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norskFakultet for biovitenskap, fiskeri og økonomi: Recent submissions
Now showing items 401-420 of 5171
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Dendrobeaniamine A, a new alkaloid from the Arctic marine bryozoan Dendrobeania murrayana
(Conference object; Konferansebidrag, 2019)Chemistry guided purification of the organic extract of the Arctic marine bryozoan <i>Dendrobeania murrayana</i> yielded one new compound, Dendrobeaniamine A, and it was present in abundant amounts in the organic extract. Dendrobeaniamine A is a fusion of long chain aliphatic fatty acid and the cationic amino acid residue arginine.The bioactivity and natural function of this compound thus remain to ... -
Foraging movements of humpback whales relate to the lateral and vertical distribution of capelin in the Barents Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-24)Understanding how individual animals modulate their behaviour and movement patterns in response to environmental variability plays a central role in behavioural ecology. Marine mammal tracking studies typically use physical environmental characteristics that vary, and/or proxies of prey distribution, to explain predator movements. Studies linking predator movements and the actual distributions ... -
How risky is it? Perceived risk among Norwegian backcountry riders
(Conference object; Konferansebidrag, 2018)We use a hypothetical choice scenario to analyzefactors that affect the perceived risk of potentially risky backcountry terrain.Our results show thatfactors, which are expected to affect the objective level of risk (e.g., backcountry travel skills and experience), are correlated with the perceived level of risk. However, we also find suggestive evidence that social factors, which should not affect ... -
Are they experts? Self-assessed backcountry skills among backcountry skiers in Norway and North America
(Conference object; Konferansebidrag, 2018)We analyze how backcountry skiers’ perceived ability to manage avalanche terrain correlate with more objective measures of experience and skills, among 1209 backcountry riders in Norway and North America. We further analyze if self-assessed backcountry skills are affected by past experience of avalanches and close calls, risk attitudes, and demographics. Our results suggest that self-assessed skill ... -
Do recent trends in forecasted avalanche danger affect our perception of the current avalanche hazard?
(Conference object; Konferansebidrag, 2018) -
Slow progress towards a better regime for environmental impact assessments
(Conference object; Konferansebidrag, 2018)The purpose of the presentation is to give an overview of the status of environmental assessments in international law, and to review the progress of a global and a regional process in trying to improve the current regime. The international regime for environmental impact assessments (EIA) in the Arctic Ocean is symptomatic for the situation in most regional seas. There is a predominance of ... -
Identifying transferable skills to enhance Early Career Researchers employability
(Conference object; Konferansebidrag, 2018)Doctoral candidates are facing a diverse employment landscape that shifted significantly in the last decades, with less than 30 % of doctoral graduates working in academia or in research and development related jobs. In addition to becoming more inter-sectoral, working environments are becoming increasingly inter-national and inter-disciplinary. This development can make the employment requirements ... -
Conditions for Implementing Innovating Telemedicine Procedures After Hip Arthroplasty
(Chapter; Bokkapittel, 2020-10-13)Telemedicine technology offers a wide range of possibilities for improving various forms of healthcare services. These technologies can support and economize healthcare service processes including medical consultations, preparation for medical treatment and in the post-operative period. The increasing number of older people in developed countries increases the importance of telemedicine as a way ... -
The effect of CO2, total ammonia nitrogen and pH on growth of juvenile lumpfish (Cyclopterus lumpus)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-12)The objective of this study was to examine the effects of CO<sub>2</sub>, total ammonia nitrogen (TAN: nitrogen bound as either NH<sub>3</sub> or NH<sub>4</sub><sup>+</sup>) and pH on the growth and survival of juvenile lumpfish in a two-month growth study. The results demonstrate the complex interactions of these water quality variables. The specific growth rate (SGR) of the lumpfish was progressively ... -
Marine-derived products as functional feed additives in aquaculture: A review
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-27)The aquaculture industry is expanding to meet the daily requirements of humanity from high-quality seafood. In this regard, intensive aquaculture systems are suggested, resulting in high production but being challenged with immunosuppression and disease invaders. Antibiotics were used for a long time to protect and treat aquatic animals; however, continuous use led to severe food safety issues, ... -
Validation of pop-up satellite archival tags (PSATs) on Atlantic cod (Gadus morhua) in a Greenland fjord
