Blar i Institutt for natur, helse og miljø på utgivelsesdato
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Rensing av avløpsvann i jord spredt bebyggelse. Registrering av potensielle forsøksanlegg
(Working paper, 1981) -
Reinsdyrstammen på Hardangervidda for stor
(Journal article, 1981)Hardangervidda, in Southern Norway, is the largest mountain plateau in Europe (Fig. 1). It is approximately 10000 km2 in area and lies mostly between 1100 and 1300 m a.s.l. The topography and vegetational cover produce a ... -
Blitzfotografering av bevegelige objekter gjennom mikroskop
(Journal article, 1981)Ordinary microscopes can be adapted to fully automatic photomicroscopes for use with flash. An automatic small film camera with an autodynamic flash and extra equipment for microphotography is necessary. The camera's ... -
Samordna løsning for utslipp av avløpsvann, Breskelia, Bø, Telemark
(Working paper, 1983) -
Makrofotografering med blitz av objekter i mørkefelt
(Journal article; Peer reviewed, 1984) -
Territoriality and time budgets in beavers during sequential settlement
(Journal article; Peer reviewed, 1994)Beavers (Castor fiber) were sequentially released into a previously unoccupied area. The settlement of the animals approximated an ideal despotic distribution: they successively settled in rich habitat and then in poor ... -
European beaver, Castor fiber, pinned by a felled tree
(Journal article; Peer reviewed, 1996)The death of an adult European Beaver (Castor fiber) caused by a felled tree in Southeast Norway is reported. The trunk fell on the beaver's tail pinning it to the ground. -
Red fox, Vulpes vulpes, kills a European beaver, Castor fiber, kit
(Journal article; Peer reviewed, 1996)We observed an adult Red Fox (Vulpes vulpes) attack, kill and partially consume a 2-month-old female kit European Beaver (Castor fiber) near its lodge in Norway. The inner organs were consumed first. One adult beaver ... -
Differences in the vertical distribution pattern of Betula pubescens in Norway and its ecological significance
(Chapter; Peer reviewed, 1996)Several factors influence the altitudinal position of the climatic forest-limit. In addition to variations due to different "forest-limit" definitions, topographic factors are very important. In Western Norway, a range of ... -
Factors affecting scent-marking behavior in Eurasian beaver (Castor fiber)
(Journal article; Peer reviewed, 1997)We tested the hypothesis that a main function of territory marking in Eurasian beaver (Castor fiber) is defense of the territory. The results showed that. (1) beaver colonies with close neighbors scent-mark more often than ... -
Free-ranging Eurasian beavers, Castor fiber, deposit anal gland secretion when scent marking
(Journal article; Peer reviewed, 1998)Two adult free-ranging Eurasian Beavers (Castor fiber) were observed depositing anal gland secretion at the border of thei territory byeverting the "cloaca", protruding the anal gland openings and rubbing them against the ... -
Methods for live-trapping beaver (Castor spp.)
(Journal article; Peer reviewed, 1998)Effective live-trapping of beaver (Castor spp.) has been and will continue to be necessary for introductions, re-introductions, translocation for the preservation of populations, removal of nuisance beaver, and to obtain ... -
Comeback of the beaver Castor fiber : an overview of old and new conservation problems
(Journal article; Peer reviewed, 1998)Due to over-hunting c. 1200 Eurasian previous termbeaversnext term Castor fiber survived in eight relict populations in Europe and Asia at the beginning of the 20th century. Following hunting restrictions and translocation ... -
Scent-marking in the Eurasian beaver (Castor fiber) as a means of territory defense
(Journal article; Peer reviewed, 1998)Beaver (Castor spp.) normally scent mark by depositing castoreum and/or anal gland secretion on scent mounds close to the water's edge. The aim of this study was to investigate the hypothesis that the Eurasian beaver (C. ... -
Pine marten, Martes martes, as an Eurasian beaver, Castor fiber, lodge occupant and possible predator
(Journal article; Peer reviewed, 1998)We trapped three adult Eurasian Pine Martens (Martes martes) at an earlier trapped-out Eurasian Beaver (Castor fiber) lodge in southem Norway. At another site, Pine Marten feces containing remains of beaver claws and hair ... -
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 ... -
Landscape use and economic value of Eurasian beaver (Castor fiber) on large forest in southeast Norway
(Conference report, 1999)Though numerous studies of damage caused by beaver (Castor canadensis and C. fiber) to commercially managed forests have been conducted, few have incorporated the economic advantages beaver can create for forest owners. ... -
Responses of foraging Eurasian beavers Castor fiber to predator odours
(Journal article; Peer reviewed, 2000)The ability of Eurasian beavers Castor fiber to recognise different predator odours has received little research, nor has the use of predator odours to deter Eurasian beavers from damaging agricultural crops, fruit and ... -
A gross assessment of the suitability of selected Scottish riparian habitats for beaver
(Journal article; Peer reviewed, 2000)In November 1998 we were shown a selection of riparian habitats in Scotland and asked to assess their suitability for beaver based on our experience in working with beaver elsewhere. Though many examples of good beaver ... -
Eurasian beavers (Castor fiber) behavioral response to simulated territorial intruders
(Journal article; Peer reviewed, 2000)Eurasian beavers (Castor fiber) live in family groups that defend territories against other conspecifics. Part of this territorial defence involves constructing scent mounds near the stream bank within territories and ...