Now showing items 61-80 of 5427

    • Occurrence of the invasive pink salmon (Oncorhynchus gorbuscha, Walbaum 1792) in Greenland 2020 and 2021 as revealed using citizen science, snorkeling, and environmental DNA metabarcoding of fishes in the Kapisillit River 

      Nielsen, Julius; Nygaard, Rasmus; Brandner, Melissa Michelle; Præbel, Kim (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-07-17)
      The occurrence of the invasive pink salmon (Oncorhynchus gorbuscha, Walbaum 1792) in Greenland was initially described in 2019 using social media to collect data on their presence. In this study we continue data collection through social media and initiate a monitoring program of the Kapisillit River in Southwest Greenland using snorkeling and environmental DNA (eDNA) metabarcoding in 2020 and 2021. ...
    • Acoustic mapping reveals macroalgal settlement following a retreating glacier front in the High Arctic 

      Gonzalez Triginer, Victor; Beck, Milan; Sen, Arunima; Bischof, Kai; Damsgård, Børge (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-10)
      Vegetated coastal marine ecosystems are projected to expand northwards in the Arctic due to climate change, but the mechanisms for this expansion are complex and nuanced. Macroalgal biomass in the littoral areas of Svalbard has been increasing, but data at the glacier fronts are very scarce. In this study, we use hydroacoustics and video validation from an unmanned surface vehicle to survey macroalgal ...
    • Leaving the niche: Recommendations for mainstreaming Low Trophic Aquaculture in countries around the Atlantic basin 

      Tett, Paul; Charalambides, George; Franco, Sofia C.; Hughes, Adam D.; Mikkelsen, Eirik Inge; Nielsen, Kåre Nolde; Routledge, Eric Arthur Bastos; Nielsen, Pernille; James, Philip (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-01)
      Low Trophic Aquaculture (LTA) is the farming of aquatic organisms such as primary producers (e.g., seaweeds) and primary consumers (e.g. bivalves). Despite recognition as a key pathway to the provision of sustainable food from the oceans, many forms of LTA around the Atlantic basin remain in the niche stage of socio-technical evolution. With governance regarded as a limiting factor to LTA development, ...
    • A modus operandi for sustainable-tourism transformations 

      Lupini, Sara; Bertella, Giovanna; Font aulet, Xavier (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-11)
      In this article, we identify and discuss unifying principles to co-design transformational sustainable-tourism interventions through participatory methodologies. We conduct a meta-ethnographic synthesis of the emerging relevant tourism literature (14 articles), and we propose five methodological requirements that underpin effective interventions for sustainable tourism transformations. The requirements ...
    • Bilberry metabolomic and proteomic profiling during fruit ripening reveals key dynamics affecting fruit quality 

      Nguyen, Nga; Bergmann, Ulrich; Jaakola, Laura Elina; Häggman, Hely; Jokipii-Lukkari, Soile; Toth, Katalin (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-16)
      Bilberry (Vaccinium myrtillus L.) is a wild berry species that is prevalent in northern Europe. It is renowned and well-documented for its nutritional and bioactive properties, especially due to its anthocyanin content. However, an overview of biological systems governing changes in other crucial quality traits, such as size, firmness, and flavours, has received less attention. In the present study, ...
    • Formative feedback through digital MCQs: Students´ perceived learning in a bachelor-level physiology course 

      Sundset, Monica Alterskjær; Norli, Nora Qi Baskår; Bjørndal, Cato; Svensen, Camilla (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-29)
      Feedback is defined as a process in which students can benefit from information about their own performance to improve the quality of their work and learning strategies. This case study examines how students in a bachelor-level physiology course experienced their learning when receiving formative feedback through digital multiple-choice questions (MCQs) in the web-based learning platform Canvas. The ...
    • Veien mot en digital fremtid: bruk e-bøker i høyere utdanning 

