Linking the Modern Distribution of Biogenic Proxies in High Arctic Greenland Shelf Sediments to Sea Ice, Primary Production, and Arctic-Atlantic Inflow
The eastern north coast of Greenland is considered to be highly sensitive to the ongoing Arctic warming, but there is a general lack of data on modern conditions and in particular on the modern distribution of climate and environmental proxies to provide a baseline and context for studies on past va...
Published in: | Journal of Geophysical Research: Biogeosciences |
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Main Authors: | , , , , , , , , , , |
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2018
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Online Access: | https://pure.au.dk/portal/en/publications/729f3aef-2bd8-417d-97c7-c4277b144911 https://doi.org/10.1002/2017JG003840 https://pure.au.dk/ws/files/128397476/Limoges_et_al_2018_Journal_of_Geophysical_Research_3A_Biogeosciences.pdf |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/729f3aef-2bd8-417d-97c7-c4277b144911 2024-05-12T07:57:11+00:00 Linking the Modern Distribution of Biogenic Proxies in High Arctic Greenland Shelf Sediments to Sea Ice, Primary Production, and Arctic-Atlantic Inflow Limoges, Audrey Ribeiro, Sofia Weckstrom, Kaarina Heikkila, Maija Zamelczyk, Katarzyna Andersen, Thorbjorn J. Tallberg, Petra Masse, Guillaume Rysgaard, Soren Norgaard-Pedersen, Niels Seidenkrantz, Marit-Solveig 2018-03 application/pdf https://pure.au.dk/portal/en/publications/729f3aef-2bd8-417d-97c7-c4277b144911 https://doi.org/10.1002/2017JG003840 https://pure.au.dk/ws/files/128397476/Limoges_et_al_2018_Journal_of_Geophysical_Research_3A_Biogeosciences.pdf eng eng https://pure.au.dk/portal/en/publications/729f3aef-2bd8-417d-97c7-c4277b144911 info:eu-repo/semantics/openAccess Limoges , A , Ribeiro , S , Weckstrom , K , Heikkila , M , Zamelczyk , K , Andersen , T J , Tallberg , P , Masse , G , Rysgaard , S , Norgaard-Pedersen , N & Seidenkrantz , M-S 2018 , ' Linking the Modern Distribution of Biogenic Proxies in High Arctic Greenland Shelf Sediments to Sea Ice, Primary Production, and Arctic-Atlantic Inflow ' , Journal of Geophysical Research: Biogeosciences , vol. 123 , no. 3 , pp. 760-786 . https://doi.org/10.1002/2017JG003840 Arctic sea ice Greenland fjords paleoclimate microfossils biomarkers DINOFLAGELLATE POLARELLA-GLACIALIS BENTHIC FORAMINIFERAL ASSEMBLAGES CASSIDULINA-TERETIS TAPPAN NORTHERN NORTH-ATLANTIC CARBON-ISOTOPE RATIOS FRESH-WATER ORGANIC-MATTER FRAM STRAIT SURFACE SEDIMENTS STABLE-ISOTOPES article 2018 ftuniaarhuspubl https://doi.org/10.1002/2017JG003840 2024-04-17T23:42:41Z The eastern north coast of Greenland is considered to be highly sensitive to the ongoing Arctic warming, but there is a general lack of data on modern conditions and in particular on the modern distribution of climate and environmental proxies to provide a baseline and context for studies on past variability. Here we present a detailed investigation of 11 biogenic proxies preserved in surface sediments from the remote High Arctic Wandel Sea shelf, the entrance to the Independence, Hagen, and Danmark fjords. The composition of organic matter (organic carbon, C:N ratios, δ 13 C, δ 15 N, biogenic silica, and IP 25 ) and microfossil assemblages revealed an overall low primary production dominated by benthic diatoms, especially at the shallow sites. While the benthic and planktic foraminiferal