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Long-term warming of a subarctic heath decreases soil bacterial community growth but has no effects on its temperature adaptation
Responsible organisation
2011 (English)In: Agriculture, Ecosystems & Environment. Applied Soil Ecology, ISSN 0929-1393, E-ISSN 1873-0272, Vol. 47, no 3, p. 217-220Article in journal (Refereed) Published
Abstract [en]

We tested whether bacterial communities of subarctic heath soil are adapted to elevated temperature after experimental warming by open-top greenhouses for 7 or 17 years. The long-term warming by 1–2 °C significantly decreased bacterial community growth, by 28% and 73% after 7 and 17 years, respectively. The decrease was most likely due to decreased availability of labile substrate under warming. However, we found no evidence for temperature adaptation of soil bacterial communities. The optimum temperature for bacterial growth was on average 25 °C, and the apparent minimum temperature for growth between −7.3 and −6.1 °C, and both were unaffected by warming.

Research highlights

▶ Long-term warming of a subarctic heath decreased soil bacterial community growth. ▶ The decrease in bacterial growth was larger after 17 than after 7 years of warming. ▶ Warming did not affect temperature adaptation of the soil bacterial communities.

Place, publisher, year, edition, pages
2011. Vol. 47, no 3, p. 217-220
Keywords [en]
Arctic, Bacterial growth, Climate warming, Microbial community adaptation, Thymidine incorporation, Temperature response
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:polar:diva-8219DOI: 10.1016/j.apsoil.2010.12.011OAI: oai:DiVA.org:polar-8219DiVA, id: diva2:1297547
Available from: 2019-03-20 Created: 2019-03-20 Last updated: 2019-03-20

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Publisher's full texthttp://www.sciencedirect.com/science/article/pii/S0929139311000023
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Agriculture, Ecosystems & Environment. Applied Soil Ecology
Natural Sciences

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