      Svihus, Cathrine (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-16)
      E-bøker har blitt et stadig viktigere element i høyere utdanning, og forståelsen av hvordan studenter oppfatter og bruker disse ressursene er avgjørende for å videreutvikle pedagogiske strategier. Til tross for bred tilgjengelighet via databaser og konsortier som BIBSYS er faktisk bruk av e-bøker ofte lav. Dette gapet mellom tilgjengelighet og bruk kan håndteres gjennom målrettede tiltak. Artikkelen ...
    • Molecular adaptations to diving-induced hypoxia. Diurnal variations in cellular and mitochondrial hypoxia tolerance in the hooded seal (Cystophora cristata) 

      Ciccone, Chiara (Doctoral thesis; Doktorgradsavhandling, 2024-11-26)
      <p>Hypoxia may be defined as a state of O<sub>2</sub> deficiency in which cellular energetic homeostasis is challenged. Prolonged exposure to hypoxia can lead to a bioenergetic collapse as it induces a switch from mitochondrial oxidative metabolism to a mainly glycolytic one, which is not sustainable over time. Recent evidence shows that mitochondrial metabolic response to hypoxia also depends on ...
    • Can pots be an alternative fishing gear to gillnets? A Mediterranean case study 

      Virgili, M.; Petetta, A.; Herrmann, Bent; Cerbule, Kristine; Guicciardi, S.; La Manna, Manna; Malvarosa, L.; Li Veli, Veli; Barone, G.; Lucchetti, A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-12)
      Small-scale coastal fisheries in the Mediterranean often employ gillnets, a widely used gear worldwide. The disadvantages of gillnets in this fishery include high bycatch levels of unwanted species and consequent discards. Moreover, spatial conflict with other gears and dolphin depredation often results in considerable economic loss. Alternative fishing methods are being tested. This study investigated ...
    • Public sector entrepreneurship: an integrative review 

      Vivona, Roberto; Clausen, Tommy Høyvarde; Gullmark, Petter; Cinar, Emre; Demircioglu, Mehmet Akif (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-23)
      Public sector entrepreneurship (PSE) has emerged as a vital field, exploring how public servants leverage opportunities to create public value amidst unprecedented and unpredictable challenges in governance. This article navigates the expansive landscape of PSE literature, consolidating diverse theoretical perspectives and fragmented knowledge into a cohesive framework. Through an integrative and ...
    • Can automatic measuring replace humans when evaluating a shrimp fishery? 

      Herrmann, Bent; Øye, Elling Ruud; Dyrstad, Jonatan Sjølund; Alvestad, Anja Helene (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-05)
      Size measurements of fish and crustacean species play a critical role in fishery stock assessments, fishing gear size selectivity studies, and monitoring compliance with fisheries management regulations. One such example is from shrimp fisheries where samples of trawl-caught shrimps are frequently collected and size measured. However, the manual measurement of hundreds of small shrimps per sample ...
    • The microbiome of bioreactors containing mass-cultivated marine diatoms for industrial carbon capture and utilization 

      Aalto, Nerea Johanna; Giæver, Ingeborg Hulda; Eriksen, Gunilla Kristina; Israelsen, Linn; Krsmanovic, Stina; Petters, Sebastian; Bernstein, Hans Christopher (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-10)
      Marine microalgae are a promising innovation platform for carbon capture and utilization (CCU) biotechnologies to mitigate industrial greenhouse gas emissions. However, industrial-scale cultivation of algal mono-cultures is challenging and often unscalable. Non-axenic microalgae in large semi-open photobioreactors lead to the co-cultivation of diverse microbial communities. There is limited knowledge ...
    • Tourism mobilities and climate crisis dilemmas: Tourists traveling towards a climate apocalypse? 

