Learning from the past: Impact of the Arctic Oscillation on sea ice and marine productivity off northwest Greenland over the last 9,000 years
International audience Climate warming is rapidly reshaping the Arctic cryosphere and ocean conditions, with consequences for sea ice and pelagic productivity patterns affecting the entire marine food web. To predict how ongoing changes will impact Arctic marine ecosystems, concerted effort from var...
Published in: | Global Change Biology |
---|---|
Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2020
|
Subjects: | |
Online Access: | https://hal.science/hal-02991688 https://hal.science/hal-02991688/document https://hal.science/hal-02991688/file/Limogesetal2020_preprint.pdf https://doi.org/10.1111/gcb.15334 |
id |
ftunivnantes:oai:HAL:hal-02991688v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
diatoms highly branched isoprenoid (HBI) biomarkers marine sediment phytoplankton paleoceanography Arctic Oscillation Baffin Bay climate change [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology |
spellingShingle |
diatoms highly branched isoprenoid (HBI) biomarkers marine sediment phytoplankton paleoceanography Arctic Oscillation Baffin Bay climate change [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology Limoges, Audrey Weckström, Kaarina Ribeiro, Sofia Georgiadis, Eleanor Hansen, Katrine Elnegaard Martinez, Philippe Seidenkrantz, Marit-Solveig Giraudeau, Jacques Crosta, Xavier Massé, Guillaume Learning from the past: Impact of the Arctic Oscillation on sea ice and marine productivity off northwest Greenland over the last 9,000 years |
topic_facet |
diatoms highly branched isoprenoid (HBI) biomarkers marine sediment phytoplankton paleoceanography Arctic Oscillation Baffin Bay climate change [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology |
description |
International audience Climate warming is rapidly reshaping the Arctic cryosphere and ocean conditions, with consequences for sea ice and pelagic productivity patterns affecting the entire marine food web. To predict how ongoing changes will impact Arctic marine ecosystems, concerted effort from various disciplines is required. Here, we contribute multi-decadal reconstructions of changes in diatom production and sea-ice conditions in relation to Holocene climate and ocean conditions off Northwest Greenland. Our multiproxy study includes diatoms, sea-ice biomarkers (IP 25 and HBI III) and geochemical tracers (TOC, TOC:TN, δ 13 C, δ 15 N) from a sediment core record spanning the last ca. 9000 years. Our results suggest that the balance between the outflow of polar water from the Arctic, and input of Atlantic water from the Irminger Current into the West Greenland Current is a key factor in controlling sea-ice conditions, and both diatom phenology and production in northeastern Baffin Bay. Our proxy record notably shows that changes in sea-surface conditions initially forced by Neoglacial cooling were dynamically amplified by the shift in the dominant phase of the Arctic Oscillation (AO) mode that occurred at ca. 3000 yrs BP, and caused drastic changes in community composition and a decline in diatom production at the study site. In the future, with projected dominant positive AO conditions favored by Arctic warming, increased water column stratification may counteract the positive effect of a longer open-water growth season and negatively impact diatom production. |
author2 |
Department of Earth Sciences, University of New Brunswick University of New Brunswick (UNB) Helsingin yliopisto = Helsingfors universitet = University of Helsinki Geological Survey of Denmark and Greenland (GEUS) Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Department of Geoscience Aarhus Aarhus University Aarhus UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC) Takuvik International Research Laboratory Université Laval Québec (ULaval)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Limoges, Audrey Weckström, Kaarina Ribeiro, Sofia Georgiadis, Eleanor Hansen, Katrine Elnegaard Martinez, Philippe Seidenkrantz, Marit-Solveig Giraudeau, Jacques Crosta, Xavier Massé, Guillaume |
author_facet |
Limoges, Audrey Weckström, Kaarina Ribeiro, Sofia Georgiadis, Eleanor Hansen, Katrine Elnegaard Martinez, Philippe Seidenkrantz, Marit-Solveig Giraudeau, Jacques Crosta, Xavier Massé, Guillaume |
author_sort |
Limoges, Audrey |
title |
Learning from the past: Impact of the Arctic Oscillation on sea ice and marine productivity off northwest Greenland over the last 9,000 years |
title_short |
Learning from the past: Impact of the Arctic Oscillation on sea ice and marine productivity off northwest Greenland over the last 9,000 years |
title_full |
Learning from the past: Impact of the Arctic Oscillation on sea ice and marine productivity off northwest Greenland over the last 9,000 years |
title_fullStr |
Learning from the past: Impact of the Arctic Oscillation on sea ice and marine productivity off northwest Greenland over the last 9,000 years |
title_full_unstemmed |
