Supplementary material from "Shells of the bivalve Astarte moerchi give new evidence of a strong pelagic-benthic coupling shift occurring since the late 1970s in the North Water polynya"
Climate changes in the Arctic may weaken the currently tight pelagic-benthic coupling. In response to decreasing sea ice cover, arctic marine systems are expected to shift from a ‘sea-ice algae–benthos' to a ‘phytoplankton-zooplankton’ dominance. We used mollusc shells as bioarchives and fatty...
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The Royal Society
2020
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Online Access: | https://dx.doi.org/10.6084/m9.figshare.c.5046645 https://rs.figshare.com/collections/Supplementary_material_from_Shells_of_the_bivalve_i_Astarte_moerchi_i_give_new_evidence_of_a_strong_pelagic-benthic_coupling_shift_occurring_since_the_late_1970s_in_the_North_Water_polynya_/5046645 |
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ftdatacite:10.6084/m9.figshare.c.5046645 2023-05-15T14:53:39+02:00 Supplementary material from "Shells of the bivalve Astarte moerchi give new evidence of a strong pelagic-benthic coupling shift occurring since the late 1970s in the North Water polynya" Olivier, Frédéric Gaillard, Blandine Thébault, Julien Meziane, Tarik Réjean Tremblay Dumont, Dany Bélanger, Simon Gosselin, Michel Jolivet, Aurélie Chauvaud, Laurent Martel, André L. Rysgaard, Søren Anne-Hélène Olivier Pettré, Julien Mars, Jérôme Gerber, Silvain Archambault, Philippe 2020 https://dx.doi.org/10.6084/m9.figshare.c.5046645 https://rs.figshare.com/collections/Supplementary_material_from_Shells_of_the_bivalve_i_Astarte_moerchi_i_give_new_evidence_of_a_strong_pelagic-benthic_coupling_shift_occurring_since_the_late_1970s_in_the_North_Water_polynya_/5046645 unknown The Royal Society https://dx.doi.org/10.1098/rsta.2019.0353 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode CC-BY-4.0 CC-BY Oceanography FOS Earth and related environmental sciences Collection article 2020 ftdatacite https://doi.org/10.6084/m9.figshare.c.5046645 https://doi.org/10.1098/rsta.2019.0353 2021-11-05T12:55:41Z Climate changes in the Arctic may weaken the currently tight pelagic-benthic coupling. In response to decreasing sea ice cover, arctic marine systems are expected to shift from a ‘sea-ice algae–benthos' to a ‘phytoplankton-zooplankton’ dominance. We used mollusc shells as bioarchives and fatty acid trophic markers to estimate the effects of the reduction of sea ice cover on the food exported to the seafloor. Bathyal bivalve Astarte moerchi living at 600 m depth in northern Baffin Bay reveals a clear shift in growth variations and Ba/Ca ratios since the late 1970s, which we relate to a change in food availability. Tissue fatty acid compositions show that this species feeds mainly on microalgae exported from the euphotic zone to the seabed. We, therefore, suggest that changes in pelagic-benthic coupling are likely due either to local changes in sea ice dynamics, mediated through bottom-up regulation exerted by sea ice on phytoplankton production, or to a mismatch between phytoplankton bloom and zooplankton grazing due to phenological change. Both possibilities allow a more regular and increased transfer of food to the seabed.This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystems'. Article in Journal/Newspaper Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin ice algae Phytoplankton Sea ice Zooplankton DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean Baffin Bay |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Oceanography FOS Earth and related environmental sciences |
spellingShingle |
Oceanography FOS Earth and related environmental sciences Olivier, Frédéric Gaillard, Blandine Thébault, Julien Meziane, Tarik Réjean Tremblay Dumont, Dany Bélanger, Simon Gosselin, Michel Jolivet, Aurélie Chauvaud, Laurent Martel, André L. Rysgaard, Søren Anne-Hélène Olivier Pettré, Julien Mars, Jérôme Gerber, Silvain Archambault, Philippe Supplementary material from "Shells of the bivalve Astarte moerchi give new evidence of a strong pelagic-benthic coupling shift occurring since the late 1970s in the North Water polynya" |
