Artikler, rapporter og annet (arktisk og marin biologi): Recent submissions

Now showing items 1441-1460 of 1643

    • Intraspecific differences in lipid content of calanoid copepods across fine-scale depth ranges within the photic layer 

      Zarubin, Margarita; Farstey, Viviana; Wold, Anette; Falk-Petersen, Stig; Genin, Amatzia (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)

    • Effects of salmon lice on sea trout 

      Thorstad, Eva Bonsak; Todd, Christopher D.; Bjørn, Pål Arne; Gargan, Patrick G.; Vollset, Knut Wiik; Halttunen, Elina; Kålås, Steinar; Uglem, Ingebrigt; Berg, Marius; Finstad, Bengt (Research report; Forskningsrapport, 2014)

    • Community-wide mesocarnivore response to partial ungulate migration 

      Henden, John-André; Stien, Audun; Bårdsen, Bård-Jørgen; Yoccoz, Nigel Gilles; Ims, Rolf Anker (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)

    • Forsøk med trål og ekkolodd i Mjøsa, 2012 

      Gjelland, Karl Øystein; Rustadbakken, Atle; Haugen, Thrond O; Sandlund, Odd Terje (Research report; Forskningsrapport, 2013)
      Trål har i liten grad vore brukt ved undersøkingar av fiskesamfunn i norske innsjøar. Gjennom innføringa av Vanndirektivet har Norge forplikta seg til meir regulær oppfølging av den økologiske tilstanden i større vassførekomstar. Tettleik, rekruttering, artsfordeling og vekst hjå fisk er alle parametrar der ein kan forvente relativt rask respons på miljøendringar. Det er derfor viktig å ha ...

    • Monochromatic light increases anthocyanin content during fruit development in bilberry 

      Zoratti, Laura; Sarala, Marian; Carvalho, Elisabete; Karppinen, Katja; Martens, Stefan; Giongo, Lara; Häggman, Hely; Jaakola, Laura (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)

    • Genetic Inactivation of European Sea Bass (Dicentrarchus labrax L.) Eggs Using UV-Irradiation: Observations and Perspectives 

      Colléter, Julie; Penman, David J; Lallement, Stephane; Fauvel, Christian; Hanebrekke, Tanja Lexau; Osvik, Renate Døving; Eilertsen, Hans Christian; D'Cotta, Helena; Chatain, Beatrice; Peruzzi, Stefano (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      Androgenesis is a form of uniparental reproduction leading to progenies inheriting only the paternal set of chromosomes. It has been achieved with variable success in a number of freshwater species and can be attained by artificial fertilization of genetically inactivated eggs following exposure to gamma (γ), X-ray or UV irradiation (haploid androgenesis) and by restoration of diploidy by suppression ...

    • The quest for a true One Health perspective of brucellosis 

      Godfroid, Jacques; De Bolle, Xavier; Roop, R. Martin I.I.; O'Callaghan, David; Tsolis, Renée M.; Baldwin, Cynthia L.; Santos, Renato L.; McGiven, John A.; Olsen, Steven C.; Nymo, Ingebjørg Helena; Larsen, Anett Kristin; Al Dahouk, Sascha; Letesson, Jean-Jacques (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)

    • Potential drivers of sinking particle´s size spectra and vertical POC flux: Turbulence, phytoplankton and zooplankton 

      Wiedmann, Ingrid; Reigstad, Marit; Sundfjord, Arild; Basedow, Sünnje (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)

    • Status for ål i Siravassdraget 

      Thorstad, Eva Bonsak; Kroglund, Frode; Saksgård, Randi J.; Midtbø, Rolf (Research report; Forskningsrapport, 2014)
      Bakgrunnen for denne undersøkelsen var at de siste kjente observasjoner av ål i Sira-vassdraget var fra tidlig på 1990-tallet, og det ble stilt spørsmål om ålen som art hadde forsvunnet fra vassdraget. Formålene med prosjektet var å undersøke og vurdere: 1. Tilstand for ål i Siravassdraget. Fiske etter ål ved el-fiske, ruser, teiner og markliner ble gjennomført for å undersøke om og eventuelt hvor ...

