Short commentary on marine productivity at Arctic shelf breaks: upwelling, advection and vertical mixing
The future of Arctic marine ecosystems has received increasing attention in recent years as the extent of the sea ice cover is dwindling. Although the Pacific and Atlantic inflows both import huge quantities of nutrients and plankton, they feed into the Arctic Ocean in quite diverse regions. The str...
Published in: | Ocean Science |
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Copernicus Publications
2018
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00006770 2023-05-15T14:41:24+02:00 Short commentary on marine productivity at Arctic shelf breaks: upwelling, advection and vertical mixing Randelhoff, Achim Sundfjord, Arild 2018-04 electronic https://doi.org/10.5194/os-14-293-2018 https://noa.gwlb.de/receive/cop_mods_00006770 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00006727/os-14-293-2018.pdf https://os.copernicus.org/articles/14/293/2018/os-14-293-2018.pdf eng eng Copernicus Publications Ocean Science -- http://www.bibliothek.uni-regensburg.de/ezeit/?2183769 -- http://www.copernicus.org/EGU/os/os.html -- 1812-0792 https://doi.org/10.5194/os-14-293-2018 https://noa.gwlb.de/receive/cop_mods_00006770 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00006727/os-14-293-2018.pdf https://os.copernicus.org/articles/14/293/2018/os-14-293-2018.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2018 ftnonlinearchiv https://doi.org/10.5194/os-14-293-2018 2022-02-08T22:58:52Z The future of Arctic marine ecosystems has received increasing attention in recent years as the extent of the sea ice cover is dwindling. Although the Pacific and Atlantic inflows both import huge quantities of nutrients and plankton, they feed into the Arctic Ocean in quite diverse regions. The strongly stratified Pacific sector has a historically heavy ice cover, a shallow shelf and dominant upwelling-favourable winds, while the Atlantic sector is weakly stratified, with a dynamic ice edge and a complex bathymetry. We argue that shelf break upwelling is likely not a universal but rather a regional, albeit recurring, feature of “the new Arctic”. It is the regional oceanography that decides its importance through a range of diverse factors such as stratification, bathymetry and wind forcing. Teasing apart their individual contributions in different regions can only be achieved by spatially resolved time series and dedicated modelling efforts. The Northern Barents Sea shelf is an example of a region where shelf break upwelling likely does not play a dominant role, in contrast to the shallower shelves north of Alaska where ample evidence for its importance has already accumulated. Still, other factors can contribute to marked future increases in biological productivity along the Arctic shelf break. A warming inflow of nutrient-rich Atlantic Water feeds plankton at the same time as it melts the sea ice, permitting increased photosynthesis. Concurrent changes in sea ice cover and zooplankton communities advected with the boundary currents make for a complex mosaic of regulating factors that do not allow for Arctic-wide generalizations. Article in Journal/Newspaper Arctic Arctic Ocean Barents Sea Sea ice Zooplankton Alaska Niedersächsisches Online-Archiv NOA Arctic Arctic Ocean Barents Sea Pacific Ocean Science 14 2 293 300 |
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Niedersächsisches Online-Archiv NOA |
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language |
English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Randelhoff, Achim Sundfjord, Arild Short commentary on marine productivity at Arctic shelf breaks: upwelling, advection and vertical mixing |
topic_facet |
article Verlagsveröffentlichung |
description |
The future of Arctic marine ecosystems has received increasing attention in recent years as the extent of the sea ice cover is dwindling. Although the Pacific and Atlantic inflows both import huge quantities of nutrients and plankton, they feed into the Arctic Ocean in quite diverse regions. The strongly stratified Pacific sector has a historically heavy ice cover, a shallow shelf and dominant upwelling-favourable winds, while the Atlantic sector is weakly stratified, with a dynamic ice edge and a complex bathymetry. We argue that shelf break upwelling is likely not a universal but rather a regional, albeit recurring, feature of “the new Arctic”. It is the regional oceanography that decides its importance through a range of diverse factors such as stratification, bathymetry and wind forcing. Teasing apart their individual contributions in different regions can only be achieved by spatially resolved time series and dedicated modelling efforts. The Northern Barents Sea shelf is an example of a region where shelf break upwelling likely does not play a dominant role, in contrast to the shallower shelves north of Alaska where ample evidence for its importance has already accumulated. Still, other factors can contribute to marked future increases in biological productivity along the Arctic shelf break. A warming inflow of nutrient-rich Atlantic Water feeds plankton at the same time as it melts the sea ice, permitting increased photosynthesis. Concurrent changes in sea ice cover and zooplankton communities advected with the boundary currents make for a complex mosaic of regulating factors that do not allow for Arctic-wide generalizations. |
format |
Article in Journal/Newspaper |
author |
Randelhoff, Achim Sundfjord, Arild |
author_facet |
Randelhoff, Achim Sundfjord, Arild |
author_sort |
Randelhoff, Achim |
title |
Short commentary on marine productivity at Arctic shelf breaks: upwelling, advection and vertical mixing |
title_short |
Short commentary on marine productivity at Arctic shelf breaks: upwelling, advection and vertical mixing |
title_full |
Short commentary on marine productivity at Arctic shelf breaks: upwelling, advection and vertical mixing |
title_fullStr |
Short commentary on marine productivity at Arctic shelf breaks: upwelling, advection and vertical mixing |
title_full_unstemmed |
Short commentary on marine productivity at Arctic shelf breaks: upwelling, advection and vertical mixing |
title_sort |
short commentary on marine productivity at arctic shelf breaks: upwelling, advection and vertical mixing |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/os-14-293-2018 https://noa.gwlb.de/receive/cop_mods_00006770 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00006727/os-14-293-2018.pdf https://os.copernicus.org/articles/14/293/2018/os-14-293-2018.pdf |
geographic |
Arctic Arctic Ocean Barents Sea Pacific |
geographic_facet |
Arctic Arctic Ocean Barents Sea Pacific |
genre |
Arctic Arctic Ocean Barents Sea Sea ice Zooplankton Alaska |
genre_facet |
Arctic Arctic Ocean Barents Sea Sea ice Zooplankton Alaska |
op_relation |
Ocean Science -- http://www.bibliothek.uni-regensburg.de/ezeit/?2183769 -- http://www.copernicus.org/EGU/os/os.html -- 1812-0792 https://doi.org/10.5194/os-14-293-2018 https://noa.gwlb.de/receive/cop_mods_00006770 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00006727/os-14-293-2018.pdf https://os.copernicus.org/articles/14/293/2018/os-14-293-2018.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/os-14-293-2018 |
container_title |
Ocean Science |
container_volume |
14 |
container_issue |
2 |
container_start_page |
293 |
op_container_end_page |
300 |
_version_ |
1766313180632449024 |