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Kellner FL, Le Moullec M, Ellegaard MR, Rosvold J, Peeters B, Burnett HA, Pedersen ÅØ, Brealey JC, Dussex N, Bieker VC, Hansen BB, Martin MD. A palaeogenomic investigation of overharvest implications in an endemic wild reindeer subspecies. Mol Ecol 2024; 33:e17274. [PMID: 38279681 DOI: 10.1111/mec.17274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 12/11/2023] [Accepted: 01/09/2024] [Indexed: 01/28/2024]
Abstract
Overharvest can severely reduce the abundance and distribution of a species and thereby impact its genetic diversity and threaten its future viability. Overharvest remains an ongoing issue for Arctic mammals, which due to climate change now also confront one of the fastest changing environments on Earth. The high-arctic Svalbard reindeer (Rangifer tarandus platyrhynchus), endemic to Svalbard, experienced a harvest-induced demographic bottleneck that occurred during the 17-20th centuries. Here, we investigate changes in genetic diversity, population structure, and gene-specific differentiation during and after this overharvesting event. Using whole-genome shotgun sequencing, we generated the first ancient and historical nuclear (n = 11) and mitochondrial (n = 18) genomes from Svalbard reindeer (up to 4000 BP) and integrated these data with a large collection of modern genome sequences (n = 90) to infer temporal changes. We show that hunting resulted in major genetic changes and restructuring in reindeer populations. Near-extirpation followed by pronounced genetic drift has altered the allele frequencies of important genes contributing to diverse biological functions. Median heterozygosity was reduced by 26%, while the mitochondrial genetic diversity was reduced only to a limited extent, likely due to already low pre-harvest diversity and a complex post-harvest recolonization process. Such genomic erosion and genetic isolation of populations due to past anthropogenic disturbance will likely play a major role in metapopulation dynamics (i.e., extirpation, recolonization) under further climate change. Our results from a high-arctic case study therefore emphasize the need to understand the long-term interplay of past, current, and future stressors in wildlife conservation.
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Affiliation(s)
- Fabian L Kellner
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
- Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Mathilde Le Moullec
- Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
- Department of Mammals and Birds, Greenland Institute of Natural Resources (GINR), Nuuk, Greenland
| | - Martin R Ellegaard
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Jørgen Rosvold
- Department of Terrestrial Biodiversity, Norwegian Institute for Nature Research (NINA), Trondheim, Norway
| | - Bart Peeters
- Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Hamish A Burnett
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
- Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | | | - Jaelle C Brealey
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Nicolas Dussex
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Vanessa C Bieker
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Brage B Hansen
- Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
- Department of Terrestrial Ecology, Norwegian Institute for Nature Research (NINA), Trondheim, Norway
| | - Michael D Martin
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
- Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
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Burnett HA, Bieker VC, Le Moullec M, Peeters B, Rosvold J, Pedersen ÅØ, Dalén L, Loe LE, Jensen H, Hansen BB, Martin MD. Contrasting genomic consequences of anthropogenic reintroduction and natural recolonization in high-arctic wild reindeer. Evol Appl 2023; 16:1531-1548. [PMID: 37752961 PMCID: PMC10519417 DOI: 10.1111/eva.13585] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 07/27/2023] [Accepted: 08/01/2023] [Indexed: 09/28/2023] Open
Abstract
Anthropogenic reintroduction can supplement natural recolonization in reestablishing a species' distribution and abundance. However, both reintroductions and recolonizations can give rise to founder effects that reduce genetic diversity and increase inbreeding, potentially causing the accumulation of genetic load and reduced fitness. Most current populations of the endemic high-arctic Svalbard reindeer (Rangifer tarandus platyrhynchus) originate from recent reintroductions or recolonizations following regional extirpations due to past overharvesting. We investigated and compared the genomic consequences of these two paths to reestablishment using whole-genome shotgun sequencing of 100 Svalbard reindeer across their range. We found little admixture between reintroduced and natural populations. Two reintroduced populations, each founded by 12 individuals around four decades (i.e. 8 reindeer generations) ago, formed two distinct genetic clusters. Compared to the source population, these populations showed only small decreases in genome-wide heterozygosity and increases in inbreeding and lengths of runs of homozygosity. In contrast, the two naturally recolonized populations without admixture possessed much lower heterozygosity, higher inbreeding and longer runs of homozygosity, possibly caused by serial population founder effects and/or fewer or more genetically related founders than in the reintroduction events. Naturally recolonized populations can thus be more vulnerable to the accumulation of genetic load than reintroduced populations. This suggests that in some organisms even small-scale reintroduction programs based on genetically diverse source populations can be more effective than natural recolonization in establishing genetically diverse populations. These findings warrant particular attention in the conservation and management of populations and species threatened by habitat fragmentation and loss.
