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  • Keuper, FridaUmeå universitet,Institutionen för ekologi, miljö och geovetenskap,BioEcoAgro Joint Research Unit, INRAE, Barenton-Bugny, France (author)

Carbon loss from northern circumpolar permafrost soils amplified by rhizosphere priming

  • Article/chapterEnglish2020

Publisher, publication year, extent ...

  • 2020-07-20
  • Springer Science and Business Media LLC,2020

Numbers

  • LIBRIS-ID:oai:gup.ub.gu.se/295302
  • https://gup.ub.gu.se/publication/295302URI
  • https://doi.org/10.1038/s41561-020-0607-0DOI
  • https://res.slu.se/id/publ/107118URI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-184405URI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-173916URI

Supplementary language notes

  • Language:English

Part of subdatabase

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • As global temperatures continue to rise, a key uncertainty of climate projections is the microbial decomposition of vast organic carbon stocks in thawing permafrost soils. Decomposition rates can accelerate up to fourfold in the presence of plant roots, and this mechanism-termed the rhizosphere priming effect-may be especially relevant to thawing permafrost soils as rising temperatures also stimulate plant productivity in the Arctic. However, priming is currently not explicitly included in any model projections of future carbon losses from the permafrost area. Here, we combine high-resolution spatial and depth-resolved datasets of key plant and permafrost properties with empirical relationships of priming effects from living plants on microbial respiration. We show that rhizosphere priming amplifies overall soil respiration in permafrost-affected ecosystems by similar to 12%, which translates to a priming-induced absolute loss of similar to 40 Pg soil carbon from the northern permafrost area by 2100. Our findings highlight the need to include fine-scale ecological interactions in order to accurately predict large-scale greenhouse gas emissions, and suggest even tighter restrictions on the estimated 200 Pg anthropogenic carbon emission budget to keep global warming below 1.5 degrees C.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Wild, BirgitStockholms universitet,Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences,Institutionen för miljövetenskap,University of Gothenburg, Sweden(Swepub:su)bwild (author)
  • Kummu, M. (author)
  • Beer, ChristianStockholms universitet,Institutionen för miljövetenskap,Universität Hamburg, Germany(Swepub:su)cbeer (author)
  • Blume-Werry, Gesche,1985-Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Experimental Plant Ecology, Institute of Botany and Landscape Ecology, Greifswald University, Greifswald, Germany(Swepub:umu)gebl0003 (author)
  • Fontaine, S. (author)
  • Gavazov, Konstantin,1983-Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Lausanne, Switzerland(Swepub:umu)koga0004 (author)
  • Gentsch, N. (author)
  • Guggenberger, G. (author)
  • Hugelius, GustafStockholms universitet,Institutionen för naturgeografi(Swepub:su)chuge (author)
  • Jalava, M. (author)
  • Koven, C. (author)
  • Krab, Eveline J.Umeå universitet,Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för mark och miljö,Department of Soil and Environment,Umeå University,Institutionen för ekologi, miljö och geovetenskap,Department of Soil and Environment, Swedish University of Agricultural Sciences, Uppsala, Sweden(Swepub:umu)evkr0017 (author)
  • Kuhry, PeterStockholms universitet,Institutionen för naturgeografi(Swepub:su)pkuhr (author)
  • Monteux, SylvainUmeå universitet,Institutionen för ekologi, miljö och geovetenskap(Swepub:umu)symo0005 (author)
  • Richter, A. (author)
  • Shahzad, T. (author)
  • Weedon, J. T. (author)
  • Dorrepaal, EllenUmeå universitet,Institutionen för ekologi, miljö och geovetenskap(Swepub:umu)eldo0004 (author)
  • Umeå universitetInstitutionen för ekologi, miljö och geovetenskap (creator_code:org_t)
  • Sveriges lantbruksuniversitet

Related titles

  • In:Nature Geoscience: Springer Science and Business Media LLC13, s. 560-5651752-08941752-0908

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