Fakultet for biovitenskap, fiskeri og økonomi: Nye registreringer
Viser treff 381-400 av 5171
-
Sea-ice decline could keep zooplankton deeper for longer
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-28)As Arctic sea ice deteriorates, more light enters the ocean, causing largely unknown effects on the ecosystem. Using an autonomous biophysical observatory, we recorded zooplankton vertical distribution under Arctic sea ice from dusk to dawn of the polar night. Here we show that zooplankton ascend into the under-ice habitat during autumn twilight, following an isolume of 2.4 × 10<sup>−4</sup> ... -
Ghost fishing efficiency by lost, abandoned or discarded pots in snow crab (Chionoecetes opilio) fishery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-07)Marine pollution by lost, abandoned or otherwise discarded fishing gear (ALDFG) often has negative impact on the ecosystem through plastic pollution and continuous capture of marine animals, so-called “ghost fishing”. ALDFG in pot fisheries is associated with high ghost fishing risk. The snow crab (Chionoecetes opilio) pot fishery is conducted in harsh weather conditions increasing the risk of ... -
Heavy Metals in Salt Marsh Sediments of Porteresia Bed along the Karnafully River Coast, Chittagong
(Journal article; Tidsskriftartikkel; Peer reviewed, 2012-09-30)Heavy metal (Cu, Zn, Cd, Pb and Fe) concentrations in salt marsh sediments of the Karnafully River coast were investigated in this study. Sediment samples of four different sites were analysed for selected heavy metals by AAS (atomic absorption spectrophotometry). The mean values of heavy metals were 45.79 µg/g for Cu, 105.0 µg/g for Zn, 0.43 µg/g for Cd, 26.70 µg/g for Pb and 3297.38 µg/g for Fe ... -
Management, markets and politics: Statistical screening for historical footprints in Arctic coal mining
(Journal article; Tidsskriftartikkel; Peer reviewed, 2011-11-29)The paper looks at the economic performance of the main (coal mining) company operating in Svalbard based on time series data from 1922 to 2006 and uses statistical techniques to detect structural breaks in economic indicators decomposed into components that the company control or influence and components that are exogenous. The analysis suggests distinctive historical periods and illustrates that ... -
Nasjonalt kvalifikasjonsrammeverk - riktig intensjon, men feil virkemiddel
(Journal article; Tidsskriftartikkel; Peer reviewed, 2011-02-11)Artikkelen stiller spørsmål om standardiserte læringsutbyttebeskrivelser på nasjonalt nivå kan hjelpe studenter til å oppnå et bedre kognitivt læringsutbytte. En endring i måten å utforme læreplaner på (input til undervisningsprosessen) leder ikke til økt læringsutbytte (output for studentene).<p> <p>Bruk av ISO 9001 som rammeverk for å styre en utdanningsinstitusjons tjenesteproduksjon avdekker ... -
The roles of brain lipids and polar metabolites in the hypoxia tolerance of deep-diving pinnipeds
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-14)Lipids make up more than half of the human brain's dry weight, yet the composition and function of the brain lipidome is not well characterized. Lipids not only provide the structural basis of cell membranes, but also take part in a wide variety of biochemical processes. In neurodegenerative diseases, lipids can facilitate neuroprotection and serve as diagnostic biomarkers. The study of organisms ... -
Økonomiske konsekvenser av økt skattekostnad for en havbruksaktør
(Master thesis; Mastergradsoppgave, 2023-05-29)Havbruksnæringen er en av de mest lønnsomme næringene i Norge. De naturgitte fortrinnene i kombinasjon med reguleringer fra myndighetene gir opphav til en ekstraordinær avkastning. På bakgrunn av dette foreslår regjeringen å innføre grunnrenteskatt på havbruk. Innføring av grunnrenteskatt og endringer i verdsettelsesregler av havbrukstillatelser gjør at havbruksaktører og deres eiere stilles overfor ... -
Herbivory and warming have opposing short-term effects on plant-community nutrient levels across high-Arctic tundra habitats
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-11)Environmental changes can rapidly alter standing biomass in tundra plant communities; yet, to what extent can they modify plant-community nutrient levels? Nutrient levels and their changes can affect biomass production, nutrient cycling rates and nutrient availability to herbivores. We examined how environmental perturbations alter Arctic plant-community leaf nutrient concentrations (percentage of ... -
Ecological Drivers of Mercury Bioaccumulation in Fish of a Subarctic Watercourse
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-02)Mercury (Hg) is a serious concern for aquatic ecosystems because it may biomagnify to harmful concentrations within food webs and consequently end up in humans that eat fish. However, the trophic transfer of mercury through the aquatic food web may be impacted by several factors related to network complexity and the ecology of the species present. The present study addresses the interplay between ... -
Illegal fishing: A challenge to fisheries management in Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-30)The management of the Norwegian Northeast Atlantic cod fishery has in many ways been a success story; quotas have been high (but now declining), profitability has been higher than most other industries and there is great interest among young recruits to enter the fishery. However, over the last decade illegal fishing of allocated quotas and black-market transactions throughout the value chain ... -
Influenseres påvirkning på intensjon til å spise fisk
(Master thesis; Mastergradsoppgave, 2023-06-01)Bruk av influensere til markedsføring har vist seg å være svært effektivt til å påvirke forbrukere innenfor ulike kontekster. Ettersom det i dag er ønskelig å øke konsum av fisk blant nordmenn, vil det kunne være aktuelt å benytte influensere i markedsføring av fisk. Formålet med denne studien er å undersøke hvordan influensere påvirker holdning, sosial norm og intensjon til å spise fisk hos unge ... -
Financial incentives in Norwegian somatic hospitals - An early look at how hospitals respond to the profit incentive in Norway
(Master thesis; Mastergradsoppgave, 2023-06-01)Background: The cost brought about by healthcare systems in western society is high and likely to increase in the future. Governments with activity-based funding (ABF) systems attempt to increase efficiency by introducing financial incentives, using internal market mechanisms for hospitals under the umbrella of new public management. The prospective payment system in Norway nudges hospitals into ... -
Can machine learning beat the Norwegian stock market?
