Benthic diversity along an Arctic fjord: which are the key factors?
International audience 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 seques...
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ftsorbonneuniv:oai:HAL:hal-04263701v1 2024-09-15T18:07:53+00:00 Benthic diversity along an Arctic fjord: which are the key factors? Lebrun, Anaïs 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 2023-11-02 https://hal.science/hal-04263701 https://hal.science/hal-04263701/document https://hal.science/hal-04263701/file/Lebrun_etal_2023_bioRxiv.pdf en eng HAL CCSD hal-04263701 https://hal.science/hal-04263701 https://hal.science/hal-04263701/document https://hal.science/hal-04263701/file/Lebrun_etal_2023_bioRxiv.pdf BIORXIV: 2023.08.16.553514 info:eu-repo/semantics/OpenAccess https://hal.science/hal-04263701 2023 [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/preprint Preprints, Working Papers, . 2023 ftsorbonneuniv 2024-07-25T23:47:39Z International audience 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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HAL Sorbonne Université |
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ftsorbonneuniv |
language |
English |
topic |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
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[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Lebrun, Anaïs Comeau, Steeve Gazeau, Frédéric Gattuso, Jean-Pierre Benthic diversity along an Arctic fjord: which are the key factors? |
topic_facet |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience 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, Anaïs Comeau, Steeve Gazeau, Frédéric Gattuso, Jean-Pierre |
author_facet |
Lebrun, Anaïs Comeau, Steeve Gazeau, Frédéric Gattuso, Jean-Pierre |
author_sort |
Lebrun, Anaïs |
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-04263701 https://hal.science/hal-04263701/document https://hal.science/hal-04263701/file/Lebrun_etal_2023_bioRxiv.pdf |
genre |
glacier glacier Kongsfjord* Kongsfjorden permafrost Svalbard |
genre_facet |
glacier glacier Kongsfjord* Kongsfjorden permafrost Svalbard |
op_source |
https://hal.science/hal-04263701 2023 |
op_relation |
hal-04263701 https://hal.science/hal-04263701 https://hal.science/hal-04263701/document https://hal.science/hal-04263701/file/Lebrun_etal_2023_bioRxiv.pdf BIORXIV: 2023.08.16.553514 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1810445236457963520 |