Now showing items 101-120 of 5427

    • Exploring Growth Patterns of Maurolicus muelleri across Three Northeast Atlantic Regions 

      Alvarez, Paula; Aldanondo, Naroa; Wieczorek, Alina M.; Cariou, Thibault; Boyra, Guillermo; Grimaldo, Eduardo; Melle, Webjørn Raunsgård; Klevjer, Thor A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-26)
      Maurolicus muelleri is an important component of mesopelagic ecosystems; nevertheless, we possess only limited knowledge about its biological features. We collected samples of M. muelleri from six scientific surveys between 2019 and 2021 in three geographical areas in the Northeast Atlantic waters (from South to North): the Bay of Biscay, the Celtic Sea, and the Norwegian Sea. Geographical ...
    • Sport Plus the Shooting: An Examination of International Sporting Success and Event Hostship's Impact on the National Willingness to Fight 

      Storm, Rasmus K.; Jakobsen, Tor Georg; Jakobsen, Jo (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-08)
      Research has long aimed to identify the effects of international sporting success or event hostship on nations. Overall findings suggest that tangible benefits are marginal at best. Still, some studies find that sport may have significant intangible effects, such as bolstering (short-term) feelings of national pride or happiness. Following this strand of research, the present paper asks whether ...
    • Relevance of the bacteriophage adherence to mucus model for Pseudomonas aeruginosa phages 

      de Freitas Almeida, Gabriel Magno; Ravantti, Janne; Grdzelishvili, Nino; Kakabadze, Elene; Bakuradze, Nata; Javakhishvili, Elene; Megremis, Spyridon; Chanishvili, Nina; Papadopoulos, Nikolaos; Sundberg, Lotta-Riina (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-24)
      Pseudomonas aeruginosa infections are getting increasingly serious as antimicrobial resistance spreads. Phage therapy may be a solution to the problem, especially if improved by current advances on phage-host studies. As a mucosal pathogen, we hypothesize that P. aeruginosa and its phages are linked to the bacteriophage adherence to mucus (BAM) model. This means that phage-host interactions ...
    • Warming changes the life history composition of marine fish communities at high latitudes 

      Bernardo, Cristiane Palaretti; Pecuchet, Laurene Anne Marie; Santos, Antonio Jorge Fonseca Antunes; Dolgov, Andrey V.; Fossheim, Maria; Husson, Berengere; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-03-20)
      Across marine ecosystems, species are redistributing as a response to increased sea temperatures. In the Arctic, rapid warming causes poleward shifts of boreal species. Which species are redistributing and the drivers of their movements can be related to their life history traits. Here, we aimed to characterize and analyze the spatio-temporal changes in the life history strategy (LHS) composition ...
    • Ecological interactions between farmed Atlantic salmon and wild Atlantic cod populations in Norway: A review of risk sources and knowledge gaps 

      Bøhn, Thomas; Strøm, John Frederik; Sanchez-Jerez, Pablo; Keeley, Nigel B.; Johansen, Torild; Gjelland, Karl Øystein; Sandlund, Nina; Sæther, Bjørn Steinar; Sætra, Ingeborg Mathisen; Olsen, Esben Moland; Skjæraasen, Jon Egil; Meier, Sonnich; van der Meeren, Terje; Bjørn, Pål Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-02-27)
      Aquaculture provides an important and expanding source of protein rich and healthy food to the world. However, to minimize environmental harm from aquaculture, interactions with wild fish communities need to be thoroughly assessed. Here, we characterize the existing knowledge pertaining to such interactions, exemplified with Atlantic salmon (Salmo salar) farming in open net pens along the Norwegian ...
    • Selectivity in snow crab (Chionoecetes opilio) pot fishery: Effect of escape gap shape and size for conservation of fishery resources 

      Cerbule, Kristine; Herrmann, Bent; Brčić, Jure; Grimaldo, Eduardo; Bak-Jensen, Zita (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-04)
      Conical pots are commonly used fishing gear for capturing snow crab (Chionoecetes opilio). In these fisheries, optimal snow crab size selection is important for reducing unintended mortality of undersized individuals aiming at conserving fisheries resources and reducing sorting time onboard fishing vessels. Size selection in snow crab pot fisheries commonly takes place through pot netting meshes ...
    • Towards eDNA informed biodiversity studies – Comparing water derived molecular taxa with traditional survey methods 

