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  • Escape of hake (Merluccius merluccius), horse mackerel (Trachurus trachurus) and blue whiting (Micromesistius poutassou) in codends with shortened lastridge ropes 

    Cuende, Elsa; Sistiaga, Manu; Herrmann, Bent; Basterretxea, Mikel; Arregi, Luis (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-02)
    Diamond meshes in trawl codends have limited openness, which reduces escape opportunities for roundfish. Shortening the lastridge ropes (LR) attached to codend selvedges can increase the availability of open meshes resulting in higher chances of escape. However, this availability does not imply optimal mesh openness, nor does it guarantee use. We estimate the escape probability of hake, horse mackerel ...
  • Origin of marine invertebrate larvae on an Arctic inflow shelf 

    Descoteaux, Raphaelle; Huserbråten, Mats Brockstedt Olsen; Jørgensen, Lis Lindal; Renaud, Paul Eric; Ingvaldsen, Randi Brunvær; Ershova, Elizaveta; Bluhm, Bodil (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-20)
    Many benthic invertebrate taxa possess planktonic early life stages which drift with water currents and contribute to dispersal of the species, sometimes reaching areas beyond the current ranges of the adults. Until recently, it had been difficult to identify planktonic larvae to species level due to lack of distinguishing features, preventing detection of expatriate species. Here, we used DNA ...
  • Natural variation in snow depth and snow melt timing in the High Arctic have implications for soil and plant nutrient status and vegetation composition 

    Moriana Armendariz, Mikel; Nilsen, Lennart; Cooper, Elisabeth J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-16)
    Snow cover is a key component in Arctic ecosystems and will likely be affected by changes in winter precipitation. Increased snow depth and consequent later snowmelt leads to greater microbial mineralization in winter, improving soil and vegetation nutrient status. We studied areas with naturally differing snow depths and date of snowmelt in Adventdalen, Svalbard. Soil properties, plant leaf ...
  • International air travel attitude and travel planning lead times across 45 countries in response to the COVID-19 pandemic 

    Gallego, Inmaculada; González-Rodríguez, M. Rosario; Font aulet, Xavier (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-08)
    his paper explores global differences in travel risk perception based on i) attitudes towards travel abroad, and ii) the time required to plan travel. Baseline data from 2019 is compared with data from 2020, the first year of the COVID-19 pandemic. A methodology based on Big Data is developed through the Skyscanner metasearch engine, working with 20,756 million flight searches and 1979 million ...
  • Using DNA Metabarcoding to Characterize the Prey Spectrum of Two Co-Occurring Themisto Amphipods in the Rapidly Changing Atlantic-Arctic Gateway Fram Strait 

    Dischereit, Annkathrin; Wangensteen, Owen S.; Præbel, Kim; Auel, Holger; Havermans, Charlotte (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-04)
    The two congeneric hyperiids Themisto libellula and T. abyssorum provide an important trophic link between lower and higher trophic levels in the rapidly changing Arctic marine ecosystem. These amphipods are characterized by distinct hydrographic affinities and are hence anticipated to be impacted differently by environmental changes, with major consequences for the Arctic food web. In this ...
  • Self-reported medication information needs among medication users in a general population aged 40 years and above – the Tromsø study 

    Walquist, Mari Johannessen; Svendsen, Kristian; Garcia, Beate Hennie; Bergmo, Trine Strand; Eggen, Anne Elise; Halvorsen, Kjell H.; Småbrekke, Lars; Ringberg, Unni; Lehnbom, Elin; Waaseth, Marit (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-25)
    Purpose: To determine the prevalence and associated factors of self-reported medication information needs among medication users in a general population aged 40 years and above – The Tromsø Study.<p> <p>Methods: Cross-sectional study of medication users (n=10,231) among participants in the Tromsø Study, a descriptive analysis of questionnaire data and multivariable logistic regression (n=9,194). Results: ...
  • Challenges and opportunities when implementing strategic foresight: lessons learned when engaging stakeholders in climate-ecological research 

    Hamel, Sandra; Ims, Rolf Anker; Yoccoz, Nigel (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-13)
    Ecosystems are currently experiencing rapid changes. Decision-makers need to anticipate future changes or challenges that will emerge in order to implement both short-term actions and long-term strategies for reducing undesirable impacts. Strategic foresight has been proposed to help resolve these challenges for better planning and decision-making in an uncertain future. This structured process ...
  • Temporal dynamics in zooplankton δ13C and δ15N isoscapes for the North Atlantic Ocean: Decadal cycles, seasonality, and implications for predator ecology 

