DataSheet_1_Chemosynthetic and photosynthetic trophic support from cold seeps in Arctic benthic communities.docx
Benthic communities below the photic zone are largely reliant on the export of surface-water primary production and the flux of partially degraded organic matter to the seabed, i.e. pelagic−benthic coupling. Over the past decades, however, the role of chemosynthetically produced carbon in food webs...
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ftfrontimediafig:oai:figshare.com:article/20510286 2024-09-15T17:57:54+00:00 DataSheet_1_Chemosynthetic and photosynthetic trophic support from cold seeps in Arctic benthic communities.docx Emmelie K. L. Åström Bodil A. Bluhm Tine L. Rasmussen 2022-08-18T13:47:05Z https://doi.org/10.3389/fmars.2022.910558.s001 https://figshare.com/articles/dataset/DataSheet_1_Chemosynthetic_and_photosynthetic_trophic_support_from_cold_seeps_in_Arctic_benthic_communities_docx/20510286 unknown doi:10.3389/fmars.2022.910558.s001 https://figshare.com/articles/dataset/DataSheet_1_Chemosynthetic_and_photosynthetic_trophic_support_from_cold_seeps_in_Arctic_benthic_communities_docx/20510286 CC BY 4.0 Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering methane chemosynthesis food web benthos Svalbard Dataset 2022 ftfrontimediafig https://doi.org/10.3389/fmars.2022.910558.s001 2024-08-19T06:19:48Z Benthic communities below the photic zone are largely reliant on the export of surface-water primary production and the flux of partially degraded organic matter to the seabed, i.e. pelagic−benthic coupling. Over the past decades, however, the role of chemosynthetically produced carbon in food webs has been recognized in various habitats. Cold seeps are now known to be widespread across circumpolar Arctic shelves where natural release of hydrocarbons occurs at the seabed. Here, we investigated to what extent chemosynthesis-based carbon (CBC) enters the food web in a high latitude shelf-system. Specifically, we estimated the contributions of chemosynthesis-based carbon to primarily benthic invertebrate taxa from seeps at both shallow and deeper shelves and comparative non-seep areas in the Svalbard-Barents Sea region using bulk stable isotope-analysis of carbon and nitrogen. Our results show low δ 13 C values (-51.3 to -32.7 ‰) in chemosymbiotic siboglinids and several species of benthic, higher-trophic level, invertebrates (mainly polychaetes and echinoderms; -35.0 to -26.1‰) collected at cold seeps, consistent with assimilation of chemosynthesis-based carbon into the Arctic benthic food web. Using a two-component mixing equation, we demonstrate that certain species could derive more than 50% of their carbon from chemosynthesis-based carbon. These findings show that autochthonous chemosynthetic energy sources can contribute to supporting distinct groups of ‘background’ benthic taxa at these Arctic seep-habitats beyond microbial associations and chemosymbiotic species. Furthermore, we found a higher degree of chemosynthesis-based carbon in benthos at the deeper Barents Sea shelf seeps (>330 m) compared to seeps at the Western Svalbard shelf (<150 m water-depth), and we suggest this result reflects the differences in depth range, surface production and pelagic-benthic coupling. We detected large intra-species variations in carbon signatures within and across geographical locations and, combined with isotopic ... Dataset Barents Sea Svalbard Frontiers: Figshare |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering methane chemosynthesis food web benthos Svalbard |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering methane chemosynthesis food web benthos Svalbard Emmelie K. L. Åström Bodil A. Bluhm Tine L. Rasmussen DataSheet_1_Chemosynthetic and photosynthetic trophic support from cold seeps in Arctic benthic communities.docx |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering methane chemosynthesis food web benthos Svalbard |
description |
Benthic communities below the photic zone are largely reliant on the export of surface-water primary production and the flux of partially degraded organic matter to the seabed, i.e. pelagic−benthic coupling. Over the past decades, however, the role of chemosynthetically produced carbon in food webs has been recognized in various habitats. Cold seeps are now known to be widespread across circumpolar Arctic shelves where natural release of hydrocarbons occurs at the seabed. Here, we investigated to what extent chemosynthesis-based carbon (CBC) enters the food web in a high latitude shelf-system. Specifically, we estimated the contributions of chemosynthesis-based carbon to primarily benthic invertebrate taxa from seeps at both shallow and deeper shelves and comparative non-seep areas in the Svalbard-Barents Sea region using bulk stable isotope-analysis of carbon and nitrogen. Our results show low δ 13 C values (-51.3 to -32.7 ‰) in chemosymbiotic siboglinids and several species of benthic, higher-trophic level, invertebrates (mainly polychaetes and echinoderms; -35.0 to -26.1‰) collected at cold seeps, consistent with assimilation of chemosynthesis-based carbon into the Arctic benthic food web. Using a two-component mixing equation, we demonstrate that certain species could derive more than 50% of their carbon from chemosynthesis-based carbon. These findings show that autochthonous chemosynthetic energy sources can contribute to supporting distinct groups of ‘background’ benthic taxa at these Arctic seep-habitats beyond microbial associations and chemosymbiotic species. Furthermore, we found a higher degree of chemosynthesis-based carbon in benthos at the deeper Barents Sea shelf seeps (>330 m) compared to seeps at the Western Svalbard shelf (<150 m water-depth), and we suggest this result reflects the differences in depth range, surface production and pelagic-benthic coupling. We detected large intra-species variations in carbon signatures within and across geographical locations and, combined with isotopic ... |
format |
Dataset |
author |
Emmelie K. L. Åström Bodil A. Bluhm Tine L. Rasmussen |
author_facet |
Emmelie K. L. Åström Bodil A. Bluhm Tine L. Rasmussen |
author_sort |
Emmelie K. L. Åström |
title |
DataSheet_1_Chemosynthetic and photosynthetic trophic support from cold seeps in Arctic benthic communities.docx |
title_short |
DataSheet_1_Chemosynthetic and photosynthetic trophic support from cold seeps in Arctic benthic communities.docx |
title_full |
DataSheet_1_Chemosynthetic and photosynthetic trophic support from cold seeps in Arctic benthic communities.docx |
title_fullStr |
DataSheet_1_Chemosynthetic and photosynthetic trophic support from cold seeps in Arctic benthic communities.docx |
title_full_unstemmed |
DataSheet_1_Chemosynthetic and photosynthetic trophic support from cold seeps in Arctic benthic communities.docx |
title_sort |
datasheet_1_chemosynthetic and photosynthetic trophic support from cold seeps in arctic benthic communities.docx |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmars.2022.910558.s001 https://figshare.com/articles/dataset/DataSheet_1_Chemosynthetic_and_photosynthetic_trophic_support_from_cold_seeps_in_Arctic_benthic_communities_docx/20510286 |
genre |
Barents Sea Svalbard |
genre_facet |
Barents Sea Svalbard |
op_relation |
doi:10.3389/fmars.2022.910558.s001 https://figshare.com/articles/dataset/DataSheet_1_Chemosynthetic_and_photosynthetic_trophic_support_from_cold_seeps_in_Arctic_benthic_communities_docx/20510286 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.3389/fmars.2022.910558.s001 |
_version_ |
1810434121573335040 |