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Chastel O, Fort J, Ackerman JT, Albert C, Angelier F, Basu N, Blévin P, Brault-Favrou M, Bustnes JO, Bustamante P, Danielsen J, Descamps S, Dietz R, Erikstad KE, Eulaers I, Ezhov A, Fleishman AB, Gabrielsen GW, Gavrilo M, Gilchrist G, Gilg O, Gíslason S, Golubova E, Goutte A, Grémillet D, Hallgrimsson GT, Hansen ES, Hanssen SA, Hatch S, Huffeldt NP, Jakubas D, Jónsson JE, Kitaysky AS, Kolbeinsson Y, Krasnov Y, Letcher RJ, Linnebjerg JF, Mallory M, Merkel FR, Moe B, Montevecchi WJ, Mosbech A, Olsen B, Orben RA, Provencher JF, Ragnarsdottir SB, Reiertsen TK, Rojek N, Romano M, Søndergaard J, Strøm H, Takahashi A, Tartu S, Thórarinsson TL, Thiebot JB, Will AP, Wilson S, Wojczulanis-Jakubas K, Yannic G. Mercury contamination and potential health risks to Arctic seabirds and shorebirds. Sci Total Environ 2022; 844:156944. [PMID: 35752241 DOI: 10.1016/j.scitotenv.2022.156944] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 06/20/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
Since the last Arctic Monitoring and Assessment Programme (AMAP) effort to review biological effects of mercury (Hg) on Arctic biota in 2011 and 2018, there has been a considerable number of new Arctic bird studies. This review article provides contemporary Hg exposure and potential health risk for 36 Arctic seabird and shorebird species, representing a larger portion of the Arctic than during previous AMAP assessments now also including parts of the Russian Arctic. To assess risk to birds, we used Hg toxicity benchmarks established for blood and converted to egg, liver, and feather tissues. Several Arctic seabird populations showed Hg concentrations that exceeded toxicity benchmarks, with 50 % of individual birds exceeding the "no adverse health effect" level. In particular, 5 % of all studied birds were considered to be at moderate or higher risk to Hg toxicity. However, most seabirds (95 %) were generally at lower risk to Hg toxicity. The highest Hg contamination was observed in seabirds breeding in the western Atlantic and Pacific Oceans. Most Arctic shorebirds exhibited low Hg concentrations, with approximately 45 % of individuals categorized at no risk, 2.5 % at high risk category, and no individual at severe risk. Although the majority Arctic-breeding seabirds and shorebirds appeared at lower risk to Hg toxicity, recent studies have reported deleterious effects of Hg on some pituitary hormones, genotoxicity, and reproductive performance. Adult survival appeared unaffected by Hg exposure, although long-term banding studies incorporating Hg are still limited. Although Hg contamination across the Arctic is considered low for most bird species, Hg in combination with other stressors, including other contaminants, diseases, parasites, and climate change, may still cause adverse effects. Future investigations on the global impact of Hg on Arctic birds should be conducted within a multi-stressor framework. This information helps to address Article 22 (Effectiveness Evaluation) of the Minamata Convention on Mercury as a global pollutant.
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Affiliation(s)
- Olivier Chastel
- Centre d'Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS- La Rochelle Université, 79360 Villiers-en-Bois, France.
| | - Jérôme Fort
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 17000 La Rochelle, France.
| | - Joshua T Ackerman
- U.S. Geological Survey, Western Ecological Research Center, Dixon Field Station, 800 Business Park Drive, Suite D, Dixon, CA 95620, United States.