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Affiliation(s)
- Hamish A. Burnett
- Centre for Biodiversity Dynamics, Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
- Department of Natural History, NTNU University MuseumNorwegian University of Science and Technology (NTNU)TrondheimNorway
| | - Vanessa C. Bieker
- Centre for Biodiversity Dynamics, Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
- Department of Natural History, NTNU University MuseumNorwegian University of Science and Technology (NTNU)TrondheimNorway
| | - Mathilde Le Moullec
- Centre for Biodiversity Dynamics, Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
| | - Bart Peeters
- Centre for Biodiversity Dynamics, Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
| | - Jørgen Rosvold
- Department of Terrestrial BiodiversityNorwegian Institute for Nature Research (NINA)TrondheimNorway
| | | | - Love Dalén
- Centre for PalaeogeneticsStockholmSweden
- Department of Bioinformatics and GeneticsSwedish Museum of Natural HistoryStockholmSweden
- Department of ZoologyStockholm UniversityStockholmSweden
| | - Leif Egil Loe
- Faculty of Environmental Sciences and Natural Resource ManagementNorwegian University of Life SciencesAasNorway
| | - Henrik Jensen
- Centre for Biodiversity Dynamics, Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
| | - Brage B. Hansen
- Centre for Biodiversity Dynamics, Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
- Department of Terrestrial EcologyNorwegian Institute for Nature Research (NINA)TrondheimNorway
| | - Michael D. Martin
- Centre for Biodiversity Dynamics, Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
- Department of Natural History, NTNU University MuseumNorwegian University of Science and Technology (NTNU)TrondheimNorway
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3
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Affiliation(s)
| | - Larissa T. Beumer
- Fram Centre Norwegian Polar Institute Tromsø 9296 Norway
- Department of Bioscience Aarhus University Roskilde 4000 Denmark
| | - Ronny Aanes
- Fram Centre Norwegian Polar Institute Tromsø 9296 Norway
| | - Brage B. Hansen
- Norwegian Institute for Nature Research Trondheim 7485 Norway
- Department of Biology Centre for Biodiversity Dynamics Norwegian University of Science and Technology Trondheim 7491 Norway
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4
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Garfelt-Paulsen IM, Soininen EM, Ravolainen V, Loe LE, Hansen BB, Irvine RJ, Stien A, Ropstad E, Veiberg V, Fuglei E, Pedersen ÅØ. Don't go chasing the ghosts of the past: habitat selection and site fidelity during calving in an Arctic ungulate. Wildlife Biology 2021. [DOI: 10.2981/wlb.00740] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Ingrid M. Garfelt-Paulsen
- I. M. Garfelt-Paulsen, V. Ravolainen, E. Fuglei and Å. Ø. Pedersen (https://orcid.org/0000-0001-9388-7402) ✉ , Norwegian Polar Inst., Fram Centre, Tromsø, Norway
| | - Eeva M. Soininen
