Fakultet for biovitenskap, fiskeri og økonomi: Recent submissions
Now showing items 761-780 of 5173
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Elevated antioxidant defence in the brain of deep-diving pinnipeds
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-16)While foraging, marine mammals undertake repetitive diving bouts. When the animal surfaces, reperfusion makes oxygen readily available for the electron transport chain, which leads to increased production of reactive oxygen species and risk of oxidative damage. In blood and several tissues, such as heart, lung, muscle and kidney, marine mammals generally exhibit an elevated antioxidant defence. ... -
Environmental niche overlap in sibling planktonic species Calanus finmarchicus and C. glacialis in Arctic fjords
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-08)Knowledge of environmental preferences of the key planktonic species, such as Calanus copepods in the Arctic, is crucial to understand ecosystem function and its future under climate change. Here, we assessed the environmental conditions influencing the development stages of Atlantic Calanus finmarchicus and Arctic Calanus glacialis, and we quantified the extent to which their niches overlap by ... -
Identification of New Purpuroine Analogues from the Arctic Echinodermata Pteraster militaris That Inhibit FLT3-ITD+ AML Cell Lines
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-13)Isolation of bioactive products from the marine environment is considered a very promising approach to identify new compounds that can be used for further drug development. In this work we have isolated three new compounds from the purpuroine family by mass-guided preparative HPLC; purpuroine K-M. These compounds where screened for antibacterial- and antifungal activity, antibiofilm formation and ... -
Inverse method applied to autonomous broadband hydroacoustic survey detects higher densities of zooplankton in near-surface aggregations than vessel-based net survey
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-10)Throughout all oceans, aggregations of zooplankton and ichthyoplankton appear as horizontal sound scattering layers (SSLs) when detected with active acoustic techniques. Quantifying the composition and density of these layers is prone to sampling biases. We conducted a net and trawl survey of the epipelagic fauna in northern Norway (70˚N) in June 2018 while an autonomous surface vehicle equipped ... -
Arbeidet mot en bærekraftig bygg- og anleggsbransje
(Master thesis; Mastergradsoppgave, 2022-12-01)Oppgaven skal synliggjøre hvordan en bransje som byggentreprenør, som i utgangspunktet er så ressurskrevende, arbeidet mot det stadig økende fokuset mot bærekraft og hvordan de tar samfunnsansvar og bærekraft inn i sin daglige drift. For å svare problemstillingen er det tatt utgangspunkt i Den Triple Bunnlinje og CSR. -
Bidrar selvkostprinsippet til en avpolitisering av vann- og avløpssektoren? En studie av norske kommuner og økonomistyringsprosesser tilknyttet vann og avløp
(Master thesis; Mastergradsoppgave, 2022-11-30)Denne studien omhandler styringsinformasjon i kommunale beslutningsprosesser. Norske kommuner står for en vesentlig del av produksjon, sysselsetting og etterspørselen i norsk økonomi. En stor del av kommunenes virksomhet foregår utenfor et effektivt fungerende marked. 18 prosent av kommunenes inntekter kommer inn gjennom gebyrer. Selvkostprinsippet som finansieringskilde betyr at en kommune beregner ... -
Heterochronic maturation of anatomical plugs for protecting the airway in rorqual whales (Balaenopteridae)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-14)Recently, a unique mechanism for protecting the airway during lunge feeding was discovered in rorqual whales (Balaenopteridae). This mechanism is based on an oral plug structure in the soft palate with similarities in musculo-fatty composition to the nasal plugs protecting the respiratory tract of rorquals from water entry and barotrauma during diving. As a follow-up, we present here a ... -
What is a fish? The life and legend of David L.G. Noakes
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-17)David Lloyd George Noakes (1942–2020) is best known for his insatiable curiosity, his quick wit and dry sense of humor, his scientific contributions to the field of animal behaviour, and his ability to form and maintain long-lasting connections. His research interests were vast but remained grounded in early life history, behaviour, social behaviour, the evolution of behaviour, behavioural genetics, ... -
Distinct latitudinal community patterns of Arctic marine vertebrates along the East Greenlandic coast detected by environmental DNA
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-20)Aim: Greenland is one of the places on Earth where the effects of climate change are most evident. The retreat of sea ice has made East Greenland more accessible for longer periods during the year. East Greenland fjords have been notoriously difficult to study due to their remoteness, dense sea ice conditions and lack of infrastructure. As a result, biological monitoring across latitudinal gradients ... -
Changes in humpback whale song structure and complexity reveal a rapid evolution on a feeding ground in Northern Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-09)Singing behaviour by male humpback whales (Megaptera novaeangliae) has traditionally been associated with low-latitude breeding grounds. However, in recent years, this vocal behaviour has been increasingly reported outside these areas. All singers in a given population sing the same version of a song and this song is continually evolving over time with modifications on different levels within the ... -
Bioassay-Guided Fractionation Leads to the Detection of Cholic Acid Generated by the Rare Thalassomonas sp.