| | - Céline Albert
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 17000 La Rochelle, France
| | - Frédéric Angelier
- Centre d'Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS- La Rochelle Université, 79360 Villiers-en-Bois, France
| | - Niladri Basu
- McGill University, Faculty of Agriculture and Environmental Sciences, Montreal, QC H9X 3V9, Canada
| | | | - Maud Brault-Favrou
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 17000 La Rochelle, France
| | - Jan Ove Bustnes
- Norwegian Institute for Nature Research, FRAM Centre, 9296 Tromsø, Norway
| | - Paco Bustamante
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 17000 La Rochelle, France; Institut Universitaire de France (IUF), 75005 Paris, France
| | | | | | - Rune Dietz
- Department of Ecoscience, Aarhus University, 4000 Roskilde, Denmark
| | | | - Igor Eulaers
- Norwegian Polar Institute, Fram center, 9296 Tromsø, Norway; Department of Ecoscience, Aarhus University, 4000 Roskilde, Denmark
| | - Alexey Ezhov
- Murmansk Marine Biological Institute Russian Academy of Science, 183010 Vladimirskaya str. 17 Murmansk, Russia
| | - Abram B Fleishman
- Conservation Metrics, Inc., Santa Cruz, CA, United States of America
| | | | - Maria Gavrilo
- Arctic and Antarctic Research Institute, 199397 St. Petersburg, Russia
| | - Grant Gilchrist
- Environment and Climate Change Canada, National Wildlife Research Centre, 1125 Colonel By Drive, Raven Road, Carleton University, Ottawa, Ont., Canada K1A 0H3
| | - Olivier Gilg
- Laboratoire Chrono-environnement, UMR 6249, Université de Bourgogne Franche Comté, 25000 Besançon, France; Groupe de Recherche en Ecologie Arctique, 16 rue de Vernot, F-21440 Francheville, France
| | - Sindri Gíslason
- Southwest Iceland Nature Research Centre, Gardvegur 1, 245 Sudurnesjabaer, Iceland
| | - Elena Golubova
- Laboratory of Ornithology, Institute of Biological Problems of the North, RU-685000 Magadan, Portovaya Str., 18, Russia
| | - Aurélie Goutte
- EPHE, PSL Research University, UMR 7619 METIS, F-75005 Paris, France
| | - David Grémillet
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), UMR 5175 Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France,; Percy FitzPatrick Institute of African Ornithology, University of Cape Town, Rondebosch, South Africa
| | - Gunnar T Hallgrimsson
- Department of Life and Environmental Sciences, University of Iceland, 102 Reykjavik, Iceland
| | - Erpur S Hansen
- South Iceland Nature Research Centre, Ægisgata 2, 900 Vestmannaeyjar, Iceland
| | | | - Scott Hatch
- Institute for Seabird Research and Conservation, Anchorage, 99516-3185, AK, USA
| | - Nicholas P Huffeldt
- Department of Ecoscience, Aarhus University, 4000 Roskilde, Denmark; Greenland Institute of Natural Resources, 3900 Nuuk, Greenland
| | - Dariusz Jakubas
- Department of Vertebrate Ecology and Zoology, University of Gdansk, 80-308 Gdansk, Poland
| | - Jón Einar Jónsson
- University of Iceland's Research Center at Snæfellsnes, 340 Stykkishólmur, Iceland
| | - Alexander S Kitaysky
- University of Alaska Fairbanks, Institute of Arctic Biology, Department of Biology & Wildlife, Fairbanks, AK 99775-7000, United States of America
| | | | - Yuri Krasnov
- Murmansk Marine Biological Institute Russian Academy of Science, 183010 Vladimirskaya str. 17 Murmansk, Russia
| | - Robert J Letcher
- Environment and Climate Change Canada, National Wildlife Research Centre, 1125 Colonel By Drive, Raven Road, Carleton University, Ottawa, Ont., Canada K1A 0H3
| | | | - Mark Mallory
- Biology, Acadia University Wolfville, Nova Scotia B4P 2R6, Canada
| | - Flemming Ravn Merkel
- Department of Ecoscience, Aarhus University, 4000 Roskilde, Denmark; Greenland Institute of Natural Resources, 3900 Nuuk, Greenland
| | - Børge Moe
- Norwegian Institute for Nature Research, 7485 Trondheim, Norway
| | - William J Montevecchi
- Memorial Univerisity of Newfoundland and Labrador, St. John's, Newoundland A1C 3X9, Canada
| | - Anders Mosbech
- Department of Ecoscience, Aarhus University, 4000 Roskilde, Denmark
| | - Bergur Olsen
- Faroe Marine Reseaqrch Institute, Nóatún 1, FO-110 Tórshavn, Faroe Islands
| | - Rachael A Orben
- Department of Fisheries, Wildlife and Conservation Sciences, Oregon State University, Hatfield Marine Science Center, Newport, OR, USA
| | - Jennifer F Provencher
- Science & Technology Branch, Environment and Climate Change Canada, Ottawa, Ontario, Canada K1A 0H3
| | | | - Tone K Reiertsen
- Norwegian Institute for Nature Research, FRAM Centre, 9296 Tromsø, Norway
