Deciphering the structure of the West Greenland marine food web using stable isotopes (δ13C, δ15N)
International audience The Arctic is facing major environmental changes impacting marine biodiversity and ecosystem functioning. One way of assessing the responses of an ecosystem to these changes is to quantitatively study food web dynamics. Here, we used stable isotope (δ15N and δ13C) analyses of...
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Online Access: | https://hal.science/hal-01426370 https://doi.org/10.1007/s00227-016-3001-0 |
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ftinsu:oai:HAL:hal-01426370v1 2023-05-15T14:50:25+02:00 Deciphering the structure of the West Greenland marine food web using stable isotopes (δ13C, δ15N) Linnebjerg, Jannie Hobson, Keith A. Fort, Jérôme Nielsen, Torkel, Møller, Per Wieland, Kai Rigét, Frank Mosbech, Anders Department of Biological Sciences, Aarhus University Environment and Climate Change Canada LIttoral ENvironnement et Sociétés - UMR 7266 (LIENSs) Institut national des sciences de l'Univers (INSU - CNRS)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Greenland Climate Research Centre Greenland Institute of Natural Resources (GINR) National Institute of Aquatic Resources Danmarks Tekniske Universitet = Technical University of Denmark (DTU) Kalundborg Municipality Department of Bioscience and Arctic Research Center Aarhus University Aarhus 2016-10-15 https://hal.science/hal-01426370 https://doi.org/10.1007/s00227-016-3001-0 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-016-3001-0 hal-01426370 https://hal.science/hal-01426370 doi:10.1007/s00227-016-3001-0 ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology https://hal.science/hal-01426370 Marine Biology, 2016, 163, ⟨10.1007/s00227-016-3001-0⟩ [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2016 ftinsu https://doi.org/10.1007/s00227-016-3001-0 2023-02-08T18:22:08Z International audience The Arctic is facing major environmental changes impacting marine biodiversity and ecosystem functioning. One way of assessing the responses of an ecosystem to these changes is to quantitatively study food web dynamics. Here, we used stable isotope (δ15N and δ13C) analyses of 39 Arctic marine species to investigate trophic relationships and isotopic niches of the West Greenland food web in 2000–2004. The lowest δ15N values were found for suspension feeding blue mussel (Mytilus edulis; 6.1 ‰) and the highest for polar bear (Ursus maritimus; 20.2 ‰). For δ13C, copepods (Calanus spp.) had the lowest values (−20.4 ‰) and snow crab (Chionoecetes opilio) the highest values (−15.8 ‰). Our results show that the three trophic enrichment factor (TEF) approaches used to quantify species trophic positions (fixed TEF of 3.8 and 3.4 ‰ or scaled TEF) did not generally affect trophic modelling and provided similar conclusions. Overall, the findings in this study are in good agreement with previous investigations of other Arctic marine ecosystems. Interestingly, we found little overlap of core isotopic niches used by the four investigated functional groups (mammals, seabirds, fish and invertebrates), except for seabirds and fish where an overlap of 24 % was found. These results provide new insights into species and functional group interactions, as well as into the food web structure and ecosystem functioning of an important Arctic region that can be used as a template to guide future modelling of carbon, energy and contaminant flow in the region. Article in Journal/Newspaper Arctic Chionoecetes opilio Greenland Snow crab Ursus maritimus Copepods Institut national des sciences de l'Univers: HAL-INSU Arctic Greenland Marine Biology 163 11 |
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Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology Linnebjerg, Jannie Hobson, Keith A. Fort, Jérôme Nielsen, Torkel, Møller, Per Wieland, Kai Rigét, Frank Mosbech, Anders Deciphering the structure of the West Greenland marine food web using stable isotopes (δ13C, δ15N) |
topic_facet |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience The Arctic is facing major environmental changes impacting marine biodiversity and ecosystem functioning. One way of assessing the responses of an ecosystem to these changes is to quantitatively study food web dynamics. Here, we used stable isotope (δ15N and δ13C) analyses of 39 Arctic marine species to investigate trophic relationships and isotopic niches of the West Greenland food web in 2000–2004. The lowest δ15N values were found for suspension feeding blue mussel (Mytilus edulis; 6.1 ‰) and the highest for polar bear (Ursus maritimus; 20.2 ‰). For δ13C, copepods (Calanus spp.) had the lowest values (−20.4 ‰) and snow crab (Chionoecetes opilio) the highest values (−15.8 ‰). Our results show that the three trophic enrichment factor (TEF) approaches used to quantify species trophic positions (fixed TEF of 3.8 and 3.4 ‰ or scaled TEF) did not generally affect trophic modelling and provided similar conclusions. Overall, the findings in this study are in good agreement with previous investigations of other Arctic marine ecosystems. Interestingly, we found little overlap of core isotopic niches used by the four investigated functional groups (mammals, seabirds, fish and invertebrates), except for seabirds and fish where an overlap of 24 % was found. These results provide new insights into species and functional group interactions, as well as into the food web structure and ecosystem functioning of an important Arctic region that can be used as a template to guide future modelling of carbon, energy and contaminant flow in the region. |
author2 |
Department of Biological Sciences, Aarhus University Environment and Climate Change Canada LIttoral ENvironnement et Sociétés - UMR 7266 (LIENSs) Institut national des sciences de l'Univers (INSU - CNRS)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Greenland Climate Research Centre Greenland Institute of Natural Resources (GINR) National Institute of Aquatic Resources Danmarks Tekniske Universitet = Technical University of Denmark (DTU) Kalundborg Municipality Department of Bioscience and Arctic Research Center Aarhus University Aarhus |
format |
Article in Journal/Newspaper |
author |
Linnebjerg, Jannie Hobson, Keith A. Fort, Jérôme Nielsen, Torkel, Møller, Per Wieland, Kai Rigét, Frank Mosbech, Anders |
author_facet |
Linnebjerg, Jannie Hobson, Keith A. Fort, Jérôme Nielsen, Torkel, Møller, Per Wieland, Kai Rigét, Frank Mosbech, Anders |
author_sort |
Linnebjerg, Jannie |
title |
Deciphering the structure of the West Greenland marine food web using stable isotopes (δ13C, δ15N) |
title_short |
Deciphering the structure of the West Greenland marine food web using stable isotopes (δ13C, δ15N) |
title_full |
Deciphering the structure of the West Greenland marine food web using stable isotopes (δ13C, δ15N) |
title_fullStr |
Deciphering the structure of the West Greenland marine food web using stable isotopes (δ13C, δ15N) |
title_full_unstemmed |
Deciphering the structure of the West Greenland marine food web using stable isotopes (δ13C, δ15N) |
title_sort |
deciphering the structure of the west greenland marine food web using stable isotopes (δ13c, δ15n) |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.science/hal-01426370 https://doi.org/10.1007/s00227-016-3001-0 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Chionoecetes opilio Greenland Snow crab Ursus maritimus Copepods |
genre_facet |
Arctic Chionoecetes opilio Greenland Snow crab Ursus maritimus Copepods |
op_source |
ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology https://hal.science/hal-01426370 Marine Biology, 2016, 163, ⟨10.1007/s00227-016-3001-0⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-016-3001-0 hal-01426370 https://hal.science/hal-01426370 doi:10.1007/s00227-016-3001-0 |
op_doi |
https://doi.org/10.1007/s00227-016-3001-0 |
container_title |
Marine Biology |
container_volume |
163 |
container_issue |
11 |
_version_ |
1766321454495825920 |