Tundra cryogenic land surface processes and CO2–C balance in sub-Arctic alpine environment withstand winter and spring warming
Cryogenic land surface processes (CLSPs), such as cryoturbation, are currently active in landscapes covering 25% of our planet where they dictate key functions, such as carbon (C) cycling, and maintain patterned landscape features. While CLSPs are expected to diminish in the near future due to milde...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | Environmental Research: Climate |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2752-5295/acc08b |
| _version_ | 1827360433305026560 |
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| author | Maria Väisänen Jonatan Klaminder Henni Ylänne Laurenz Teuber Ellen Dorrepaal Eveline J Krab |
| author_facet | Maria Väisänen Jonatan Klaminder Henni Ylänne Laurenz Teuber Ellen Dorrepaal Eveline J Krab |
| author_sort | Maria Väisänen |
| collection | DOAJ |
| description | Cryogenic land surface processes (CLSPs), such as cryoturbation, are currently active in landscapes covering 25% of our planet where they dictate key functions, such as carbon (C) cycling, and maintain patterned landscape features. While CLSPs are expected to diminish in the near future due to milder winters especially in the southern parts of the Arctic, the shifts in C cycling in these landscapes may be more complex, since climate change can affect C cycling directly but also indirectly via CLSPs. Here, we study the effects of changing winter and spring climate on CLSPs and C cycling in non-sorted circles consisting of barren frost boils and their vegetated rims. We do this by measuring cryoturbation and ecosystem CO _2 fluxes repeatedly in alpine subarctic tundra where temperatures during naturally snow covered period have been experimentally increased with snow-trapping fences and temperatures during winter and spring period after snowmelt have been increased with insulating fleeces. Opposite to our hypothesis, warming treatments did not decrease cryoturbation. However, winter warming via deeper snow increased ecosystem C sink during summer by decreasing ecosystem CO _2 release in the frost boils and by counterbalancing the negative effects of cryoturbation on plant CO _2 uptake in the vegetated rims. Our results suggest that short-term changes in winter and spring climate may not alter cryoturbation and jeopardize the tundra C sink. |
| first_indexed | 2024-03-08T06:47:09Z |
| format | Article |
| id | doaj.art-6d25ae0621934042b8e5eb3952d88642 |
| institution | Directory Open Access Journal |
| issn | 2752-5295 |
| language | English |
| last_indexed | 2024-03-08T06:47:09Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research: Climate |
| spelling | doaj.art-6d25ae0621934042b8e5eb3952d886422024-02-03T07:36:59ZengIOP PublishingEnvironmental Research: Climate2752-52952023-01-012202100110.1088/2752-5295/acc08bTundra cryogenic land surface processes and CO2–C balance in sub-Arctic alpine environment withstand winter and spring warmingMaria Väisänen0https://orcid.org/0000-0001-9055-8443Jonatan Klaminder1Henni Ylänne2Laurenz Teuber3Ellen Dorrepaal4Eveline J Krab5Climate Impacts Research Center, Department of Ecology and Environmental Sciences, Umeå University , SE-981 07 Abisko, Sweden; Ecology and Genetics Research Unit, University of Oulu , PO Box 3000, FI-90 100 Oulu, Finland; Arctic Center, University of Lapland , PO Box 122, FI-96 101 Rovaniemi, FinlandClimate Impacts Research Center, Department of Ecology and Environmental Sciences, Umeå University , SE-981 07 Abisko, SwedenCentre for Environmental and Climate Research, Lund University , PO Box 118, SE-221 00 Lund, SwedenClimate Impacts Research Center, Department of Ecology and Environmental Sciences, Umeå University , SE-981 07 Abisko, SwedenClimate Impacts Research Center, Department of Ecology and Environmental Sciences, Umeå University , SE-981 07 Abisko, SwedenClimate Impacts Research Center, Department of Ecology and Environmental Sciences, Umeå University , SE-981 07 Abisko, Sweden; Department of Soil and Environment, Swedish University of Agricultural Sciences , Lennart Hjelms väg 9, SE-750 07 Uppsala, SwedenCryogenic land surface processes (CLSPs), such as cryoturbation, are currently active in landscapes covering 25% of our planet where they dictate key functions, such as carbon (C) cycling, and maintain patterned landscape features. While CLSPs are expected to diminish in the near future due to milder winters especially in the southern parts of the Arctic, the shifts in C cycling in these landscapes may be more complex, since climate change can affect C cycling directly but also indirectly via CLSPs. Here, we study the effects of changing winter and spring climate on CLSPs and C cycling in non-sorted circles consisting of barren frost boils and their vegetated rims. We do this by measuring cryoturbation and ecosystem CO _2 fluxes repeatedly in alpine subarctic tundra where temperatures during naturally snow covered period have been experimentally increased with snow-trapping fences and temperatures during winter and spring period after snowmelt have been increased with insulating fleeces. Opposite to our hypothesis, warming treatments did not decrease cryoturbation. However, winter warming via deeper snow increased ecosystem C sink during summer by decreasing ecosystem CO _2 release in the frost boils and by counterbalancing the negative effects of cryoturbation on plant CO _2 uptake in the vegetated rims. Our results suggest that short-term changes in winter and spring climate may not alter cryoturbation and jeopardize the tundra C sink.https://doi.org/10.1088/2752-5295/acc08bnon-sorted circledifferential heavegreenhouse gassnow fencegreennesslight-response |
| spellingShingle | Maria Väisänen Jonatan Klaminder Henni Ylänne Laurenz Teuber Ellen Dorrepaal Eveline J Krab Tundra cryogenic land surface processes and CO2–C balance in sub-Arctic alpine environment withstand winter and spring warming Environmental Research: Climate non-sorted circle differential heave greenhouse gas snow fence greenness light-response |
| title | Tundra cryogenic land surface processes and CO2–C balance in sub-Arctic alpine environment withstand winter and spring warming |
| title_full | Tundra cryogenic land surface processes and CO2–C balance in sub-Arctic alpine environment withstand winter and spring warming |
| title_fullStr | Tundra cryogenic land surface processes and CO2–C balance in sub-Arctic alpine environment withstand winter and spring warming |
| title_full_unstemmed | Tundra cryogenic land surface processes and CO2–C balance in sub-Arctic alpine environment withstand winter and spring warming |
| title_short | Tundra cryogenic land surface processes and CO2–C balance in sub-Arctic alpine environment withstand winter and spring warming |
| title_sort | tundra cryogenic land surface processes and co2 c balance in sub arctic alpine environment withstand winter and spring warming |
| topic | non-sorted circle differential heave greenhouse gas snow fence greenness light-response |
| url | https://doi.org/10.1088/2752-5295/acc08b |
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