assemblages underline the intrusion of chilled Atlantic waters into the deeper parts of the study area, the distribution of organic-walled dinoflagellate cysts is controlled by the local bathymetry and sea ice conditions. The distribution of the dinoflagellate cyst Polarella glacialis matches that of seasonal sea ice and the specific biomarker IP 25 , highlighting the potential of this species for paleo sea ice studies. The information inferred from our multiproxy study has important implications for the interpretation of the biogenic-proxy signal preserved in sediments from circum-Arctic fjords and shelf regions and can serve as a baseline for future studies. This is the first study of its kind in this area. Article in Journal/Newspaper Arctic Arctic Foraminifera* Fram Strait Greenland North Atlantic Sea ice Wandel Sea Aarhus University: Research Arctic Greenland Hagen ENVELOPE(6.545,6.545,62.545,62.545) Wandel ENVELOPE(-64.000,-64.000,-65.083,-65.083) Journal of Geophysical Research: Biogeosciences 123 3 760 786 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Arctic sea ice Greenland fjords paleoclimate microfossils biomarkers DINOFLAGELLATE POLARELLA-GLACIALIS BENTHIC FORAMINIFERAL ASSEMBLAGES CASSIDULINA-TERETIS TAPPAN NORTHERN NORTH-ATLANTIC CARBON-ISOTOPE RATIOS FRESH-WATER ORGANIC-MATTER FRAM STRAIT SURFACE SEDIMENTS STABLE-ISOTOPES |
spellingShingle |
Arctic sea ice Greenland fjords paleoclimate microfossils biomarkers DINOFLAGELLATE POLARELLA-GLACIALIS BENTHIC FORAMINIFERAL ASSEMBLAGES CASSIDULINA-TERETIS TAPPAN NORTHERN NORTH-ATLANTIC CARBON-ISOTOPE RATIOS FRESH-WATER ORGANIC-MATTER FRAM STRAIT SURFACE SEDIMENTS STABLE-ISOTOPES Limoges, Audrey Ribeiro, Sofia Weckstrom, Kaarina Heikkila, Maija Zamelczyk, Katarzyna Andersen, Thorbjorn J. Tallberg, Petra Masse, Guillaume Rysgaard, Soren Norgaard-Pedersen, Niels Seidenkrantz, Marit-Solveig Linking the Modern Distribution of Biogenic Proxies in High Arctic Greenland Shelf Sediments to Sea Ice, Primary Production, and Arctic-Atlantic Inflow |
topic_facet |
Arctic sea ice Greenland fjords paleoclimate microfossils biomarkers DINOFLAGELLATE POLARELLA-GLACIALIS BENTHIC FORAMINIFERAL ASSEMBLAGES CASSIDULINA-TERETIS TAPPAN NORTHERN NORTH-ATLANTIC CARBON-ISOTOPE RATIOS FRESH-WATER ORGANIC-MATTER FRAM STRAIT SURFACE SEDIMENTS STABLE-ISOTOPES |
description |
The eastern north coast of Greenland is considered to be highly sensitive to the ongoing Arctic warming, but there is a general lack of data on modern conditions and in particular on the modern distribution of climate and environmental proxies to provide a baseline and context for studies on past variability. Here we present a detailed investigation of 11 biogenic proxies preserved in surface sediments from the remote High Arctic Wandel Sea shelf, the entrance to the Independence, Hagen, and Danmark fjords. The composition of organic matter (organic carbon, C:N ratios, δ 13 C, δ 15 N, biogenic silica, and IP 25 ) and microfossil assemblages revealed an overall low primary production dominated by benthic diatoms, especially at the shallow sites. While the benthic and planktic foraminiferal assemblages underline the intrusion of chilled Atlantic waters into the deeper parts of the study area, the distribution of organic-walled dinoflagellate cysts is controlled by the local bathymetry and sea ice conditions. The distribution of the dinoflagellate cyst Polarella glacialis matches that of seasonal sea ice and the specific biomarker IP 25 , highlighting the potential of this species for paleo sea ice studies. The information inferred from our multiproxy study has important implications for the interpretation of the biogenic-proxy signal preserved in sediments from circum-Arctic fjords and shelf regions and can serve as a baseline for future studies. This is the first study of its kind in this area. |
