Dissolved oxygen dynamics during a phytoplankton bloom in the Ross Sea polynya
The Ross Sea polynya is one of the most productive regions in the Southern Ocean. However, limited access and high spatio-temporal variability of physical and biological processes limit the use of conventional oceanographic methods to measure early season primary productivity. High-resolution observ...
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ftwilliammarycol:oai:scholarworks.wm.edu:vimsarticles-1834 2023-06-11T04:06:09+02:00 Dissolved oxygen dynamics during a phytoplankton bloom in the Ross Sea polynya Queste, BY Heywood, KJ Smith, Walker O., Jr. Kaufman, DE Jickells, TD Dinniman, MS 2015-01-01T08:00:00Z application/pdf https://scholarworks.wm.edu/vimsarticles/834 doi: 10.1017/S0954102014000881 https://scholarworks.wm.edu/context/vimsarticles/article/1834/viewcontent/div_class_title_dissolved_oxygen_dynamics_during_a_phytoplankton_bloom_in_the_ross_sea_polynya_div.pdf unknown W&M ScholarWorks https://scholarworks.wm.edu/vimsarticles/834 doi: 10.1017/S0954102014000881 https://scholarworks.wm.edu/context/vimsarticles/article/1834/viewcontent/div_class_title_dissolved_oxygen_dynamics_during_a_phytoplankton_bloom_in_the_ross_sea_polynya_div.pdf http://creativecommons.org/licenses/by/3.0/ VIMS Articles Net Community Production Southern-Ocean High-Resolution North-Atlantic Water-Column Gas-Exchange Antarctica Variability Nutrients Shelf Biological Sciences Peer-Reviewed Articles Aquaculture and Fisheries text 2015 ftwilliammarycol https://doi.org/10.1017/S0954102014000881 2023-05-04T17:43:31Z The Ross Sea polynya is one of the most productive regions in the Southern Ocean. However, limited access and high spatio-temporal variability of physical and biological processes limit the use of conventional oceanographic methods to measure early season primary productivity. High-resolution observations from two Seagliders provide insights into the timing of a bloom in the southern Ross Sea polynya in December 2010. Changes in chlorophyll and oxygen concentrations are used to assess bloom dynamics. Using a ratio of dissolved oxygen to carbon, net primary production is estimated over the duration of the bloom showing a sensitive balance between net autotrophy and heterotrophy. The two gliders, observing spatially distinct regions during the same period, found net community production rates of -0.9 +/- 0.7 and 0.7 +/- 0.4 g Cm-2 d(-1). The difference highlights the spatial variability of biological processes and is probably caused by observing different stages of the bloom. The challenge of obtaining accurate primary productivity estimates highlights the need for increased observational efforts, particularly focusing on subsurface processes not resolved using surface or remote observations. Without an increased observational effort and the involvement of emerging technologies, it will not be possible to determine the seasonal trophic balance of the Ross Sea polynya and quantify the shelf's importance in carbon export. Text Antarc* Antarctica North Atlantic Ross Sea Southern Ocean W&M ScholarWorks Southern Ocean Ross Sea Antarctic Science 27 4 362 372 |
institution |
Open Polar |
collection |
W&M ScholarWorks |
op_collection_id |
ftwilliammarycol |
language |
unknown |
topic |
Net Community Production Southern-Ocean High-Resolution North-Atlantic Water-Column Gas-Exchange Antarctica Variability Nutrients Shelf Biological Sciences Peer-Reviewed Articles Aquaculture and Fisheries |
spellingShingle |
Net Community Production Southern-Ocean High-Resolution North-Atlantic Water-Column Gas-Exchange Antarctica Variability Nutrients Shelf Biological Sciences Peer-Reviewed Articles Aquaculture and Fisheries Queste, BY Heywood, KJ Smith, Walker O., Jr. Kaufman, DE Jickells, TD Dinniman, MS Dissolved oxygen dynamics during a phytoplankton bloom in the Ross Sea polynya |
topic_facet |
Net Community Production Southern-Ocean High-Resolution North-Atlantic Water-Column Gas-Exchange Antarctica Variability Nutrients Shelf Biological Sciences Peer-Reviewed Articles Aquaculture and Fisheries |
description |
The Ross Sea polynya is one of the most productive regions in the Southern Ocean. However, limited access and high spatio-temporal variability of physical and biological processes limit the use of conventional oceanographic methods to measure early season primary productivity. High-resolution observations from two Seagliders provide insights into the timing of a bloom in the southern Ross Sea polynya in December 2010. Changes in chlorophyll and oxygen concentrations are used to assess bloom dynamics. Using a ratio of dissolved oxygen to carbon, net primary production is estimated over the duration of the bloom showing a sensitive balance between net autotrophy and heterotrophy. The two gliders, observing spatially distinct regions during the same period, found net community production rates of -0.9 +/- 0.7 and 0.7 +/- 0.4 g Cm-2 d(-1). The difference highlights the spatial variability of biological processes and is probably caused by observing different stages of the bloom. The challenge of obtaining accurate primary productivity estimates highlights the need for increased observational efforts, particularly focusing on subsurface processes not resolved using surface or remote observations. Without an increased observational effort and the involvement of emerging technologies, it will not be possible to determine the seasonal trophic balance of the Ross Sea polynya and quantify the shelf's importance in carbon export. |
format |
Text |
author |
Queste, BY Heywood, KJ Smith, Walker O., Jr. Kaufman, DE Jickells, TD Dinniman, MS |
author_facet |
Queste, BY Heywood, KJ Smith, Walker O., Jr. Kaufman, DE Jickells, TD Dinniman, MS |
author_sort |
Queste, BY |
title |
Dissolved oxygen dynamics during a phytoplankton bloom in the Ross Sea polynya |
title_short |
Dissolved oxygen dynamics during a phytoplankton bloom in the Ross Sea polynya |
title_full |
Dissolved oxygen dynamics during a phytoplankton bloom in the Ross Sea polynya |
title_fullStr |
Dissolved oxygen dynamics during a phytoplankton bloom in the Ross Sea polynya |
title_full_unstemmed |
Dissolved oxygen dynamics during a phytoplankton bloom in the Ross Sea polynya |
title_sort |
dissolved oxygen dynamics during a phytoplankton bloom in the ross sea polynya |
publisher |
W&M ScholarWorks |
publishDate |
2015 |
url |
https://scholarworks.wm.edu/vimsarticles/834 https://scholarworks.wm.edu/context/vimsarticles/article/1834/viewcontent/div_class_title_dissolved_oxygen_dynamics_during_a_phytoplankton_bloom_in_the_ross_sea_polynya_div.pdf |
geographic |
Southern Ocean Ross Sea |
geographic_facet |
Southern Ocean Ross Sea |
genre |
Antarc* Antarctica North Atlantic Ross Sea Southern Ocean |
genre_facet |
Antarc* Antarctica North Atlantic Ross Sea Southern Ocean |
op_source |
VIMS Articles |
op_relation |
https://scholarworks.wm.edu/vimsarticles/834 doi: 10.1017/S0954102014000881 https://scholarworks.wm.edu/context/vimsarticles/article/1834/viewcontent/div_class_title_dissolved_oxygen_dynamics_during_a_phytoplankton_bloom_in_the_ross_sea_polynya_div.pdf |
op_rights |
http://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.1017/S0954102014000881 |
container_title |
Antarctic Science |
container_volume |
27 |
container_issue |
4 |
container_start_page |
362 |
op_container_end_page |
372 |
_version_ |
1768377937817501696 |