Learning from the past: Impact of the Arctic Oscillation on sea ice and marine productivity off northwest Greenland over the last 9,000 years |
title_sort |
learning from the past: impact of the arctic oscillation on sea ice and marine productivity off northwest greenland over the last 9,000 years |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-02991688 https://hal.science/hal-02991688/document https://hal.science/hal-02991688/file/Limogesetal2020_preprint.pdf https://doi.org/10.1111/gcb.15334 |
geographic |
Arctic Baffin Bay Greenland |
geographic_facet |
Arctic Baffin Bay Greenland |
genre |
arctic cryosphere Arctic Baffin Bay Baffin Bay Baffin Climate change Greenland Phytoplankton Sea ice |
genre_facet |
arctic cryosphere Arctic Baffin Bay Baffin Bay Baffin Climate change Greenland Phytoplankton Sea ice |
op_source |
ISSN: 1354-1013 EISSN: 1365-2486 Global Change Biology https://hal.science/hal-02991688 Global Change Biology, In press, ⟨10.1111/gcb.15334⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/gcb.15334 hal-02991688 https://hal.science/hal-02991688 https://hal.science/hal-02991688/document https://hal.science/hal-02991688/file/Limogesetal2020_preprint.pdf doi:10.1111/gcb.15334 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1111/gcb.15334 |
container_title |
Global Change Biology |
container_volume |
26 |
container_issue |
12 |
container_start_page |
6767 |
op_container_end_page |
6786 |
_version_ |
1766304725407367168 |
spelling |
ftunivnantes:oai:HAL:hal-02991688v1 2023-05-15T14:30:58+02:00 Learning from the past: Impact of the Arctic Oscillation on sea ice and marine productivity off northwest Greenland over the last 9,000 years Limoges, Audrey Weckström, Kaarina Ribeiro, Sofia Georgiadis, Eleanor Hansen, Katrine Elnegaard Martinez, Philippe Seidenkrantz, Marit-Solveig Giraudeau, Jacques Crosta, Xavier Massé, Guillaume Department of Earth Sciences, University of New Brunswick University of New Brunswick (UNB) Helsingin yliopisto = Helsingfors universitet = University of Helsinki Geological Survey of Denmark and Greenland (GEUS) Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Department of Geoscience Aarhus Aarhus University Aarhus UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC) Takuvik International Research Laboratory Université Laval Québec (ULaval)-Centre National de la Recherche Scientifique (CNRS) 2020 https://hal.science/hal-02991688 https://hal.science/hal-02991688/document https://hal.science/hal-02991688/file/Limogesetal2020_preprint.pdf https://doi.org/10.1111/gcb.15334 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/gcb.15334 hal-02991688 https://hal.science/hal-02991688 https://hal.science/hal-02991688/document https://hal.science/hal-02991688/file/Limogesetal2020_preprint.pdf doi:10.1111/gcb.15334 info:eu-repo/semantics/OpenAccess ISSN: 1354-1013 EISSN: 1365-2486 Global Change Biology https://hal.science/hal-02991688 Global Change Biology, In press, ⟨10.1111/gcb.15334⟩ diatoms highly branched isoprenoid (HBI) biomarkers marine sediment phytoplankton paleoceanography Arctic Oscillation Baffin Bay climate change [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology info:eu-repo/semantics/article Journal articles 2020 ftunivnantes https://doi.org/10.1111/gcb.15334 2023-02-08T05:17:41Z International audience Climate warming is rapidly reshaping the Arctic cryosphere and ocean conditions, with consequences for sea ice and pelagic productivity patterns affecting the entire marine food web. To predict how ongoing changes will impact Arctic marine ecosystems, concerted effort from various disciplines is required. Here, we contribute multi-decadal reconstructions of changes in diatom production and sea-ice conditions in relation to Holocene climate and ocean conditions off Northwest Greenland. Our multiproxy study includes diatoms, sea-ice biomarkers (IP 25 and HBI III) and geochemical tracers (TOC, TOC:TN, δ 13 C, δ 15 N) from a sediment core record spanning the last ca. 9000 years. Our results suggest that the balance between the outflow of polar water from the Arctic, and input of Atlantic water from the Irminger Current into the West Greenland Current is a key factor in controlling sea-ice conditions, and both diatom phenology and production in northeastern Baffin Bay. Our proxy record notably shows that changes in sea-surface conditions initially forced by Neoglacial cooling were dynamically amplified by the shift in the dominant phase of the Arctic Oscillation (AO) mode that occurred at ca. 3000 yrs BP, and caused drastic changes in community composition and a decline in diatom production at the study site. In the future, with projected dominant positive AO conditions favored by Arctic warming, increased water column stratification may counteract the positive effect of a longer open-water growth season and negatively impact diatom production. Article in Journal/Newspaper arctic cryosphere Arctic Baffin Bay Baffin Bay Baffin Climate change Greenland Phytoplankton Sea ice Université de Nantes: HAL-UNIV-NANTES Arctic Baffin Bay Greenland Global Change Biology 26 12 6767 6786 |