topic_facet |
Oceanography FOS Earth and related environmental sciences |
description |
Climate changes in the Arctic may weaken the currently tight pelagic-benthic coupling. In response to decreasing sea ice cover, arctic marine systems are expected to shift from a ‘sea-ice algae–benthos' to a ‘phytoplankton-zooplankton’ dominance. We used mollusc shells as bioarchives and fatty acid trophic markers to estimate the effects of the reduction of sea ice cover on the food exported to the seafloor. Bathyal bivalve Astarte moerchi living at 600 m depth in northern Baffin Bay reveals a clear shift in growth variations and Ba/Ca ratios since the late 1970s, which we relate to a change in food availability. Tissue fatty acid compositions show that this species feeds mainly on microalgae exported from the euphotic zone to the seabed. We, therefore, suggest that changes in pelagic-benthic coupling are likely due either to local changes in sea ice dynamics, mediated through bottom-up regulation exerted by sea ice on phytoplankton production, or to a mismatch between phytoplankton bloom and zooplankton grazing due to phenological change. Both possibilities allow a more regular and increased transfer of food to the seabed.This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystems'. |
format |
Article in Journal/Newspaper |
author |
Olivier, Frédéric Gaillard, Blandine Thébault, Julien Meziane, Tarik Réjean Tremblay Dumont, Dany Bélanger, Simon Gosselin, Michel Jolivet, Aurélie Chauvaud, Laurent Martel, André L. Rysgaard, Søren Anne-Hélène Olivier Pettré, Julien Mars, Jérôme Gerber, Silvain Archambault, Philippe |
author_facet |
Olivier, Frédéric Gaillard, Blandine Thébault, Julien Meziane, Tarik Réjean Tremblay Dumont, Dany Bélanger, Simon Gosselin, Michel Jolivet, Aurélie Chauvaud, Laurent Martel, André L. Rysgaard, Søren Anne-Hélène Olivier Pettré, Julien Mars, Jérôme Gerber, Silvain Archambault, Philippe |
author_sort |
Olivier, Frédéric |
title |
Supplementary material from "Shells of the bivalve Astarte moerchi give new evidence of a strong pelagic-benthic coupling shift occurring since the late 1970s in the North Water polynya" |
title_short |
Supplementary material from "Shells of the bivalve Astarte moerchi give new evidence of a strong pelagic-benthic coupling shift occurring since the late 1970s in the North Water polynya" |
title_full |
Supplementary material from "Shells of the bivalve Astarte moerchi give new evidence of a strong pelagic-benthic coupling shift occurring since the late 1970s in the North Water polynya" |
title_fullStr |
Supplementary material from "Shells of the bivalve Astarte moerchi give new evidence of a strong pelagic-benthic coupling shift occurring since the late 1970s in the North Water polynya" |
title_full_unstemmed |
Supplementary material from "Shells of the bivalve Astarte moerchi give new evidence of a strong pelagic-benthic coupling shift occurring since the late 1970s in the North Water polynya" |
title_sort |
supplementary material from "shells of the bivalve astarte moerchi give new evidence of a strong pelagic-benthic coupling shift occurring since the late 1970s in the north water polynya" |
publisher |
The Royal Society |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.5046645 https://rs.figshare.com/collections/Supplementary_material_from_Shells_of_the_bivalve_i_Astarte_moerchi_i_give_new_evidence_of_a_strong_pelagic-benthic_coupling_shift_occurring_since_the_late_1970s_in_the_North_Water_polynya_/5046645 |
geographic |
Arctic Arctic Ocean Baffin Bay |
geographic_facet |
Arctic Arctic Ocean Baffin Bay |
genre |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin ice algae Phytoplankton Sea ice Zooplankton |
genre_facet |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin ice algae Phytoplankton Sea ice Zooplankton |
op_relation |
https://dx.doi.org/10.1098/rsta.2019.0353 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode CC-BY-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.5046645 https://doi.org/10.1098/rsta.2019.0353 |
_version_ |
1766325242979942400 |