Food resources of the bivalve Astarte elliptica in a sub-Arctic fjord: a multi-biomarker approach
International audience It is generally agreed that pelagic-benthic coupling is tight on Arctic shelves, i.e. that organic matter produced in the surface layers supports the seafloor and benthos. However, this paradigm is mainly based on the assumption that phytoplankton and ice algae are the main so...
Published in: | Marine Ecology Progress Series |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2017
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Subjects: | |
Online Access: | https://hal.univ-brest.fr/hal-01510351 https://hal.univ-brest.fr/hal-01510351/document https://hal.univ-brest.fr/hal-01510351/file/72328.pdf https://doi.org/10.3354/meps12036 |
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ftunivbrest:oai:HAL:hal-01510351v1 |
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openpolar |
institution |
Open Polar |
collection |
Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
ACL Trophic ecology Stable isotopes Fatty acid trophic markers Compound-specific stable isotope analysis Sub-Arctic fjord Bivalve [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
ACL Trophic ecology Stable isotopes Fatty acid trophic markers Compound-specific stable isotope analysis Sub-Arctic fjord Bivalve [SDE.BE]Environmental Sciences/Biodiversity and Ecology Gaillard, B Meziane, T Tremblay, R Archambault, P Blicher, Martin E. Chauvaud, Laurent Rysgaard, S Olivier, Frédéric Food resources of the bivalve Astarte elliptica in a sub-Arctic fjord: a multi-biomarker approach |
topic_facet |
ACL Trophic ecology Stable isotopes Fatty acid trophic markers Compound-specific stable isotope analysis Sub-Arctic fjord Bivalve [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience It is generally agreed that pelagic-benthic coupling is tight on Arctic shelves, i.e. that organic matter produced in the surface layers supports the seafloor and benthos. However, this paradigm is mainly based on the assumption that phytoplankton and ice algae are the main sources of carbon for the benthic communities. Climate change is expected to alter the relative contribution of food sources for benthic organisms. Macroalgal biomass is predicted to increase in near-shore systems in response to increased temperature and reduced sea ice cover. Thus, a better understanding of the relative contribution of benthic and pelagic components in benthic food webs in the Arctic is needed. In this study, a multi-biomarker approach (stable isotopes, fatty acid trophic markers, and compound-specific stable isotope analysis) was applied to link potential sources of carbon, including particulate organic matter from subsurface and bottom waters, sediment organic matter, and 6 macroalgal species to the diet of the bivalve Astarte elliptica collected below the euphotic zone in a sub-Arctic fjord (Kobbefjord, Greenland). Results showed that A. elliptica feeds on particulate and sediment organic matter and that brown macroalgae significantly support the Arctic benthic food web. Multi-biomarker approaches can be used to determine the diet of benthic organisms and track temporal variability in sources of food. It therefore appears to be an interesting method to study food regime strategies in response to changing primary production dynamics. |
author2 |
Institut des Sciences de la MER de Rimouski (ISMER) Université du Québec à Rimouski (UQAR) Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Université Laval Québec (ULaval) Greenland Climate Research Centre Greenland Institute of Natural Resources (GINR) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre for Earth Observation Science Winnipeg University of Manitoba Winnipeg Arctic Research Centre Aarhus (ARC) Aarhus University Aarhus |
format |
Article in Journal/Newspaper |
author |
Gaillard, B Meziane, T Tremblay, R Archambault, P Blicher, Martin E. Chauvaud, Laurent Rysgaard, S Olivier, Frédéric |
author_facet |
Gaillard, B Meziane, T Tremblay, R Archambault, P Blicher, Martin E. Chauvaud, Laurent Rysgaard, S Olivier, Frédéric |
author_sort |
Gaillard, B |
title |
Food resources of the bivalve Astarte elliptica in a sub-Arctic fjord: a multi-biomarker approach |
title_short |
Food resources of the bivalve Astarte elliptica in a sub-Arctic fjord: a multi-biomarker approach |
title_full |
Food resources of the bivalve Astarte elliptica in a sub-Arctic fjord: a multi-biomarker approach |
title_fullStr |
Food resources of the bivalve Astarte elliptica in a sub-Arctic fjord: a multi-biomarker approach |
title_full_unstemmed |
Food resources of the bivalve Astarte elliptica in a sub-Arctic fjord: a multi-biomarker approach |
