Niches of marine mammals in the European Arctic
The Arctic is warming rapidly, with concomitant sea ice losses and ecosystem changes. The animals most vulnerable to Arctic food web changes are long-lived and slow-growing such as marine mammals, which may not be able to adapt rapidly enough to respond to changes in their resource bases. To determi...
Published in: | Ecological Indicators |
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Online Access: | https://hal.science/hal-04203735 https://doi.org/10.1016/j.ecolind.2022.108661 |
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ftccsdartic:oai:HAL:hal-04203735v1 2023-10-09T21:48:01+02:00 Niches of marine mammals in the European Arctic Mackenzie, Kirsteen Lydersen, C. Haug, T. Routti, H. Aars, J. Andvik, C.M. Borgå, K. Fisk, A.T. Meier, S. Biuw, M. Lowther, A.D. Lindstrøm, U. Kovacs, K.M. Laboratoire Ressources halieutiques Boulogne sur mer (LRHBL) Halieutique Manche Mer du Nord (HMMN) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) 2022-03 https://hal.science/hal-04203735 https://doi.org/10.1016/j.ecolind.2022.108661 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecolind.2022.108661 hal-04203735 https://hal.science/hal-04203735 doi:10.1016/j.ecolind.2022.108661 ISSN: 1470-160X EISSN: 1872-7034 Ecological Indicators https://hal.science/hal-04203735 Ecological Indicators, 2022, 136, 108661 (9p.). ⟨10.1016/j.ecolind.2022.108661⟩ [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2022 ftccsdartic https://doi.org/10.1016/j.ecolind.2022.108661 2023-09-23T22:52:50Z The Arctic is warming rapidly, with concomitant sea ice losses and ecosystem changes. The animals most vulnerable to Arctic food web changes are long-lived and slow-growing such as marine mammals, which may not be able to adapt rapidly enough to respond to changes in their resource bases. To determine the current extent and sources of these resource bases, we examined isotopic and trophic niches for marine mammals in the European Arctic using skin carbon (δ13C) and nitrogen (δ 15N) stable isotope (SI) compositions from 10 species: blue, fin, humpback, minke, sperm and white whales, bearded and ringed seals, walruses and polar bears, and dietary fatty acids (FAs) in polar bears, walruses and most of the whale species listed here. SI values showed clear species separation by trophic behaviour and carbon sources. Bearded seals, walruses and white whales had the smallest isotopic niches; these species are all resident High Arctic species and are likely to be particularly vulnerable to changes in Arctic ecosystems. We found clear separation between FA groupings driven by pelagic, benthic and planktonic/algal sources: pelagic FAs in all whales, benthic FAs in walruses, and copepod/algae/dinoflagellate FAs in polar bears, with some polar bear compositions approaching those of the whales and walruses. There is strong niche partitioning between study species with minimal functional redundancy, which could impact Arctic ecosystem structure and connectivity if populations of these large nutrient vectors are reduced or lost. Article in Journal/Newspaper Arctic polar bear Sea ice walrus* Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Ecological Indicators 136 108661 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDV]Life Sciences [q-bio] |
spellingShingle |
[SDV]Life Sciences [q-bio] Mackenzie, Kirsteen Lydersen, C. Haug, T. Routti, H. Aars, J. Andvik, C.M. Borgå, K. Fisk, A.T. Meier, S. Biuw, M. Lowther, A.D. Lindstrøm, U. Kovacs, K.M. Niches of marine mammals in the European Arctic |
topic_facet |
[SDV]Life Sciences [q-bio] |
description |
The Arctic is warming rapidly, with concomitant sea ice losses and ecosystem changes. The animals most vulnerable to Arctic food web changes are long-lived and slow-growing such as marine mammals, which may not be able to adapt rapidly enough to respond to changes in their resource bases. To determine the current extent and sources of these resource bases, we examined isotopic and trophic niches for marine mammals in the European Arctic using skin carbon (δ13C) and nitrogen (δ 15N) stable isotope (SI) compositions from 10 species: blue, fin, humpback, minke, sperm and white whales, bearded and ringed seals, walruses and polar bears, and dietary fatty acids (FAs) in polar bears, walruses and most of the whale species listed here. SI values showed clear species separation by trophic behaviour and carbon sources. Bearded seals, walruses and white whales had the smallest isotopic niches; these species are all resident High Arctic species and are likely to be particularly vulnerable to changes in Arctic ecosystems. We found clear separation between FA groupings driven by pelagic, benthic and planktonic/algal sources: pelagic FAs in all whales, benthic FAs in walruses, and copepod/algae/dinoflagellate FAs in polar bears, with some polar bear compositions approaching those of the whales and walruses. There is strong niche partitioning between study species with minimal functional redundancy, which could impact Arctic ecosystem structure and connectivity if populations of these large nutrient vectors are reduced or lost. |
author2 |
Laboratoire Ressources halieutiques Boulogne sur mer (LRHBL) Halieutique Manche Mer du Nord (HMMN) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) |
format |
Article in Journal/Newspaper |
author |
Mackenzie, Kirsteen Lydersen, C. Haug, T. Routti, H. Aars, J. Andvik, C.M. Borgå, K. Fisk, A.T. Meier, S. Biuw, M. Lowther, A.D. Lindstrøm, U. Kovacs, K.M. |
author_facet |
Mackenzie, Kirsteen Lydersen, C. Haug, T. Routti, H. Aars, J. Andvik, C.M. Borgå, K. Fisk, A.T. Meier, S. Biuw, M. Lowther, A.D. Lindstrøm, U. Kovacs, K.M. |
author_sort |
Mackenzie, Kirsteen |
title |
Niches of marine mammals in the European Arctic |
title_short |
Niches of marine mammals in the European Arctic |
title_full |
Niches of marine mammals in the European Arctic |
title_fullStr |
Niches of marine mammals in the European Arctic |
title_full_unstemmed |
Niches of marine mammals in the European Arctic |
title_sort |
niches of marine mammals in the european arctic |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-04203735 https://doi.org/10.1016/j.ecolind.2022.108661 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic polar bear Sea ice walrus* |
genre_facet |
Arctic polar bear Sea ice walrus* |
op_source |
ISSN: 1470-160X EISSN: 1872-7034 Ecological Indicators https://hal.science/hal-04203735 Ecological Indicators, 2022, 136, 108661 (9p.). ⟨10.1016/j.ecolind.2022.108661⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecolind.2022.108661 hal-04203735 https://hal.science/hal-04203735 doi:10.1016/j.ecolind.2022.108661 |
op_doi |
https://doi.org/10.1016/j.ecolind.2022.108661 |
container_title |
Ecological Indicators |
container_volume |
136 |
container_start_page |
108661 |
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1779311041867415552 |