Now showing items 401-420 of 931

    • Arctic Marine Data Collection Using Oceanic Gliders: Providing Ecological Context to Cetacean Vocalizations 

      Aniceto, Ana Sofia; Pedersen, Geir; Primicerio, Raul; Biuw, Martin; Lindstrøm, Ulf (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-16)
      To achieve effective management and understanding of risks associated with increasing anthropogenic pressures in the ocean, it is essential to successfully and efficiently collect data with high spatio–temporal resolution and coverage. Autonomous Underwater Vehicles (AUVs) are an example of technological advances with potential to provide improved information on ocean processes. We demonstrate the ...
    • The melting snowball effect: A heuristic for sustainable Arctic governance under climate change 

      Dankel, Dorothy Jane; Tiller, Rachel; Koelma, Elske; Lam, Vicky W.Y.; Liu, Yajie (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-08)
      Climate change in the Arctic is occurring at a rapid rate. In Longyearbyen, Svalbard, the world’s northernmost city, deadly avalanches and permafrost thaw-induced architectural destruction has disrupted local governance norms and responsibilities. In the North Atlantic, the warming ocean temperatures have contributed to a rapid expansion of the mackerel stock which has spurred both geo-political ...
    • Obesity-induced alterations in the gut microbiome in female mice fed a high-fat diet are antagonized by dietary supplementation with a novel, wax ester–rich, marine oil 

      Schots, Pauke C.; Jansen, Kirsten Maria; Mrazek, Jakub; Pedersen, Alice Marie; Olsen, Ragnar Ludvig; Larsen, Terje Steinar (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-09)
      Dietary supplementation with calanus oil, a novel wax ester–rich marine oil, has been shown to reduce adiposity in high-fat diet (HFD)–induced obese mice. Current evidence suggests that obesity and its comorbidities are intrinsically linked with unfavorable changes in the intestinal microbiome. Thus, in line with its antiobesity effect, we hypothesized that dietary supplementation with calanus oil ...
    • Biota miljøprøvetaking i 2018 i vannforekomsten Finnfjord Indre 

      Aalto, Nerea Johanna (Research report; Forskningsrapport, 2019)
      I henhold til brev fra Miljødirektoratet datert 10.10.2017; Vedtak om fastsettelse av intervall for vannovervåking, (av Finnfjord Indre) ble det tatt nye prøver i 2018. Hovedfokuset var på biota (blåskjell), men det ble også tatt sedimentprøver. Det ble benyttet en ROVundervannsdrone for å finne blåskjell, men det ble ikke funnet noen på bunnen ved de planlagte prøvetakingsstasjonene eller nær ...
    • Intracellular distribution and transcriptional regulation of Atlantic salmon (Salmo salar) Rab5c, 7a and 27a homologs by immune stimuli 

      Nepal, Arpita; Wolfson, Deanna; Ahluwalia, Balpreet Singh; Jensen, Ingvill; Jørgensen, Jorunn B; Iliev, Dimitar Borisov (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-31)
      Rab GTPases control trafficking of intracellular vesicles and are key regulators of endocytic and secretory pathways. Due to their specific distribution, they may serve as markers for different endolysosomal compartments. Since Rab GTPases are involved in uptake and trafficking of endocytosed ligands and cell receptors, as well as secretion of immune mediators, they have been implicated in diverse ...
    • The impact of nature documentaries on public environmental preferences and willingness to pay: Entropy balancing and the Blue Planet II effect 

      Hynes, Stephen; Yeboah, Isaac-Ankamah; O'Neill, Stephen; Needham, Katherine; Bui, Bich Xuan; Armstrong, Claire (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-23)
      In this study, the discrete choice experiment approach was employed in a survey of the Scottish general public to analyze how respondents make tradeoffs between blue growth potential and marine ecosystem service delivery associated with the Mingulay cold water reef complex. Results indicate a higher willingness to pay for management options associated with the highest possible levels of marine litter ...
    • Potential for Sustainable Aquaculture: Insights from Discrete Choice Experiments 

      Bui, Bich Xuân; Sandoft, Erlend (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-04)
      The growth in global aquaculture production may address the lack of sustainability in wild fisheries, alleviate poverty in rural and coastal areas, and help meet the worldwide increase in demand for animal protein. However, there is an ongoing debate about the severity of the environmental impact of aquaculture production. Investing in new high-tech production systems can address both productivity ...
    • Consumer preference for eco-labelled aquaculture products in Vietnam 