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-20)Bacterial symbionts of marine invertebrates are rich sources of novel, pharmaceutically relevant natural products that could become leads in combatting multidrug-resistant pathogens and treating disease. In this study, the bioactive potential of the marine invertebrate symbiont Thalassomonas actiniarum was investigated. Bioactivity screening of the strain revealed Gram-positive specific antibacterial ... -
FTIR autecological analysis of bottom-ice diatom taxa across a tidal strait in the Canadian Arctic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-23)A recent study demonstrated that an Arctic tidal strait, where a shoaled and constricted waterway increases tidally driven sub-ice currents and turbulence, represents a “hotspot” for ice algal production due to a hypothesized enhanced ocean-ice nutrient supply. Based on these findings, we sampled the bottom-ice algal community across the same tidal strait between the Finlayson Islands within Dease ... -
Changing Business models for Sustainability: Role of drivers and dynamic capabilities in Arctic nature tourism
(Doctoral thesis; Doktorgradsavhandling, 2023-01-31)<p>This thesis investigates nature tourism companies, which strive to incorporate sustainability into their business models and change them to be more resilient. For this purpose, it adopts a dynamic perspective on business models by which companies address corporate sustainability which is understood here as a balance among environmental, social, and economic pillars as well as a sustainable ... -
Hvordan oppleves Lean som driftsstrategi? En undersøkelse blant medarbeidere i Forsvarsbygg og Forsvarsmateriell.
(Master thesis; Mastergradsoppgave, 2022-06-07)Temaet for masteroppgaven er hvordan ansatte i Forsvarsbygg og Forsvarsmateriell opplever Lean som driftsstrategi i sin arbeidshverdag. På bakgrunn av teori har vi utviklet følgende problemstilling: «Hvordan opplever de ansatte i Forsvarsbygg og Forsvarsmateriell Lean som driftsstrategi?». Vi har stilt følgende forskningsspørsmål for å svare på vår problemstilling: 1) Er det samsvar mellom den ... -
Identification of New Purpuroine Analogues from the Arctic Echinodermata Pteraster militaris That Inhibit FLT3-ITD+ AML Cell Lines
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-13)Isolation of bioactive products from the marine environment is considered a very promising approach to identify new compounds that can be used for further drug development. In this work we have isolated three new compounds from the purpuroine family by mass-guided preparative HPLC; purpuroine K-M. These compounds where screened for antibacterial- and antifungal activity, antibiofilm formation ... -
Pharmacokinetics of a long-acting subcutaneous eprinomectin injection in semi-domesticated reindeer (Rangifer tarandus tarandus) - a pilot study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-17)Reindeer (Rangifer tarandus tarandus) are exposed to the pathogenic parasitic nematode Elaphostrongylus rangiferi during grazing. The severity of disease is dose-dependent. Prophylactic anthelmintic treatment is needed to improve animal health and reindeer herding sustainability. Herds are traditionally only gathered once during the summer, requiring a drug with a persistent effect. In this study ... -
Perspectives on Rent Generation and Rent Appropriation in Fisheries
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-06)The article debates the origin of rent in natural-resource based industries (NRBIs) such as fisheries, and how the rent generated can be appropriated. The Norwegian fish harvesting industry is used to illustrate the arguments. It is argued that the industry-specific institutional framework of the fish harvesting industry positively affects the competitive forces of the industry, and thereby its ... -
Retail chain affiliation and time trend effects on inventory turnover in Norwegian SMEs
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-25)Inventory is a significant and important asset for retailers and represents what a store has to offer its customers for instant purchase; at the same time, considerable costs are associated with holding inventory. In this study, we use inventory turnover as a measure of inventory performance. We build upon previous research and use firm-specific measures to untangle the link between inventory ... -
Klimaendringer og virkninger på hovedøkosystem skog.
(Research report; Forskningsrapport, 2022-04-29) -
Climate Performance, Environmental Toxins and Nutrient Density of the Underutilized Norwegian Orange-Footed Sea Cucumber (Cucumaria frondosa)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-26)Low trophic species are often mentioned as additional food sources to achieve broader and more sustainable utilisation of the ocean. The aim of this study was to map the food potential of Norwegian orange-footed sea cucumber (Cucumaria frondosa). C. frondosa contained 7% protein, 1% lipids with a high proportion of polyunsaturated fatty acids, and a variety of micronutrients. The nutrient density ...