Response of biological productivity to North Atlantic marine front migration during the Holocene
Marine fronts delineate the boundary between distinct water masses and, through the advection of nutrients, are important facilitators of regional productivity and biodiversity. As the modern climate continues to change the migration frontal zones is evident, but a lack of information about their st...
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fttriple:oai:gotriple.eu:10670/1.pqs39y 2023-05-15T14:50:22+02:00 Response of biological productivity to North Atlantic marine front migration during the Holocene Harning, David J Jennings, Anne E Koseoglu, Denizcan Belt, Simon T Geirsdottir, Aslaug Sepulveda, Julio 2021-01-01 https://doi.org/10.5194/cp-2020-119 https://archimer.ifremer.fr/doc/00651/76326/77305.pdf https://archimer.ifremer.fr/doc/00651/76326/77306.pdf https://archimer.ifremer.fr/doc/00651/76326/81983.pdf https://archimer.ifremer.fr/doc/00651/76326/81984.pdf https://archimer.ifremer.fr/doc/00651/76326/ en eng Copernicus GmbH doi:10.5194/cp-2020-119 10670/1.pqs39y https://archimer.ifremer.fr/doc/00651/76326/77305.pdf https://archimer.ifremer.fr/doc/00651/76326/77306.pdf https://archimer.ifremer.fr/doc/00651/76326/81983.pdf https://archimer.ifremer.fr/doc/00651/76326/81984.pdf https://archimer.ifremer.fr/doc/00651/76326/ other Archimer, archive institutionnelle de l'Ifremer Climate of the Past (1814-9332) (Copernicus GmbH), 2021 , Vol. 17 , N. 1 , P. 379-396 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2021 fttriple https://doi.org/10.5194/cp-2020-119 2023-01-22T17:20:06Z Marine fronts delineate the boundary between distinct water masses and, through the advection of nutrients, are important facilitators of regional productivity and biodiversity. As the modern climate continues to change the migration frontal zones is evident, but a lack of information about their status prior to instrumental records hinders future projections. Here, we combine data from lipid biomarkers (archaeal isoprenoid glycerol dibiphytanyl glycerol tetraethers and algal highly branched isoprenoids) with planktic and benthic foraminifera assemblage to detail the biological response of the marine Arctic and Polar Front migrations on the North Iceland Shelf (NIS) over the last 8 ka. This multi-proxy approach enables us to quantify the thermal structure relating to Arctic and Polar Front migration, and test how this influences the corresponding changes in local pelagic productivity. Our data show that following an interval of Atlantic Water influence, the Arctic Front and its associated high pelagic productivity stabilized on the NIS at ~ 6.1 ka BP. Following a subsequent trend of regional cooling, Polar Water from the East Greenland Current and the associated Polar Front spread onto the NIS by ~ 3.8 ka BP, greatly diminishing local algal productivity. Within the last century, the Arctic and Polar Fronts have moved back to their current positions relative to the NIS and helped stimulate the productivity that partially supports Iceland's economy. Our Holocene records from the NIS provide important analogues for how the current frontal configuration and the productivity that it supports may change as global temperatures continue to rise. Text Arctic East Greenland east greenland current Foraminifera* Greenland Iceland North Atlantic Unknown Arctic Greenland |
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fttriple |
language |
English |
topic |
envir geo |
spellingShingle |
envir geo Harning, David J Jennings, Anne E Koseoglu, Denizcan Belt, Simon T Geirsdottir, Aslaug Sepulveda, Julio Response of biological productivity to North Atlantic marine front migration during the Holocene |
topic_facet |
envir geo |
description |
Marine fronts delineate the boundary between distinct water masses and, through the advection of nutrients, are important facilitators of regional productivity and biodiversity. As the modern climate continues to change the migration frontal zones is evident, but a lack of information about their status prior to instrumental records hinders future projections. Here, we combine data from lipid biomarkers (archaeal isoprenoid glycerol dibiphytanyl glycerol tetraethers and algal highly branched isoprenoids) with planktic and benthic foraminifera assemblage to detail the biological response of the marine Arctic and Polar Front migrations on the North Iceland Shelf (NIS) over the last 8 ka. This multi-proxy approach enables us to quantify the thermal structure relating to Arctic and Polar Front migration, and test how this influences the corresponding changes in local pelagic productivity. Our data show that following an interval of Atlantic Water influence, the Arctic Front and its associated high pelagic productivity stabilized on the NIS at ~ 6.1 ka BP. Following a subsequent trend of regional cooling, Polar Water from the East Greenland Current and the associated Polar Front spread onto the NIS by ~ 3.8 ka BP, greatly diminishing local algal productivity. Within the last century, the Arctic and Polar Fronts have moved back to their current positions relative to the NIS and helped stimulate the productivity that partially supports Iceland's economy. Our Holocene records from the NIS provide important analogues for how the current frontal configuration and the productivity that it supports may change as global temperatures continue to rise. |
format |
Text |
author |
Harning, David J Jennings, Anne E Koseoglu, Denizcan Belt, Simon T Geirsdottir, Aslaug Sepulveda, Julio |
author_facet |
Harning, David J Jennings, Anne E Koseoglu, Denizcan Belt, Simon T Geirsdottir, Aslaug Sepulveda, Julio |
author_sort |
Harning, David J |
title |
Response of biological productivity to North Atlantic marine front migration during the Holocene |
title_short |
Response of biological productivity to North Atlantic marine front migration during the Holocene |
title_full |
Response of biological productivity to North Atlantic marine front migration during the Holocene |
title_fullStr |
Response of biological productivity to North Atlantic marine front migration during the Holocene |
title_full_unstemmed |
Response of biological productivity to North Atlantic marine front migration during the Holocene |
title_sort |
response of biological productivity to north atlantic marine front migration during the holocene |
publisher |
Copernicus GmbH |
publishDate |
2021 |
url |
https://doi.org/10.5194/cp-2020-119 https://archimer.ifremer.fr/doc/00651/76326/77305.pdf https://archimer.ifremer.fr/doc/00651/76326/77306.pdf https://archimer.ifremer.fr/doc/00651/76326/81983.pdf https://archimer.ifremer.fr/doc/00651/76326/81984.pdf https://archimer.ifremer.fr/doc/00651/76326/ |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic East Greenland east greenland current Foraminifera* Greenland Iceland North Atlantic |
genre_facet |
Arctic East Greenland east greenland current Foraminifera* Greenland Iceland North Atlantic |
op_source |
Archimer, archive institutionnelle de l'Ifremer Climate of the Past (1814-9332) (Copernicus GmbH), 2021 , Vol. 17 , N. 1 , P. 379-396 |
op_relation |
doi:10.5194/cp-2020-119 10670/1.pqs39y https://archimer.ifremer.fr/doc/00651/76326/77305.pdf https://archimer.ifremer.fr/doc/00651/76326/77306.pdf https://archimer.ifremer.fr/doc/00651/76326/81983.pdf https://archimer.ifremer.fr/doc/00651/76326/81984.pdf https://archimer.ifremer.fr/doc/00651/76326/ |
op_rights |
other |
op_doi |
https://doi.org/10.5194/cp-2020-119 |
_version_ |
1766321405273571328 |