| | - Nora Rojek
- U.S. Fish and Wildlife Service, Alaska Maritime Wildlife Refuge, Homer, AK, USA
| | - Marc Romano
- U.S. Fish and Wildlife Service, Alaska Maritime Wildlife Refuge, Homer, AK, USA
| | - Jens Søndergaard
- Department of Ecoscience, Aarhus University, 4000 Roskilde, Denmark
| | - Hallvard Strøm
- Norwegian Polar Institute, Fram center, 9296 Tromsø, Norway
| | - Akinori Takahashi
- National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan
| | - Sabrina Tartu
- Centre d'Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS- La Rochelle Université, 79360 Villiers-en-Bois, France
| | | | - Jean-Baptiste Thiebot
- National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan
| | - Alexis P Will
- University of Alaska Fairbanks, Institute of Arctic Biology, Department of Biology & Wildlife, Fairbanks, AK 99775-7000, United States of America; National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan
| | - Simon Wilson
- Arctic Monitoring and Assessment Programme (AMAP) Secretariat, The Fram Centre, Box 6606, Stakkevollan, 9296, Tromsø, Norway
| | | | - Glenn Yannic
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, 38000 Grenoble, France
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Carravieri A, Vincze O, Bustamante P, Ackerman JT, Adams EM, Angelier F, Chastel O, Cherel Y, Gilg O, Golubova E, Kitaysky A, Luff K, Seewagen CL, Strøm H, Will AP, Yannic G, Giraudeau M, Fort J. Quantitative meta-analysis reveals no association between mercury contamination and body condition in birds. Biol Rev Camb Philos Soc 2022; 97:1253-1271. [PMID: 35174617 DOI: 10.1111/brv.12840] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 02/01/2022] [Accepted: 02/03/2022] [Indexed: 12/14/2022]
Abstract
Mercury contamination is a major threat to the global environment, and is still increasing in some regions despite international regulations. The methylated form of mercury is hazardous to biota, yet its sublethal effects are difficult to detect in wildlife. Body condition can vary in response to stressors, but previous studies have shown mixed effects of mercury on body condition in wildlife. Using birds as study organisms, we provide the first quantitative synthesis of the effect of mercury on body condition in animals. In addition, we explored the influence of intrinsic, extrinsic and methodological factors potentially explaining cross-study heterogeneity in results. We considered experimental and correlative studies carried out in adult birds and chicks, and mercury exposure inferred from blood and feathers. Most experimental investigations (90%) showed a significant relationship between mercury concentrations and body condition. Experimental exposure to mercury disrupted nutrient (fat) metabolism, metabolic rates, and food intake, resulting in either positive or negative associations with body condition. Correlative studies also showed either positive or negative associations, of which only 14% were statistically significant. Therefore, the overall effect of mercury concentrations on body condition was null in both experimental (estimate ± SE = 0.262 ± 0.309, 20 effect sizes, five species) and correlative studies (-0.011 ± 0.020, 315 effect sizes, 145 species). The single and interactive effects of age class and tissue type were accounted for in meta-analytic models of the correlative data set, since chicks and adults, as well as blood and feathers, are known to behave differently in terms of mercury accumulation and health effects. Of the 15 moderators tested, only wintering status explained cross-study heterogeneity in the correlative data set: free-ranging wintering birds were more likely to show a negative association between mercury and body condition. However, wintering effect sizes were limited to passerines, further studies should thus confirm this trend in other taxa. Collectively, our results suggest that (i) effects of mercury on body condition are weak and mostly detectable under controlled conditions, and (ii) body condition indices are unreliable indicators of mercury sublethal effects in the wild. Food availability, feeding rates and other sources of variation that are challenging to quantify likely confound the association between mercury and body condition in natura. Future studies could explore the metabolic effects of mercury further using designs that allow for the estimation and/or manipulation of food intake in both wild and captive birds, especially in under-represented life-history stages such as migration and overwintering.
