SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Fuglei Eva) "

Sökning: WFRF:(Fuglei Eva)

  • Resultat 1-10 av 10
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Berteaux, Dominique, et al. (författare)
  • Arctic and red foxes
  • 2011
  • Ingår i: Arctic WOLVES. - Quebec City, Quebec, Canada : Centre d’études nordiques, Université Laval. ; , s. 76-87
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
  •  
2.
  • Berteaux, Dominique, et al. (författare)
  • Foreword to Supplement 1 : research on a polar species-the Arctic fox
  • 2017
  • Ingår i: Polar Research. - : Norwegian Polar Institute. - 0800-0395 .- 1751-8369. ; 36
  • Tidskriftsartikel (refereegranskat)abstract
    • The Arctic fox has a circumpolar distribution and is intensively studied because it is adapted to extreme environments and influences the ecology of many other species. We introduce here a collection of 12 articles on Arctic fox biology and management. After summarizing the main biological features of the species, we explore the peer-reviewed literature dealing with the Arctic fox through a bibliometric network analysis which identifies clusters of papers sharing a high similarity of cited literature. We visualize with a word cloud analysis 10 clusters comprising 97% of 755 articles published by 1742 authors from 1996-2015. Behavioural and ecological questions, including conservation science, dominate this recent literature. The collection of papers published in the supplement offers an excellent representation of current research dealing with Arctic fox biology and management.
  •  
3.
  • Dalén, Love, et al. (författare)
  • Population history and genetic structure of a circumpolar species : the arctic fox
  • 2005
  • Ingår i: Biological Journal of the Linnean Society. - : Oxford University Press (OUP). - 0024-4066 .- 1095-8312. ; 84:1, s. 79-89
  • Tidskriftsartikel (refereegranskat)abstract
    • The circumpolar arctic fox Alopex lagopus thrives in cold climates and has a high migration rate involving long-distance movements. Thus, it differs from many temperate taxa that were subjected to cyclical restriction in glacial refugia during the Ice Ages. We investigated population history and genetic structure through mitochondrial control region variation in 191 arctic foxes from throughout the arctic. Several haplotypes had a Holarctic distribution and no phylogeographical structure was found. Furthermore, there was no difference in haplotype diversity between populations inhabiting previously glaciated and unglaciated regions. This suggests current gene flow among the studied populations, with the exception of those in Iceland, which is surrounded by year-round open water. Arctic foxes have often been separated into two ecotypes: ‘lemming’ and ‘coastal’. An analysis of molecular variance suggested particularly high gene flow among populations of the ‘lemming’ ecotype. This could be explained by their higher migration rate and reduced fitness in migrants between ecotypes. A mismatch analysis indicated a sudden expansion in population size around 118 000 BP, which coincides with the last interglacial. We propose that glacial cycles affected the arctic fox in a way opposite to their effect on temperate species, with interglacials leading to short-term isolation in northern refugia.
  •  
4.
  • Geffen, Eli, et al. (författare)
  • Sea ice occurrence predicts genetic isolation in the Arctic fox
  • 2007
  • Ingår i: Molecular Ecology. - 0962-1083 .- 1365-294X. ; 16:20, s. 4241-4255
  • Tidskriftsartikel (refereegranskat)abstract
    • Unlike Oceanic islands, the islands of the Arctic Sea are not completely isolated from migration by terrestrial vertebrates. The pack ice connects many Arctic Sea islands to the mainland during winter months. The Arctic fox (Alopex lagopus), which has a circumpolar distribution, populates numerous islands in the Arctic Sea. In this study, we used genetic data from 20 different populations, spanning the entire distribution of the Arctic fox, to identify barriers to dispersal. Specifically, we considered geographical distance, occurrence of sea ice, winter temperature, ecotype, and the presence of red fox and polar bear as nonexclusive factors that influence the dispersal behaviour of individuals. Using distance-based redundancy analysis and the BIOENV procedure, we showed that occurrence of sea ice is the key predictor and explained 40-60% of the genetic distance among populations. In addition, our analysis identified the Commander and Pribilof Islands Arctic populations as genetically unique suggesting they deserve special attention from a conservation perspective.
  •  
5.
