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 of frontal zones is evident, but a lack of information about thei...
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ftdoajarticles:oai:doaj.org/article:da77deeb2210472c91c3f8abcdebaffa 2023-05-15T14:51:10+02:00 Response of biological productivity to North Atlantic marine front migration during the Holocene D. J. Harning A. E. Jennings D. Köseoğlu S. T. Belt Á. Geirsdóttir J. Sepúlveda 2021-02-01T00:00:00Z https://doi.org/10.5194/cp-17-379-2021 https://doaj.org/article/da77deeb2210472c91c3f8abcdebaffa EN eng Copernicus Publications https://cp.copernicus.org/articles/17/379/2021/cp-17-379-2021.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-17-379-2021 1814-9324 1814-9332 https://doaj.org/article/da77deeb2210472c91c3f8abcdebaffa Climate of the Past, Vol 17, Pp 379-396 (2021) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2021 ftdoajarticles https://doi.org/10.5194/cp-17-379-2021 2022-12-31T15:56:54Z 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 of 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 assemblages to detail the biological response of the marine Arctic and polar front migrations on the North Iceland Shelf (NIS) over the last 8 kyr . 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 migrated southeastward to the NIS by ∼6.1 ka . Following a subsequent trend in regional cooling, Polar Water from the East Greenland Current and the associated polar front spread onto the NIS by ∼3.8 ka , greatly diminishing local algal productivity through the Little Ice Age. Within the last century, the Arctic and polar fronts have moved northward 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 analogues for how the current frontal configuration and the productivity that it supports may change as global temperatures continue to rise. Article in Journal/Newspaper Arctic East Greenland east greenland current Foraminifera* Greenland Iceland North Atlantic Directory of Open Access Journals: DOAJ Articles Arctic Greenland Climate of the Past 17 1 379 396 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 D. J. Harning A. E. Jennings D. Köseoğlu S. T. Belt Á. Geirsdóttir J. Sepúlveda Response of biological productivity to North Atlantic marine front migration during the Holocene |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
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 of 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 assemblages to detail the biological response of the marine Arctic and polar front migrations on the North Iceland Shelf (NIS) over the last 8 kyr . 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 migrated southeastward to the NIS by ∼6.1 ka . Following a subsequent trend in regional cooling, Polar Water from the East Greenland Current and the associated polar front spread onto the NIS by ∼3.8 ka , greatly diminishing local algal productivity through the Little Ice Age. Within the last century, the Arctic and polar fronts have moved northward 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 analogues for how the current frontal configuration and the productivity that it supports may change as global temperatures continue to rise. |
format |
Article in Journal/Newspaper |
author |
D. J. Harning A. E. Jennings D. Köseoğlu S. T. Belt Á. Geirsdóttir J. Sepúlveda |
author_facet |
D. J. Harning A. E. Jennings D. Köseoğlu S. T. Belt Á. Geirsdóttir J. Sepúlveda |
author_sort |
D. J. Harning |
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 Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/cp-17-379-2021 https://doaj.org/article/da77deeb2210472c91c3f8abcdebaffa |
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 |
Climate of the Past, Vol 17, Pp 379-396 (2021) |
op_relation |
https://cp.copernicus.org/articles/17/379/2021/cp-17-379-2021.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-17-379-2021 1814-9324 1814-9332 https://doaj.org/article/da77deeb2210472c91c3f8abcdebaffa |
op_doi |
https://doi.org/10.5194/cp-17-379-2021 |
container_title |
Climate of the Past |
container_volume |
17 |
container_issue |
1 |
container_start_page |
379 |
op_container_end_page |
396 |
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1766322225735008256 |