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Affiliation(s)
- Alice Carravieri
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 rue Olympe de Gouges, La Rochelle, 17000, France
| | - Orsolya Vincze
- Centre for Ecological Research-DRI, Institute of Aquatic Ecology, 18/C Bem tér, Debrecen, 4026, Hungary.,Evolutionary Ecology Group, Hungarian Department of Biology and Ecology, Babeş-Bolyai University, 5-7 Clinicilor street, Cluj-Napoca, 400006, Romania
| | - Paco Bustamante
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 rue Olympe de Gouges, La Rochelle, 17000, France.,Institut Universitaire de France (IUF), 1 rue Descartes, Paris, 75005, France
| | - Joshua T Ackerman
- U.S. Geological Survey, Western Ecological Research Center, Dixon Field Station, 800 Business Park Drive, Suite D, Dixon, CA, 95620, U.S.A
| | - Evan M Adams
- Biodiversity Research Institute, 276 Canco Road, Portland, ME, 04103, U.S.A
| | - Frédéric Angelier
- Centre d'Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS-La Rochelle Université, 405 Route de Prissé la Charrière, Villiers-en-Bois, 79360, France
| | - Olivier Chastel
- Centre d'Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS-La Rochelle Université, 405 Route de Prissé la Charrière, Villiers-en-Bois, 79360, France
| | - Yves Cherel
- Centre d'Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS-La Rochelle Université, 405 Route de Prissé la Charrière, Villiers-en-Bois, 79360, France
| | - Olivier Gilg
- UMR 6249 CNRS-Chrono-environnement, Université de Bourgogne Franche-Comté, 16 route de Gray, Besançon, 25000, France.,Groupe de Recherche en Ecologie Arctique (GREA), 16 rue de Vernot, Francheville, 21440, France
| | - Elena Golubova
- Groupe de Recherche en Ecologie Arctique (GREA), 16 rue de Vernot, Francheville, 21440, France.,Institute of Biological Problems of the North, Russian Academy of Sciences, Portovaya Str., 18, Magadan, RU-685000, Russia
| | - Alexander Kitaysky
- Institute of Arctic Biology, University of Alaska Fairbanks, 2140 Koyukuk Drive, Fairbanks, AK, 99775, U.S.A
| | - Katelyn Luff
- Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, SK, S7N 5E2, Canada
| | - Chad L Seewagen
- Great Hollow Nature Preserve and Ecological Research Center, 225 State Route 37, New Fairfield, CT, 06812, U.S.A
| | - Hallvard Strøm
- Norwegian Polar Institute, Fram Centre, Tromsø, NO-9296, Norway
| | - Alexis P Will
- Institute of Arctic Biology, University of Alaska Fairbanks, 2140 Koyukuk Drive, Fairbanks, AK, 99775, U.S.A
| | - Glenn Yannic
- Groupe de Recherche en Ecologie Arctique (GREA), 16 rue de Vernot, Francheville, 21440, France.,UMR 5553 CNRS-Université Grenoble Alpes, Université Savoie Mont Blanc, 2233 Rue de la Piscine, Saint-Martin d'Hères, Grenoble, 38000, France
| | - Mathieu Giraudeau
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 rue Olympe de Gouges, La Rochelle, 17000, France.,Centre de Recherches en Écologie et en Évolution de la Santé (CREES), MIVEGEC, UMR IRD 224-CNRS 5290-Université de Montpellier, Domaine La Valette, 900 rue Breton, Montpellier, 34090, France
| | - Jérôme Fort
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 rue Olympe de Gouges, La Rochelle, 17000, France
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3
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Albert C, Helgason HH, Brault-Favrou M, Robertson GJ, Descamps S, Amélineau F, Danielsen J, Dietz R, Elliott K, Erikstad KE, Eulaers I, Ezhov A, Fitzsimmons MG, Gavrilo M, Golubova E, Grémillet D, Hatch S, Huffeldt NP, Jakubas D, Kitaysky A, Kolbeinsson Y, Krasnov Y, Lorentsen SH, Lorentzen E, Mallory ML, Merkel B, Merkel FR, Montevecchi W, Mosbech A, Olsen B, Orben RA, Patterson A, Provencher J, Plumejeaud C, Pratte I, Reiertsen TK, Renner H, Rojek N, Romano M, Strøm H, Systad GH, Takahashi A, Thiebot JB, Thórarinsson TL, Will AP, Wojczulanis-Jakubas K, Bustamante P, Fort J. Seasonal variation of mercury contamination in Arctic seabirds: A pan-Arctic assessment. Sci Total Environ 2021; 750:142201. [PMID: 33182207 DOI: 10.1016/j.scitotenv.2020.142201] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/19/2020] [Accepted: 09/02/2020] [Indexed: 06/11/2023]
Abstract
Mercury (Hg) is a natural trace element found in high concentrations in top predators, including Arctic seabirds. Most current knowledge about Hg concentrations in Arctic seabirds relates to exposure during the summer breeding period when researchers can easily access seabirds at colonies. However, the few studies focused on winter have shown higher Hg concentrations during the non-breeding period than breeding period in several tissues. Hence, improving knowledge about Hg exposure during the non-breeding period is crucial to understanding the threats and risks encountered by these species year-round. We used feathers of nine migratory alcid species occurring at high latitudes to study bird Hg exposure during both the breeding and non-breeding periods. Overall, Hg concentrations during the non-breeding period were ~3 times higher than during the breeding period. In addition, spatial differences were apparent within and between the Atlantic and Pacific regions. While Hg concentrations during the non-breeding period were ~9 times and ~3 times higher than during the breeding period for the West and East Atlantic respectively, Hg concentrations in the Pacific during the non-breeding period were only ~1.7 times higher than during the breeding period. In addition, individual Hg concentrations during the non-breeding period for most of the seabird colonies were above 5 μg g-1 dry weight (dw), which is considered to be the threshold at which deleterious effects are observed, suggesting that some breeding populations might be vulnerable to non-breeding Hg exposure. Since wintering area locations, and migration routes may influence seasonal Hg concentrations, it is crucial to improve our knowledge about spatial ecotoxicology to fully understand the risks associated with Hg contamination in Arctic seabirds.
