Viser treff 421-440 av 5357

    • The influence of prey distribution on marine top predator movements 

      Vogel, Emma (Doctoral thesis; Doktorgradsavhandling, 2023-12-08)
      Predation is an ecological process that relies on spatial and temporal co-occurrence of predators and their prey. In marine ecosystems, killer and humpback whales are considered sentinels of ecosystem health, given their critical roles as top predators in shaping marine food webs and their responsiveness to ecosystem changes. As they are seldom influenced by natural threats, they are model species ...
    • Foundations of GAM Research. Methodological Guidelines for Designing and Conducting Research that Combines Games and Agent-based Models 

      Szczepanska, Timo (Doctoral thesis; Doktorgradsavhandling, 2023-12-04)
      <p>This thesis presents the development of the games and agent-based model methodology and provides methodological guidelines for using GAM research, i.e., combining games and agent-based models in research. <p>GAM research is rooted in complexity sciences and transdisciplinary research, offering valuable insights into complex, adaptable systems. GAM research has particular relevance in decision-making ...
    • Holistic monitoring of freshwater and terrestrial vertebrates by camera trapping and environmental DNA 

      Holm, Anne Marie Rubæk; Knudsen, Steen Wilhelm; Månsson, Malene; Pedersen, Ditte Elmgreen; Nordfoss, Pauli Holm; Johansson, Daniel Klingberg; Gramsbergen, Marthe; Havmøller, Rasmus Worsøe; Sigsgaard, Eva Egelyng; Thomsen, Philip Francis; Olsen, Morten Tange; Møller, Peter Daniel Rask (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-20)
      The anthropogenic impact on the world's ecosystems is severe and the need for non-invasive, cost-effective tools for monitoring and understanding those impacts are therefore urgent. Here, we combine two such methods in a comprehensive multi-year study; camera trapping (CT) and analysis of environmental DNA (eDNA), in river marginal zones of a temperate, wetland Nature Park in Denmark. CT was ...
    • Praksisbasert utdanning - virkemiddel for å styrke entreprenørskap i rurale områder 

      Hagebakken, Grete; Reimers, Christian Schlaikjær; Solstad, Elsa Anita (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-05)
      Entreprenørskap er viktig for utviklingen i rurale regioner fordi det er et stort behov for å skape nye arbeidsplasser. Vår problemstilling er: Hvordan bidrar et akseleratorprogram til å møte behovene til oppstartsbedrifter i rurale regioner? I studien ønsker vi å frembringe et bilde av hvordan bedriftsdeltakere, eiere, prosjektledere og styringsgruppe opplever programmet. Vi konsentrerer oss om ...
    • Horizon scanning of potential threats to high-Arctic biodiversity, human health and the economy from marine invasive alien species: A Svalbard case study 

      Cottier-Cook, Elizabeth Joanne; Bentley-Abbot, Jude; Cottier, Finlo Robert; Minchin, Dan; Olenin, Sergej; Renaud, Paul Eric (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-09)
      The high Arctic is considered a pristine environment compared with many other regions in the northern hemisphere. It is becoming increasingly vulnerable to invasion by invasive alien species (IAS), however, as climate change leads to rapid loss of sea ice, changes in ocean temperature and salinity, and enhanced human activities. These changes are likely to increase the incidence of arrival and ...
    • New insights into the Barents Sea Calanus glacialis population dynamics and distribution 

      Aarflot, Johanna Myrseth; Eriksen, Elena; Prokopchuk, Irina P.; Svensen, Camilla; Søreide, Janne; Wold, Anette; Skogen, Morten D. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-18)
      Arctic copepods are major grazers and vital food for planktivores in polar ecosystems but challenging to observe due to remoteness and seasonal sea ice coverage. Models offer higher spatio-temporal resolution, and individual-based models (IBMs) are useful since they incorporate individual variability which characterizes most copepod populations. Here, we present an IBM of the Arctic copepod Calanus ...
    • Skogens helsetilstand i Norge. Resultater fra skogskadeovervåkingen i 2022 

