Blar i Institutt for natur, helse og miljø på tittel
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Seasonal variation of mercury and δ15N in fish from Lake Heddalsvatn, southern Norway
(Journal article; Peer reviewed, 2014)Seasonal variations of mercury (Hg) concentration in muscle tissue of northern pike (Esox lucius L), European whitefish (Coregonus lavaretus L) and European perch (Perca fluviatilis L) have been investigated in Lake ... -
Seasonal Variations in the Use of Profundal Habitat among Freshwater Fishes in Lake Norsjø, Southern Norway, and Subsequent Effects on Fish Mercury Concentrations
(Journal article; Peer reviewed, 2016)This study is based on monthly sampling of fish from grates mounted at an industrial water intake, located at a depth of 50 m in Lake Norsjø (Southern Norway) during the year 2014, to investigate seasonal variations in the ... -
Selective foraging on woody plant species by the Eurasian beaver (Castor fiber) in Telemark, Norway
(Journal article; Peer reviewed, 2006)Beavers Castor spp. are generalist herbivores, feeding on the bark, shoots and leaves of woody plants, terrestrial herbs and forbs, ferns and aquatic vegetation. As central-place foragers, beavers move out from water to ... -
Serological screening for tick-borne encephalitis virus in eight Norwegian herds of semi-domesticated reindeer (Rangifer tarandus tarandus)
(Peer reviewed; Journal article, 2023)Tick-borne encephalitis virus (TBEV) is found in Ixodes ricinus ticks throughout the area where viable tick populations exist. In Norway, TBEV is found in I. ricinus from the south coast until Brønnøy municipality in ... -
Serum cytokine profiles and metabolic tumor burden in patients with non-small cell lung cancer undergoing palliative thoracic radiation therapy
(Journal article; Peer reviewed, 2018)Purpose: Radiation therapy effectively kills cancer cells and elicits local effects in the irradiated tissue. The aim of this study was to investigate the kinetics of cytokines in the serum of patients with lung cancer ... -
Sex and age composition of spring-hunted Eurasian beaver in Norway
(Journal article; Peer reviewed, 2002)In Norway, Sweden and Finland most Eurasian beaver (Castor fiber) harvested are shot in April and May. As beaver cannot be sexed or effectively aged under spring hunting conditions, hunters normally shoot the first animal ... -
Sex discrimination via anal gland secretion in a territorial monogamous mammal
(Journal article; Peer reviewed, 2014-07-12)Monogamy in mammals is relatively unusual, only occurring in 3-5% and to an even lesser degree in rodents. Monogamy exists in two forms, facultative which evolved due to female dispersion and obligate when male care is ... -
Sex-biased dispersal in a northern ungulate population
(Journal article; Peer reviewed, 2011)In most mammals dispersal is male-biased and in many polygynous ungulates female philopatry and matrilineal grouping involve small-scale genetic structure. We have through sex-related differences in microsatellite allele ... -
Sexual dimorphism in territorial scent marking by adult eurasian beavers (Castor fiber)
(Journal article; Peer reviewed, 2006)Mammalian scent marking is often associated with territorial defense. However, males and females may demonstrate different activity patterns and play different roles. Female mammals nurture the young during lactation, while ... -
Sexual dimorphism in the development of scent structures for the obligate monogamous Eurasian beaver (Castor fiber)
(Journal article; Peer reviewed, 2004)Scent marking is a common form of territorial demarcation in mammals and differential marking by the sexes may select for differences in scent gland developmental rates or size. Rates of marking reflect level of defense ... -
Similarity of Campylobacter lari among human, animal, and water isolates in Norway
(Journal article; Peer reviewed, 2008)A total of 49 isolates of Campylobacter lari from human, poultry, ducks, pigs, and water were genetically characterized. The species were identified by biotyping and multiplex polymerase chain reaction (PCR). Automatic ... -
Simulated winter browsing may lead to induced susceptibility of willows to beavers in spring
(Journal article; Peer reviewed, 2006)Browsing may lead to an induced resistance or susceptibility of the plant to the herbivore. We tested the effect of winter browsing by Eurasian beavers (Castor fiber L., 1758) on food quality of holme willows (Salix ... -
Simulations of the Holocene climate in Europe using an interactive downscaling within the iLOVECLIM model (version 1.1)
(Peer reviewed; Journal article, 2023)This study presents the application of an interactive downscaling in Europe using iLOVECLIM (a model of intermediate complexity), increasing its atmospheric resolution from 5.56 to 0.25∘ kilometric. A transient simulation ... -
Size is not everything: differing activity and foraging patterns between the sexes in a monomorphic mammal
(Peer reviewed; Journal article, 2021)Animals balance foraging with other activities, and activity patterns may differ between sexes due to differing physical requirements and reproductive investments. Sex-specific behavioural differences are common in sexually ... -
Social environment shapes female settlement decisions in a solitary carnivore
(Peer reviewed; Journal article, 2021)How and where a female selects an area to settle and breed is of central importance in dispersal and population ecology as it governs range expansion and gene flow. Social structure and organization have been shown to ... -
Socio-ecological features other than sex affect habitat selection in the socially obligate monogamous Eurasian beaver
(Journal article; Peer reviewed, 2015-08-11)Habitat selection is a context-dependent mechanism, in which both the internal state as well as external factors affect the behavior and decisions of an individual. This is well known for polygamous mammals, which are ... -
Sociodemographic factors modulate the spatial response of brown bears to vacancies created by hunting
(Journal article; Peer reviewed, 2017)1. There is a growing recognition of the importance of indirect effects from hunting on wildlife populations, e.g. social and behavioural changes due to harvest, which occur after the initial offtake. Nonetheless, little ... -
Soft resilience: moisture-dependent lichen elasticity buffer herbivore trampling in cold alpine-tundra ecosystems
(Peer reviewed; Journal article, 2020)Herbivores may have extensive top-down effects in open grazing ecosystems, generating vegetation changes by grazing and trampling. Trampling effects are understudied, but may be a major ecological factor. In cold alpine-Arctic ... -
Soil temperature variation in calciphile mountain plant communities in Southern Norway
(Journal article; Peer reviewed, 2012)Soil temperature dynamics are considered to be of great importance for alpine plant life. The aim of this study was to analyse differences in soil temperature parameters between and within exposed ridges, leesides, and ... -
Spatial and temporal trends of mercury in freshwater fish in Fennoscandia (1965-2015)
(NIVA-rapport;, Research report, 2017)Mercury (Hg) emissions to the atmosphere cause elevated Hg levels in fish, even in many remote regions of the world. Here we present an extensive database of more than 50 000 measurements of Hg in fish, including 2 775 ...