      Bui, Bich Xuân (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-01)
      Product labelling with eco-certifications is market-based incentive tool for sustainable aquaculture, thus mitigating negative environmental impacts. The aims of this study are to investigate: i) whether consumers prefer eco-labelled (eco-certified) shrimps over conventional (non-certified) shrimp; and ii) whether consumers prefer specific eco-label (eco-certification logo) over others. The study ...
    • Public Perceptions of Deep-Sea Environment: Evidence from Scotland and Norway 

      Ankamah-Yeboah, Isaac; Xuan, Bui Bich; Hynes, Stephen; Armstrong, Claire W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-10)
      Knowledge of people's understanding of environmental problems is vital for the effective implementation of the ecosystem approach to marine management. This is especially relevant when conservation goals are aimed at ecosystems in the deep-sea that are remote to the consciousness of most people. This study explores public perceptions of the deep-sea environment among the Scottish and Norwegian public. ...
    • Trading off Tourism and Fisheries 

      Bui, Bich Xuân; Armstrong, Claire W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-22)
      This paper presents a deterministic bioeconomic model in which the creation of a marine protected area (MPA) is not only a fisheries management tool but also introduced in order to provide tourism amenity benefits. The theoretical model is illustrated with analysis of the Nha Trang Bay (NTB) MPA in Khanh Hoa province in Vietnam, where the anchovy purse seine fishery is considered. An amenity value ...
    • Stability of lipids during wet storage of the marine diatom Porosira glacialis under semi-preserved conditions at 4 and 20 °C 

      Dalheim, Lars; Svenning, Jon Brage; Vasskog, Terje; Eilertsen, Hans Christian; Olsen, Ragnar Ludvig (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-17)
      Cultivation of diatoms may help alleviate the pressure on wild fish stocks for marine nutrient availability in aquaculture feed and for human consumption. However, the lipids in microalgae biomass are easily deteriorated, both trough lipolysis and degradation of polyunsaturated fatty acids (PUFA). Proper storage conditions are therefore necessary to maintain the lipid quality. Additionally, the ...
    • The effect of long-term use on the Catch efficiency of Biodegradable gillnets 

      Grimaldo, Eduardo; Herrmann, Bent; Jacques, Nadine; Kubowicz, Stephan; Cerbule, Kristine; Su, Biao; Larsen, Roger B.; Vollstad, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-05)
      The effect of long-term use on the catch efficiency of biodegradable gillnets was investigated during commercial fishing trials and in controlled lab aging tests. The relative catch efficiency between biodegradable and nylon gillnets was evaluated over three consecutive fishing seasons for Atlantic cod (Gadus morhua) in Norway. The biodegradable gillnets progressively lost catch efficiency over time, ...
    • Første samlerapport: Velferd for triploid laks i Nord-Norge Fra utsett til slakt, utsett 2014-2017 

      Stien, Lars Helge; Sæther, Per Anton; Kristiansen, Tore S; Fjelldal, Per Gunnar; Sambraus, Florian (Research report; Forskningsrapport, 2019-12-06)
      Denne rapporten tar for seg velferden til 24 grupper av triploid laks satt ut i Nord-Norge 2014-2017. Noen av de tidlige smoltproduksjonene var kjennetegnet av lav eggkvalitet, sykdom eler andre problemer i settefiskfasen, men dette forbedret seg utover i prosjektperioden. For sjøfasen viser dataene at den triploide laksen i mange av tilfellene utviklet sår i vintersesongen med påfølgende høy ...
    • DNA metabarcoding unveils niche overlapping and competition among Caribbean sea urchins 

      Rodríguez-Barreras, Ruber; Godoy-Vitorino, Filipa; Præbel, Kim; Wangensteen, Owen S. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-10)
      Detailed information of trophic interactions among consumer–resources in food webs is usually limited due to the lack of accurate identification of eaten food resources. The use of DNA-metabarcoding has been proven useful for molecular identification of the numerous taxa present in stomach contents. Here, we characterize the diet and trophic behavior of four sea urchin species inhabiting shallow ...
    • Research needs of importance for food safety and environmental protection as based on data gaps identified by VKM 

