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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Online Access: | https://hdl.handle.net/10037/31527 https://doi.org/10.1016/j.ecolind.2023.110487 |
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ftunivtroemsoe:oai:munin.uit.no:10037/31527 2023-11-12T04:09:36+01:00 Macrofauna and meiofauna food-web structure from Arctic fjords to deep Arctic Ocean during spring: A stable isotope approach Oleszczuk, Barbara Silberberger, Marc Jürgen Grzelak, Katarzyna Winogradow, Aleksandra Dybwad, Christine Schumann Peeken, Ilka Wiedmann, Ingrid Kędra, Monika 2023-07-13 https://hdl.handle.net/10037/31527 https://doi.org/10.1016/j.ecolind.2023.110487 eng eng Elsevier Ecological Indicators info:eu-repo/grantAgreement/EC/H2020/869383/EU/Arctic biodiversity change and its consequences: Assessing, monitoring and predicting the effects of ecosystem tipping cascades on marine ecosystem services and dependent human systems/ECOTIP/ Oleszczuk, Silberberger, Grzelak, Winogradow, Dybwad, Peeken, Wiedmann, Kędra. Macrofauna and meiofauna food-web structure from Arctic fjords to deep Arctic Ocean during spring: A stable isotope approach. Ecological Indicators. 2023;154 FRIDAID 2177191 doi:10.1016/j.ecolind.2023.110487 1470-160X 1872-7034 https://hdl.handle.net/10037/31527 Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) openAccess Copyright 2023 The Author(s) https://creativecommons.org/licenses/by-nc-nd/4.0 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2023 ftunivtroemsoe https://doi.org/10.1016/j.ecolind.2023.110487 2023-10-18T23:07:50Z 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 Arctic Ocean University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Ecological Indicators 154 110487 |
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Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
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 Jürgen Grzelak, Katarzyna Winogradow, Aleksandra Dybwad, Christine Schumann Peeken, Ilka Wiedmann, Ingrid Kędra, Monika |
spellingShingle |
Oleszczuk, Barbara Silberberger, Marc Jürgen Grzelak, Katarzyna Winogradow, Aleksandra Dybwad, Christine Schumann 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 Jürgen Grzelak, Katarzyna Winogradow, Aleksandra Dybwad, Christine Schumann 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 |
Elsevier |
publishDate |
2023 |
url |
https://hdl.handle.net/10037/31527 https://doi.org/10.1016/j.ecolind.2023.110487 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Arctic Ocean |
op_relation |
Ecological Indicators info:eu-repo/grantAgreement/EC/H2020/869383/EU/Arctic biodiversity change and its consequences: Assessing, monitoring and predicting the effects of ecosystem tipping cascades on marine ecosystem services and dependent human systems/ECOTIP/ Oleszczuk, Silberberger, Grzelak, Winogradow, Dybwad, Peeken, Wiedmann, Kędra. Macrofauna and meiofauna food-web structure from Arctic fjords to deep Arctic Ocean during spring: A stable isotope approach. Ecological Indicators. 2023;154 FRIDAID 2177191 doi:10.1016/j.ecolind.2023.110487 1470-160X 1872-7034 https://hdl.handle.net/10037/31527 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) openAccess Copyright 2023 The Author(s) https://creativecommons.org/licenses/by-nc-nd/4.0 |
op_doi |
https://doi.org/10.1016/j.ecolind.2023.110487 |
container_title |
Ecological Indicators |
container_volume |
154 |
container_start_page |
110487 |
_version_ |
1782329525872361472 |