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Temperature thresholds of ecosystem respiration at a global scale

Johnston, Alice S.A. ; Meade, Andrew ; Ardö, Jonas LU orcid ; Arriga, Nicola ; Black, Andy ; Blanken, Peter D. ; Bonal, Damien ; Brümmer, Christian ; Cescatti, Alessandro and Dušek, Jiří , et al. (2021) In Nature Ecology and Evolution 5(4). p.487-494
Abstract

Ecosystem respiration is a major component of the global terrestrial carbon cycle and is strongly influenced by temperature. The global extent of the temperature–ecosystem respiration relationship, however, has not been fully explored. Here, we test linear and threshold models of ecosystem respiration across 210 globally distributed eddy covariance sites over an extensive temperature range. We find thresholds to the global temperature–ecosystem respiration relationship at high and low air temperatures and mid soil temperatures, which represent transitions in the temperature dependence and sensitivity of ecosystem respiration. Annual ecosystem respiration rates show a markedly reduced temperature dependence and sensitivity compared to... (More)

Ecosystem respiration is a major component of the global terrestrial carbon cycle and is strongly influenced by temperature. The global extent of the temperature–ecosystem respiration relationship, however, has not been fully explored. Here, we test linear and threshold models of ecosystem respiration across 210 globally distributed eddy covariance sites over an extensive temperature range. We find thresholds to the global temperature–ecosystem respiration relationship at high and low air temperatures and mid soil temperatures, which represent transitions in the temperature dependence and sensitivity of ecosystem respiration. Annual ecosystem respiration rates show a markedly reduced temperature dependence and sensitivity compared to half-hourly rates, and a single mid-temperature threshold for both air and soil temperature. Our study indicates a distinction in the influence of environmental factors, including temperature, on ecosystem respiration between latitudinal and climate gradients at short (half-hourly) and long (annual) timescales. Such climatological differences in the temperature sensitivity of ecosystem respiration have important consequences for the terrestrial net carbon sink under ongoing climate change.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nature Ecology and Evolution
volume
5
issue
4
pages
487 - 494
publisher
Nature Publishing Group
external identifiers
  • pmid:33619357
  • scopus:85101236855
ISSN
2397-334X
DOI
10.1038/s41559-021-01398-z
language
English
LU publication?
yes
id
4e8da5e6-1bc3-4ade-ac4b-799e956ab2e6
date added to LUP
2021-03-11 11:16:26
date last changed
2024-04-18 04:14:22
@article{4e8da5e6-1bc3-4ade-ac4b-799e956ab2e6,
  abstract     = {{<p>Ecosystem respiration is a major component of the global terrestrial carbon cycle and is strongly influenced by temperature. The global extent of the temperature–ecosystem respiration relationship, however, has not been fully explored. Here, we test linear and threshold models of ecosystem respiration across 210 globally distributed eddy covariance sites over an extensive temperature range. We find thresholds to the global temperature–ecosystem respiration relationship at high and low air temperatures and mid soil temperatures, which represent transitions in the temperature dependence and sensitivity of ecosystem respiration. Annual ecosystem respiration rates show a markedly reduced temperature dependence and sensitivity compared to half-hourly rates, and a single mid-temperature threshold for both air and soil temperature. Our study indicates a distinction in the influence of environmental factors, including temperature, on ecosystem respiration between latitudinal and climate gradients at short (half-hourly) and long (annual) timescales. Such climatological differences in the temperature sensitivity of ecosystem respiration have important consequences for the terrestrial net carbon sink under ongoing climate change.</p>}},
  author       = {{Johnston, Alice S.A. and Meade, Andrew and Ardö, Jonas and Arriga, Nicola and Black, Andy and Blanken, Peter D. and Bonal, Damien and Brümmer, Christian and Cescatti, Alessandro and Dušek, Jiří and Graf, Alexander and Gioli, Beniamino and Goded, Ignacio and Gough, Christopher M. and Ikawa, Hiroki and Jassal, Rachhpal and Kobayashi, Hideki and Magliulo, Vincenzo and Manca, Giovanni and Montagnani, Leonardo and Moyano, Fernando E. and Olesen, Jørgen E. and Sachs, Torsten and Shao, Changliang and Tagesson, Torbern and Wohlfahrt, Georg and Wolf, Sebastian and Woodgate, William and Varlagin, Andrej and Venditti, Chris}},
  issn         = {{2397-334X}},
  language     = {{eng}},
  month        = {{02}},
  number       = {{4}},
  pages        = {{487--494}},
  publisher    = {{Nature Publishing Group}},
  series       = {{Nature Ecology and Evolution}},
  title        = {{Temperature thresholds of ecosystem respiration at a global scale}},
  url          = {{http://dx.doi.org/10.1038/s41559-021-01398-z}},
  doi          = {{10.1038/s41559-021-01398-z}},
  volume       = {{5}},
  year         = {{2021}},
}