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Harmonizing circumpolar monitoring of Arctic fox: benefits, opportunities, challenges and recommendations
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-16)
The biodiversity working group of the Arctic Council has developed pan-Arctic biodiversity
monitoring plans to improve our ability to detect, understand and report on long-term
change in Arctic biodiversity. The Arctic fox (Vulpes lagopus) was identified as a target of
future monitoring because of its circumpolar distribution, ecological importance and reliance
on Arctic ecosystems. We provide ...
Hiding in the background: community-level patterns in invertebrate herbivory across the tundra biome
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-03)
Invertebrate herbivores depend on external temperature for growth and metabolism. Continued warming in tundra ecosystems is proposed to result in increased invertebrate herbivory. However, empirical data about how current levels of invertebrate herbivory vary across the Arctic is limited and generally restricted to a single host plant or a small group of species, so predicting future change remains ...
Long-distance plant dispersal to North Atlantic islands: colonization routes and founder effect
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-04-15)
Long-distance dispersal (LDD) processes influence the founder effect on islands.We use genetic data for 25 Atlantic species and similarities among regional floras to analyse colonization, and test whether the genetic founder effect on five islands is associated with dispersal distance, island size and species traits. Most species colonized postglacially via multiple dispersal events from several ...
Age-dependent genetic structure of arctic foxes in Svalbard
(Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
Vicariance, dispersal, and hybridization in a naturally fragmented system: the afro-alpine endemics Carex monostachya and C. runssoroensis (Cyperaceae)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-01-08)
The naturally fragmented habitat on the tallest African mountains provides a good model system to study vicariance, dispersal, and hybridization. Many mountains are separated by lowland that likely was unsuitable for high-alpine plants even during cold climatic periods. <br> We explore the relative importance of these processes using two endemic sister species: the widespread Ethiopian/eastern East ...
Vole abundance and reindeer carcasses determine breeding activity of Arctic foxes in low Arctic Yamal, Russia
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-09-16)
High latitude ecosystems are at present changing rapidly under the influence of climate warming, and specialized Arctic species at the southern margin of the Arctic may be particularly affected. The Arctic fox (Vulpes lagopus), a small mammalian predator endemic to northern tundra areas, is able to exploit different resources in the context of varying tundra ecosystems. Although generally widespread, ...
Homage to Hersteinsson and Macdonald: climate warming and resource subsidies cause red fox range expansion and Arctic fox decline
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-16)
Climate change can have a marked effect on the distribution and abundance of some
species, as well as their interspecific interactions. In 1992, before ecological effects of
anthropogenic climate change had developed into a topical research field, Hersteinsson
and Macdonald published a seminal paper hypothesizing that the northern distribution
limit of the red fox (Vulpes vulpes) is determined ...
Snowmobile impact on diurnal behaviour in the Arctic fox
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-16)
As tourism increases globally, studies have documented impacts on wildlife from anthropogenic disturbances. In this observational experiment we aimed to investigate if snowmobile traffic affected the diurnal activity of Arctic fox in High Arctic Svalbard. We conducted the study in two areas in Svalbard, one control area with low snowmobile traffic and one experimental area with high snowmobile ...
Genetic roadmap of the Arctic: plant dispersal highways, traffic barriers and capitals of diversity
(Journal article; Tidsskriftartikkel; Peer reviewed, 2013-07-22)
<ul>
<p><li>We provide the first comparative multispecies analysis of spatial genetic structure and diversity in the circumpolar Arctic using a common strategy for sampling and genetic analyses. We aimed to identify and explain potential general patterns of genetic discontinuity/connectivity and diversity, and to compare our findings with previously published hypotheses.</li></p>
<p> <li>We ...
Geographical area and life history traits influence diet in an Arctic marine predator
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05-19)
Global changes are thought to affect most Arctic species, yet some populations are more at
risk. Today, the Barents Sea ecoregion is suffering the strongest sea ice retreat ever measured;
and these changes are suspected to modify food access and thus diet of several
species. Biochemical diet tracers enable investigation of diet in species such as polar bears
(Ursus maritimus). We examined ...