Predicting ecosystem carbon balance in a warming Arctic: the importance of long-term thermal acclimation potential and inhibitory effects of light on respiration
The carbon balance of Arctic ecosystems is particularly sensitive to global environmental change. Leaf respiration (R), a temperature-dependent key process in determining the carbon balance, is not well understood in Arctic plants. The potential for plants to acclimate to warmer conditions could str...
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Online Access: | https://doi.org/10.1111/gcb.12549 |
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ftunivscoast:usc:12367 2023-05-15T14:38:44+02:00 Predicting ecosystem carbon balance in a warming Arctic: the importance of long-term thermal acclimation potential and inhibitory effects of light on respiration McLaughlin, B C Xu, C Y Rastetter, Edward B Griffin, K L 2014 https://doi.org/10.1111/gcb.12549 eng eng Wiley-Blackwell Publishing Ltd. usc:12367 URN:ISSN: 1354-1013 Copyright © 2014 Wiley-Blackwell Publishing Ltd. This is the peer reviewed version of the following article: McLaughlin, B. C., Xu, C.-Y., Rastetter, E. B. and Griffin, K. L. (2014), Predicting ecosystem carbon balance in a warming Arctic: the importance of long-term thermal acclimation potential and inhibitory effects of light on respiration. Glob Change Biol, 20: 1901–1912, which has been published in final form at doi:10.1111/gcb.12549. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. FoR 06 (Biological Sciences) FoR 05 (Environmental Sciences) acclimation Arctic betula nana climate change eriophorum vaginatum Kok effect tundra Journal Article 2014 ftunivscoast https://doi.org/10.1111/gcb.12549 2018-07-29T23:58:19Z The carbon balance of Arctic ecosystems is particularly sensitive to global environmental change. Leaf respiration (R), a temperature-dependent key process in determining the carbon balance, is not well understood in Arctic plants. The potential for plants to acclimate to warmer conditions could strongly impact future global carbon balance. Two key unanswered questions are (1) whether short-term temperature responses can predict long-term respiratory responses to growth in elevated temperatures and (2) to what extent the constant daylight conditions of the Arctic growing season inhibit leaf respiration. In two dominant Arctic species Eriophorum vaginatum (tussock grass) and Betula nana (woody shrub), we assessed the extent of respiratory inhibition in the light (RL/RD), respiratory response to short-term temperature change, and respiratory acclimation to long-term warming treatments. We found that R of both species is strongly inhibited by light (averaging 35% across all measurement temperatures). In E. vaginatum both RL and RD acclimated to the long-term warming treatment, reducing the magnitude of respiratory response relative to the short-term response to temperature increase. In B. nana, both RL and RD responded to short-term temperature increase but showed no acclimation to the long-term warming. The ability to predict plant respiratory response to global warming with short-term temperature responses will depend on species-specific acclimation potential and the differential response of RL and RD to temperature. With projected woody shrub encroachment in Arctic tundra and continued warming, changing species dominance between these two functional groups, may impact ecosystem respiratory response and carbon balance. Article in Journal/Newspaper Arctic Betula nana Climate change Eriophorum Global warming Tundra University of the Sunshine Coast, Queensland, Australia: COAST Research Database Arctic Global Change Biology 20 6 1901 1912 |
institution |
Open Polar |
collection |
University of the Sunshine Coast, Queensland, Australia: COAST Research Database |
op_collection_id |
ftunivscoast |
language |
English |
topic |
FoR 06 (Biological Sciences) FoR 05 (Environmental Sciences) acclimation Arctic betula nana climate change eriophorum vaginatum Kok effect tundra |
spellingShingle |
FoR 06 (Biological Sciences) FoR 05 (Environmental Sciences) acclimation Arctic betula nana climate change eriophorum vaginatum Kok effect tundra McLaughlin, B C Xu, C Y Rastetter, Edward B Griffin, K L Predicting ecosystem carbon balance in a warming Arctic: the importance of long-term thermal acclimation potential and inhibitory effects of light on respiration |
