Viser treff 559-578 av 930

    • Measuring capacity utilization in fisheries using physical or economic variables: A data envelope analysis of a Vietnamese purse seine fishery 

      Cao, Thi Hong Nga; Eide, Arne; Armstrong, Claire W.; Long, Le Kim (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-26)
      Data Envelopment Analysis (DEA) studies of fisheries usually apply output oriented capacity utilization based on physical measures. Although physical measures capture important input factors employed in fishing activities (such as boat size, engine power), economic measures directly reflect the cost of inputs employed. This case study investigates whether economic measures are vital or whether ...
    • Mechanical killing and bleeding 

      Midling, Kjell Øyvind; Olsen, Stein Harris (Conference object; Konferansebidrag, 2013-10-09)
    • Mechanical killing and bleeding 

      Midling, Kjell Øyvind; Olsen, Stein Harris (Conference object; Konferansebidrag, 2013-10-09)
    • Mechanistic model identifies increasing light availability due to sea ice reductions as cause for increasing macroalgae cover in the Arctic 

      Scherrer, Kim Josefin Niklasdotter; Kortsch, Susanne; Varpe, Øystein; Weyhenmeyer, Gesa Antonie; Gulliksen, Bjørn; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-04)
      In the Arctic, rising seawater temperatures and increasing underwater light caused by reductions in sea ice cover are expected to change the structure of arctic marine communities. Substantial, sometimes sudden, increases in macroalgal productivity and biomass have already been observed in arctic rocky bottom communities. These macroalgal responses have been attributed to increasing temperature and ...
    • Med lov og skjønn skal kysten forvaltes 

      Solås, Ann-Magnhild; Johnsen, Jahn Petter (Research report; Forskningsrapport, 2014)
      Gjennomgangen av lov- og regelverket viser at det skal ivareta mange hensyn. Lov- og regelverket er komplekst og følgelig vil også beslutningsprosessene være preget av denne kompleksiteten. De ulike lovene og forskriftene, og de bestemmelsene i hver enkelt lov og forskrift søker å ivareta både politiske, administrative og faglige hensyn. De forvaltes også på ulike politiske og administrative ...
    • Mellom marked og nettverk: Om fiskerirekruttering og sysselsettingsystemer i fiske 

      Johnsen, Jahn Petter; Vik, Jostein (Journal article; Tidsskriftartikkel; Peer reviewed, 2008-08-15)
      Denne rapporten er skrevet som en del av prosjektet "Networks or markets? The recruitment challenges in future fisheries and marine industries"; finansiert av Norges forskningsråd og Fiskeri og havbruksnæringens forskningsfond. Formålet med rapporten er å presentere kvantitativt datamateriale om sysselsettingssystemet i fiskeflåten. Rapporten bygger på et datamateriale fremskaffet gjennom telefonintervjuer ...
    • 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 ...
    • Metabarcoding of shrimp stomach content: harnessing a natural sampler for fish biodiversity monitoring 

      Siegenthaler, Andjin; Wangensteen Fuentes, Owen Simon; Soto, Ana Z.; Benvenuto, Chiara; Corrigan, Laura; Mariani, Stefano (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-28)
      Given their positioning and biological productivity, estuaries have long represented key providers of ecosystem services, and consequently remain under remarkable pressure from numerous forms of anthropogenic impact. The monitoring of fish communities in space and time are one of the most widespread and established approaches to assess the ecological status of estuaries and other coastal habitats, ...
    • Metabarcoding reveals high-resolution biogeographical and metaphylogeographical patterns through marine barriers 

      Antich, Adrià; Palacín, Creu; Zarcero, Jesús; Wangensteen, Owen S.; Turon, Xavier (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-29)
      Aim: It has been predicted that there should be concordance between biogeographical and phylogeographical processes structuring multi-species regional assemblages. We hypothesise that oceanographic barriers in the marine environment affect concomitantly the distribution and the connectivity of the marine biota, thus producing congruent biogeographical and phylogeographical structures. We also ...
    • Methanol-based acetoin production by genetically engineered Bacillus methanolicus 

      Drejer, Eivind Bøe; Chan, Dennis; Haupka, Carsten; Wendisch, Volker F.; Brautaset, Trygve; Irla, Marta Katarzyna (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-10)
      Methanol is an attractive alternative non-food feedstock for industrial fermentations that can be used instead of sugar-based raw materials. Here, the thermophilic and methylotrophic bacterium <i>Bacillus methanolicus</i> MGA3 was metabolically engineered to produce the platform chemical (<i>R</i>)-acetoin from methanol at 50 °C. Three different heterologous <i>alsSD/budAB</i> operons, each encoding ...
    • Microbial Community Dynamics during a Harmful Chrysochromulina leadbeateri Bloom in Northern Norway 

      Aalto, Nerea Johanna; Schweitzer, Hannah; Grann-Meyer, Erlend; Krsmanovic, Stina; Svenning, Jon Brage; Dalheim, Lars; Petters, Sebastian; Ingebrigtsen, Richard Andre; Hulatt, Christopher Jonathan; Bernstein, Hans Christopher (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-09)
      A harmful algal bloom occurred in late spring 2019 across multiple, interconnected fjords and bays in northern Norway. The event was caused by the haptophyte Chrysochromulina leadbeateri and led to severe fish mortality at several salmon aquaculture facilities. This study reports on the spatial and temporal succession dynamics of the holistic marine microbiome associated with this bloom by relating ...
    • Microbial danger signals control transcriptional induction of distinct MHC class I L lineage genes in Atlantic salmon 

      Svenning, Steingrim; Gondek-Wyrozemska, Agata T; van der Wal, Yorick Andreas; Robertsen, Børre; Jensen, Ingvill; Jørgensen, Jorunn B; Edholm, Eva-Stina Isabella (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-11)
      Antigen processing and presentation by major histocompatibility complex (MHC) molecules is a cornerstone in vertebrate immunity. Like mammals, teleosts possess both classical MHC class I and multiple families of divergent MHC class I genes. However, while certain mammalian MHC class I-like molecules have proven to be integral in immune regulation against a broad array of pathogens, the biological ...
    • Microbial trimethylamine-N-oxide as a disease marker: something fishy? 

