Benthic diversity along an Arctic fjord: which are the key factors?
International audience Abstract Arctic coastal ecosystems include benthic communities that hold an important role within the marine food chain. Kelps, fucoid species, and coralline algae dominate rocky habitats, offering food and shelter for various species. Kelps and fucoid species also aid in carb...
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ftsorbonneuniv:oai:HAL:hal-04263707v1 2024-09-15T18:07:53+00:00 Benthic diversity along an Arctic fjord: which are the key factors? Lebrun, Anais Comeau, Steeve Gazeau, Frédéric Gattuso, Jean-Pierre Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Institut du Développement Durable et des Relations Internationales (IDDRI) Institut d'Études Politiques IEP - Paris 2023-10-29 https://hal.science/hal-04263707 https://doi.org/10.1101/2023.08.16.553514 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1101/2023.08.16.553514 hal-04263707 https://hal.science/hal-04263707 BIORXIV: 2023.08.16.553514 doi:10.1101/2023.08.16.553514 https://hal.science/hal-04263707 2023 [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/preprint Preprints, Working Papers, . 2023 ftsorbonneuniv https://doi.org/10.1101/2023.08.16.553514 2024-07-25T23:47:39Z International audience Abstract Arctic coastal ecosystems include benthic communities that hold an important role within the marine food chain. Kelps, fucoid species, and coralline algae dominate rocky habitats, offering food and shelter for various species. Kelps and fucoid species also aid in carbon sequestration, sediment stabilization, and erosion mitigation. In summer, the influx of freshwater from glacier and permafrost melt alters coastal waters conditions. The input of turbid freshwater influences underwater light, salinity, and substrate, impacting benthic organism distribution. This study investigates possible link between environmental conditions and benthic diversity through environmental DNA (eDNA). Six sites were monitored along Kongsfjorden (Svalbard,Norway) during the summer of 2021. Contrary to expectations, macroalgal distribution didn’t correlate with light, and suspension feeders showed no clear links with chlorophyll a or nutrient concentrations. Glacial influence may have contributed to higher benthic diversity. Predators’ presence, tied to glacier proximity, possibly explained this trend. However, further studies are needed to validate these observations and assumptions. Report glacier glacier Kongsfjord* Kongsfjorden permafrost Svalbard HAL Sorbonne Université |
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Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
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[SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology Lebrun, Anais Comeau, Steeve Gazeau, Frédéric Gattuso, Jean-Pierre Benthic diversity along an Arctic fjord: which are the key factors? |
topic_facet |
[SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Abstract Arctic coastal ecosystems include benthic communities that hold an important role within the marine food chain. Kelps, fucoid species, and coralline algae dominate rocky habitats, offering food and shelter for various species. Kelps and fucoid species also aid in carbon sequestration, sediment stabilization, and erosion mitigation. In summer, the influx of freshwater from glacier and permafrost melt alters coastal waters conditions. The input of turbid freshwater influences underwater light, salinity, and substrate, impacting benthic organism distribution. This study investigates possible link between environmental conditions and benthic diversity through environmental DNA (eDNA). Six sites were monitored along Kongsfjorden (Svalbard,Norway) during the summer of 2021. Contrary to expectations, macroalgal distribution didn’t correlate with light, and suspension feeders showed no clear links with chlorophyll a or nutrient concentrations. Glacial influence may have contributed to higher benthic diversity. Predators’ presence, tied to glacier proximity, possibly explained this trend. However, further studies are needed to validate these observations and assumptions. |
author2 |
Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Institut du Développement Durable et des Relations Internationales (IDDRI) Institut d'Études Politiques IEP - Paris |
format |
Report |
author |
Lebrun, Anais Comeau, Steeve Gazeau, Frédéric Gattuso, Jean-Pierre |
author_facet |
Lebrun, Anais Comeau, Steeve Gazeau, Frédéric Gattuso, Jean-Pierre |
author_sort |
Lebrun, Anais |
title |
Benthic diversity along an Arctic fjord: which are the key factors? |
title_short |
Benthic diversity along an Arctic fjord: which are the key factors? |
title_full |
Benthic diversity along an Arctic fjord: which are the key factors? |
title_fullStr |
Benthic diversity along an Arctic fjord: which are the key factors? |
title_full_unstemmed |
Benthic diversity along an Arctic fjord: which are the key factors? |
title_sort |
benthic diversity along an arctic fjord: which are the key factors? |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04263707 https://doi.org/10.1101/2023.08.16.553514 |
genre |
glacier glacier Kongsfjord* Kongsfjorden permafrost Svalbard |
genre_facet |
glacier glacier Kongsfjord* Kongsfjorden permafrost Svalbard |
op_source |
https://hal.science/hal-04263707 2023 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1101/2023.08.16.553514 hal-04263707 https://hal.science/hal-04263707 BIORXIV: 2023.08.16.553514 doi:10.1101/2023.08.16.553514 |
op_doi |
https://doi.org/10.1101/2023.08.16.553514 |
_version_ |
1810445234382831616 |