      Alexander, Jan; Andersen, Lene Frost; Asare, Nana Yaa Ohene; Basic, Dean; Elvevoll, Edel Oddny; Grahek-Ogden, Danica; Hemre, Gro Ingunn; Hjeltnes, Brit Kristine; Hofshagen, Merete; Krogdahl, Åshild; Källqvist, Torsten; Rafoss, Trond; Skaar, Ida; Skåre, Janneche Utne; Sorteberg, Hilde-Gunn Opsahl; Steffensen, Inger-Lise; Vandvik, Vigdis; Wasteson, Yngvild; Wendell, Micael (Research report; Forskningsrapport, 2018-05-23)
      The goal of this report is to highlight research needs and data gaps that are of future importance for food safety and protection of the environment and thereby improve the national knowledge-base. This report is the latest in a series of reports on research needs and data gaps published periodically by the Norwegian Scientific Committee for Food and Environment (VKM), former Norwegian Scientific ...
    • Research needs of importance for food safety and environmental protection as based on data gaps identified by VKM. Summary report from VKM’s scientific opinions from 2016 to 2017 

      Alexander, Jan; Andersen, Lene Frost; Asare, Nana Yaa Ohene; Basic, Dean; Elvevoll, Edel Oddny; Grahek-Ogden, Danica; Hemre, Gro Ingunn; Hjeltnes, Brit Kristine; Hofshagen, Merete; Krogdahl, Åshild; Källqvist, Torsten; Rafoss, Trond; Skaar, Ida; Skåre, Janneche Utne; Sorteberg, Hilde-Gunn Opsahl; Steffensen, Inger-Lise; Vandvik, Vigdis; Wasteson, Yngvild; Wendell, Micael (Research report; Forskningsrapport, 2018-05-23)
      Summary report from VKM’s scientific opinions for 2016 - 2017<br>The goal of this report is to highlight research needs and data gaps that are of future importance for food safety and protection of the environment and thereby improve the national knowledge base. This report is the latest in a series of reports on research needs and data gaps published periodically by the Norwegian Scientific Committee ...
    • Estimation of acoustic indices with CVs for Northeast Arctic saithe in the Norwegian coastal survey 2003-2017 applying the Sea2Data StoX software 

      Mehl, Sigbjørn; Johnsen, Espen; Skålevik, Åsmund; Aglen, Asgeir (Research report; Forskningsrapport, 2018)
      The Sea2Data software StoX was applied to estimate acoustic indices with CVs and length and weight at age for Northeast Arctic saithe from the Norwegian coastal survey Varanger - Stad in 2013 to 2017. The indices are compared to indices previously estimated by the BEAM software, and differences are mainly explained by different strata areas.
    • Catch pattern and size selectivity for a gear designed to prevent fish injuries during the capture process in a North-East Atlantic demersal trawl fishery 

      Herrmann, Bent; Sistiaga, Manu; Larsen, Roger B.; Brinkhof, Jesse; Gjøsund, Svein Helge; Jacques, Nadine; Santos, Juan (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-04)
      In the North-East Atlantic demersal trawl fishery targeting cod and haddock, the interest on fishing gear designs that preserve fish quality and welfare has grown. However, the gear configurations tested so far imply practical challenges, therefore, more user-friendly designs are still sought by the industry. For a new design to be considered, it needs to have size selective properties that are at ...
    • A brain and a head for a different habitat: Size variation in four morphs of Arctic charr (Salvelinus alpinus (L.)) in a deep oligotrophic lake 

      Tamayo, Ana-Maria Peris; Devineau, Olivier; Præbel, Kim; Kahilainen, Kimmo Kalevi; Østbye, Kjartan (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-25)
      Adaptive radiation is the diversification of species to different ecological niches and has repeatedly occurred in different salmonid fish of postglacial lakes. In Lake Tinnsjøen, one of the largest and deepest lakes in Norway, the salmonid fish, Arctic charr (<i>Salvelinus alpinus</i> (L.)), has likely radiated within 9,700 years after deglaciation into ecologically and genetically segregated ...
    • Assessing the reproductive biology of the Greenland shark (Somniosus microcephalus) 

      Nielsen, Julius; Hedeholm, Rasmus B.; Lynghammar, Arve; McClusky, Leon Mendel; Berland, Bjørn; Steffensen, John Fleng; Christiansen, Jørgen Schou (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-07)
      The Greenland shark (<i>Somniosus microcephalus</i>, Squaliformes: Somniosidae) is a long-lived Arctic top predator, which in combination with the high historical and modern fishing pressures, has made it subject to increased scientific focus in recent years. Key aspects of reproduction are not well known as exemplified by sparse and contradictory information e.g. on birth size and number of pups ...