  • Norén, Karin, et al. (författare)
  • Arctic fox Vulpes lagopus population structure : circumpolar patterns and processes
  • 2011
  • Ingår i: Oikos. - : Wiley. - 0030-1299 .- 1600-0706. ; 120:6, s. 873-885
  • Tidskriftsartikel (refereegranskat)abstract
    • Movement is a prominent process shaping genetic population structure. In many northern mammal species, population structure is formed by geographic distance, geographical barriers and various ecological factors that influence movement over the landscape. The Arctic fox Vulpes lagopus is a highly mobile, opportunistic carnivore of the Arctic that occurs in two main ecotypes with different ecological adaptations. We assembled microsatellite data in 7 loci for 1834 Arctic foxes sampled across their entire distribution to describe the circumpolar population structure and test the impact of (1) geographic distance, (2) geographical barriers and (3) ecotype designation on the population structure. Both Structure and Geneland demonstrated distinctiveness of Iceland and Scandinavia whereas low differentiation was observed between North America-northern Greenland, Svalbard and Siberia. Genetic differentiation was significantly correlated to presence of sea ice on a global scale, but not to geographical distance or ecotype designation. However, among areas connected by sea ice, we recorded a pattern of isolation by distance. The maximum likelihood approach in Migrate suggested that connectivity across North America-northern Greenland and Svalbard was particularly high. Our results demonstrate the importance of sea ice for maintaining connectivity between Arctic fox populations and we therefore predict that climate change will increase genetic divergence among populations in the future.
  •  
6.
  •  
7.
  • Norén, Karin, et al. (författare)
  • From monogamy to complexity : social organization of arctic foxes (Vulpes lagopus) in contrasting ecosystems
  • 2012
  • Ingår i: Canadian Journal of Zoology. - 0008-4301 .- 1480-3283. ; 90:9, s. 1102-1116
  • Tidskriftsartikel (refereegranskat)abstract
    • Canids display pronounced intraspecific variation in social organization, ranging from single breeding females to large and complex groups. Despite several hypotheses in this matter, little is understood about the ecological factors underlying this flexibility. We have used the arctic fox (Vulpes lagopus (L., 1758)) to investigate how contrasting ecosystem conditions concerning resources and predation influence group formation. We predicted that complex groups are more common in resource-rich ecosystems with predators, whereas simple groups occur in more marginal ecosystems without predators. Samples from 54 groups were collected from four populations of arctic foxes with contrasting prey resources and predation and these samples were genotyped in 10 microsatellite loci. We found considerable variation between ecosystems and a significant relationship between resources and formation of complex groups. We conclude that sufficient amounts of food is a prerequisite for forming complex groups, but that defense against predation further increases the benefits of living in larger groups. We present a conceptual model suggesting that a trade-off between the cost of resource depletion and the benefits obtained for guarding against predators explain the differences in social organization. The variable ecology of  the arctic foxes makes it is a plausible model species for understanding the connection between ecology and social organization also in other species.
  •  
8.
  • Norén, Karin, et al. (författare)
  • Pulses of movement across the sea ice: population connectivity and temporal genetic structure in the arctic fox
  • 2011
  • Ingår i: Oecologia. - : Springer Science and Business Media LLC. - 0029-8549 .- 1432-1939. ; 166:4, s. 973-984
  • Tidskriftsartikel (refereegranskat)abstract
    • Lemmings are involved in several important functions in the Arctic ecosystem. The Arctic fox (Vulpes lagopus) can be divided into two discrete ecotypes: “lemming foxes” and “coastal foxes”. Crashes in lemming abundance can result in pulses of “lemming fox” movement across the Arctic sea ice and immigration into coastal habitats in search for food. These pulses can influence the genetic structure of the receiving population. We have tested the impact of immigration on the genetic structure of the “coastal fox” population in Svalbard by recording microsatellite variation in seven loci for 162 Arctic foxes sampled during the summer and winter over a 5-year period. Genetic heterogeneity and temporal genetic shifts, as inferred by STRUCTURE simulations and deviations from Hardy–Weinberg proportions, respectively, were recorded. Maximum likelihood estimates of movement as well as STRUCTURE simulations suggested that both immigration and genetic mixture are higher in Svalbard than in the neighbouring “lemming fox” populations. The STRUCTURE simulations and AMOVA revealed there are differences in genetic composition of the population between summer and winter seasons, indicating that immigrants are not present in the reproductive portion of the Svalbard population. Based on these results, we conclude that Arctic fox population structure varies with time and is influenced by immigration from neighbouring populations. The lemming cycle is likely an important factor shaping Arctic fox movement across sea ice and the subsequent population genetic structure, but is also likely to influence local adaptation to the coastal habitat and the prevalence of diseases.
