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Carbon loss from northern circumpolar permafrost soils amplified by rhizosphere priming

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autorschaft

  • Frida Keuper
  • Birgit Wild
  • Matti Kummu
  • Christian Beer
  • Norman Gentsch
  • Georg Guggenberger

Organisationseinheiten

Externe Organisationen

  • Universität Umeå
  • Stockholm University
  • Göteborgs Universitet
  • Aalto University
  • Universität Hamburg
  • Universität Greifswald
  • Swiss Federal Institute for Forest, Snow and Landscape Research (WSL)
  • Lawrence Berkeley National Laboratory
  • Swedish University of Agricultural Sciences
  • Universität Wien
  • International Institute for Applied Systems Analysis, Laxenburg
  • Government College University Faisalabad
  • Vrije Universiteit Amsterdam
  • Institut national de recherche pour l’agriculture, l’alimentation et l’environnement (INRAE)
  • Russian Academy of Sciences (RAS)

Details

OriginalspracheEnglisch
Seiten (von - bis)560-565
Seitenumfang6
FachzeitschriftNature geoscience
Jahrgang13
Ausgabenummer8
Frühes Online-Datum20 Juli 2020
PublikationsstatusVeröffentlicht - Aug. 2020

Abstract

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 ~12%, which translates to a priming-induced absolute loss of ~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 °C.

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Carbon loss from northern circumpolar permafrost soils amplified by rhizosphere priming. / Keuper, Frida; Wild, Birgit; Kummu, Matti et al.
in: Nature geoscience, Jahrgang 13, Nr. 8, 08.2020, S. 560-565.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Keuper, F, Wild, B, Kummu, M, Beer, C, Blume-Werry, G, Fontaine, S, Gavazov, K, Gentsch, N, Guggenberger, G, Hugelius, G, Jalava, M, Koven, C, Krab, EJ, Kuhry, P, Monteux, S, Richter, A, Shahzad, T, Weedon, JT & Dorrepaal, E 2020, 'Carbon loss from northern circumpolar permafrost soils amplified by rhizosphere priming', Nature geoscience, Jg. 13, Nr. 8, S. 560-565. https://doi.org/10.1038/s41561-020-0607-0
Keuper, F., Wild, B., Kummu, M., Beer, C., Blume-Werry, G., Fontaine, S., Gavazov, K., Gentsch, N., Guggenberger, G., Hugelius, G., Jalava, M., Koven, C., Krab, E. J., Kuhry, P., Monteux, S., Richter, A., Shahzad, T., Weedon, J. T., & Dorrepaal, E. (2020). Carbon loss from northern circumpolar permafrost soils amplified by rhizosphere priming. Nature geoscience, 13(8), 560-565. https://doi.org/10.1038/s41561-020-0607-0
Keuper F, Wild B, Kummu M, Beer C, Blume-Werry G, Fontaine S et al. Carbon loss from northern circumpolar permafrost soils amplified by rhizosphere priming. Nature geoscience. 2020 Aug;13(8):560-565. Epub 2020 Jul 20. doi: 10.1038/s41561-020-0607-0
Keuper, Frida ; Wild, Birgit ; Kummu, Matti et al. / Carbon loss from northern circumpolar permafrost soils amplified by rhizosphere priming. in: Nature geoscience. 2020 ; Jahrgang 13, Nr. 8. S. 560-565.
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title = "Carbon loss from northern circumpolar permafrost soils amplified by rhizosphere priming",
abstract = "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 ~12%, which translates to a priming-induced absolute loss of ~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 °C.",
author = "Frida Keuper and Birgit Wild and Matti Kummu and Christian Beer and Gesche Blume-Werry and S{\'e}bastien Fontaine and Konstantin Gavazov and Norman Gentsch and Georg Guggenberger and Gustaf Hugelius and Mika Jalava and Charles Koven and Krab, {Eveline J.} and Peter Kuhry and Sylvain Monteux and Andreas Richter and Tanvir Shahzad and Weedon, {James T.} and Ellen Dorrepaal",
note = "Funding information: We thank P. Thornton, F. Dijkstra, Y. Carrillo and R. E. Hewitt for providing additional information on published data. Figure 1a–c is courtesy of R. Miedema (IN Produktie, Amsterdam). This study was supported by funding from: the Swedish Research Council (VR) (grant number 621-2011-5444), Formas (grant number 214-2011-788) and the Knut and Alice Wallenberg Foundation (grant number KAW 2012.0152) (all awarded to E.D.); Academy of Finland-funded projects SCART (grant number 267463) and WASCO (grant number 305471), Emil Aaltonen Foundation-funded project {\textquoteleft}eat-less-water{\textquoteright}, the European Research Council under the European Union{\textquoteright}s Horizon 2020 Research and Innovation Programme (grant agreement number 819202), and Maa-ja vesitekniikan tuki ry (all awarded to M.K.); the JPI Climate Project COUP-Austria (BMWFW-6.020/0008) (awarded to A.R.); two projects funded by the Swedish Research Council, the EU JPI Climate COUP project (E0689701) and the Project INCA (E0641701)–Marie Sklodowska-Curie Actions cofund (600398) (awarded to G.H.); the Deutsche Forschungsgemeinschaft (BE 6485/1-1) (to C.B.); and the US DOE BER RGMA programme through the RUBISCO SFA and ECRP projects (to C.K.).",
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Download

TY - JOUR

T1 - Carbon loss from northern circumpolar permafrost soils amplified by rhizosphere priming

AU - Keuper, Frida

AU - Wild, Birgit

AU - Kummu, Matti

AU - Beer, Christian

AU - Blume-Werry, Gesche

AU - Fontaine, Sébastien

AU - Gavazov, Konstantin

AU - Gentsch, Norman

AU - Guggenberger, Georg

AU - Hugelius, Gustaf

AU - Jalava, Mika

AU - Koven, Charles

AU - Krab, Eveline J.

AU - Kuhry, Peter

AU - Monteux, Sylvain

AU - Richter, Andreas

AU - Shahzad, Tanvir

AU - Weedon, James T.

AU - Dorrepaal, Ellen

N1 - Funding information: We thank P. Thornton, F. Dijkstra, Y. Carrillo and R. E. Hewitt for providing additional information on published data. Figure 1a–c is courtesy of R. Miedema (IN Produktie, Amsterdam). This study was supported by funding from: the Swedish Research Council (VR) (grant number 621-2011-5444), Formas (grant number 214-2011-788) and the Knut and Alice Wallenberg Foundation (grant number KAW 2012.0152) (all awarded to E.D.); Academy of Finland-funded projects SCART (grant number 267463) and WASCO (grant number 305471), Emil Aaltonen Foundation-funded project ‘eat-less-water’, the European Research Council under the European Union’s Horizon 2020 Research and Innovation Programme (grant agreement number 819202), and Maa-ja vesitekniikan tuki ry (all awarded to M.K.); the JPI Climate Project COUP-Austria (BMWFW-6.020/0008) (awarded to A.R.); two projects funded by the Swedish Research Council, the EU JPI Climate COUP project (E0689701) and the Project INCA (E0641701)–Marie Sklodowska-Curie Actions cofund (600398) (awarded to G.H.); the Deutsche Forschungsgemeinschaft (BE 6485/1-1) (to C.B.); and the US DOE BER RGMA programme through the RUBISCO SFA and ECRP projects (to C.K.).

PY - 2020/8

Y1 - 2020/8

N2 - 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 ~12%, which translates to a priming-induced absolute loss of ~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 °C.

AB - 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 ~12%, which translates to a priming-induced absolute loss of ~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 °C.

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U2 - 10.1038/s41561-020-0607-0

DO - 10.1038/s41561-020-0607-0

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