- E. M. Soininen, UiT – Arctic Univ. of Norway, Dept of Arctic and Marine Biology, Tromsø, Norway
| | - Virve Ravolainen
- I. M. Garfelt-Paulsen, V. Ravolainen, E. Fuglei and Å. Ø. Pedersen (https://orcid.org/0000-0001-9388-7402) ✉ , Norwegian Polar Inst., Fram Centre, Tromsø, Norway
| | - Leif Egil Loe
- L. E. Loe, Norwegian Univ. for Life Sciences, Faculty of Environmental Sciences and Natural Resource Management, Ås, Norway
| | - Brage B. Hansen
- B. B. Hansen, Centre for Biodiversity Dynamics, Dept of Biology, Norwegian Univ. of Science and Technology, Trondheim, Norway
| | - R. Justin Irvine
- R. J. Irvine, The James Hutton Inst., Craigiebuckler, Aberdeen, Scotland, UK, and: Frankfurt Zoological Society, Addis Ababa, Ethiopia
| | - Audun Stien
- A. Stien, Norwegian Inst. for Nature Research, Fram Centre, Tromsø, Norway
| | - Erik Ropstad
- E. Ropstad, Norwegian Univ. for Life Sciences, Faculty of Veterinary Medicine, Oslo, Norway
| | - Vebjørn Veiberg
- V. Veiberg, Norwegian Inst. for Nature Research, Trondheim, Norway
| | - Eva Fuglei
- I. M. Garfelt-Paulsen, V. Ravolainen, E. Fuglei and Å. Ø. Pedersen (https://orcid.org/0000-0001-9388-7402) ✉ , Norwegian Polar Inst., Fram Centre, Tromsø, Norway
| | - Åshild Ønvik Pedersen
- I. M. Garfelt-Paulsen, V. Ravolainen, E. Fuglei and Å. Ø. Pedersen (https://orcid.org/0000-0001-9388-7402) ✉ , Norwegian Polar Inst., Fram Centre, Tromsø, Norway
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Fuglei E, Henden JA, Callahan CT, Gilg O, Hansen J, Ims RA, Isaev AP, Lang J, McIntyre CL, Merizon RA, Mineev OY, Mineev YN, Mossop D, Nielsen OK, Nilsen EB, Pedersen ÅØ, Schmidt NM, Sittler B, Willebrand MH, Martin K. Circumpolar status of Arctic ptarmigan: Population dynamics and trends. Ambio 2020; 49:749-761. [PMID: 31073984 PMCID: PMC6989701 DOI: 10.1007/s13280-019-01191-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 09/02/2018] [Revised: 02/19/2019] [Accepted: 04/12/2019] [Indexed: 05/26/2023]
Abstract
Rock ptarmigan (Lagopus muta) and willow ptarmigan (L. lagopus) are Arctic birds with a circumpolar distribution but there is limited knowledge about their status and trends across their circumpolar distribution. Here, we compiled information from 90 ptarmigan study sites from 7 Arctic countries, where almost half of the sites are still monitored. Rock ptarmigan showed an overall negative trend on Iceland and Greenland, while Svalbard and Newfoundland had positive trends, and no significant trends in Alaska. For willow ptarmigan, there was a negative trend in mid-Sweden and eastern Russia, while northern Fennoscandia, North America and Newfoundland had no significant trends. Both species displayed some periods with population cycles (short 3-6 years and long 9-12 years), but cyclicity changed through time for both species. We propose that simple, cost-efficient systematic surveys that capture the main feature of ptarmigan population dynamics can form the basis for citizen science efforts in order to fill knowledge gaps for the many regions that lack systematic ptarmigan monitoring programs.
