Lausanne, Switzerland. (creator_code:org_t)
Sammanhörande titlar
- Ingår i:Global Change Biology: Wiley23:6, s. 2331-23441354-10131365-2486
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