Response of biological productivity to North Atlantic marine front migration during the Holocene
Publisher Copyright: © 2021 Author(s). 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 eviden...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | https://hdl.handle.net/20.500.11815/2730 https://doi.org/10.5194/cp-17-379-2021 |
id |
ftopinvisindi:oai:opinvisindi.is:20.500.11815/2730 |
---|---|
record_format |
openpolar |
spelling |
ftopinvisindi:oai:opinvisindi.is:20.500.11815/2730 2023-11-12T04:11:42+01:00 Response of biological productivity to North Atlantic marine front migration during the Holocene Harning, David John Jennings, Anne E. Köseoglu, Denizcan Belt, Simon T. Geirsdóttir, Áslaug Sepúlveda, Julio Faculty of Earth Sciences Engineering and Natural Sciences 2021-02-08 18 8421654 379-396 https://hdl.handle.net/20.500.11815/2730 https://doi.org/10.5194/cp-17-379-2021 en eng Climate of the Past; 17(1) http://www.scopus.com/inward/record.url?scp=85100809832&partnerID=8YFLogxK Harning , D J , Jennings , A E , Köseoglu , D , Belt , S T , Geirsdóttir , Á & Sepúlveda , J 2021 , ' Response of biological productivity to North Atlantic marine front migration during the Holocene ' , Climate of the Past , vol. 17 , no. 1 , pp. 379-396 . https://doi.org/10.5194/cp-17-379-2021 1814-9324 39234423 82b5f993-eb59-4941-96a8-d0c94dbdc9b7 85100809832 https://hdl.handle.net/20.500.11815/2730 doi:10.5194/cp-17-379-2021 info:eu-repo/semantics/openAccess Far dýra Norður-heimskautið Loftslagsrannsóknir Global and Planetary Change Stratigraphy Paleontology /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article 2021 ftopinvisindi https://doi.org/20.500.11815/273010.5194/cp-17-379-2021 2023-11-01T23:55:16Z Publisher Copyright: © 2021 Author(s). 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. Peer reviewed Article in Journal/Newspaper Arctic East Greenland east greenland current Foraminifera* Greenland Iceland North Atlantic Opin vísindi (Iceland) Arctic Greenland Climate of the Past 17 1 379 396 |
institution |
Open Polar |
collection |
Opin vísindi (Iceland) |
op_collection_id |
ftopinvisindi |
language |
English |
topic |
Far dýra Norður-heimskautið Loftslagsrannsóknir Global and Planetary Change Stratigraphy Paleontology |
spellingShingle |
Far dýra Norður-heimskautið Loftslagsrannsóknir Global and Planetary Change Stratigraphy Paleontology Harning, David John Jennings, Anne E. Köseoglu, Denizcan Belt, Simon T. Geirsdóttir, Áslaug Sepúlveda, Julio Response of biological productivity to North Atlantic marine front migration during the Holocene |
topic_facet |
Far dýra Norður-heimskautið Loftslagsrannsóknir Global and Planetary Change Stratigraphy Paleontology |
description |
Publisher Copyright: © 2021 Author(s). 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. Peer reviewed |
author2 |
Faculty of Earth Sciences Engineering and Natural Sciences |
format |
Article in Journal/Newspaper |
author |
Harning, David John Jennings, Anne E. Köseoglu, Denizcan Belt, Simon T. Geirsdóttir, Áslaug Sepúlveda, Julio |
author_facet |
Harning, David John Jennings, Anne E. Köseoglu, Denizcan Belt, Simon T. Geirsdóttir, Áslaug Sepúlveda, Julio |
author_sort |
Harning, David John |
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 |
publishDate |
2021 |
url |
https://hdl.handle.net/20.500.11815/2730 https://doi.org/10.5194/cp-17-379-2021 |
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_relation |
Climate of the Past; 17(1) http://www.scopus.com/inward/record.url?scp=85100809832&partnerID=8YFLogxK Harning , D J , Jennings , A E , Köseoglu , D , Belt , S T , Geirsdóttir , Á & Sepúlveda , J 2021 , ' Response of biological productivity to North Atlantic marine front migration during the Holocene ' , Climate of the Past , vol. 17 , no. 1 , pp. 379-396 . https://doi.org/10.5194/cp-17-379-2021 1814-9324 39234423 82b5f993-eb59-4941-96a8-d0c94dbdc9b7 85100809832 https://hdl.handle.net/20.500.11815/2730 doi:10.5194/cp-17-379-2021 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.11815/273010.5194/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 |
_version_ |
1782330680294768640 |