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Affiliation(s)
- Eva Fuglei
- Norwegian Polar Institute, Fram Centre, Postbox 6606, Langnes, 9296 Tromsø, Norway
| | - John-André Henden
- Dep. of Arctic and Marine Biology, University of Tromsø, The Arctic University, 9019 Tromsø, Norway
| | - Chris T. Callahan
- Government of Newfoundland and Labrador, 117 Riverside Drive, Corner Brook, NL A2H 0A2 Canada
| | - Olivier Gilg
- UMR 6249 Chrono-environnement, Université de Bourgogne Franche-Comté, 16 route de Gray, 25000 Besançon, France
- Groupe de recherche en Ecologie Arctique, 16 rue de Vernot, 21440 Francheville, France
| | - Jannik Hansen
- Section of Ecosystem Ecology, Department of Bioscience, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
| | - Rolf A. Ims
- Dep. of Arctic and Marine Biology, University of Tromsø, The Arctic University, 9019 Tromsø, Norway
| | | | - Johannes Lang
- Clinic for Birds, Reptiles, Amphibian and Fish, Justus-Liebig-University Giessen, Frankfurter Str. 91-93, 35392 Giessen, Germany
| | | | - Richard A. Merizon
- Alaska Department of Fish and Game, 1800 Glenn Highway, Suite 2, Palmer, AK 99567 USA
| | - Oleg Y. Mineev
- Komi Republic, Kommunisticheskaya 28, 167 982 Syktyvkar, Russia
| | - Yuri N. Mineev
- Komi Republic, Kommunisticheskaya 28, 167 982 Syktyvkar, Russia
| | - Dave Mossop
- Yukon Research Ctr, Yukon College, PO Box 2799, Whitehorse, YT Y1A 5K4 Canada
| | - Olafur K. Nielsen
- Icelandic Institute of Natural History, Urridaholtsstræti 6-8, 210 Gardabær, Iceland
| | - Erlend B. Nilsen
- Norwegian Institute for Nature Research, 5685 Torgarden, 7485 Trondheim, Norway
| | | | - Niels Martin Schmidt
- Arctic Research Centre, Department of Bioscience, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
| | - Benoît Sittler
- Chair for Nature Conservation and Landscape Ecology, University of Freiburg, Tennenbacherstraße 4, 79106 Freiburg, Germany
| | | | - Kathy Martin
- Department of Forest and Conservation Sciences, University of British Columbia, 2424 Main Mall, Vancouver, V6T 1Z4 Canada
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Hansen BB, Pedersen ÅØ, Peeters B, Le Moullec M, Albon SD, Herfindal I, Sæther B, Grøtan V, Aanes R. Spatial heterogeneity in climate change effects decouples the long-term dynamics of wild reindeer populations in the high Arctic. Glob Chang Biol 2019; 25:3656-3668. [PMID: 31435996 PMCID: PMC6851690 DOI: 10.1111/gcb.14761] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/05/2019] [Indexed: 05/18/2023]
Abstract
The 'Moran effect' predicts that dynamics of populations of a species are synchronized over similar distances as their environmental drivers. Strong population synchrony reduces species viability, but spatial heterogeneity in density dependence, the environment, or its ecological responses may decouple dynamics in space, preventing extinctions. How such heterogeneity buffers impacts of global change on large-scale population dynamics is not well studied. Here, we show that spatially autocorrelated fluctuations in annual winter weather synchronize wild reindeer dynamics across high-Arctic Svalbard, while, paradoxically, spatial variation in winter climate trends contribute to diverging local population trajectories. Warmer summers have improved the carrying capacity and apparently led to increased total reindeer abundance. However, fluctuations in population size seem mainly driven by negative effects of stochastic winter rain-on-snow (ROS) events causing icing, with strongest effects at high densities. Count data for 10 reindeer populations 8-324 km apart suggested that density-dependent ROS effects contributed to synchrony in population dynamics, mainly through spatially autocorrelated mortality. By comparing one coastal and one 'continental' reindeer population over four decades, we show that locally contrasting abundance trends can arise from spatial differences in climate change and responses to weather. The coastal population experienced a larger increase in ROS, and a stronger density-dependent ROS effect on population growth rates, than the continental population. In contrast, the latter experienced stronger summer warming and showed the strongest positive response to summer temperatures. Accordingly, contrasting net effects of a recent climate regime shift-with increased ROS and harsher winters, yet higher summer temperatures and improved carrying capacity-led to negative and positive abundance trends in the coastal and continental population respectively. Thus, synchronized population fluctuations by climatic drivers can be buffered by spatial heterogeneity in the same drivers, as well as in the ecological responses, averaging out climate change effects at larger spatial scales.
