Shifts in biogenic carbon flow from particulate to dissolved forms under high carbon dioxide and warm ocean conditions
Photosynthesis by phytoplankton in sunlit surface waters transforms inorganic carbon and nutrients into organic matter, a portion of which is subsequently transported vertically through the water column by the process known as the biological carbon pump (BCP). The BCP sustains the steep vertical gra...
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Online Access: | https://oceanrep.geomar.de/id/eprint/12179/ https://oceanrep.geomar.de/id/eprint/12179/1/2011GL047346.pdf https://doi.org/10.1029/2011GL047346 |
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ftoceanrep:oai:oceanrep.geomar.de:12179 2023-05-15T17:51:30+02:00 Shifts in biogenic carbon flow from particulate to dissolved forms under high carbon dioxide and warm ocean conditions Kim, Ja-Myung Lee, Kitack Shin, Kyungsoon Yang, Eun Jin Engel, Anja Karl, David M. Kim, Hyun-Cheol 2011 text https://oceanrep.geomar.de/id/eprint/12179/ https://oceanrep.geomar.de/id/eprint/12179/1/2011GL047346.pdf https://doi.org/10.1029/2011GL047346 en eng American Geophysical Union (AGU) https://oceanrep.geomar.de/id/eprint/12179/1/2011GL047346.pdf Kim, J. M., Lee, K., Shin, K., Yang, E. J., Engel, A. , Karl, D. M. and Kim, H. C. (2011) Shifts in biogenic carbon flow from particulate to dissolved forms under high carbon dioxide and warm ocean conditions. Open Access Geophysical Research Letters, 38 (8). DOI 10.1029/2011GL047346 <https://doi.org/10.1029/2011GL047346>. doi:10.1029/2011GL047346 info:eu-repo/semantics/openAccess Article PeerReviewed 2011 ftoceanrep https://doi.org/10.1029/2011GL047346 2023-04-07T15:00:31Z Photosynthesis by phytoplankton in sunlit surface waters transforms inorganic carbon and nutrients into organic matter, a portion of which is subsequently transported vertically through the water column by the process known as the biological carbon pump (BCP). The BCP sustains the steep vertical gradient in total dissolved carbon, thereby contributing to net carbon sequestration. Any changes in the vertical transportation of the organic matter as a result of future climate variations will directly affect surface ocean carbon dioxide (CO 2) concentrations, and subsequently influence oceanic uptake of atmospheric CO 2 and climate. Here we present results of experiments designed to investigate the potential effects of ocean acidification and warming on the BCP. These perturbation experiments were carried out in enclosures (3,000 L volume) in a controlled mesocosm facility that mimicked future pCO 2 (∼900 ppmv) and temperature (3°C higher than ambient) conditions. The elevated CO 2 and temperature treatments disproportionately enhanced the ratio of dissolved organic carbon (DOC) production to particulate organic carbon (POC) production, whereas the total organic carbon (TOC) production remained relatively constant under all conditions tested. A greater partitioning of organic carbon into the DOC pool indicated a shift in the organic carbon flow from the particulate to dissolved forms, which may affect the major pathways involved in organic carbon export and sequestration under future ocean conditions. Article in Journal/Newspaper Ocean acidification OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Geophysical Research Letters 38 8 n/a n/a |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Photosynthesis by phytoplankton in sunlit surface waters transforms inorganic carbon and nutrients into organic matter, a portion of which is subsequently transported vertically through the water column by the process known as the biological carbon pump (BCP). The BCP sustains the steep vertical gradient in total dissolved carbon, thereby contributing to net carbon sequestration. Any changes in the vertical transportation of the organic matter as a result of future climate variations will directly affect surface ocean carbon dioxide (CO 2) concentrations, and subsequently influence oceanic uptake of atmospheric CO 2 and climate. Here we present results of experiments designed to investigate the potential effects of ocean acidification and warming on the BCP. These perturbation experiments were carried out in enclosures (3,000 L volume) in a controlled mesocosm facility that mimicked future pCO 2 (∼900 ppmv) and temperature (3°C higher than ambient) conditions. The elevated CO 2 and temperature treatments disproportionately enhanced the ratio of dissolved organic carbon (DOC) production to particulate organic carbon (POC) production, whereas the total organic carbon (TOC) production remained relatively constant under all conditions tested. A greater partitioning of organic carbon into the DOC pool indicated a shift in the organic carbon flow from the particulate to dissolved forms, which may affect the major pathways involved in organic carbon export and sequestration under future ocean conditions. |
format |
Article in Journal/Newspaper |
author |
Kim, Ja-Myung Lee, Kitack Shin, Kyungsoon Yang, Eun Jin Engel, Anja Karl, David M. Kim, Hyun-Cheol |
spellingShingle |
Kim, Ja-Myung Lee, Kitack Shin, Kyungsoon Yang, Eun Jin Engel, Anja Karl, David M. Kim, Hyun-Cheol Shifts in biogenic carbon flow from particulate to dissolved forms under high carbon dioxide and warm ocean conditions |
author_facet |
Kim, Ja-Myung Lee, Kitack Shin, Kyungsoon Yang, Eun Jin Engel, Anja Karl, David M. Kim, Hyun-Cheol |
author_sort |
Kim, Ja-Myung |
title |
Shifts in biogenic carbon flow from particulate to dissolved forms under high carbon dioxide and warm ocean conditions |
title_short |
Shifts in biogenic carbon flow from particulate to dissolved forms under high carbon dioxide and warm ocean conditions |
title_full |
Shifts in biogenic carbon flow from particulate to dissolved forms under high carbon dioxide and warm ocean conditions |
title_fullStr |
Shifts in biogenic carbon flow from particulate to dissolved forms under high carbon dioxide and warm ocean conditions |
title_full_unstemmed |
Shifts in biogenic carbon flow from particulate to dissolved forms under high carbon dioxide and warm ocean conditions |
title_sort |
shifts in biogenic carbon flow from particulate to dissolved forms under high carbon dioxide and warm ocean conditions |
publisher |
American Geophysical Union (AGU) |
publishDate |
2011 |
url |
https://oceanrep.geomar.de/id/eprint/12179/ https://oceanrep.geomar.de/id/eprint/12179/1/2011GL047346.pdf https://doi.org/10.1029/2011GL047346 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://oceanrep.geomar.de/id/eprint/12179/1/2011GL047346.pdf Kim, J. M., Lee, K., Shin, K., Yang, E. J., Engel, A. , Karl, D. M. and Kim, H. C. (2011) Shifts in biogenic carbon flow from particulate to dissolved forms under high carbon dioxide and warm ocean conditions. Open Access Geophysical Research Letters, 38 (8). DOI 10.1029/2011GL047346 <https://doi.org/10.1029/2011GL047346>. doi:10.1029/2011GL047346 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2011GL047346 |
container_title |
Geophysical Research Letters |
container_volume |
38 |
container_issue |
8 |
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n/a |
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1766158659705896960 |