title_sort |
food resources of the bivalve astarte elliptica in a sub-arctic fjord: a multi-biomarker approach |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.univ-brest.fr/hal-01510351 https://hal.univ-brest.fr/hal-01510351/document https://hal.univ-brest.fr/hal-01510351/file/72328.pdf https://doi.org/10.3354/meps12036 |
long_lat |
ENVELOPE(-51.527,-51.527,64.177,64.177) |
geographic |
Arctic Greenland Kobbefjord |
geographic_facet |
Arctic Greenland Kobbefjord |
genre |
Arctic Climate change Greenland ice algae Phytoplankton Sea ice |
genre_facet |
Arctic Climate change Greenland ice algae Phytoplankton Sea ice |
op_source |
ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.univ-brest.fr/hal-01510351 Marine Ecology Progress Series, 2017, 567, pp.139-156. ⟨10.3354/meps12036⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps12036 hal-01510351 https://hal.univ-brest.fr/hal-01510351 https://hal.univ-brest.fr/hal-01510351/document https://hal.univ-brest.fr/hal-01510351/file/72328.pdf doi:10.3354/meps12036 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3354/meps12036 |
container_title |
Marine Ecology Progress Series |
container_volume |
567 |
container_start_page |
139 |
op_container_end_page |
156 |
_version_ |
1796303043926425600 |
spelling |
ftunivbrest:oai:HAL:hal-01510351v1 2024-04-14T08:06:17+00:00 Food resources of the bivalve Astarte elliptica in a sub-Arctic fjord: a multi-biomarker approach Gaillard, B Meziane, T Tremblay, R Archambault, P Blicher, Martin E. Chauvaud, Laurent Rysgaard, S Olivier, Frédéric Institut des Sciences de la MER de Rimouski (ISMER) Université du Québec à Rimouski (UQAR) Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Université Laval Québec (ULaval) Greenland Climate Research Centre Greenland Institute of Natural Resources (GINR) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre for Earth Observation Science Winnipeg University of Manitoba Winnipeg Arctic Research Centre Aarhus (ARC) Aarhus University Aarhus 2017-03 https://hal.univ-brest.fr/hal-01510351 https://hal.univ-brest.fr/hal-01510351/document https://hal.univ-brest.fr/hal-01510351/file/72328.pdf https://doi.org/10.3354/meps12036 en eng HAL CCSD Inter Research info:eu-repo/semantics/altIdentifier/doi/10.3354/meps12036 hal-01510351 https://hal.univ-brest.fr/hal-01510351 https://hal.univ-brest.fr/hal-01510351/document https://hal.univ-brest.fr/hal-01510351/file/72328.pdf doi:10.3354/meps12036 info:eu-repo/semantics/OpenAccess ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.univ-brest.fr/hal-01510351 Marine Ecology Progress Series, 2017, 567, pp.139-156. ⟨10.3354/meps12036⟩ ACL Trophic ecology Stable isotopes Fatty acid trophic markers Compound-specific stable isotope analysis Sub-Arctic fjord Bivalve [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2017 ftunivbrest https://doi.org/10.3354/meps12036 2024-03-21T16:24:19Z International audience It is generally agreed that pelagic-benthic coupling is tight on Arctic shelves, i.e. that organic matter produced in the surface layers supports the seafloor and benthos. However, this paradigm is mainly based on the assumption that phytoplankton and ice algae are the main sources of carbon for the benthic communities. Climate change is expected to alter the relative contribution of food sources for benthic organisms. Macroalgal biomass is predicted to increase in near-shore systems in response to increased temperature and reduced sea ice cover. Thus, a better understanding of the relative contribution of benthic and pelagic components in benthic food webs in the Arctic is needed. In this study, a multi-biomarker approach (stable isotopes, fatty acid trophic markers, and compound-specific stable isotope analysis) was applied to link potential sources of carbon, including particulate organic matter from subsurface and bottom waters, sediment organic matter, and 6 macroalgal species to the diet of the bivalve Astarte elliptica collected below the euphotic zone in a sub-Arctic fjord (Kobbefjord, Greenland). Results showed that A. elliptica feeds on particulate and sediment organic matter and that brown macroalgae significantly support the Arctic benthic food web. Multi-biomarker approaches can be used to determine the diet of benthic organisms and track temporal variability in sources of food. It therefore appears to be an interesting method to study food regime strategies in response to changing primary production dynamics. Article in Journal/Newspaper Arctic Climate change Greenland ice algae Phytoplankton Sea ice Université de Bretagne Occidentale: HAL Arctic Greenland Kobbefjord ENVELOPE(-51.527,-51.527,64.177,64.177) Marine Ecology Progress Series 567 139 156 |