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Affiliation(s)
- Céline Albert
- Littoral, Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 Rue Olympe de Gouges, FR-17000 La Rochelle, France.
| | - Hálfdán Helgi Helgason
- Norwegian Polar Institute, Framcentre, Hjalmar Johansens Gate 14, NO-9296 Tromsø, Norway
| | - Maud Brault-Favrou
- Littoral, Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 Rue Olympe de Gouges, FR-17000 La Rochelle, France
| | - Gregory J Robertson
- Wildlife Research Division, Environment Climate Change Canada, 6 Bruce Street, Mount Pearl, NL A1N 4T3, Canada
| | - Sébastien Descamps
- Norwegian Polar Institute, Framcentre, Hjalmar Johansens Gate 14, NO-9296 Tromsø, Norway
| | - Françoise Amélineau
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE) UMR 5175, CNRS - Université de Montpellier - Université Paul-Valéry Montpellier - EPHE, Montpellier, France
| | - Jóhannis Danielsen
- The Faroese Marine Research Institute, Nóatún 1, FO-100 Tórshavn, Faroe Islands
| | - Rune Dietz
- Aarhus University, Department of Bioscience, Arctic Research Centre (ARC), Frederiksborgvej 399, PO Box 358, DK-4000 Roskilde, Denmark
| | - Kyle Elliott
- Department of Natural Resource Sciences, McGill University, Ste Anne-de-Bellevue, QC H9X 3V9, Canada
| | - Kjell Einar Erikstad
- Norwegian Institute for Nature Research (NINA), FRAM - High North Research Centre for Climate and the Environment, PO Box 6606, Langnes, NO-9296, Tromsø, Norway
| | - Igor Eulaers
- Aarhus University, Department of Bioscience, Arctic Research Centre (ARC), Frederiksborgvej 399, PO Box 358, DK-4000 Roskilde, Denmark
| | - Alexey Ezhov
- Murmansk Marine Biological Institute, 17 Vladimirskaya street, 183010 Murmansk, Russia
| | - Michelle G Fitzsimmons
- Wildlife Research Division, Environment Climate Change Canada, 6 Bruce Street, Mount Pearl, NL A1N 4T3, Canada
| | - Maria Gavrilo
- Association Maritime Heritage, RU - 199106, Icebreaker "Krassin", The Lieutenant Schmidt emb., 23 Line, Saint-Petersburg, Russia; National Park Russian Arctic, RU-168000, Sovetskikh kosmonavtov ave., 57, Archangelsk, Russia
| | - Elena Golubova
- Laboratory of Ornithology, Institute of Biological Problems of the North, RU-685000 Magadan, Portovaya Str., 18, Russia
| | - David Grémillet
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE) UMR 5175, CNRS - Université de Montpellier - Université Paul-Valéry Montpellier - EPHE, Montpellier, France; FitzPatrick Institute of African Ornithology, UCT, Rondebosch 7701, South Africa; Centre d'Etudes Biologiques de Chizé (CEBC), UMR 7372-CNRS, La Rochelle Université, France
| | - Scott Hatch
- Institute for Seabird Research and Conservation, Anchorage 99516-3185, AK, USA
| | - Nicholas P Huffeldt
- Aarhus University, Department of Bioscience, Arctic Research Centre (ARC), Frederiksborgvej 399, PO Box 358, DK-4000 Roskilde, Denmark
| | - Dariusz Jakubas
- University of Gdańsk, Faculty of Biology, Dept. of Vertebrate Ecology and Zoology, Wita Stwosza 59, PL-80-308 Gdańsk, Poland
| | - Alexander Kitaysky
- Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
| | - Yann Kolbeinsson
- Northeast Iceland Nature Research Centre, Hafnarstétt 3, 640 Húsavík, Iceland
| | - Yuri Krasnov
- Murmansk Marine Biological Institute, 17 Vladimirskaya street, 183010 Murmansk, Russia
| | - Svein-Håkon Lorentsen
