Organic carbon partitioning during spring phytoplankton blooms in the Ross Sea polynya and the Sargasso Sea
In this study we evaluate the partitioning of organic carbon between the particulate and dissolved pools during spring phytoplankton blooms in the Ross Sea, Antarctica, and the Sargasso Sea. As part of a multidisciplinary project in the Ross Sea polynya we investigated the dynamics of the dissolved...
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ftwilliammarycol:oai:scholarworks.wm.edu:vimsarticles-1665 2023-06-11T04:05:36+02:00 Organic carbon partitioning during spring phytoplankton blooms in the Ross Sea polynya and the Sargasso Sea Carlson, C.A. Ducklow, Hugh Hansell, DA Smith, Walker O., Jr. 1998-12-01T08:00:00Z application/pdf https://scholarworks.wm.edu/vimsarticles/672 https://doi.org/10.4319/lo.1998.43.3.0375; https://scholarworks.wm.edu/context/vimsarticles/article/1665/viewcontent/Carlson_et_al_1998_Limnology_and_Oceanography.pdf unknown W&M ScholarWorks https://scholarworks.wm.edu/vimsarticles/672 doi: https://doi.org/10.4319/lo.1998.43.3.0375 https://scholarworks.wm.edu/context/vimsarticles/article/1665/viewcontent/Carlson_et_al_1998_Limnology_and_Oceanography.pdf VIMS Articles Biological Sciences Peer-Reviewed Articles Terrestrial and Aquatic Ecology text 1998 ftwilliammarycol https://doi.org/10.4319/lo.1998.43.3.0375;10.4319/lo.1998.43.3.0375 2023-05-04T17:37:57Z In this study we evaluate the partitioning of organic carbon between the particulate and dissolved pools during spring phytoplankton blooms in the Ross Sea, Antarctica, and the Sargasso Sea. As part of a multidisciplinary project in the Ross Sea polynya we investigated the dynamics of the dissolved organic carbon (DOC) pool and the role it played in the carbon cycle during the 1994 spring phytoplankton bloom. Phytoplankton biomass during the bloom was dominated by an Antarctic Phaeocystis sp. We determined primary productivity (PP; via H14CO3, incubations), particulate organic carbon (POC), bacterial productivity (BP; via [3H]thymidine incorporation), and DOC during two occupations of 76°30′S from 175°W to 168°E. Results from this bloom are compared to blooms observed in the Sargasso Sea in the vicinity of the Bermuda Atlantic Time‐Series Study station (BATS). We present data that demonstrate clear differences in the production, biolability, and accumulation of DOC between the two ocean regions. Despite four‐ to fivefold greater PP in the Ross Sea, almost an order of magnitude less DOC (mmol m−2) accumulated during the Ross Sea bloom compared to the Sargasso Sea blooms. In the Ross Sea 89% (˜1 mol C m−2) of the total organic carbon (TOC) that accumulated during the bloom was partitioned as POC, with the remaining 11% (˜0.1 mol C m−2) partitioned as DOC. In contrast, a mean of 86% (0.7.5–1.0 mol m−2) of TOC accumulated as DOC during the 1992, 1993, and 1995 blooms in the Sargasso Sea, with as little as 14% (0.08–0.29 mol C m−2) accumulating as POC. Although a relatively small portion of the fixed carbon was produced as DOC in the Ross Sea, the bacterial carbon demand indicated that a qualitatively more labile carbon was produced in the Ross Sea compared to the Sargasso Sea. There are fundamental differences in organic carbon partitioning between the two systems that may be controlled by plankton community structure and food‐web dynamics. Text Antarc* Antarctic Antarctica Ross Sea W&M ScholarWorks Antarctic Ross Sea |
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Open Polar |
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W&M ScholarWorks |
op_collection_id |
ftwilliammarycol |
language |
unknown |
topic |
Biological Sciences Peer-Reviewed Articles Terrestrial and Aquatic Ecology |
spellingShingle |
Biological Sciences Peer-Reviewed Articles Terrestrial and Aquatic Ecology Carlson, C.A. Ducklow, Hugh Hansell, DA Smith, Walker O., Jr. Organic carbon partitioning during spring phytoplankton blooms in the Ross Sea polynya and the Sargasso Sea |
