Macrofauna and meiofauna food-web structure from Arctic fjords to deep Arctic Ocean during spring: A stable isotope approach
The knowledge on benthic trophic relations is particularly important for understanding the functioning of still pristine and less studied Arctic Ocean ecosystems. This study examines the benthic food-web structure in the European sector of the Arctic Ocean and assesses if and how it differs along de...
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ftzenodo:oai:zenodo.org:8153606 2024-09-15T17:50:01+00:00 Macrofauna and meiofauna food-web structure from Arctic fjords to deep Arctic Ocean during spring: A stable isotope approach Oleszczuk Barbara Silberberger Marc J. Grzelak Katarzyna Winogradow Aleksandra Dybwad Christine Peeken Ilka Wiedmann Ingrid Kędra Monika 2023-07-13 https://doi.org/10.1016/j.ecolind.2023.110487 eng eng Zenodo https://zenodo.org/communities/ecotip-arctic https://zenodo.org/communities/eu https://doi.org/10.1016/j.ecolind.2023.110487 oai:zenodo.org:8153606 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode info:eu-repo/semantics/article 2023 ftzenodo https://doi.org/10.1016/j.ecolind.2023.110487 2024-07-26T06:12:32Z The knowledge on benthic trophic relations is particularly important for understanding the functioning of still pristine and less studied Arctic Ocean ecosystems. This study examines the benthic food-web structure in the European sector of the Arctic Ocean and assesses if and how it differs along depth gradients in the marginal seaice zone during spring. Samples of the sediment organic matter were collected in May/June 2015 and May 2016 at stations representing different sedimentary habitats (fjord, shelf, slope/basin), and stable isotopes of δ 13 C and δ 15 N were used to determine macro- and meiofauna food-web structure. Our results show that the food-web structure differed both among the three studied habitat types and between macro- and meiofauna components of benthic communities, and that these differences were related to the quality and quantity of organic matter. Meiofauna in fjords and on the shelf mainly relied on the reworked sediment organic matter while macrofauna utilized more fresh organic matter, sedimenting to the sea floor. In fjords and on the shelf, benthos displayed a high degree of omnivory and non-selective feeding while on the slope and in deep basins feeding on higher trophic levels dominated. In the latter, benthos seemed also to have utilized highly reworked organic matter. As the organic matter quantity and quality were major drivers of trophic relations in all studied areas, the benthic food webs will likely face cascading effects following the modification of pelagic food webs due to climatic changes. Article in Journal/Newspaper Arctic Arctic Ocean Zenodo Ecological Indicators 154 110487 |
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English |
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The knowledge on benthic trophic relations is particularly important for understanding the functioning of still pristine and less studied Arctic Ocean ecosystems. This study examines the benthic food-web structure in the European sector of the Arctic Ocean and assesses if and how it differs along depth gradients in the marginal seaice zone during spring. Samples of the sediment organic matter were collected in May/June 2015 and May 2016 at stations representing different sedimentary habitats (fjord, shelf, slope/basin), and stable isotopes of δ 13 C and δ 15 N were used to determine macro- and meiofauna food-web structure. Our results show that the food-web structure differed both among the three studied habitat types and between macro- and meiofauna components of benthic communities, and that these differences were related to the quality and quantity of organic matter. Meiofauna in fjords and on the shelf mainly relied on the reworked sediment organic matter while macrofauna utilized more fresh organic matter, sedimenting to the sea floor. In fjords and on the shelf, benthos displayed a high degree of omnivory and non-selective feeding while on the slope and in deep basins feeding on higher trophic levels dominated. In the latter, benthos seemed also to have utilized highly reworked organic matter. As the organic matter quantity and quality were major drivers of trophic relations in all studied areas, the benthic food webs will likely face cascading effects following the modification of pelagic food webs due to climatic changes. |
format |
Article in Journal/Newspaper |
author |
Oleszczuk Barbara Silberberger Marc J. Grzelak Katarzyna Winogradow Aleksandra Dybwad Christine Peeken Ilka Wiedmann Ingrid Kędra Monika |
spellingShingle |
Oleszczuk Barbara Silberberger Marc J. Grzelak Katarzyna Winogradow Aleksandra Dybwad Christine Peeken Ilka Wiedmann Ingrid Kędra Monika Macrofauna and meiofauna food-web structure from Arctic fjords to deep Arctic Ocean during spring: A stable isotope approach |
author_facet |
Oleszczuk Barbara Silberberger Marc J. Grzelak Katarzyna Winogradow Aleksandra Dybwad Christine Peeken Ilka Wiedmann Ingrid Kędra Monika |
author_sort |
Oleszczuk Barbara |
title |
Macrofauna and meiofauna food-web structure from Arctic fjords to deep Arctic Ocean during spring: A stable isotope approach |
title_short |
Macrofauna and meiofauna food-web structure from Arctic fjords to deep Arctic Ocean during spring: A stable isotope approach |
title_full |
Macrofauna and meiofauna food-web structure from Arctic fjords to deep Arctic Ocean during spring: A stable isotope approach |
title_fullStr |
Macrofauna and meiofauna food-web structure from Arctic fjords to deep Arctic Ocean during spring: A stable isotope approach |
title_full_unstemmed |
Macrofauna and meiofauna food-web structure from Arctic fjords to deep Arctic Ocean during spring: A stable isotope approach |
title_sort |
macrofauna and meiofauna food-web structure from arctic fjords to deep arctic ocean during spring: a stable isotope approach |
publisher |
Zenodo |
publishDate |
2023 |
url |
https://doi.org/10.1016/j.ecolind.2023.110487 |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_relation |
https://zenodo.org/communities/ecotip-arctic https://zenodo.org/communities/eu https://doi.org/10.1016/j.ecolind.2023.110487 oai:zenodo.org:8153606 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.1016/j.ecolind.2023.110487 |
container_title |
Ecological Indicators |
container_volume |
154 |
container_start_page |
110487 |
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1810291863388684288 |