    Espinasse, Boris Dristan; Sturbois, Anthony; Basedow, Sünnje Linnéa; Hélaouët, Pierre; Johns, David G.; Newton, Jason; Trueman, Clive N. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-17)
    The limited amount of ecological data covering offshore parts of the ocean impedes our ability to understand and anticipate the impact of anthropogenic stressors on pelagic marine ecosystems. Isoscapes, i.e., spatial models of the distribution of stable isotope ratios, have been employed in the recent years to investigate spatio-temporal patterns in biogeochemical process and ecological responses. ...
  • Ectoparasites population dynamics are affected by host body size but not host density or water temperature in a 32-year long time series 

    Henriksen, Eirik Haugstvedt; Frainer, André; Poulin, Robert; Knudsen, Rune; Amundsen, Per-Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-22)
    Host density, host body size and ambient temperature have all been positively associated with increases in parasite infection. However, the relative importance of these factors in shaping long-term parasite population dynamics in wild host populations is unknown due to the absence of long-term studies. Here, we examine long-term drivers of gill lice (Copepoda) infections in Arctic charr (Salmonidae) ...
  • The Effect of Gut Microbiota and Probiotics on Metabolism in Fish and Shrimp 

    Ringø, Einar; Harikrishnan, Ramasamy; Soltani, Mehdi; Ghosh, Koushik (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-03)
    The present paper presents an overview of the effects of gut microbiota and probiotics on lipid-, carbohydrate-, protein- and amino acid metabolism in fish and shrimp. In probiotic fish studies, the zebrafish (Danio rerio) model is the most frequently used, and probiotic administration reveals the effect on glucose homeostasis, anti-lipidemic effects and increasing short-chain fatty acids, and ...
  • Flyt i et programvareutviklingsteam: Et casestudie med fokus på muligheter for tilrettelegging. 

    Lindgren, Frank Thure (Master thesis; Mastergradsoppgave, 2017-12-01)
    Målet for oppgaven har vært å undersøke om fenomenet «flyt» kan brukes som en ressurs i arbeidslivet gjennom å være et grunnlag for evidensbasert ledelse. Undersøkelsen er foretatt som et casestudie i et programvareutviklingsteam hvor forfatteren selv arbeider som gruppeleder. Problemstillingen ble definert til å være: «Hvordan opplever ansatte flyt og betydningen av flyt i arbeidssituasjonen og ...
  • Gjenoppbygginga og omfordelinga av inntekter etter den store sildekollapsen 

    Bertheussen, Bernt Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-27)
    Denne historiske analysen viser at den store sildekollapsen som fant sted på 1960-tallet, representerte et grunnleggende sjokk i norske fiskerier. Myndighetenes umiddelbare respons på krisa var å tillate fiske av småsild og enda mer subsidier for å berge fiskernes inntekter. Men dette var helt mislykka. Etter hvert førte rystelsene til at forvaltningspraksisen med fritt fiske ble terminert. Samtidig ...
  • Kapasitetsutvikling og konkurranseforhold – Utvalgte grupper i kystflåten 

    Dreyer, Bent Magne; Hermansen, Øystein; Hogrenning, Egil; Johnsen, Jahn Petter; Nyrud, Thomas; Siikavuopio, Bjørnar; Steinsbø, Silje (Research report; Forskningsrapport, 2022-11-11)
    Denne rapporten oppsummerer resultatene fra prosjektet Drivere for, samt effekten av, kapasitetsutvikling i fiskeflåten finansiert av Fiskeri- og havbruksnæringens forskningsfinansiering (FHF).<p> <p>Prosjektet er et samarbeid mellom Nofima og Norges Arktiske Universitet (UiT) og er gjennomført i perioden 2021 til 2022. Det innebærer blant annet at prosjektet er gjennomført i en periode med ...
  • Joining the dots: systematics and biogeography of Punctoidea land snails 

    Salvador, Rodrigo Brincalepe (Conference object; Konferansebidrag, 2022-11)
  • Economic performance, technical efficiency and fishers’ perceptions of factors affecting fishing activities. A study of a Vietnamese purse seine fleet 

    Cao, Thi Hong Nga (Doctoral thesis; Doktorgradsavhandling, 2022-12-19)
    <p>The focus of this thesis is on the economic performance and technical efficiency of a Vietnamese fishing fleet by the use of data envelopment analysis (DEA). The double bootstrap method has been used to overcome some of the limitations of DEA. In addition, the dissertation evaluates fishers’ perceptions of negative events affecting the fishing activities. <p>The first of three papers presents ...
  • Quantification of catch composition in fisheries: A methodology and its application to compare biodegradable and nylon gillnets 