topic_facet |
Biological Sciences Peer-Reviewed Articles Terrestrial and Aquatic Ecology |
description |
In this study we evaluate the partitioning of organic carbon between the particulate and dissolved pools during spring phytoplankton blooms in the Ross Sea, Antarctica, and the Sargasso Sea. As part of a multidisciplinary project in the Ross Sea polynya we investigated the dynamics of the dissolved organic carbon (DOC) pool and the role it played in the carbon cycle during the 1994 spring phytoplankton bloom. Phytoplankton biomass during the bloom was dominated by an Antarctic Phaeocystis sp. We determined primary productivity (PP; via H14CO3, incubations), particulate organic carbon (POC), bacterial productivity (BP; via [3H]thymidine incorporation), and DOC during two occupations of 76°30′S from 175°W to 168°E. Results from this bloom are compared to blooms observed in the Sargasso Sea in the vicinity of the Bermuda Atlantic Time‐Series Study station (BATS). We present data that demonstrate clear differences in the production, biolability, and accumulation of DOC between the two ocean regions. Despite four‐ to fivefold greater PP in the Ross Sea, almost an order of magnitude less DOC (mmol m−2) accumulated during the Ross Sea bloom compared to the Sargasso Sea blooms. In the Ross Sea 89% (˜1 mol C m−2) of the total organic carbon (TOC) that accumulated during the bloom was partitioned as POC, with the remaining 11% (˜0.1 mol C m−2) partitioned as DOC. In contrast, a mean of 86% (0.7.5–1.0 mol m−2) of TOC accumulated as DOC during the 1992, 1993, and 1995 blooms in the Sargasso Sea, with as little as 14% (0.08–0.29 mol C m−2) accumulating as POC. Although a relatively small portion of the fixed carbon was produced as DOC in the Ross Sea, the bacterial carbon demand indicated that a qualitatively more labile carbon was produced in the Ross Sea compared to the Sargasso Sea. There are fundamental differences in organic carbon partitioning between the two systems that may be controlled by plankton community structure and food‐web dynamics. |
format |
Text |
author |
Carlson, C.A. Ducklow, Hugh Hansell, DA Smith, Walker O., Jr. |
author_facet |
Carlson, C.A. Ducklow, Hugh Hansell, DA Smith, Walker O., Jr. |
author_sort |
Carlson, C.A. |
title |
Organic carbon partitioning during spring phytoplankton blooms in the Ross Sea polynya and the Sargasso Sea |
title_short |
Organic carbon partitioning during spring phytoplankton blooms in the Ross Sea polynya and the Sargasso Sea |
title_full |
Organic carbon partitioning during spring phytoplankton blooms in the Ross Sea polynya and the Sargasso Sea |
title_fullStr |
Organic carbon partitioning during spring phytoplankton blooms in the Ross Sea polynya and the Sargasso Sea |
title_full_unstemmed |
Organic carbon partitioning during spring phytoplankton blooms in the Ross Sea polynya and the Sargasso Sea |
title_sort |
organic carbon partitioning during spring phytoplankton blooms in the ross sea polynya and the sargasso sea |
publisher |
W&M ScholarWorks |
publishDate |
1998 |
url |
https://scholarworks.wm.edu/vimsarticles/672 https://doi.org/10.4319/lo.1998.43.3.0375; https://scholarworks.wm.edu/context/vimsarticles/article/1665/viewcontent/Carlson_et_al_1998_Limnology_and_Oceanography.pdf |
geographic |
Antarctic Ross Sea |
geographic_facet |
Antarctic Ross Sea |
genre |
Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea |
op_source |
VIMS Articles |
op_relation |
https://scholarworks.wm.edu/vimsarticles/672 doi: https://doi.org/10.4319/lo.1998.43.3.0375 https://scholarworks.wm.edu/context/vimsarticles/article/1665/viewcontent/Carlson_et_al_1998_Limnology_and_Oceanography.pdf |
op_doi |
https://doi.org/10.4319/lo.1998.43.3.0375;10.4319/lo.1998.43.3.0375 |
_version_ |
1768377136712777728 |