  •  
9.
  •  
10.
  • Taylor, Jason J., et al. (författare)
  • Arctic terrestrial biodiversity status and trends: A synopsis of science supporting the CBMP State of Arctic Terrestrial Biodiversity Report
  • 2020
  • Ingår i: Ambio. - : Springer Science and Business Media LLC. - 0044-7447 .- 1654-7209. ; 49:3, s. 833-847
  • Tidskriftsartikel (refereegranskat)abstract
    • This review provides a synopsis of the main findings of individual papers in the special issue Terrestrial Biodiversity in a Rapidly Changing Arctic. The special issue was developed to inform the State of the Arctic Terrestrial Biodiversity Report developed by the Circumpolar Biodiversity Monitoring Program (CBMP) of the Conservation of Arctic Flora and Fauna (CAFF), Arctic Council working group. Salient points about the status and trends of Arctic biodiversity and biodiversity monitoring are organized by taxonomic groups: (1) vegetation, (2) invertebrates, (3) mammals, and (4) birds. This is followed by a discussion about commonalities across the collection of papers, for example, that heterogeneity was a predominant pattern of change particularly when assessing global trends for Arctic terrestrial biodiversity. Finally, the need for a comprehensive, integrated, ecosystem-based monitoring program, coupled with targeted research projects deciphering causal patterns, is discussed.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-10 av 10
Typ av publikation
tidskriftsartikel (7)
annan publikation (2)
bokkapitel (1)
Typ av innehåll
refereegranskat (7)
övrigt vetenskapligt/konstnärligt (3)
Författare/redaktör
Fuglei, Eva (10)
Angerbjörn, Anders (9)
Hersteinsson, Pall (7)
Norén, Karin (6)
Dalen, Love (5)
Samelius, Gustaf (4)
visa fler...
Eide, Nina E. (4)
Carmichael, Lindsey (3)
Elmhagen, Bodil (2)
Meijer, Tomas (2)
Ehrich, Dorothee (2)
Berteaux, Dominique (2)
Aronsson, Mora (1)
Schmidt, Niels Marti ... (1)
Tannerfeldt, Magnus (1)
Björkman, Anne, 1981 (1)
Wayne, Robert K. (1)
Ims, Rolf A. (1)
Eide, Nina (1)
Vilà, Carles (1)
Smith, Paul A. (1)
Gallant, Daniel (1)
Kruchenkova, Elena (1)
Lecomte, Nicholas (1)
Menuyshina, Irina (1)
Ovsjanikov, Nikita (1)
Rodnikova, Anna (1)
Tarroux, Arnaud (1)
Yoccoz, Nigel Gilles (1)
Casajus, Nicolas (1)
White, Paula A. (1)
Falk, Knud (1)
Kapel, Christion M.O ... (1)
Roth, James D. (1)
Franke, Alastair (1)
Geffen, Eli (1)
Waidyaratne, Sitara (1)
Goltsman, Michael (1)
Kapel, Christian M. (1)
Heiðmarsson, Starri (1)
Christensen, Tom (1)
Coulson, Stephen J. (1)
Ravolainen, Virve (1)
Kapel, Christian M. ... (1)
Menyushina, Irina (1)
Strobeck, Curtis (1)
Cuyler, Christine (1)
Taylor, Jason J. (1)
Lawler, James P. (1)
Barry, Tom (1)
visa färre...
Lärosäte
Stockholms universitet (9)
Naturhistoriska riksmuseet (2)
Sveriges Lantbruksuniversitet (2)
Göteborgs universitet (1)
Uppsala universitet (1)
Språk
Engelska (10)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (9)
Lantbruksvetenskap (1)

År

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy