Direct measurements of the light dependence of gross photosynthesis and oxygen consumption in the ocean
Abstract We measured the light dependence of gross photosynthesis and oxygen uptake rates by membrane inlet mass spectrometry in two open ocean regions: the Amundsen Sea (Antarctica), dominated by Phaeocystis antarctica , and the North Atlantic, dominated by Emiliania huxleyi . In the North Atlantic...
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Online Access: | http://dx.doi.org/10.1002/lno.10486 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.10486 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10486 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.10486 https://aslopubs.onlinelibrary.wiley.com/doi/am-pdf/10.1002/lno.10486 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10486 |
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crwiley:10.1002/lno.10486 2024-06-02T07:54:59+00:00 Direct measurements of the light dependence of gross photosynthesis and oxygen consumption in the ocean Bailleul, Benjamin Park, Jisoo Brown, Christopher M. Bidle, Kay D. Lee, Sang Hoon Falkowski, Paul G. National Science Foundation 2017 http://dx.doi.org/10.1002/lno.10486 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.10486 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10486 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.10486 https://aslopubs.onlinelibrary.wiley.com/doi/am-pdf/10.1002/lno.10486 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10486 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 62, issue 3, page 1066-1079 ISSN 0024-3590 1939-5590 journal-article 2017 crwiley https://doi.org/10.1002/lno.10486 2024-05-03T12:05:42Z Abstract We measured the light dependence of gross photosynthesis and oxygen uptake rates by membrane inlet mass spectrometry in two open ocean regions: the Amundsen Sea (Antarctica), dominated by Phaeocystis antarctica , and the North Atlantic, dominated by Emiliania huxleyi . In the North Atlantic, respiration was independent of irradiance and was higher than the gross photosynthetic rate at all irradiances. In contrast, in the Amundsen Sea, oxygen uptake processes were light dependent; dark respiration was one order of magnitude lower than the maximal gross photosynthetic rate, but the oxygen uptake rate increased by 10 fold at surface irradiances. Our results suggest the light dependence of oxygen uptake in Amundsen Sea has two sources: one is independent of photosynthesis, and is possibly associated with the photo‐reduction of O 2 mediated by dissolved organic matter; the second reflects the activity of an oxidase fueled in the light with photosynthetic electron flow. Our results highlight the importance of improving our understanding of oxygen consuming reactions in the euphotic zone. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctica North Atlantic Wiley Online Library Amundsen Sea Limnology and Oceanography 62 3 1066 1079 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract We measured the light dependence of gross photosynthesis and oxygen uptake rates by membrane inlet mass spectrometry in two open ocean regions: the Amundsen Sea (Antarctica), dominated by Phaeocystis antarctica , and the North Atlantic, dominated by Emiliania huxleyi . In the North Atlantic, respiration was independent of irradiance and was higher than the gross photosynthetic rate at all irradiances. In contrast, in the Amundsen Sea, oxygen uptake processes were light dependent; dark respiration was one order of magnitude lower than the maximal gross photosynthetic rate, but the oxygen uptake rate increased by 10 fold at surface irradiances. Our results suggest the light dependence of oxygen uptake in Amundsen Sea has two sources: one is independent of photosynthesis, and is possibly associated with the photo‐reduction of O 2 mediated by dissolved organic matter; the second reflects the activity of an oxidase fueled in the light with photosynthetic electron flow. Our results highlight the importance of improving our understanding of oxygen consuming reactions in the euphotic zone. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Bailleul, Benjamin Park, Jisoo Brown, Christopher M. Bidle, Kay D. Lee, Sang Hoon Falkowski, Paul G. |
spellingShingle |
Bailleul, Benjamin Park, Jisoo Brown, Christopher M. Bidle, Kay D. Lee, Sang Hoon Falkowski, Paul G. Direct measurements of the light dependence of gross photosynthesis and oxygen consumption in the ocean |
author_facet |
Bailleul, Benjamin Park, Jisoo Brown, Christopher M. Bidle, Kay D. Lee, Sang Hoon Falkowski, Paul G. |
author_sort |
Bailleul, Benjamin |
title |
Direct measurements of the light dependence of gross photosynthesis and oxygen consumption in the ocean |
title_short |
Direct measurements of the light dependence of gross photosynthesis and oxygen consumption in the ocean |
title_full |
Direct measurements of the light dependence of gross photosynthesis and oxygen consumption in the ocean |
title_fullStr |
Direct measurements of the light dependence of gross photosynthesis and oxygen consumption in the ocean |
title_full_unstemmed |
Direct measurements of the light dependence of gross photosynthesis and oxygen consumption in the ocean |
title_sort |
direct measurements of the light dependence of gross photosynthesis and oxygen consumption in the ocean |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1002/lno.10486 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.10486 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10486 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.10486 https://aslopubs.onlinelibrary.wiley.com/doi/am-pdf/10.1002/lno.10486 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10486 |
geographic |
Amundsen Sea |
geographic_facet |
Amundsen Sea |
genre |
Amundsen Sea Antarc* Antarctica North Atlantic |
genre_facet |
Amundsen Sea Antarc* Antarctica North Atlantic |
op_source |
Limnology and Oceanography volume 62, issue 3, page 1066-1079 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/lno.10486 |
container_title |
Limnology and Oceanography |
container_volume |
62 |
container_issue |
3 |
container_start_page |
1066 |
op_container_end_page |
1079 |
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1800744667728314368 |