Trophic ecology of epibenthic communities exposed to different sea-ice concentrations across the Canadian Arctic Ocean
Sea ice is one of the most critical environmental drivers shaping primary production and fluxes of organic inputs to benthic communities in the Arctic Ocean. Fluctuations in organic inputs influence ecological relationships, trophic cascades, and energy fluxes. However, changes in sea-ice concentrat...
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ftunivbrest:oai:HAL:hal-04204163v1 2024-02-11T10:00:29+01:00 Trophic ecology of epibenthic communities exposed to different sea-ice concentrations across the Canadian Arctic Ocean Yunda-Guarin, Gustavo Michel, Loïc Roy, Virginie Friscourt, Noémie Gosselin, Michel Nozais, Christian Archambault, Philippe Biologie et Ecologie des Ecosystèmes Marins Profonds (BEEP) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) 2023-09 https://hal.science/hal-04204163 https://doi.org/10.1016/j.pocean.2023.103105 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pocean.2023.103105 hal-04204163 https://hal.science/hal-04204163 doi:10.1016/j.pocean.2023.103105 ISSN: 0079-6611 Progress in Oceanography https://hal.science/hal-04204163 Progress in Oceanography, 2023, 217, 103105 (12p.). ⟨10.1016/j.pocean.2023.103105⟩ [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2023 ftunivbrest https://doi.org/10.1016/j.pocean.2023.103105 2024-01-23T23:37:49Z Sea ice is one of the most critical environmental drivers shaping primary production and fluxes of organic inputs to benthic communities in the Arctic Ocean. Fluctuations in organic inputs influence ecological relationships, trophic cascades, and energy fluxes. However, changes in sea-ice concentration (SIC) induced by global warming could lead to significant shifts in trophic interactions, ultimately affecting the functioning of Arctic food webs. Despite the increasing concern over the need to understand benthic species and food web responses to rapid sea-ice loss, few studies have addressed this topic so far. Using multiple niche metrics based on stable isotopes, this research examined the trophic ecology of epibenthic communities in areas with different SIC across the Canadian Arctic Ocean. We found that trophic niches varied according to complex interactions between environmental conditions, resource supply, and biotic pressures such as predation and competition. Our results highlighted a lower isotopic richness (i.e., shorter food chain length and niche width) in low and high SIC areas, suggesting homogeneity of resources and a low diversity of food items ingested by individuals. In contrast, a higher isotopic richness (i.e., broad niche) was observed in the moderate SIC area, implying higher heterogeneity in basal food sources and consumers using individual trophic niches. Finally, our findings suggested a lower isotopic redundancy in areas with high SIC compared to low and moderate SIC. Overall, our results support the idea that sea ice is an important driver of benthic food web dynamics and reinforce the urgent need for further investigations of declining sea ice cover impacts on Arctic food web functioning. Article in Journal/Newspaper Arctic Arctic Ocean Global warming Sea ice Université de Bretagne Occidentale: HAL Arctic Arctic Ocean Progress in Oceanography 217 103105 |
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Université de Bretagne Occidentale: HAL |
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ftunivbrest |
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English |
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[SDV]Life Sciences [q-bio] |
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[SDV]Life Sciences [q-bio] Yunda-Guarin, Gustavo Michel, Loïc Roy, Virginie Friscourt, Noémie Gosselin, Michel Nozais, Christian Archambault, Philippe Trophic ecology of epibenthic communities exposed to different sea-ice concentrations across the Canadian Arctic Ocean |
topic_facet |
[SDV]Life Sciences [q-bio] |
description |
Sea ice is one of the most critical environmental drivers shaping primary production and fluxes of organic inputs to benthic communities in the Arctic Ocean. Fluctuations in organic inputs influence ecological relationships, trophic cascades, and energy fluxes. However, changes in sea-ice concentration (SIC) induced by global warming could lead to significant shifts in trophic interactions, ultimately affecting the functioning of Arctic food webs. Despite the increasing concern over the need to understand benthic species and food web responses to rapid sea-ice loss, few studies have addressed this topic so far. Using multiple niche metrics based on stable isotopes, this research examined the trophic ecology of epibenthic communities in areas with different SIC across the Canadian Arctic Ocean. We found that trophic niches varied according to complex interactions between environmental conditions, resource supply, and biotic pressures such as predation and competition. Our results highlighted a lower isotopic richness (i.e., shorter food chain length and niche width) in low and high SIC areas, suggesting homogeneity of resources and a low diversity of food items ingested by individuals. In contrast, a higher isotopic richness (i.e., broad niche) was observed in the moderate SIC area, implying higher heterogeneity in basal food sources and consumers using individual trophic niches. Finally, our findings suggested a lower isotopic redundancy in areas with high SIC compared to low and moderate SIC. Overall, our results support the idea that sea ice is an important driver of benthic food web dynamics and reinforce the urgent need for further investigations of declining sea ice cover impacts on Arctic food web functioning. |
author2 |
Biologie et Ecologie des Ecosystèmes Marins Profonds (BEEP) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Yunda-Guarin, Gustavo Michel, Loïc Roy, Virginie Friscourt, Noémie Gosselin, Michel Nozais, Christian Archambault, Philippe |
author_facet |
Yunda-Guarin, Gustavo Michel, Loïc Roy, Virginie Friscourt, Noémie Gosselin, Michel Nozais, Christian Archambault, Philippe |
author_sort |
Yunda-Guarin, Gustavo |
title |
Trophic ecology of epibenthic communities exposed to different sea-ice concentrations across the Canadian Arctic Ocean |
title_short |
Trophic ecology of epibenthic communities exposed to different sea-ice concentrations across the Canadian Arctic Ocean |
title_full |
Trophic ecology of epibenthic communities exposed to different sea-ice concentrations across the Canadian Arctic Ocean |
title_fullStr |
Trophic ecology of epibenthic communities exposed to different sea-ice concentrations across the Canadian Arctic Ocean |
title_full_unstemmed |
Trophic ecology of epibenthic communities exposed to different sea-ice concentrations across the Canadian Arctic Ocean |
title_sort |
trophic ecology of epibenthic communities exposed to different sea-ice concentrations across the canadian arctic ocean |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04204163 https://doi.org/10.1016/j.pocean.2023.103105 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Global warming Sea ice |
genre_facet |
Arctic Arctic Ocean Global warming Sea ice |
op_source |
ISSN: 0079-6611 Progress in Oceanography https://hal.science/hal-04204163 Progress in Oceanography, 2023, 217, 103105 (12p.). ⟨10.1016/j.pocean.2023.103105⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pocean.2023.103105 hal-04204163 https://hal.science/hal-04204163 doi:10.1016/j.pocean.2023.103105 |
op_doi |
https://doi.org/10.1016/j.pocean.2023.103105 |
container_title |
Progress in Oceanography |
container_volume |
217 |
container_start_page |
103105 |
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1790596202289430528 |