(Master thesis; Mastergradsoppgave, 2023-05-31)Multiple studies on the performance of machine-learning stock portfolios have shown the efficacy of machine-learning portfolios on large stock exchanges, especially the American- and Chinese market. Fewer studies have been conducted on smaller cap markets, which consists of smaller, less-liquid investment options. The purpose of this thesis is therefore to explore the possibilities to beat the ... -
Taksonomiens betydning for nordnorsk næringsliv - en revolusjon eller evolusjon?
(Master thesis; Mastergradsoppgave, 2023-05-31)For å finansiere overgangen til klimanøytralitet innen 2050, har EU utarbeidet en handlingsplan for bærekraftig finans. Tiltakene i handlingsplanen skal bidra til å styre kapital mot bærekraftige aktiviteter, øke transparens i finansmarkedene og redusere risikoen for grønnvasking. Det mest sentrale virkemidlet for å oppnå dette er opprettelsen av taksonomien for bærekraftige økonomiske aktiviteter. ... -
Næringsklynger i nord - hvilke barn leker best, og hvem vinner mest?
(Master thesis; Mastergradsoppgave, 2023-05-31)I senere år har dannelsen av formaliserte næringsklynger økt i omfang, blant annet for å fremme innovasjon og bidra til en bærekraftig økonomi for Norge etter oljen. Denne mastergradsavhandlingen har som formål å undersøke hvordan strukturelle forhold i næringsklynger påvirker samarbeidet mellom medlemsbedriftene, samt hvilke effekter medlemmene opplever som følge av klyngemedlemskapet. Oppgaven ... -
In search of Safe Havens for US and Scandinavian stock indices.
(Master thesis; Mastergradsoppgave, 2023-05-24)Using correlation and rolling correlation, we determine that Gold, Bitcoin, Silver, Brent crude oil, Gas, and Corn fail as Safe haven assets for the US, Norwegian, Danish, and Swedish stock markets during the Covid-19 pandemic and the Russia-Ukraine crisis. Instead, these assets act as weak/strong diversifiers for selective indices during the sample period 2014-2023. In the long-term perspective ... -
What do the Great Barrier Reef management and Norwegian spatial fisheries management have in common?
(Conference object; Konferansebidrag, 2018)What do the Great Barrier Reef management and Norwegian spatial fisheries management have in common? The presentation addresses the importance of governmentality (Foucault 1978), understood as the art of governing for successful marine governance (MG). Management of the Great Barrier Reef and the Norwegian spatial management of fisheries are used as examples of systems that depends on and foster ... -
LC-MS based dereplication and isolation of compound from Arctic marine bryozoan Dendrobeania murrayana
(Conference object; Konferansebidrag, 2018)The new guanidine based alkaloid Dendrobeaniamine A was isolated from the organic crude extract of the Arctic marine bryozoan <i>Dendrobeania murrayana</i>. The structure was determined by interpretation of data from 1D and 2D NMR spectroscopic methods and mass spectrometry (HR-MS) analysis. Dendrobeaniamine A did not show any biological activities in the applied bioassays. Further bioactivity ... -
First analysis of an Arctic sea ice meiofauna food web based on abundance, biomass and stable isotope ratios
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-23)Particulate organic carbon (POC) produced in sea ice is often included in stable isotopic food web studies of polar seas as a single value of particulate organic matter (POM), i.e. ‘ice POM’. During 10 field trips to landfast ice off Alaska’s north coast, we examined the seasonal contribution of sea ice-associated meiofauna to total POM and the trophic structure within the sea ice using bulk carbon ... -
Relating polar bears killed, human presence, and ice conditions in Svalbard 1987–2019
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-28)Conflicts between humans and polar bears have been predicted to increase as polar bear prime habitat, sea ice, is decreasing. In Svalbard, a strict protection and control schemes have secured near complete records of bears killed and found dead since 1987. We analyzed the trend in the number of kills and related this to human visitation to the archipelago. We found a slight decrease in the number ...