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Comparing soil micr...
Comparing soil microbial responses to drying-rewetting and freezing-thawing events
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- Li, Jin-Tao (författare)
- Lund University,Lunds universitet,Mikrobiologisk ekologi,Forskargrupper vid Lunds universitet,Mikrobiell biogeokemi i Lund,Microbial Ecology,Lund University Research Groups,Microbial Biogeochemistry in Lund,Fudan University
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- Xu, Huimin (författare)
- Lund University,Lunds universitet,Mikrobiologisk ekologi,Forskargrupper vid Lunds universitet,Mikrobiell biogeokemi i Lund,Microbial Ecology,Lund University Research Groups,Microbial Biogeochemistry in Lund,Hohai University
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- Hicks, Lettice C. (författare)
- Lund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Mikrobiologisk ekologi,Forskargrupper vid Lunds universitet,Mikrobiell biogeokemi i Lund,Department of Biology,Faculty of Science,Centre for Environmental and Climate Science (CEC),Microbial Ecology,Lund University Research Groups,Microbial Biogeochemistry in Lund
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- Brangarí, Albert C. (författare)
- Lund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,MERGE: ModElling the Regional and Global Earth system,Mikrobiologisk ekologi,Forskargrupper vid Lunds universitet,Mikrobiell biogeokemi i Lund,Centre for Environmental and Climate Science (CEC),Faculty of Science,Microbial Ecology,Lund University Research Groups,Microbial Biogeochemistry in Lund
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- Rousk, Johannes (författare)
- Lund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Mikrobiologisk ekologi,Forskargrupper vid Lunds universitet,Mikrobiell biogeokemi i Lund,Department of Biology,Faculty of Science,Centre for Environmental and Climate Science (CEC),Microbial Ecology,Lund University Research Groups,Microbial Biogeochemistry in Lund
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(creator_code:org_t)
- Elsevier BV, 2023
- 2023
- Engelska.
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Ingår i: Soil Biology and Biochemistry. - : Elsevier BV. - 0038-0717. ; 178
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Climate change is expected to alter the frequency and intensity of soil drying-rewetting (D/RW) and freezing-thawing (F/TW) events, with consequences for the activities of microorganisms. Although both D/RW and F/TW events cause respiration pulses from soil to the atmosphere, it remains unknown whether the underlying microbial control is similar. Recent work has revealed that soil microbial responses to D/RW vary between two extremes: (Type 1) a resilient response, with a fast recovery of growth rates associated with a brief respiration pulse, or (Type 2) a sensitive response, where growth rates recover only after a lag period of no apparent growth associated with a prolonged respiration pulse. However, it remains unknown if these different microbial perturbation responses also occur after F/TW. Here, we directly compared microbial growth, respiration, and carbon-use efficiency (CUE) in response to D/RW and F/TW events. To do this, we selected two forest soils characterized by either sensitive or resilient responses to D/RW. We could confirm that D/RW induced either sensitive or resilient bacterial growth and respiration responses, but also that these distinct responses were found after F/TW. Additionally, F/TW resulted in shorter lag periods before the increase of bacterial growth, smaller respiration pulses, and lower levels of cumulative respiration, bacterial growth and fungal growth after the perturbation than did D/RW. These findings are consistent with a F/TW event imposing a similar stress on soil microorganisms to a D/RW event, but with lower severity. However, there was no significant difference in the microbial CUE between D/RW and F/TW, indicating that microorganisms maintain the stability of their C allocation in response to both types of perturbation. Altogether, our findings suggest that microbial communities are exposed to similar environmental pressures during D/RW and F/TW, implying that strategies to cope with drought can also provide protection to winter frost, and vice versa.
Ämnesord
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Markvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Soil Science (hsv//eng)
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Nyckelord
- Drought
- Drying-rewetting
- Extreme weather
- Freezing-thawing
- Ice melting
- Microbial growth efficiency
- Permafrost
- Precipitation
- Rain event
- Wet-up
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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