    Cerbule, Kristine; Savina, Esther; Herrmann, Bent; Larsen, Roger B.; Feekings, Jordan Paul; Krag, Ludvig Ahm; Pellegrinelli, Alina (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-01)
    When evaluating fishing gear catches, the focus is often on a few species as opposed to the entire catch. In some fisheries this can lead to ignoring major part of catch composition. Thus, there is a need for a more holistic approach when evaluating the ecological impact of using a specific fishing gear and when comparing two or more gears. In this context, it is relevant to have a method that ...
  • Dynamical Controls of the Eastward Transport of Overwintering Calanus finmarchicus From the Lofoten Basin to the Continental Slope 

    Dong, Huizi; Zhou, Meng; Smith, Walker O.; Li, Baosheng; Hu, Ziyuan; Basedow, Sünnje Linnéa; Gaardsted, Frank; Zhang, Zhaoru; Zhong, Yisen (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-06)
    Diapausing populations of Calanus finmarchicus at depth in the Lofoten Basin (LB) return to the continental shelf and slope off the Lofoten-Vesterålen Islands during the phytoplankton spring bloom to feed and spawn, forming surface swarms with a great abundance. To study how overwintering populations of C. finmarchicus move with the deep currents and return to the shelf, Lagrangian transport ...
  • Multiomics in the central Arctic Ocean for benchmarking biodiversity change 

    Mock, Thomas; Boulton, William; Balmonte, John-Paul; Barry, Kevin; Bertilsson, Stefan; Bowman, Jeff; Buck, Moritz; Bratbak, Gunnar; Chamberlain, Emelia J.; Cunliffe, Michael; Creamean, Jessie; Ebenhöh, Oliver; Eggers, Sarah Lena; Fong, Allison A.; Gardner, Jessie; Gradinger, Rolf Rudolf; Granskog, Mats A.; Havermans, Charlotte; Hill, Thomas; Hoppe, Clara J.M.; Korte, Kerstin; Larsen, Aud; Müller, Oliver; Nicolaus, Anja; Oldenburg, Ellen; Popa, Ovidiu; Rogge, Swantje; Schäfer, Hendrik; Shoemaker, Katyanne; Snoeijs-Leijonmalm, Pauline; Torstensson, Anders; Valentin, Klaus; Vader, Anna; Barry, Kerrie; Chen, I-M A; Clum, Alicia; Copeland, Alex; Daum, Chris; Eloe-Fadrosh, Emiley; Foster, Brian; Foster, Bryce; Grigoriev, Igor V.; Huntemann, Marcel; Ivanova, Natalia; Kuo, Alan; Kyrpides, Nikos C.; Mukherjee, Supratim; Palaniappan, Krishnaveni; Reddy, T.B.K.; Salamov, Asaf; Roux, Simon; Varghese, Neha; Woyke, Tanja; Wu, Dongying; Leggett, Richard M.; Moulton, Vincent; Metfies, Katja (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-17)
    Multiomics approaches need to be applied in the central Arctic Ocean to benchmark biodiversity change and to identify novel species and their genes. As part of MOSAiC, EcoOmics will therefore be essential for conservation and sustainable bioprospecting in one of the least explored ecosystems on Earth.
  • Small hydropower, large obstacle? Exploring land use conflict, Indigenous opposition and acceptance in the Norwegian Arctic 

    Engen, Sigrid; Hausner, Vera Helene; Fauchald, Per; Ruud, Audun; Broderstad, Else Grete (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-23)
    In this study, we explore Indigenous energy opposition to and acceptance of small hydropower development. In Sapmi ´ (i.e., the traditional homeland of the Indigenous S´ ami people), land development poses a major threat to the cultural and material needs of the S´ ami people through the loss of pastures essential to Sami ´ reindeer herding. In contrast to large-scale renewable energy projects ...
  • Midnight Sun to Polar Night: A Model of Seasonal Light in the Barents Sea 

    Connan-McGinty, Stacey; Banas, Neil S.; Berge, Jørgen; Cottier, Finlo Robert; Grant, Stephen; Johnsen, Geir; Kopec, Tomasz Piotr; Porter, Marie; Mckee, David (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-20)
    Arctic marine ecosystems are strongly influenced by the extreme seasonality of light in the region. Accurate determination of light is essential for building a comprehensive understanding of the dynamics of animal and aquatic algae populations. Current approaches to underwater light field parameterisations rely upon shortwave radiation (300–3000 nm) estimates from satellites or surface radiometry ...

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