Decadal soil warming decreased vascular plant above and belowground production in a subarctic grassland by inducing nitrogen limitationUmeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
CREAF, Cerdanyola del Vallès, Catalonia, Barcelona, Spain; CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Catalonia, Barcelona, Spain; Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.
Centre for Microbiology and Environmental Systems Science, University of Vienna, Djerassiplatz 1, Vienna, Austria.
Agricultural University of Iceland, Hvanneyri, Borgarnes, Iceland.
Department of Ecology, University of Innsbruck, Innsbruck, Austria.
PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Universiteitsplein 1, Wilrijk, Belgium.
PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Universiteitsplein 1, Wilrijk, Belgium.
Centre for Microbiology and Environmental Systems Science, University of Vienna, Djerassiplatz 1, Vienna, Austria.
CREAF, Cerdanyola del Vallès, Catalonia, Barcelona, Spain; CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Catalonia, Barcelona, Spain.
CREAF, Cerdanyola del Vallès, Catalonia, Barcelona, Spain; CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Catalonia, Barcelona, Spain.
Department of Ecology, University of Innsbruck, Innsbruck, Austria.
PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Universiteitsplein 1, Wilrijk, Belgium.
PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Universiteitsplein 1, Wilrijk, Belgium.
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2023 (English)In: New Phytologist, ISSN 0028-646X, E-ISSN 1469-8137, Vol. 240, no 2, p. 565-576Article in journal (Refereed) Published
Abstract [en]
- Below and aboveground vegetation dynamics are crucial in understanding how climate warming may affect terrestrial ecosystem carbon cycling. In contrast to aboveground biomass, the response of belowground biomass to long-term warming has been poorly studied.
- Here, we characterized the impacts of decadal geothermal warming at two levels (on average +3.3°C and +7.9°C) on below and aboveground plant biomass stocks and production in a subarctic grassland.
- Soil warming did not change standing root biomass and even decreased fine root production and reduced aboveground biomass and production. Decadal soil warming also did not significantly alter the root–shoot ratio. The linear stepwise regression model suggested that following 10 yr of soil warming, temperature was no longer the direct driver of these responses, but losses of soil N were. Soil N losses, due to warming-induced decreases in organic matter and water retention capacity, were identified as key driver of the decreased above and belowground production. The reduction in fine root production was accompanied by thinner roots with increased specific root area.
- These results indicate that after a decade of soil warming, plant productivity in the studied subarctic grassland was affected by soil warming mainly by the reduction in soil N.
Place, publisher, year, edition, pages
John Wiley & Sons, 2023. Vol. 240, no 2, p. 565-576
Keywords [en]
biomass distribution, grasses, nitrogen limitation, temperature increase, vascular plants
National Category
Soil Science Climate Science
Identifiers
URN: urn:nbn:se:umu:diva-213037DOI: 10.1111/nph.19177ISI: 001043561400001PubMedID: 37545200Scopus ID: 2-s2.0-85167345319OAI: oai:DiVA.org:umu-213037DiVA, id: diva2:1789737
2023-08-212023-08-212025-02-01Bibliographically approved