topic_facet |
FoR 06 (Biological Sciences) FoR 05 (Environmental Sciences) acclimation Arctic betula nana climate change eriophorum vaginatum Kok effect tundra |
description |
The carbon balance of Arctic ecosystems is particularly sensitive to global environmental change. Leaf respiration (R), a temperature-dependent key process in determining the carbon balance, is not well understood in Arctic plants. The potential for plants to acclimate to warmer conditions could strongly impact future global carbon balance. Two key unanswered questions are (1) whether short-term temperature responses can predict long-term respiratory responses to growth in elevated temperatures and (2) to what extent the constant daylight conditions of the Arctic growing season inhibit leaf respiration. In two dominant Arctic species Eriophorum vaginatum (tussock grass) and Betula nana (woody shrub), we assessed the extent of respiratory inhibition in the light (RL/RD), respiratory response to short-term temperature change, and respiratory acclimation to long-term warming treatments. We found that R of both species is strongly inhibited by light (averaging 35% across all measurement temperatures). In E. vaginatum both RL and RD acclimated to the long-term warming treatment, reducing the magnitude of respiratory response relative to the short-term response to temperature increase. In B. nana, both RL and RD responded to short-term temperature increase but showed no acclimation to the long-term warming. The ability to predict plant respiratory response to global warming with short-term temperature responses will depend on species-specific acclimation potential and the differential response of RL and RD to temperature. With projected woody shrub encroachment in Arctic tundra and continued warming, changing species dominance between these two functional groups, may impact ecosystem respiratory response and carbon balance. |
format |
Article in Journal/Newspaper |
author |
McLaughlin, B C Xu, C Y Rastetter, Edward B Griffin, K L |
author_facet |
McLaughlin, B C Xu, C Y Rastetter, Edward B Griffin, K L |
author_sort |
McLaughlin, B C |
title |
Predicting ecosystem carbon balance in a warming Arctic: the importance of long-term thermal acclimation potential and inhibitory effects of light on respiration |
title_short |
Predicting ecosystem carbon balance in a warming Arctic: the importance of long-term thermal acclimation potential and inhibitory effects of light on respiration |
title_full |
Predicting ecosystem carbon balance in a warming Arctic: the importance of long-term thermal acclimation potential and inhibitory effects of light on respiration |
title_fullStr |
Predicting ecosystem carbon balance in a warming Arctic: the importance of long-term thermal acclimation potential and inhibitory effects of light on respiration |
title_full_unstemmed |
Predicting ecosystem carbon balance in a warming Arctic: the importance of long-term thermal acclimation potential and inhibitory effects of light on respiration |
title_sort |
predicting ecosystem carbon balance in a warming arctic: the importance of long-term thermal acclimation potential and inhibitory effects of light on respiration |
publisher |
Wiley-Blackwell Publishing Ltd. |
publishDate |
2014 |
url |
https://doi.org/10.1111/gcb.12549 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Betula nana Climate change Eriophorum Global warming Tundra |
genre_facet |
Arctic Betula nana Climate change Eriophorum Global warming Tundra |
op_relation |
usc:12367 URN:ISSN: 1354-1013 |
op_rights |
Copyright © 2014 Wiley-Blackwell Publishing Ltd. This is the peer reviewed version of the following article: McLaughlin, B. C., Xu, C.-Y., Rastetter, E. B. and Griffin, K. L. (2014), Predicting ecosystem carbon balance in a warming Arctic: the importance of long-term thermal acclimation potential and inhibitory effects of light on respiration. Glob Change Biol, 20: 1901–1912, which has been published in final form at doi:10.1111/gcb.12549. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
op_doi |
https://doi.org/10.1111/gcb.12549 |
container_title |
Global Change Biology |
container_volume |
20 |
container_issue |
6 |
container_start_page |
1901 |
op_container_end_page |
1912 |
_version_ |
1766310774658039808 |