      Timmermann, Volkmar; Børja, Isabella; Clarke, Nicholas; Gohli, Jostein; Hietala, Ari Mikko; Jepsen, Jane Uhd; Krokene, Paal; Lislegård, Harald Haga; Nagy, Nina Elisabeth; Nyeggen, Hans; Solberg, Sverre; Solheim, Halvor; Solvin, Thomas Mørtvedt; Svensson, Arvid; Tollefsrud, Mari Mette; Vindstad, Ole Petter Laksforsmo; Økland, Bjørn; Aas, Wenche (Research report; Forskningsrapport, 2023-11-17)
      Skogens helsetilstand påvirkes i stor grad av klima og værforhold, enten direkte ved tørke, frost og vind, eller indirekte ved at klimaet påvirker omfanget av soppsykdommer og insektangrep. Klimaendringene og den forventede økningen i klimarelaterte skogskader gir store utfordringer for forvaltningen av framtidas skogressurser. Det samme gjør invaderende skadegjørere, både allerede etablerte arter ...
    • Kunnskapsbaserte tjenester i kommunale sykehjem - idealer og realiteter 

      Nordahl-Pedersen, Hilde; Dreyer Fredriksen, Sven Tore; Kassah, Bente Lilljan Lind; Tingvoll, Wivi-Ann (Journal article; Tidsskriftartikkel; Peer reviewed, 2023)
      Nasjonale myndigheter legger vekt på at tjenestene som utøves i helse- og omsorgstjenesten skal være kunnskapsbaserte.
    • The impact of environmental taxes on transportation and storage enterprises´ development - the case of balkan countries 

      Sadowski, Adam; Misztal, Anna; Kowalska, Magdalena; Jędrzejczak, Ryszard; Engelseth, Per; Bujak, Andrzej; Skowron-Grabowska, Beata (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-19)
      Sustainable development counteracts climate change and strives for a good quality of life. It is a development based on economic, social and environmental goals which should be evaluated. Environmental taxes have to ensure enterprises’ development follows sustainability principles. The basis of environmental taxes is a physical unit of harmful substance emissions with a proven negative impact on the ...
    • A segmentation of fish consumers based on quantity and type of fish: Insights from the Swedish market 

      Armbrecht, John; Lundberg, Erik; Skallerud, Kåre (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-06)
      The primary objective of this study is to elucidate the underlying factors contributing to the observed differences in fish consumption patterns. To accomplish this, a segmentation analysis was conducted on a representative sample of 2207 individuals from Sweden based on the dual dimensions of both the volume and variety of fish ingested. By scrutinizing these facets, the aim is to gain deeper ...
    • Fra gründervirksomhet til lønnsom bedrift - økonomistyring i praksis 

      Stave, Grethe (Master thesis; Mastergradsoppgave, 2023-08-25)
      Hensikten med denne studien er å undersøke hvordan vellykkede gründere faktisk styrer virksomhetene sine. Søkelyset er satt på økonomistyringspraksisen. Studien er gjennomført blant gründere som ikke hadde økonomisk utdanning eller praksis da de startet virksomhetene. Denne målgruppen er interessant fordi den er representativ for svært mange gründere. Samtidig er det gjort lite forskning på dette ...
    • The Impact on Logistics when using Hydroponics Technology in a Value Network 

      Engelseth, Per (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07)
      Logistics of using hydroponics to support urban agriculture in a value network context is conceptualised through an empirically grounded model. This is developed employing a single case study that reveals hydroponics use in a value network, a local and transparent form of inter-organizational cooperation. Hydroponics use for urban farming in its networked context reveals this form of food supply ...
    • Gillnet colour affects catch efficiency in pearlspot (Etroplus suratensis) tropical estuary fishery 

      Cerbule, Kristine; Madhu, V.R.; Mohanan, Salini; Herrmann, Bent (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-19)
      Gillnets are one of the most commonly used fishing gears in both marine and inland waters. Different colour filament nettings are often used in gillnets. However, the effect of gillnet colour on catch efficiency is unclear for most fisheries. Therefore, in this study we investigated the effect of gillnet colour on the catch efficiency in pearlspot (Etroplus suratensis) fishery in Vembanad lake, ...
    • A bioeconomic perspective on the Barents Sea snow crab (Chionoecetes opilio, Majidae) fishery 

      Hogrenning, Egil (Doctoral thesis; Doktorgradsavhandling, 2023-11-30)
      The focus of this thesis is the Barents Sea snow crab (<i>Chionoecetes opilio</i>, Majidae) fishery. The crab was first observed in the area in 1996, and a fishery for the crab commenced in 2012. Both the crab population and the fishery are still expanding. The main objective of this thesis is to develop research that contributes to an improved utilization of the crab. For this purpose, a spatial ...
    • Calanus oil and its constituents as a therapeutic approach to target obesity-induced metabolic distortions 