      Westgaard, Jon-Ivar; Præbel, Kim; Arneberg, Per; Ulaski, Brian P.; Ingvaldsen, Randi Brunvær; Wangensteen, Owen S.; Johansen, Torild (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-02-27)
      Managing natural resources in a sustainable manner requires understanding the complexity of ecosystems and the species that are associated with the different parts of the ecosystem. Much of this knowledge is derived from traditional sampling methods (e.g., different types of trawls). The analysis of environmental DNA (eDNA) can provide increased knowledge, complementary to the traditional methods. ...
    • Persistent immune responses in the heart determine the outcome of cardiomyopathy syndrome in Atlantic salmon (Salmo salar) 

      Sun, Baojian; Vindas, Marco; Kavaliauskiene, Simona; Bjørgen, Håvard; Koppang, Erling Olaf; Wisløff, Helene; Frisk, Michael; Lund, Hege; Johansen, Ida Beitnes (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-02-06)
      Cardiomyopathy syndrome (CMS) caused by piscine myocarditis virus (PMCV) is a severe cardiac disease in Atlantic salmon (Salmo salar) and one of the leading causes of morbidity and mortality in the Norwegian aquaculture industry. Previous research suggest a variation in individual susceptibility to develop severe disease, however the role of the immune response in determining individual outcome ...
    • Circadian coupling of mitochondria in a deep-diving mammal 

      Ciccone, Chiara; Kante, Fayiri; Folkow, Lars; Hazlerigg, David Grey; West, Alexander Christopher; Wood, Shona Hiedi (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-08)
      Regulation of mitochondrial oxidative phosphorylation is essential to match energy supply to changing cellular energy demands, and to cope with periods of hypoxia. Recent work implicates the circadian molecular clock in control of mitochondrial function and hypoxia sensing. Because diving mammals experience intermittent episodes of severe hypoxia, with diel patterning in dive depth and duration, ...
    • Comparative analysis of Rights of Nature (RoN) case studies worldwide: Features of emergence and design 

      Kahui, Viktoria; Armstrong, Claire W.; Aanesen, Margrethe (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-06)
      We provide a descriptive comparative analysis of features related to emergence and design among 14 Rights of Nature (RoN) case studies worldwide. For analysis, we develop a schematic roadmap in which we categorise RoN into case studies with public guardianship and ones with appointed guardians (termed Environmental Legal Personhoods (ELPs) with further sub-categories of indirect, direct and living ...
    • Determinants of readiness for strategic value co-creation in hospitality and tourism organisations 

      Cloarec, David; Ribeiro, Manuel Alector; Font aulet, Xavier (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-08)
      This paper examines how servant leadership influences an organisation’s readiness for strategic value co-creation through service climate, innovation climate, locus of control and self-efficacy. A model that draws on servant leadership and social cognitive theories is tested by surveying 222 hospitality and tourism business managers operating in France and the UK, and the data is analysed with ...
    • Does long-term grazing cause cascading impacts on the soil microbiome in mountain birch forests? 

      Ahonen, Saija H.K.; Ruotsalainen, Anna Liisa; Wäli, Piippa R.; Suominen, Otso; Vindstad, Ole Petter Laksforsmo; Jepsen, Jane Uhd; Markkola, Annamari (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-02-01)
      In subarctic mountain birch forests, reindeer grazing and moth outbreaks act as important biotic drivers of ecosystem functioning. We investigated how a long-term contrast in reindeer grazing regimes and short-term ungulate exclusion affected soil fungal and bacterial communities in mountain birch forests recovering from a recent moth outbreak. We separately described the impacts on microbial ...
    • There and back again? A B cell's tale on responses and spatial distribution in teleosts 

      Jenberie, Shiferaw; van der Wal, Yorick Andreas; Jensen, Ingvill; Jørgensen, Jorunn B (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-03-11)
      Teleost B cells are of special interest due to their evolutionary position and involvement in vaccine-induced adaptive immune responses. While recent progress has revealed uneven distribution of B cell subsets across the various immune sites and that B cells are one of the early responders to infection, substantial knowledge gaps persist regarding their immunophenotypic profile, functional ...
    • Understanding size selectivity of trawls using structural models: Methodology and a case study on fish sorting grids 

