Browsing Institutt for natur, helse og miljø by Title
Now showing items 300-317 of 317
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Tick-borne pathogens in Ixodes ricinus ticks collected from migratory birds in southern Norway
(Peer reviewed; Journal article, 2020)Birds are important hosts for the first life stages of the Ixodes ricinus tick and they can transport their parasites over long distances. The aim of this study was to investigate the prevalence of Borrelia burgdorferi ... -
Tick-transmitted co-infections among erythema migrans patients in a general practice setting in Norway: a clinical and laboratory follow-up study
(Journal article; Peer reviewed, 2021)Background: Erythema migrans (EM) is the most common manifestation of Lyme borreliosis. Here, we examined EM patients in Norwegian general practice to find the proportion exposed to tick-transmitted microorganisms other ... -
Tool-use in a display behaviour by Eurasian beavers ( Castor fiber )
(Journal article; Peer reviewed, 2007)Tool use is rare amongst rodents and has never been recorded in connection with agonistic displays. We witnessed a behaviour, stick display (StD), involving tool use in free-living Eurasian beavers (Castor fiber) that we ... -
Total circulating cell-free DNA as a prognostic biomarker in metastatic colorectal cancer before first-line oxaliplatin-based chemotherapy
(Journal article; Peer reviewed, 2019)Background Metastatic colorectal cancer (mCRC) is a heterogeneous disease where prognosis is dependent both on tumor biology and host factors. Total circulating cell-free DNA (cfDNA) has shown to harbor prognostic ... -
Toxic elements in arctic and sub-arctic brown bears: Blood concentrations of As, Cd, Hg and Pb in relation to diet, age, and human footprint
(Peer reviewed; Journal article, 2023)Contamination with arsenic (As), cadmium (Cd), mercury (Hg) and lead (Pb) is a global concern impairing resilience of organisms and ecosystems. Proximity to emission sources increases exposure risk but remoteness does not ... -
Use of anal gland secretion to distinguish the two beaver species Castor canadensis and C. fiber
(Journal article; Peer reviewed, 1999)Introduced North American beavers Castor canadensis pose a potential threat to the continuing recovery of Eurasian beaver C. fiber populations in several European countries. For management purposes, it is necessary to be ... -
Use of dawn and dusk sight observations to determine colony size and family composition in Eurasian beaver Castor fiber
(Journal article; Peer reviewed, 2006)The methods used to determine family composition and colony size in Eurasian beaver Castor fiber Linnaeus, 1758 are often poorly described in published reports. Here we show how repeated counts of colony size in a random ... -
Use of environmental DNA to detect the myxozoan endoparasite Tetracapsuloides bryosalmonae in large Norwegian lakes
(Journal article; Peer reviewed, 2022)Environmental DNA (eDNA) is an increasingly used noninvasive and cost-effective method for species detections in surveillance studies. The myxozoan endoparasite Tetracapsuloides bryosalmonae is the causative agent of ... -
Use of linear and areal habitat models to establish and distribute beaver Castor fiber harvest quotas in Norway
(Journal article; Peer reviewed, 2013)In Norway the Eurasian beaver Castor fiber harvest is quota-regulated. Once the annual quota for each municipality has been determined it is distributed to landowner-organized beaver management units. Municipal wildlife ... -
Use of space and movement patterns in monogamous adult Eurasian beavers (Castor fiber)
(Journal article; Peer reviewed, 2004)Monogamy in mammals is characterized by reduced sexual dimorphism in morphology and behaviour. Ten pairs of Eurasian beaver Castor fiber were radio-tracked to test how far this concept can be applied to movement behaviour ... -
Utredning av alternative løsninger for rensing av avløpsvann fra spredt bosetning
(Working paper, 1980) -
Utslipp fra enkelthus i Breskelia, Bø i Telemark
(Working paper, 1979) -
Variation in the structure of Matteuccia struthiopteris populations in Lithuania
(Journal article; Peer reviewed, 2006)Demographic data and associated phytosociological and environmental variables were sampled from 25 populations dominated by the fern M. struthiopteris studied in different parts of Lithuania. The main aim was to study the ... -
Walking on the Dark Side: Anthropogenic Factors Limit Suitable Habitat for Gray Wolf (Canis lupus) in a Large Natural Area Covering Belarus and Ukraine
(Peer reviewed; Journal article, 2023)Due to successful conservation initiatives and legislations, the grey wolf (Canis lupus) is re-colonising its historic range in Europe. However, wolves have never been extirpated across large areas in Eastern Europe but ... -
Water body type and group size affect the flight initiation distance of European waterbirds
(Peer reviewed; Journal article, 2019)Human encroachment on nature grows constantly, increasing human-wildlife interactions. Flight initiation distance (FID, the distance at which animals flee from an approaching threat) is often used to measure antipredator ... -
Water chemistry, zooplankton and benthos in small lakes within the distribution area of the rare European pool frog Pelophylax lessonae (Camerano) in Norway
(Peer reviewed; Journal article, 2020)In June 2018, water chemistry, benthos and zooplankton were investigated in 7 small lakes/ponds within the key area of the European pool frog Pelophylax lessonae (Camerano) in Norway. The geographic distribution of the ... -
Wild and Farmed Arctic Charr as a Tourism Product in an Era of Climate Change
(Journal article; Peer reviewed, 2021)The topic investigated is the social-ecological system of Arctic charr (Salvelinus alpinus) fishing and aquaculture as a tourism product in an era of climate change. Arctic charr is a resilient salmonid species that was ... -
Will Trespassers Be Prosecuted or Assessed According to Their Merits? A Consilient Interpretation of Territoriality in a Group-Living Carnivore, the European Badger (Meles meles)
(Journal article; Peer reviewed, 2015-07-06)Socio-spatial interactions of Carnivores have traditionally been described using the vocabulary of territoriality and aggression, with scent marks interpreted as ‘scent fences’. Here, we investigate the role of olfactory ...