      Schots, Pauke C. (Doctoral thesis; Doktorgradsavhandling, 2023-11-24)
      Obesity is one of the leading causes for the development of metabolic disorders, such as insulin resistance and type 2 diabetes. Omega-3 fatty acids, found in seafood and marine oils, are shown to reduce obesity, lower blood lipid levels, change the composition of the gut microbiota and reduce the risk for cardiovascular diseases. The increased demand for seafood and marine oils has put pressure on ...
    • Advice on fishing opportunities for Barents Sea capelin in 2024 — ICES subareas 1 and 2 excluding Division 2.a west of 5°W 

      Howell, Daniel; Nielsen, Anders; Stock, Brian; Ono, Kotaro; Clain, Laura; Fossheim, Maria; Wenneck, Thomas de Lange; Harbitz, Alf; Rodriguez, Alfonso Pérez; Iriondo, Ane; Staby, Arved; Bogstad, Bjarte; Husson, Berengere; Marshall, C. Tara; Tranang, Caroline Aas; Johannesen, Edda; Vozgirdas, Eduardas; Eriksen, Elena; Eidset, Elise; Hallfredsson, Elvar H.; Berg, Erik; Skaret, Georg; Höffle, Hannes; Jacobsen, Jan Arge; Stiansen, Jan Erik; Godiksen, Jane Aanestad; Janusz, Jerzy; Fall, Johanna Jennifer Elisabeth; Trochta, John Tyler; Gondra, Jon Ruiz (Research report; Forskningsrapport, 2023-10-16)
    • Modulation of intestinal growth and differentiation by photoperiod and dietary treatment during smoltification in Atlantic salmon (Salmo salar, L.) 

      Duarte, Vilma; Gaetano, Pasqualina; Striberny, Anja; Hazlerigg, David; Jørgensen, Even Hjalmar; Fuentes, Juan; Campinho, Marco A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-15)
      Atlantic salmon undergo smoltification, a process that prepares the fish to enter and thrive in seawater (SW). Several physiological changes occur during smolting, especially in osmoregulatory tissues, the gill, the kidney, and the intestine. Here we characterized the effects on intestinal morphogenesis of two different, commonly used smoltification regimes during the end of the freshwater phase, ...
    • Big business returns on B Corp? Growing with green & lean as any label is a good label 

      Sigurdsson, Valdimar; Larsen, Nils Magne; Folwarczny, Michał; Sigurdardottir, Freya Thoroddsen; Menon, Vishnu R.G.; Fagerstrøm, Asle (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-25)
      This current research contributes to the concept of consumer-based food label equity (CBFLE) by testing the predictive validity of a scale developed by Coderre et al. (2022) in the sustainability and health domains of seafood products. In Study 1 (N = 301; between-within subjects), we found that scores on all subscales, except the (Dis)honesty subscale, were significantly related to willingness to ...
    • Utilizing consumer-based label equity to signal consumer products free from endocrine-disrupting chemicals 

      Sigurdsson, Valdimar; Folwarczny, Michał; Larsen, Nils Magne; Menon, Vishnu R.G.; Sigurdardottir, Freyja Thoroddsen; Perkovic, Sonja (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-26)
      Endocrine-disrupting chemicals (EDCs) in consumer products present a global health concern. Yet, the understanding of consumer perceptions of EDC-related product labels is limited. This study investigated consumer reactions to such labels using data from 602 Scandinavian consumers. The results indicate a positive association between label performance (willingness to buy, pay in a local currency, pay ...
    • Alternative Rope Materials in Towed Fishing Gear to Reduce Plastic Waste, A Comparative Study of Mechanical Properties and Tolerance Against Wear and Tear 

      Føre, Heidi Moe; Hatlebrekke, Hanne Hjelle; Grimaldo, Eduardo (Chapter; Bokkapittel, 2023-06)
      This paper presents a comparative study assessing the wear tolerance of rope materials in demersal fisheries, specifically seine ropes and dolly ropes. Fourteen different rope materials were assessed in this study, including conventional and alternative commercially available synthetic polymers, and biodegradable materials including natural fibre ropes and custom-made polyester monofilaments. The ...