Sperm whales are elusive creatures; they spend much of their time out of sight, deep in the oceans. This makes them difficult to study, and previously, studies of their diet have mainly been stomach content analyses of stranded or caught individuals. However, DNA metabarcoding has the potential for solving this problem. This thesis examines the diet of sperm whales in the Norwegian Sea, of which we ...

Denne masteroppgaven undersøker effekten av innføring av hybride løsninger i lakseoppdrett for et norsk oppdrettsselskap, med sikte på å få en forståelse av hvordan innføringen av hybride løsninger kan påvirke klimagassutslipp. Oppgaven fokuserte spesielt på Scope 1- og Scope 2 utslipp fra Alsaker Fjordbruks aktiviteter, inkludert direkte utslipp fra oppdrettsanlegg og indirekte utslipp fra ...

Tematikken i denne masteroppgaven handler om kvinners underrepresentasjon i de styrende organer i organisasjonene innenfor fiskerinæringen. Formålet har vært å få innsikt i hvordan kvinner opplever å være en minoritet i faglag og salgslag, organisasjoner som til all tid har vært dominert av menn. Jeg har valgt et teoretisk perspektiv basert på kjønn, noe som har bidratt til å utforme problemstillingen ...

Zooplankton community composition of northern lakes is changing due to the interactive effects of climate change and recovery from acidification, yet limited data are available to assess these changes combined. Here, we built a database using archives of temperature, water chemistry and zooplankton data from 60 Scandinavian lakes that represent broad spatial and temporal gradients in key parameters: ...

The rising problem of plastic pollution is becoming one of the major environmental issues for the world. In the ocean, plastics undergo degradation into smaller microplastics (MPs) and nanoplastics (NPs). Wild fish and farmed salmon would likely be exposed to these NPs and MPs both through skin and through skin wounds. Keratocyte cells, located in the skin epithelial layer, are scavenger cells which ...

This qualitative, explorative case study presents a small and medium-sized enterprise (SME) in Norway that successfully pursued a dynamic ambidextrous growth strategy. The study applies a micro-foundation perspective and focuses on identifying and describing key internal drivers behind the group’s ambidextrous strategy. The empirical findings underscore ambidextrous owner-managers’ pivotal role ...

Cold-water lakes situated in high latitudes and altitudes have pivotal socio-ecological importance both globally and locally. However, they are increasingly threatened by multiple anthropogenic stressors, such as climate change, hydropower and invasive species. The development of efficient management strategies is therefore urgently needed and requires a comprehensive understanding of the factors ...

The push broom design of an underwater hyperspectral imaging (UHI) instrument makes it possible to measure angle-resolved spectral radiance L(λ)in a plane. We describe the characterization of a commercial UHI instrument (UHI-4, Ecotone AS, Norway) and the spectral, geometric, and radiometric calibration transfer for measuring L(λ) in absolute units [µW cm⁻² nm⁻¹ sr⁻¹ ]. ...

Coastal and adjacent shelf waters are generally highly productive ecosystems harboring important ecological processes and exposed to a range of anthropogenic pressures from land-based and marine sectors. Ensuring that the cumulative pressures from human activities do not cause unacceptable, permanent harm to the ecosystem is challenging but crucial for sustainable management of these regions. ...

Marine-terminating glacier fjords play a central role in the transport of oceanic heat toward ice sheets, regulating their melt. Mixing processes near glacial termini are key to this circulation but remain poorly understood. We present new summer measurements of circulation and mixing near a marine-terminating glacier with active sub-glacial discharge. 65% of the fjord's vertical overturning circulation ...