      Viken, Arvid Ingmar; Heimtun, Bente (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-18)
      Framed by a multidimensional approach to dilemmas, this qualitative study focuses on Norwegians' views on tourism mobilities and climate change dilemmas, contextual aspects, coping strategies, and consequences. Despite being situated in ideological and moral landscapes where the climate crisis is largely ignored, all participants acknowledge the dilemmas. However, the unconcerned deny personal ...
    • Sea ice as habitat for microalgae, bacteria, virus, fungi, meio- and macrofauna: A review of an extreme environment 

      Lund-Hansen, Lars Chresten; Gradinger, Rolf Rudolf; Hassett, Brandon; Jayasinghe, Sahan; Kennedy, Fraser; Martin, Andrew; McMinn, Andrew; Søgaard, Dorte H.; Sorrell, Brian K. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-08-30)
      The novel concept of the review is a focus on the organisms living in the sea ice and what mechanisms they have developed for their existence. The review describes the physical environment of the sea ice and the microorganisms living there as microalgae, bacteria, virus, fungi, meio- and macrofauna where they inhabit the brine channels and exposed to low temperatures as down to −25 °C and high ...
    • Tanycytes from a bird’s eye view: gene expression profiling of the tanycytic region under different seasonal states in the Svalbard ptarmigan 

      Appenroth, Daniel; West, Alexander Christopher; Wood, Shona Hiedi; Hazlerigg, David Grey (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-20)
      In mammals and birds, tanycytes are known to regulate thyroid hormone conversion, and this process is central to the control of seasonal reproduction. In mammals, this cell type is also implicated in retinoic acid signalling, neurogenesis, and nutritional gatekeeping, all of which have been linked to hypothalamic regulation of energy metabolism. Less is known about these potential wider roles of ...
    • Humour and comics for academic change and well-being 

      Bertella, Giovanna; Tomassini, Lucia (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-28)
      Considering recent calls for change towards a more liveable tourism academia, we combined critical participatory action research with duoethnography to develop The Academic Line—a humorous comic project about academic life. We used traditional theories of humour to leverage the effectiveness of comics as communicative devices and explored how and to what extent our project promoted solidarity, ...
    • Clocks at a snail pace: biological rhythms in terrestrial gastropods 

      Salvador, Rodrigo Brincalepe; Mizumo Tomotani, Barbara (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-29)
      Biological rhythms are ubiquitous across the tree of life. Organisms must allocate their activities into moments of the day and of the season that will increase their probability of surviving and reproducing, which is done in the form of daily and annual rhythms. So far, the vast majority of studies on biological rhythms have focused on classical laboratory model species. Still, the use of ...
    • Reproductive performance of lumpfish (Cyclopterus lumpus, L. 1758) females: Effects of integrated photoperiod and temperature manipulations on sexual maturation and spawning 

      Mlingi, Frank Thomas; Burgerhout, Erik; Mommens, Maren; Tveiten, Helge; Tomkiewicz, Jonna; Kjørsvik, Elin; Puvanendran, Velmurugu (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-15)
      A successful control of sexual maturation is crucial for year-round production of lumpfish juveniles destined as cleaner fish in Atlantic salmon aquaculture. This study investigated the combined effects of photoperiod and temperature manipulations on sexual maturation and spawning in lumpfish females. Lumpfish juveniles were exposed to simulated natural and nine-month compressed annual photoperiods, ...
    • Rental expenses in private kindergartens: Impact of organizational structure on rental expenses in private kindergartens 

      Romanova, Olga (Master thesis; Mastergradsoppgave, 2024-06-03)
      Between 2019 and 2021, several major corporate groups within the kindergarten sector sold kindergarten properties to foreign private equity firms. As a result, affected kindergartens transitioned from property ownership to tenancy roles. This thesis aims to investigate the impact of organizational structure and ownership type on rental expenses within the private kindergarten sector in Norway. The ...
    • Hvordan kan Hertz tilpasse seg og opprettholde konkurransekraft i møtet med den fremvoksende konkurransen fra bildeling? 

      Adolfsen, Sivert Johan (Master thesis; Mastergradsoppgave, 2024-06-03)
      I denne studien har jeg undersøkt hvordan Hertz kan tilpasse seg og opprettholde konkurransekraft i møtet med en fremvoksende konkurranse fra bildelingstjenester. Problemformuleringen undersøkes på bakgrunn av den interessante påvirkningen disruptive konsepter kan ha på den tradisjonelle bilutleiebransjen, hvor nyere bildelingsaktører som Getaround og Hyre introduserer innovative forretningsmodeller ...