      Landfald, Bjarne; Valeur, Jørgen; Berstad, Arnold; Raa, Jan (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-05-19)
      Production of trimethylamine-N-oxide (TMAO) via the gut microbiota has recently been proposed as an important pathophysiological mechanism linking ingestion of ‘unhealthy foods’, such as beef (containing carnitine) and eggs (containing choline), and the development of atherosclerosis. Hence, TMAO has gained attention as a novel biomarker for cardiovascular disease. However, fish and seafood contain ...
    • Microplastics in fish and shellfish - A threat to seafood safety? 

      Garrido Gamarro, Esther; Ryder, John; Elvevoll, Edel O.; Olsen, Ragnar Ludvig (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-23)
      Plastic litter in the oceans is a major environmental problem, and small size plastics (microplastics) have been detected in many species of fish and shellfish consumed by humans. The purpose of this paper is to evaluate the knowledge on microplastics in fish and shellfish in relation to a possible threat to seafood safety. In fish and crustacean species, the presence of microplastics has in most ...
    • Middlemen: good for resources and fishermen? 

      Pham, Thi Thanh Thuy; Flaaten, Ola; Skonhoft, Anders (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-16)
      This paper studies the role of middlemen in open-access fisheries and how the organization of the supply chains affects resource exploitation and the level and distribution of economic rent. Imperfect competition among middlemen can help ensure that fish stocks are not depleted, which is typically the case in open-access fisheries with competitive markets. Middlemen with market power can also induce ...
    • Migration patterns of Greenland halibut in the North Atlantic revealed by a compiled mark-recapture dataset 

      Vihtakari, Mikko; Elvarsson, Bjarki Pór; Treble, Margaret; Nogueira, Adriana; Hedges, Kevin; Hussey, Nigel E.; Wheeland, Laura; Roy, Denis; Ofstad, Lise Helen; Hallfredsson, Elvar Halldor; Barkley, Amanda; Estevez-Barcia, Daniel; Nygaard, Rasmus; Healey, Brian; Steingrund, Petur; Johansen, Torild; Albert, Ole Thomas; Boje, Jesper (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-18)
      Marine fisheries are often allocated to stocks that reflect pragmatic considerations and may not represent the species’ spatial population structure, increasing the risk of mismanagement and unsustainable harvesting. Here we compile mark–recapture data collected across the North Atlantic to gain insight into the spatial population structure of Greenland halibut (Reinhardtius hippoglossoides), an ...
    • Mikroalger i fôr, ny løsning for å redusere lusepåslag på laks – Faglig sluttrapport 

      Hustad, Anette; Vang, Birthe; Eilertsen, Hans Christian; Siikavuopio, Sten Ivar; Sæther, Bjørn-Steinar; Svalheim, Ragnhild Aven; Hansen, Espen Holst; Svenning, Jon Brage; Kousoulaki, Katerina; Whitaker, Ragnhild (Research report; Forskningsrapport, 2020-05)
      I dette prosjektet har vi testet ut en hypotese om at ved å erstatte vegetabilske oljer i fôr til oppdrettslaks med marine oljer, vil man kunne redusere lusepåslag hos laks. Vi har fôret laks med fire ulike fôr, der proteininnholdet er det samme, men oljen er variert. De ulike fôrene vi brukte var kontrollfôr som var standardfôr med vegetabilsk olje, og tre ulike testfôr der vegetabilsk olje ble ...
    • Miljøundersøkelse i vannforekomsten Finnfjord Indre i Lenvik Kommune, Troms fylke. 

      Svenning, Jon Brage (Research report; Forskningsrapport, 2016)
      Miljødirektoratet påla i mai 2015 Finnfjord AS og andre industribedrifter å gjennomføre vannovervåking i vannforekomsten bedriftene har utslipp til. Finnfjord AS engasjerte Akvaplan Niva AS til å utarbeide et program for miljøundersøkelse i vannforekomsten Finnfjorden Indre.(Akvaplan-niva AS Rapport: 7386-01). Programmet ble akseptert av Miljødirektoratet ...
    • Minimal Interspecies Interaction Adjustment (MIIA): inference of member-dependent interactions in microbiomes 

      Song, Hyun-Seob; Lee, Joon-Yong; Haruta, Shin; Nelson, William C.; Lee, Dong-Yup; Lindemann, Stephen R.; Fredrickson, Jim K.; Bernstein, Hans Christopher (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-11)
      An intriguing aspect in microbial communities is that pairwise interactions can be influenced by neighboring species. This creates context dependencies for microbial interactions that are based on the functional composition of the community. Context dependent interactions are ecologically important and clearly present in nature, yet firmly established theoretical methods are lacking from many modern ...
    • Mitochondrial Cytochrome Oxidase Subunit 1: A Promising Molecular Marker for Species Identification in Foraminifera 

      Girard, Elsa B.; Langerak, Anouk; Jompa, Jamaluddin; Wangensteen, Owen S.; Macher, Jan-Niklas; Renema, Willem (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-02)
      Traditional morphological methods for species identification are highly time consuming, especially for small organisms, such as Foraminifera, a group of shell-building microbial eukaryotes. To analyze large amounts of samples more efficiently, species identification methods have extended to molecular tools in the last few decades. Although a wide range of phyla have good markers available, for ...