      Jacques, Nadine Louise; Herrmann, Bent; Brinkhof, Jesse Vallevik; Sistiaga, Manu (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-27)
      Fish behaviour affects the performance of selection devices in fishing gears. Traditionally, fish behaviour in relation to selection devices is assessed by direct observation. However, this approach has limitations, and the observations are not explicitly incorporated in the selectivity models. Further, underwater observations and quantification of fish behaviour can be challenging. In this study ...
    • Co-designing tourism experience systems: A living lab experiment in reflexivity 

      Smit, Bert; Melissen, Frans; Font aulet, Xavier (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-01-25)
      Stakeholders must purposely reflect on the suitability of process models for designing tourism experience systems. Specific characteristics of these models relate to developing tourism experience systems as integral parts of wider socio-technical systems. Choices made in crafting such models need to address three reflexivity mechanisms: problem, stakeholder and method definition. We systematically ...
    • Descriptive analyses of knowledge, attitudes, and practices regarding rabies transmission and prevention in rural communities near wildlife reserves in Uganda: a One Health cross-sectional study 

      Atuheire, Collins G. K.; Okwee-Acai, James; Taremwa, Martha; Terence, Odoch; Ssali, Sarah N.; Mwiine, Frank N.; Kankya, Clovice; Skjerve, Eystein; Tryland, Morten (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-07-19)
      Background Despite urban (domestic dog) rabies cycles being the main target for rabies elimination by 2030, syl‑ vatic (wildlife) rabies cycles can act as rabies spillovers especially in settlements contiguous to wildlife reserves. Rural communities next to wildlife reserves are characterized by unique socio-demographic and cultural practices includ‑ ing bat consumption, hunting for bushmeat, and ...
    • Abandoned, lost, or otherwise discarded fishing gear in coastal fisheries: A case study in the Baltic Sea coastal waters of Latvia 

      Rijkure, Astrida; Cerbule, Kristine; Megnis, Janis (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-29)
      Abandoned, lost, or otherwise discarded fishing gear (ALDFG) is considered a problem of global concern which can cause considerable negative environmental and socioeconomic consequences. Due to use of slowly degrading plastic materials in fishing gear construction, ALDFG can remain in marine environment for decades. Enclosed marine environments are particularly vulnerable for all types of pollution ...
    • Shifting invertebrate distributions in the Barents Sea since pre-1900 

      Calvet, Nathalie; Bluhm, Bodil Annikki Ulla Barbro; Yoccoz, Nigel Gilles; Altenburger, Andreas (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-08-23)
      Marine invertebrate habitats are experiencing warming, and oceanic carbon dioxide levels are on the rise. These changes result in shifts in species distributions. Monitoring and understanding these shifts provides vital information because each species plays a unique ecological role, and the human utilization of marine species is intrinsically linked to their geographic locations. Here, we ...
    • c-fos induction in the choroid plexus, tanycytes and pars tuberalis is an early indicator of spontaneous arousal from torpor in a deep hibernator 

      Markussen, Fredrik Andreas Fasth; Cázarez-Márquez, Fernando; Melum, Vebjørn Jacobsen; Hazlerigg, David Grey; Wood, Shona Hiedi (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-23)
      Hibernation is an extreme state of seasonal energy conservation, reducing metabolic rate to as little as 1% of the active state. During the hibernation season, many species of hibernating mammals cycle repeatedly between the active (aroused) and hibernating (torpid) states (T–A cycling), using brown adipose tissue (BAT) to drive cyclical rewarming. The regulatory mechanisms controlling this process ...
    • Trade-off between drag and catch performance when designing zooplankton trawls 

      Kostak, Enis Noyan; Grimaldo, Eduardo; Brinkhof, Jesse Vallevik; Herrmann, Bent (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-10)
      The aquaculture sector is in pursuit of sustainable and cost-effective raw materials for feed, and the copepod Calanus finmarchicus is a marine zooplankton species of commercial interest because of its high abundance in northern areas. These copepods have the potential to meet the demand for vast quantities of marine raw materials. However, the lack of an energy- and catch-efficient trawl technology ...