Temperature dependence of CO2-enhanced primary production in the European Arctic Ocean
The Arctic Ocean is warming at two to three times the global rate1 and is perceived to be a bellwether for ocean acidification2,3. Increased CO2 concentrations are expected to have a fertilization effect on marine autotrophs4, and higher temperatures should lead to increased rates of planktonic prim...
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ftuniaarhuspubl:oai:pure.atira.dk:publications/60dabae0-29cb-4a5c-8d89-3c2decf12205 2023-05-15T14:22:38+02:00 Temperature dependence of CO2-enhanced primary production in the European Arctic Ocean Holding, Johnna M 2015 https://pure.au.dk/portal/da/publications/temperature-dependence-of-co2enhanced-primary-production-in-the-european-arctic-ocean(60dabae0-29cb-4a5c-8d89-3c2decf12205).html https://doi.org/10.1038/nclimate2768 eng eng info:eu-repo/semantics/restrictedAccess Holding , J M 2015 , ' Temperature dependence of CO2-enhanced primary production in the European Arctic Ocean ' , Nature Climate Change . https://doi.org/10.1038/nclimate2768 article 2015 ftuniaarhuspubl https://doi.org/10.1038/nclimate2768 2020-07-18T22:19:21Z The Arctic Ocean is warming at two to three times the global rate1 and is perceived to be a bellwether for ocean acidification2,3. Increased CO2 concentrations are expected to have a fertilization effect on marine autotrophs4, and higher temperatures should lead to increased rates of planktonic primary production5. Yet, simultaneous assessment of warming and increased CO2 on primary production in the Arctic has not been conducted. Here we test the expectation that CO2-enhanced gross primary production (GPP) may be temperature dependent, using data from several oceanographic cruises and experiments from both spring and summer in the European sector of the Arctic Ocean. Results confirm that CO2 enhances GPP (by a factor of up to ten) over a range of 145–2,099 μatm; however, the greatest effects are observed only at lower temperatures and are constrained by nutrient and light availability to the spring period. The temperature dependence of CO2-enhanced primary production has significant implications for metabolic balance in a warmer, CO2-enriched Arctic Ocean in the future. In particular, it indicates that a twofold increase in primary production during the spring is likely in the Arctic. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Aarhus University: Research Arctic Arctic Ocean Nature Climate Change 5 12 1079 1082 |
institution |
Open Polar |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
description |
The Arctic Ocean is warming at two to three times the global rate1 and is perceived to be a bellwether for ocean acidification2,3. Increased CO2 concentrations are expected to have a fertilization effect on marine autotrophs4, and higher temperatures should lead to increased rates of planktonic primary production5. Yet, simultaneous assessment of warming and increased CO2 on primary production in the Arctic has not been conducted. Here we test the expectation that CO2-enhanced gross primary production (GPP) may be temperature dependent, using data from several oceanographic cruises and experiments from both spring and summer in the European sector of the Arctic Ocean. Results confirm that CO2 enhances GPP (by a factor of up to ten) over a range of 145–2,099 μatm; however, the greatest effects are observed only at lower temperatures and are constrained by nutrient and light availability to the spring period. The temperature dependence of CO2-enhanced primary production has significant implications for metabolic balance in a warmer, CO2-enriched Arctic Ocean in the future. In particular, it indicates that a twofold increase in primary production during the spring is likely in the Arctic. |
format |
Article in Journal/Newspaper |
author |
Holding, Johnna M |
spellingShingle |
Holding, Johnna M Temperature dependence of CO2-enhanced primary production in the European Arctic Ocean |
author_facet |
Holding, Johnna M |
author_sort |
Holding, Johnna M |
title |
Temperature dependence of CO2-enhanced primary production in the European Arctic Ocean |
title_short |
Temperature dependence of CO2-enhanced primary production in the European Arctic Ocean |
title_full |
Temperature dependence of CO2-enhanced primary production in the European Arctic Ocean |
title_fullStr |
Temperature dependence of CO2-enhanced primary production in the European Arctic Ocean |
title_full_unstemmed |
Temperature dependence of CO2-enhanced primary production in the European Arctic Ocean |
title_sort |
temperature dependence of co2-enhanced primary production in the european arctic ocean |
publishDate |
2015 |
url |
https://pure.au.dk/portal/da/publications/temperature-dependence-of-co2enhanced-primary-production-in-the-european-arctic-ocean(60dabae0-29cb-4a5c-8d89-3c2decf12205).html https://doi.org/10.1038/nclimate2768 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Arctic Ocean |
op_source |
Holding , J M 2015 , ' Temperature dependence of CO2-enhanced primary production in the European Arctic Ocean ' , Nature Climate Change . https://doi.org/10.1038/nclimate2768 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1038/nclimate2768 |
container_title |
Nature Climate Change |
container_volume |
5 |
container_issue |
12 |
container_start_page |
1079 |
op_container_end_page |
1082 |
_version_ |
1766295183476916224 |