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norskFakultet for biovitenskap, fiskeri og økonomi: Recent submissions
Now showing items 41-60 of 5162
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Mapping and assessing Eelgrass (Zostera marina) distribution and growth parameters in two Ramsar-sites
(Master thesis; Mastergradsoppgave, 2024-05-15)Eelgrass (Zostera marina) is a keystone species in coastal ecosystems that provides several crucial ecosystem services such as, habitat formation, carbon sequestration, and coastal protection. This thesis aims to map and assess the distribution of eelgrass and the performance parameters, eelgrass coverage, epiphyte coverage, and shoot height at two Ramsar sites: Sørkjosleira, and Kobbevågen in ... -
Grazed vs the Ungrazed: Herbivory Effects on Leaf Nutrient Content and Chemical Defense
(Master thesis; Mastergradsoppgave, 2024-05-15)Despite growing evidence of herbivory's influence on plant nutrient dynamics in the Arctic tundra, the short-term effects on leaf nutrient and phenolics contents across different tundra habitats and dominant plant species remain underexplored. This study enhances our understanding by analyzing the impacts of a 2-year herbivore exclusion (involving Svalbard reindeer and migratory geese) on ... -
Estimating effects of river runoff, predation, and fish carcasses on intertidal macrobenthic community and food-web structure in a sub-Arctic estuary
(Master thesis; Mastergradsoppgave, 2024-05-15)Coastal benthic organisms play an essential role in many ecosystem functions, such as organic matter utilization and regeneration of nutrients. In northern Norway, coastal ecosystems experience snowmelt-induced increased river runoff in early summer, arrival of poleward migrating predators, and invasive pink salmon runs, potentially affecting macrobenthic communities and food-web structures. This ... -
Growth responses of seedlings along encroachment gradients of the allelopathic plant Empetrum nigrum
(Master thesis; Mastergradsoppgave, 2024-05-14)Empetrum nigrum is a native evergreen shrub distributed in alpine and circumpolar areas that is currently encroaching into new habitats. This is an allelopathic plant that releases secondary metabolites, which has a negative impact on seed germination and seedling growth. The species has been recorded to expand in altitude and latitude parallel to a warmer climate and is encroaching into new habitats. ... -
Spatial segregation by sympatrically breeding Antarctic and Snow Petrels.
(Master thesis; Mastergradsoppgave, 2024-05-14)Sympatrically breeding species may face intense competition for resources, which can lead to various forms of segregation to mitigate competitive pressures. Segregation of space or habitats is one possible strategy, particularly when species share similar diets and foraging behaviors. This study examines the differences in space and habitat use between Antarctic and Snow Petrels (Thalassoica ... -
Motivations and Effects of Volunteer Divers Restoring Norwegian Kelp Forests
(Master thesis; Mastergradsoppgave, 2024-05-14)Kelp forests are in decline worldwide due to increasing anthropogenic pressures. Along the coastline of Northern Norway, spanning 15,000 kilometers, sea urchins have transformed the seabed from biodiverse kelp forests into barren grounds dominated by sea urchins. To address this issue, the initiative The Guardians of the Kelp engages volunteer divers in Northern Norway in monthly clearing events to ... -
Arctic Shrub Expansion: Implications for Stream Benthic Invertebrate Community Structure & Function
(Master thesis; Mastergradsoppgave, 2024-05-15)The Arctic is rapidly warming and this increase in temperature has been found to drive range expansion of tall shrubs in the Arctic tundra ecosystems. Although the consequences of shrub expansion have been studied in the terrestrial tundra, effects on tundra stream ecosystems remain understudied. Riparian tall shrubs, such as willows, can provide stream ecosystems with leaf litter and shade, enhancing ... -
Maturation patterns and genetic diversity of the spinytail skate Bathyraja spinicauda
(Master thesis; Mastergradsoppgave, 2024-05-14)With the expansion of fisheries into deeper waters and climate change, it is increasingly important to determine the status of the species affected by these changes. One of these species is the spinytail skate Bathyraja spinicauda, an understudied skate species with vulnerable life history traits such as slow maturation and a low number of offspring. To address the lack of basic knowledge about the ... -
Lost and Found: Reassessing Ringed Seal Abundance in a Key Fjord System in Svalbard After a 20-Year Hiatus
(Master thesis; Mastergradsoppgave, 2024-05-15)Ringed seals (Pusa hispida) in Svalbard, Norway, are thought to be declining due to the impacts of climate change in the region, particularly due to a significant reduction in the extent of landfast sea ice that they rely on for breeding. The only available survey of ringed seals in Svalbard took place in 2002, so is now over twenty years old. Here, we address this data gap by conducting UAV aerial ... -
Hybridkontor i oljeselskap
(Master thesis; Mastergradsoppgave, 2023-12-21)Denne masteroppgaven undersøker hvordan bruk av en hybridkontormodell, hvor ansatte kan tilbringe noen dager i uken på hjemmekontor, påvirker ansattes arbeidsytelse i oljeselskapet Okea ASA. Studien fokuserer på overgangen til hybride arbeidsformer etter covid-19-pandemien. For å vurdere påvirkning på arbeidsytelse undersøkes faktorer innenfor områdene arbeid-hjem balanse, motivasjon og lederstøtte. ... -
Hvilke suksessfaktorer kan bidra til etterlevelse av anskaffelsesregelverket i norske kommuner?