format |
Article in Journal/Newspaper |
author |
Limoges, Audrey Ribeiro, Sofia Weckstrom, Kaarina Heikkila, Maija Zamelczyk, Katarzyna Andersen, Thorbjorn J. Tallberg, Petra Masse, Guillaume Rysgaard, Soren Norgaard-Pedersen, Niels Seidenkrantz, Marit-Solveig |
author_facet |
Limoges, Audrey Ribeiro, Sofia Weckstrom, Kaarina Heikkila, Maija Zamelczyk, Katarzyna Andersen, Thorbjorn J. Tallberg, Petra Masse, Guillaume Rysgaard, Soren Norgaard-Pedersen, Niels Seidenkrantz, Marit-Solveig |
author_sort |
Limoges, Audrey |
title |
Linking the Modern Distribution of Biogenic Proxies in High Arctic Greenland Shelf Sediments to Sea Ice, Primary Production, and Arctic-Atlantic Inflow |
title_short |
Linking the Modern Distribution of Biogenic Proxies in High Arctic Greenland Shelf Sediments to Sea Ice, Primary Production, and Arctic-Atlantic Inflow |
title_full |
Linking the Modern Distribution of Biogenic Proxies in High Arctic Greenland Shelf Sediments to Sea Ice, Primary Production, and Arctic-Atlantic Inflow |
title_fullStr |
Linking the Modern Distribution of Biogenic Proxies in High Arctic Greenland Shelf Sediments to Sea Ice, Primary Production, and Arctic-Atlantic Inflow |
title_full_unstemmed |
Linking the Modern Distribution of Biogenic Proxies in High Arctic Greenland Shelf Sediments to Sea Ice, Primary Production, and Arctic-Atlantic Inflow |
title_sort |
linking the modern distribution of biogenic proxies in high arctic greenland shelf sediments to sea ice, primary production, and arctic-atlantic inflow |
publishDate |
2018 |
url |
https://pure.au.dk/portal/en/publications/729f3aef-2bd8-417d-97c7-c4277b144911 https://doi.org/10.1002/2017JG003840 https://pure.au.dk/ws/files/128397476/Limoges_et_al_2018_Journal_of_Geophysical_Research_3A_Biogeosciences.pdf |
long_lat |
ENVELOPE(6.545,6.545,62.545,62.545) ENVELOPE(-64.000,-64.000,-65.083,-65.083) |
geographic |
Arctic Greenland Hagen Wandel |
geographic_facet |
Arctic Greenland Hagen Wandel |
genre |
Arctic Arctic Foraminifera* Fram Strait Greenland North Atlantic Sea ice Wandel Sea |
genre_facet |
Arctic Arctic Foraminifera* Fram Strait Greenland North Atlantic Sea ice Wandel Sea |
op_source |
Limoges , A , Ribeiro , S , Weckstrom , K , Heikkila , M , Zamelczyk , K , Andersen , T J , Tallberg , P , Masse , G , Rysgaard , S , Norgaard-Pedersen , N & Seidenkrantz , M-S 2018 , ' Linking the Modern Distribution of Biogenic Proxies in High Arctic Greenland Shelf Sediments to Sea Ice, Primary Production, and Arctic-Atlantic Inflow ' , Journal of Geophysical Research: Biogeosciences , vol. 123 , no. 3 , pp. 760-786 . https://doi.org/10.1002/2017JG003840 |
op_relation |
https://pure.au.dk/portal/en/publications/729f3aef-2bd8-417d-97c7-c4277b144911 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2017JG003840 |
container_title |
Journal of Geophysical Research: Biogeosciences |
container_volume |
123 |
container_issue |
3 |
container_start_page |
760 |
op_container_end_page |
786 |
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