- Norwegian Institute for Nature Research (NINA), Høgskoleringen 9, NO-7034 Trondheim, Norway
| | - Erlend Lorentzen
- Norwegian Polar Institute, Framcentre, Hjalmar Johansens Gate 14, NO-9296 Tromsø, Norway
| | - Mark L Mallory
- Acadia University, 33 Westwood Avenue, Wolfville B4P 2R6, Nova Scotia, Canada
| | - Benjamin Merkel
- Norwegian Polar Institute, Framcentre, Hjalmar Johansens Gate 14, NO-9296 Tromsø, Norway
| | - Flemming Ravn Merkel
- Aarhus University, Department of Bioscience, Arctic Research Centre (ARC), Frederiksborgvej 399, PO Box 358, DK-4000 Roskilde, Denmark; Greenland Institute of Natural Resources, P.O. Box 570, 3900 Nuuk, Greenland
| | - William Montevecchi
- Psychology Department, Memorial University, St. John's, Newfoundland A1M 2Y8, Canada
| | - Anders Mosbech
- Aarhus University, Department of Bioscience, Arctic Research Centre (ARC), Frederiksborgvej 399, PO Box 358, DK-4000 Roskilde, Denmark
| | - Bergur Olsen
- The Faroese Marine Research Institute, Nóatún 1, FO-100 Tórshavn, Faroe Islands
| | - Rachael A Orben
- Department of Fisheries and Wildlife, Oregon State University, Hatfield Marine Science Center, 2030 SE Marine Science Dr., Newport, OR 97365, USA
| | - Allison Patterson
- Department of Natural Resource Sciences, McGill University, Ste Anne-de-Bellevue, QC H9X 3V9, Canada
| | - Jennifer Provencher
- Canadian Wildlife Service, Environment and Climate Change Canada, Place Vincent Massey, 351 St. Joseph Blvd, Hull, Quebec K1A 0H3, Canada
| | - Christine Plumejeaud
- Littoral, Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 Rue Olympe de Gouges, FR-17000 La Rochelle, France
| | - Isabeau Pratte
- Acadia University, 33 Westwood Avenue, Wolfville B4P 2R6, Nova Scotia, Canada
| | - Tone Kristin Reiertsen
- Norwegian Institute for Nature Research (NINA), FRAM - High North Research Centre for Climate and the Environment, PO Box 6606, Langnes, NO-9296, Tromsø, Norway
| | - Heather Renner
- U.S. Fish and Wildlife Service, Alaska Maritime Wildlife Refuge, Homer, AK, USA
| | - Nora Rojek
- U.S. Fish and Wildlife Service, Alaska Maritime Wildlife Refuge, Homer, AK, USA
| | - Marc Romano
- U.S. Fish and Wildlife Service, Alaska Maritime Wildlife Refuge, Homer, AK, USA
| | - Hallvard Strøm
- Norwegian Polar Institute, Framcentre, Hjalmar Johansens Gate 14, NO-9296 Tromsø, Norway
| | - Geir Helge Systad
- Norwegian Institute for Nature Research (NINA), Thormøhlensgate 55, N0-5006 Bergen, Norway
| | - Akinori Takahashi
- National Institute of Polar Research, 10-3, Midori-cho, Tachikawa, Tokyo 190-8518, Japan
| | - Jean-Baptiste Thiebot
- National Institute of Polar Research, 10-3, Midori-cho, Tachikawa, Tokyo 190-8518, Japan
| | | | - Alexis P Will
- Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
| | - Katarzyna Wojczulanis-Jakubas
- University of Gdańsk, Faculty of Biology, Dept. of Vertebrate Ecology and Zoology, Wita Stwosza 59, PL-80-308 Gdańsk, Poland
| | - Paco Bustamante
- Littoral, Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 Rue Olympe de Gouges, FR-17000 La Rochelle, France; Institut Universitaire de France (IUF), 1 rue Descartes, 75005 Paris, France
| | - Jérôme Fort
- Littoral, Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 Rue Olympe de Gouges, FR-17000 La Rochelle, France.
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