(Master thesis; Mastergradsoppgave, 2023-11-30)Norske kommuner foretok innkjøp for mer enn 240 milliarder kroner i 2022. Disse innkjøpene reguleres av lov om offentlige anskaffelser, som blant annet har som formål å fremme effektiv bruk av samfunnets ressurser. Denne målsetningen operasjonaliseres gjennom et omfattende regelverk som inneholder bestemte prosedyrer for hvordan det offentliges innkjøp skal gjennomføres. Dersom regelverket brytes, ... -
Verdsettelse Equinor ASA
(Master thesis; Mastergradsoppgave, 2023-11-25)Oppgavens hovedformål og problemstilling er å kartlegge underliggende verdier i Equinor ASA ved årsslutt 2021, og basert på daværende aksjekurs på Oslo Børs anbefale kjøp, hold eller salg av aksjen. Studiet er en dokumentstudiet med bruk av offentlige kilder. Prosessen for kartlegging av underliggende verdier er utført gjennom 4 hovedprosesser. Som et første steg i kartleggingen er det utført en ... -
Konkurransekrefter i USV markedet
(Master thesis; Mastergradsoppgave, 2023-11-24)Oppgaven omhandler å skape et grunnlag for strategiutvikling i teknologibransjer. En av byggeklossene i strategiutvikling er konkurransekrefter. Etter at Porter’s Five Forces ble publisert på 1980-tallet har betydningen og valg av konkurransekrefter vært diskutert. Temaet er fortsatt aktuelt i dag. Hvilke konkurransekrefter er det som er med på å påvirke en teknologibransje i dagens globaliserte ... -
Verdsettelse av Nordic Semiconductor ASA
(Master thesis; Mastergradsoppgave, 2023-11-22)Denne avhandlingen tar for seg en verdsettelse av Nordic Semiconductor ASA (NOD). Vi har ønsket å estimere aksjeverdien til NOD den 31.12.22 sammen med en anbefaling om å kjøpe, holde eller selge. Metoden vi har benyttet har vært å gjennomføre historisk regnskapsanalyse og strategisk selskapsanalyse som grunnlag for en diskontert kontantstrømanalyse. Sistnevnte vektes deretter mot en komparativ ... -
Local food systems and community development: a symbiotic relation? A case study of three rural municipalities in Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-20)Policy makers and researchers are increasingly emphasising the need for more diversified and localised food systems. This study investigates relations between local food systems and community development, revealing how local food is linked with identity, social relations, and community pride. We also address barriers and enablers for developing such links. We conducted an in-depth case study of local ... -
Ledelse av sesongmedarbeidere
(Master thesis; Mastergradsoppgave, 2019-06-20)Tema for denne oppgaven var ledelse av sesongmedarbeidere i reiselivsnæringen. Reiselivsnæringen i Norge og spesielt i Nord-Norge har de siste årene hatt en enorm vekst. I opplevelsesbransjen har sysselsettingen følgelig hatt en økning, hvor det er flere ansatte i sesong enn ellers i året. Jeg ønsket derfor å studere hvordan lederne i opplevelsesbransjen i Troms beskrev ledelse av sesongmedarbeidere, ... -
Environmental drivers of increased ecosystem respiration in a warming tundra
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-17)Arctic and alpine tundra ecosystems are large reservoirs of organic carbon1,2. Climate warming may stimulate ecosystem respiration and release carbon into the atmosphere3,4. The magnitude and persistency of this stimulation and the environmental mechanisms that drive its variation remain uncertain5,6,7. This hampers the accuracy of global land carbon–climate feedback projections7,8. Here we synthesize ... -
Life starts with plastic: High occurrence of plastic pieces in fledglings of northern fulmars
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-11)Plastic pollution threatens many organisms around the world. In particular, the northern fulmar, Fulmarus glacialis, is known to ingest high quantities of plastics. Since data are sparse in the Eurasian Arctic, we investigated plastic burdens in the stomachs of fulmar fledglings from Kongsfjorden, Svalbard. Fifteen birds were collected and only particles larger than 1 mm were extracted, characterised ... -
Rapid Ice‐Wedge Collapse and Permafrost Carbon Loss Triggered by Increased Snow Depth and Surface Runoff
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-16)Thicker snow cover in permafrost areas causes deeper active layers and thaw subsidence, which alter local hydrology and may amplify the loss of soil carbon. However, the potential for changes in snow cover and surface runoff to mobilize permafrost carbon remains poorly quantified. In this study, we show that a snow fence experiment on High‐Arctic Svalbard inadvertently led to surface subsidence ... -
Dechloranes and chlorinated paraffins in sediments and biota of two subarctic lakes
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-16)Our understanding of the environmental behavior, bioaccumulation and concentrations of chlorinated paraffins (CPs) and Dechloranes (Dec) in the Arctic environment is still limited, particularly in freshwater ecosystems. In this descriptive study, short chain (SCCPs) and medium chain (MCCPs) CPs, Dechlorane Plus (DP) and analogues, and polychlorinated biphenyls (PCBs) were measured in sediments, ...
