Supplementary material Olivier F et al revised 2020.docx 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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Online Access: | https://doi.org/10.6084/m9.figshare.12597087.v1 https://figshare.com/articles/journal_contribution/Supplementary_material_Olivier_F_et_al_revised_2020_docx_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/12597087 |
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ftroysocietyfig:oai:figshare.com:article/12597087 2023-05-15T14:50:21+02:00 Supplementary material Olivier F et al revised 2020.docx 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 Frédéric Olivier Blandine Gaillard Julien Thébault Tarik Meziane Réjean Tremblay Dany Dumont Simon Bélanger Michel Gosselin Aurélie Jolivet Laurent Chauvaud André L. Martel Søren Rysgaard Anne-Hélène Olivier Julien Pettré Jérôme Mars Silvain Gerber Philippe Archambault 2020-07-01T18:30:08Z https://doi.org/10.6084/m9.figshare.12597087.v1 https://figshare.com/articles/journal_contribution/Supplementary_material_Olivier_F_et_al_revised_2020_docx_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/12597087 unknown doi:10.6084/m9.figshare.12597087.v1 https://figshare.com/articles/journal_contribution/Supplementary_material_Olivier_F_et_al_revised_2020_docx_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/12597087 CC BY 4.0 CC-BY Oceanography Arctic climate change sclerochronology pelagic-benthic coupling match/mismatch hypothesis bivalve growth Astarte spp Text Journal contribution 2020 ftroysocietyfig https://doi.org/10.6084/m9.figshare.12597087.v1 2022-01-01T19:29:57Z 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'. Other Non-Article Part of Journal/Newspaper Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Climate change ice algae Phytoplankton Sea ice Zooplankton The Royal Society: Figshare Arctic Arctic Ocean Baffin Bay |
institution |
Open Polar |
collection |
The Royal Society: Figshare |
op_collection_id |
ftroysocietyfig |
language |
unknown |
topic |
Oceanography Arctic climate change sclerochronology pelagic-benthic coupling match/mismatch hypothesis bivalve growth Astarte spp |
spellingShingle |
Oceanography Arctic climate change sclerochronology pelagic-benthic coupling match/mismatch hypothesis bivalve growth Astarte spp Frédéric Olivier Blandine Gaillard Julien Thébault Tarik Meziane Réjean Tremblay Dany Dumont Simon Bélanger Michel Gosselin Aurélie Jolivet Laurent Chauvaud André L. Martel Søren Rysgaard Anne-Hélène Olivier Julien Pettré Jérôme Mars Silvain Gerber Philippe Archambault Supplementary material Olivier F et al revised 2020.docx 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 Arctic climate change sclerochronology pelagic-benthic coupling match/mismatch hypothesis bivalve growth Astarte spp |
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 |
Other Non-Article Part of Journal/Newspaper |
author |
Frédéric Olivier Blandine Gaillard Julien Thébault Tarik Meziane Réjean Tremblay Dany Dumont Simon Bélanger Michel Gosselin Aurélie Jolivet Laurent Chauvaud André L. Martel Søren Rysgaard Anne-Hélène Olivier Julien Pettré Jérôme Mars Silvain Gerber Philippe Archambault |
author_facet |
Frédéric Olivier Blandine Gaillard Julien Thébault Tarik Meziane Réjean Tremblay Dany Dumont Simon Bélanger Michel Gosselin Aurélie Jolivet Laurent Chauvaud André L. Martel Søren Rysgaard Anne-Hélène Olivier Julien Pettré Jérôme Mars Silvain Gerber Philippe Archambault |
author_sort |
Frédéric Olivier |
title |
Supplementary material Olivier F et al revised 2020.docx 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 Olivier F et al revised 2020.docx 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 Olivier F et al revised 2020.docx 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 Olivier F et al revised 2020.docx 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 Olivier F et al revised 2020.docx 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 olivier f et al revised 2020.docx 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 |
publishDate |
2020 |
url |
https://doi.org/10.6084/m9.figshare.12597087.v1 https://figshare.com/articles/journal_contribution/Supplementary_material_Olivier_F_et_al_revised_2020_docx_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/12597087 |
geographic |
Arctic Arctic Ocean Baffin Bay |
geographic_facet |
Arctic Arctic Ocean Baffin Bay |
genre |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Climate change ice algae Phytoplankton Sea ice Zooplankton |
genre_facet |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Climate change ice algae Phytoplankton Sea ice Zooplankton |
op_relation |
doi:10.6084/m9.figshare.12597087.v1 https://figshare.com/articles/journal_contribution/Supplementary_material_Olivier_F_et_al_revised_2020_docx_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/12597087 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.12597087.v1 |
_version_ |
1766321393877647360 |