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Affiliation(s)
- Brage Bremset Hansen
- Centre for Biodiversity Dynamics (CBD)Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
| | | | - Bart Peeters
- Centre for Biodiversity Dynamics (CBD)Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
| | - Mathilde Le Moullec
- Centre for Biodiversity Dynamics (CBD)Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
| | | | - Ivar Herfindal
- Centre for Biodiversity Dynamics (CBD)Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
| | - Bernt‐Erik Sæther
- Centre for Biodiversity Dynamics (CBD)Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
| | - Vidar Grøtan
- Centre for Biodiversity Dynamics (CBD)Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
| | - Ronny Aanes
- Centre for Biodiversity Dynamics (CBD)Department of BiologyNorwegian University of Science and Technology (NTNU)TrondheimNorway
- Norwegian Polar Institute (NPI)Fram CentreTromsøNorway
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7
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Affiliation(s)
- Mathilde Le Moullec
- Centre for Biodiversity Dynamics, Department of BiologyNorwegian University of Science and Technology (NTNU) NO‐7491 Trondheim Norway
| | | | - Audun Stien
- Norwegian Institute for Nature Research (NINA), Arctic Ecology Department, Fram Centre NO‐9296 Tromsø Norway
| | - Jørgen Rosvold
- Norwegian Institute of Nature Research (NINA) NO 7034 Trondheim Norway
| | - Brage Bremset Hansen
- Centre for Biodiversity Dynamics, Department of BiologyNorwegian University of Science and Technology (NTNU) NO‐7491 Trondheim Norway
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Hansen BB, Lorentzen JR, Welker JM, Varpe Ø, Aanes R, Beumer LT, Pedersen ÅØ. Reindeer turning maritime: Ice‐locked tundra triggers changes in dietary niche utilization. Ecosphere 2019. [DOI: 10.1002/ecs2.2672] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Affiliation(s)
- Brage Bremset Hansen
- Centre for Biodiversity Dynamics Department of Biology Norwegian University of Science and Technology N‐7491 Trondheim Norway
| | - Jon Runar Lorentzen
- Centre for Biodiversity Dynamics Department of Biology Norwegian University of Science and Technology N‐7491 Trondheim Norway
- Department of Arctic Biology The University Centre in Svalbard N‐9171 Longyearbyen Norway
| | - Jeffrey M. Welker
- UArctic & University of Oulo Oulo 90014 Finland
- University of Alaska Anchorage Anchorage Alaska 99516 USA
| | - Øystein Varpe
- Department of Arctic Biology The University Centre in Svalbard N‐9171 Longyearbyen Norway
- Akvaplan‐niva Fram Centre N‐9296 Tromsø Norway
| | - Ronny Aanes
- Centre for Biodiversity Dynamics Department of Biology Norwegian University of Science and Technology N‐7491 Trondheim Norway
- Norwegian Polar Institute Fram Centre N‐9296 Tromsø Norway
| | - Larissa Teresa Beumer
- Department of Arctic Biology The University Centre in Svalbard N‐9171 Longyearbyen Norway
- Department of Bioscience Aarhus University Frederiksborgvej 399 4000 Roskilde Denmark
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Le Moullec M, Pedersen ÅØ, Yoccoz NG, Aanes R, Tufto J, Hansen BB. Ungulate population monitoring in an open tundra landscape: distance sampling versus total counts. Wildlife Biology 2017. [DOI: 10.2981/wlb.00299] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Mathilde Le Moullec
- Mathilde Le Moullec and N. Yoccoz, Dept of Arctic and Marine Biology, UiT The Arctic Univ. of Norway, Tromsø, Norway
| | - Åshild Ønvik Pedersen
- MLM, Å. Ø. Pedersen and R. Aanes, Norwegian Polar Inst., Tromsø, Norway. Present address for RA: Norwegian Environment Agency, Trondheim, Norway
