A5047365564- Wildlife Ecology and Conservation
- Animal Ecology and Behavior Studies
- Species Distribution and Climate Change
- Bat Biology and Ecology Studies
- Animal Behavior and Welfare Studies
- Ecology and biodiversity studies
- Marine animal studies overview
- Meat and Animal Product Quality
- Genetic and phenotypic traits in livestock
- Ecology and Vegetation Dynamics Studies
- Human-Animal Interaction Studies
- Rangeland and Wildlife Management
- Isotope Analysis in Ecology
- Adipose Tissue and Metabolism
- Animal Vocal Communication and Behavior
- Indigenous Studies and Ecology
- Winter Sports Injuries and Performance
- Primate Behavior and Ecology
- Marine and fisheries research
- Biotin and Related Studies
- Food Industry and Aquatic Biology
- Vector-borne infectious diseases
- Peroxisome Proliferator-Activated Receptors
- Yersinia bacterium, plague, ectoparasites research
- melanin and skin pigmentation
UiT The Arctic University of Norway
2002-2024
Centre for Arctic Gas Hydrate, Environment and Climate
2023
Tromsø research foundation
2004-2014
Norwegian Polar Institute
1989-1994
University of Bergen
1992-1993
In north-western Europe, the common tick, Ixodes ricinus, is widely established, its distribution appears to be increasing and spread of tick-borne diseases concern. The project 'Flått i Nord' (Ticks in northern Norway) commenced spring 2009 with intention studying tick's that pathogens Norway. Several methods were used: cloth-dragging, collecting from trapped small mammals, pets. Since 2010, occurrence ticks region Norway was determined directly by cloth-dragging 167 times 109 separate...
Arctic fox (Alopex lagopus) populations in Scandinavia are small and restricted to alpine regions, while red foxes (Vulpes vulpes) common throughout both Norway Sweden. The two species similar behaviour diet, thus competition between them is likely. This study provides seven observations of aggressive interactions the species. One adult arctic one cub were killed by foxes, male was chased away from his den, female a fled into den as approached, four cubs walked upon it once when no could be...
Food habits of arctic foxes (Alopex lagopus) on the western coast Svalbard were studied in years 1986-89. Faeces (n=1018) collected mostly summer, and food remains recorded both at dens elsewhere region. The opportunistic their hunting feeding habits, utilizing a wide variety available items. Alcids (mainly little auks Brunnich's guillemot), gulls kittiwakes), fulmars major foods summer. consumption alcids by fox families was correlated with availability near den. In winter, and, one region,...
Optimal foraging theory predicts that a hunter should hunt the energetically most profitable prey, often larger size classes. The eagle owl is formidable of water voles. Measurements mandibles voles eaten by owls indicated frequency distribution more skewed toward individuals than could be expected, suggesting selection owls.
Anthropogenic fragmentation of habitat and populations is recognized as one the most important factors influencing loss biodiversity. Since it difficult to quantify demographic parameters in small populations, we need alternative methods elucidate affecting viability local populations. The Fennoscandian arctic fox inhabits a naturally fragmented alpine tundra environment, but historic anthropogenic impacts have further its distribution. After almost 80 yr protection, population remains...
The relationship between home range and reproductive status of water voles (Arvicola amphibius) was studied by radio-tracking on an island off the coast northern Norway in 2006–2009. aim to test assumptions about species' social structure relative other microtines. Juveniles used fairly small ranges (about 400 m²), with no difference males females. Subadults, overwintered April, had similar juveniles. Reproductively active (mean 2774.0 m²) increased their seven-fold juvenile males, average...
Most temperate bats are regular hibernators in the winter. Knowledge about length of their active season and how they adjust nightly activity throughout season, is critical to conservation. The characteristics these likely vary with climate as well latitude. This study investigated flight soprano pipistrelle Pipistrellus pygmaeus Frafjord, a small valley south-western corner Norway (58° 50'N 6° 18'E) an oceanic climate.Activity was recorded ultrasound recorder April 2018 June 2019 at one...
Abstract Predator–prey relationships are of great significance to ecosystems, and their effects on the population dynamics voles lemmings (Microtinae) in Boreal Arctic environments have long been particular interest. A simple ecosystem with one major prey predator could be an ideal setting for a study interactions. This is situation several small islands coast northern Norway just below Circle, populations water Arvicola amphibius preyed upon by eagle owl Bubo bubo . The vole was studied...
We studied the prehistoric and historic distribution of arctic foxes in Norway by examining material reports from archaeological excavations. A total 44 fox bones were found 15 excavations, all which younger than 5000 years before present (B.P.). The majority these sites was located within or close to foxes. Additionally, naturally deposited two excavations dated 36 000-28 000 13 B.P. respectively, indicating that also lived along Norwegian coast Pleistocene. No bone period 9000-5000 B.P.,...
Records of the ocean sunfish Mola mola along Norwegian coast were compiled from all possible sources: literature, media, databases and museums. A total 216 records found between 1801 2015. They distributed whole coast, except for most north‐eastern part. Nearly years with more than five after 2000, 1985 as only exception a maximum 23 in 2014. Most, 92·4%, July to December. before 1979 incidental random no recorded 54 separate 1879 The northernmost record was 70° 44′ N December 1881. No...
The arctic island group of Svalbard has no native species voles or lemmings, but the vole Microtus rossiaemeridionalis been accidentally introduced. Mainly found in region abandoned Russian mining town Grumant, not able to colonise larger parts Svalbard. food habits foxes Alopex lagopus were studied by collecting and analysing samples scats from various sites 1996, including fresh three litters. Hairs all sites, proportion diet varied considerably. Overall, made up 13% occurrence,...
The population of water voles Arvicola amphibius was surveyed on 21 islands in the Solvær archipelago, northern Norway, August 2012; 11 with semi-wild domestic sheep Ovis aries and 10 without sheep. Signs from are very easy to detect were used as a measure (on scale 0-10), numbers counted. ranking signs compared, significant difference found. Islands had, one exception, only small fragmented populations voles, exception being fairly large Carex swamp that not grazed by where moderate-sized...
Abstract Background Nearly all insectivorous bats (Chiroptera) are strictly nocturnal, flying and feeding only between sunset sunrise despite lower insect availability than by day, most likely to avoid predation diurnal birds. This may represent a great challenge living north of the Arctic Circle, which exposed bright nights in period midnight sun. The northern bat Eptesicus nilssonii was studied at different latitudes Norway (69, 66 58°N) three techniques; visual counts exits from returns...