Järveoja, Järvi and Nilsson, Mats and Crill, Patrick M. and Peichl, Matthias
(2020).
Bimodal diel pattern in peatland ecosystem respiration rebuts uniform temperature response.
Nature Communications. 11
, 4255
[Journal article]
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Abstract
Accurate projections of climate change impacts on the vast carbon stores of northern peatlands require detailed knowledge of ecosystem respiration (ER) and its heterotrophic (Rh) and autotrophic (Ra) components. Currently, however, standard flux measurement techniques, i.e. eddy covariance and manual chambers, generate empirical ER data during only night- or daytime, respectively, which are extrapolated to the daily scale based on the paradigm that assumes a uniform diel temperature response. Here, using continuous autochamber measurements, we demonstrate a distinct bimodal pattern in diel peatland ER which contrasts the unimodal pattern inherent to the classical assumption. This feature results from divergent temperature dependencies of day- and nighttime ER due to varying contributions from Rh and Ra. We further find that disregarding these bimodal dynamics causes significant bias in ER estimates across multiple temporal scales. This calls for improved process-based understanding of ER to advance our ability to simulate peatland carbon cycle-climate feedbacks.
Authors/Creators: | Järveoja, Järvi and Nilsson, Mats and Crill, Patrick M. and Peichl, Matthias | ||||||
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Title: | Bimodal diel pattern in peatland ecosystem respiration rebuts uniform temperature response | ||||||
Series Name/Journal: | Nature Communications | ||||||
Year of publishing : | 2020 | ||||||
Volume: | 11 | ||||||
Article number: | 4255 | ||||||
Number of Pages: | 9 | ||||||
ISSN: | 2041-1723 | ||||||
Language: | English | ||||||
Publication Type: | Journal article | ||||||
Article category: | Scientific peer reviewed | ||||||
Version: | Published version | ||||||
Copyright: | Creative Commons: Attribution 4.0 | ||||||
Full Text Status: | Public | ||||||
Subjects: | (A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology | ||||||
URN:NBN: | urn:nbn:se:slu:epsilon-p-107884 | ||||||
Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-107884 | ||||||
Additional ID: |
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ID Code: | 17611 | ||||||
Faculty: | S - Faculty of Forest Sciences | ||||||
Department: | (S) > Dept. of Forest Ecology and Management | ||||||
Deposited By: | SLUpub Connector | ||||||
Deposited On: | 28 Sep 2020 09:45 | ||||||
Metadata Last Modified: | 15 Jan 2021 19:23 |
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