| | - Nigel Gilles Yoccoz
- Mathilde Le Moullec and N. Yoccoz, Dept of Arctic and Marine Biology, UiT The Arctic Univ. of Norway, Tromsø, Norway
| | - Ronny Aanes
- MLM, Å. Ø. Pedersen and R. Aanes, Norwegian Polar Inst., Tromsø, Norway. Present address for RA: Norwegian Environment Agency, Trondheim, Norway
| | - Jarle Tufto
- J. Tufto, Centre for Biodiversity Dynamics, Dept of Mathematical Sciences, Norwegian Univ. of Science and Technology (NTNU), Trondheim, Norway
| | - Brage Bremset Hansen
- B. B. Hansen and present address for MLM: Centre for Biodiversity Dynamics, Dept of Biology, Norwegian Univ. of Science and Technology (NTNU), NO-7491 Trondheim, Norway
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Henden JA, Ims RA, Fuglei E, Pedersen ÅØ. Changed Arctic-alpine food web interactions under rapid climate warming: implication for ptarmigan research. Wildlife Biology 2017. [DOI: 10.2981/wlb.00240] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- John-André Henden
- J.-A. Henden and R. A. Ims, Dept. of Arctic and Marine Biology, UiT- The
| | - Rolf Anker Ims
- J.-A. Henden and R. A. Ims, Dept. of Arctic and Marine Biology, UiT- The
| | - Eva Fuglei
- E. Fuglei and Å. Ø. Pedersen, Norwegian Polar Institute, FRAM Centre, NO-9296 Tromsø, Norway
| | - Åshild Ønvik Pedersen
- E. Fuglei and Å. Ø. Pedersen, Norwegian Polar Institute, FRAM Centre, NO-9296 Tromsø, Norway
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11
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Fuglei E, Blanchet MA, Unander S, Ims RA, Pedersen ÅØ. Hidden in the darkness of the Polar night: a first glimpse into winter migration of the Svalbard rock ptarmigan. Wildlife Biology 2017. [DOI: 10.2981/wlb.00241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Eva Fuglei
- E. Fuglei , M.-A. Blanchet, Å. Ø. Pedersen, Norwegian Polar Institute, Fram Centre, NO-9296 Tromso, Norway
| | - Marie-Anne Blanchet
- E. Fuglei , M.-A. Blanchet, Å. Ø. Pedersen, Norwegian Polar Institute, Fram Centre, NO-9296 Tromso, Norway
| | | | - Rolf Anker Ims
- R. A. Ims, Dept of Arctic and Marine Biology, Univ. of Tromsø — The Arctic University of Norway, Norway
| | - Åshild Ønvik Pedersen
- E. Fuglei , M.-A. Blanchet, Å. Ø. Pedersen, Norwegian Polar Institute, Fram Centre, NO-9296 Tromso, Norway
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12
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Peeters B, Veiberg V, Pedersen ÅØ, Stien A, Irvine RJ, Aanes R, Saether BE, Strand O, Hansen BB. Climate and density dependence cause changes in adult sex ratio in a large Arctic herbivore. Ecosphere 2017. [DOI: 10.1002/ecs2.1699] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Bart Peeters
- Centre for Biodiversity Dynamics; Department of Biology; Norwegian University of Science and Technology; NO-7491 Trondheim Norway
| | - Vebjørn Veiberg
- Terrestrial Ecology Department; Norwegian Institute for Nature Research; NO-7485 Trondheim Norway
| | | | - Audun Stien
- Arctic Ecology Department; The Fram Centre; Norwegian Institute for Nature Research; NO-9296 Tromsø Norway
| | | | - Ronny Aanes
- Centre for Biodiversity Dynamics; Department of Biology; Norwegian University of Science and Technology; NO-7491 Trondheim Norway
| | - Bernt-Erik Saether
- Centre for Biodiversity Dynamics; Department of Biology; Norwegian University of Science and Technology; NO-7491 Trondheim Norway
| | - Olav Strand
- Terrestrial Ecology Department; Norwegian Institute for Nature Research; NO-7485 Trondheim Norway
| | - Brage Bremset Hansen
- Centre for Biodiversity Dynamics; Department of Biology; Norwegian University of Science and Technology; NO-7491 Trondheim Norway
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