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-28)Traditional tagging techniques are simple and cost-effective, but inferences require recaptures and data on movement/migration are limited to a start and end position at unpredictable intervals. Pop-up satellite archival tags (PSATs) offer other opportunities, as they provide positions at pre-programmed times and collect on-route data, which can be used to describe position, behavior, and habitat ... -
Diversity and ecology of aphyllophoroid fungi on driftwood logs on the shores of the Baltic Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-26)Driftwood is woody debris that is floating on the sea or brought onto the shore by the sea. It can have a natural origin but often it originates from human activities. Driftwood has a significant ecological role as a microhabitat for a large range of species. Dead-wood-associated aphyllophoroid fungi on driftwood have been studied rather little globally, and there are hardly any studies conducted ... -
Determination of pH in pre rigor fish muscle - method matters
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-06)The determination of post mortem muscle pH are often carried out in studies on how pre-slaughter handling influences the development of rigor mortis and the quality of the fish products. The analysis might be performed by inserting a pH-electrode into the intact flesh or using a suspension containing a minced muscle sample. Although it has been known for a long time that mincing muscle tissue ... -
Contagious behaviour or not? Tourists' skills and practices in a Norwegian church
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-23)Tourist-to-tourist interaction takes place in many forms at attractions such as museums, churches and historical sites. In many settings, this interaction is a well-functioning part of the tourist experience, where tourists conform to the social norms that govern the attraction. However, interaction with other tourists can also devalue the experience; their presence may be perceived as challenging ... -
Analyzing the Geometry and Dynamics of Viral Structures: A Review of Computational Approaches Based on Alpha Shape Theory, Normal Mode Analysis, and Poisson–Boltzmann Theories
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-13)The current SARS-CoV-2 pandemic highlights our fragility when we are exposed to emergent viruses either directly or through zoonotic diseases. Fortunately, our knowledge of the biology of those viruses is improving. In particular, we have more and more structural information on virions, i.e., the infective form of a virus that includes its genomic material and surrounding protective capsid, and ... -
Research progress on gut health of farmers teleost fish: a viewpoint concerning the intestinal mucosal barrier and the impact of its damage
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-05)The intestinal mucosal barrier plays a critical role in the maintenance of host health. In farmed teleost fish, the intestinal epithelium is challenged by a number of factors, leading to damage of the intestinal mucosal barrier. The pathogenesis of intestinal mucosal barrier damage in most farmed teleost fish has been associated with cell death, mainly including apoptosis, pyroptosis, necroptosis ... -
Responding to global warming: New fisheries management measures in the Arctic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-01)The northernmost commercial fisheries in the world take place in the northern Barents Sea up to around 80° N. This is an area where global warming is particularly intense and where large, previously ice-covered areas are now more accessible to fishing vessels. This raised questions whether existing conservation and management measures are adequate. In this paper, we discuss the process of developing ... -
Estimating Surface Concentrations of Calanus finmarchicus Using Standardised Satellite-Derived Enhanced RGB Imagery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-08)Calanus finmarchicus is a keystone zooplankton species that is commercially harvested and is critical in sustaining many important fisheries in the North Atlantic. However, due to their patchy population distributions, they are notoriously difficult to map using traditional ship-based techniques. This study involves the use of a combined approach of standardized ocean colour imagery and radiative ... -
Weak seasonality in benthic food web structure within an Arctic inflow shelf region
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-23)The Arctic Ocean is characterized by pronounced seasonality in the quantity and quality of organic matter exported from the surface ocean. While it is well established that changes in food availability can alter the abundance, biomass and function of benthic organisms, the impact on food web structure is not well studied. We used bulk carbon and nitrogen stable isotope analysis to assess the quantity ... -
The Image Fallacy: Rethinking the Tragedy of the Commons
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-05)An image is what we have in our head and what we make up in an allegory, a name, a metaphor, a text, a map or in a drawing. None of these should be confused with the thing that is being imagined. They are not the real thing, just our imaginations of it. Still, we could not do without them, for instance when governing small-scale fisheries. They make us understand what we are up to and the track we ...