    • Sjørøye – økologisk og/eller genetisk segregering? 

      Svenning, Martin; Præbel, Kim; Kanstad Hanssen, Øyvind; Falkegård, Morten (Research report; Forskningsrapport, 2013)
      Nedgang i fangstene av sjørøye har ført til behov for regulering av fisket, og i revideringen av elveforskriftene for fisket etter anadrom fisk de siste årene har det vært iverksatt innstramminger i fisket etter etter sjørøye. I slike sammenhenger er kunnskap om det genetiske forholdet mellom sjøvandrende og stasjonær røye innenfor et vassdrag en helt sentral og nødvendig kunnskapsbrikke for definering ...

    • Determination of plant silicon content with near infrared reflectance spectroscopy 

      Smis, Adriaan; Ancin Murguzur, Francisco Javier; Struyf, Eric; Soininen, Eeva M; Herranz, Jusdado Juan G; Meire, Patrick; Bråthen, Kari Anne (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-09-24)

    • Gut morphology of diploid and triploid Atlantic salmon (Salmo salar L.) 

      Peruzzi, Stefano; Hagen, Ørjan; Jobling, Malcolm (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      Triploid fish may differ from diploids in a number of morphological and physiological characteristics. The present study was undertaken to examine the effects of ploidy on the gut morphology of Atlantic salmon post-smolts (Salmo salar L.). For this purpose, we compared the intestinal length (relative gut length, RGL), pyloric caeca number and mass of commercially produced diploid and triploid siblings. ...

    • Growth and Gut Morphology of Diploid and Triploid Juvenile Atlantic Cod (Gadus morhua) 

      Vargas, Cecilia; Hagen, Ørjan; Solberg, Christel; Jobling, Malcolm; Peruzzi, Stefano (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      The objective of this paper was to compare the growth and gut morphology of juvenile diploid and triploid Atlantic cod (Gadus morhua) reared under similar conditions. Individually tagged 36-week old diploid (mean weight 49.3 ± 13.8 g) and triploid (mean weight 43.6 ± 11.2) juvenile cod were measured at intervals during a 29-weeks growth trial. Data for weight, length, condition factor (K), hepato-somatic ...

    • Metatranscriptomic Analysis of Arctic Peat Soil Microbiota 

      Tveit, Alexander Tøsdal; Tim, Urich; Svenning, Mette Marianne (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-07-11)
      Recent advances in meta-omics and particularly metatranscriptomic approaches have enabled detailed studies of the structure and function of microbial communities in many ecosystems. Molecular analyses of peat soils, ecosystems important to the global carbon balance, are still challenging due to the presence of coextracted substances that inhibit enzymes used in downstream applications. We sampled ...

    • Phenotype-environment association of the oxygen transport system in trimorphic European whitefish (Coregonus lavaretus) populations 

      Evans, Melissa; Præbel, Kim; Peruzzi, Stefano; Amundsen, Per-Arne; Bernatchez, Louis (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-05-23)

    • Light-controlled flavonoid biosynthesis in fruits 

      Zoratti, Laura; Karppinen, Katja; Escobar, Ana Luengo; Häggman, Hely; Jaakola, Laura (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-10-09)

    • The Arctic Sunrise Incident: A Multi-faceted Law of the Sea Case with a Human Rights Dimension 

      Oude Elferink, Alexander G. (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)

    • Sources of variation in small rodent trophic niche: New insights from DNA metabarcoding and stable isotope analysis 

      Soininen, Eeva M; Ehrich, Dorothee; Lecomte, Nicolas; Yoccoz, Nigel Gilles; Tarroux, Arnaud; Berteaux, Dominique; Gauthier, Gilles; Gielly, Ludovic; Brochmann, Christian; Gussarova, Galina; Ims, Rolf Anker (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-05-15)

    • The role of predation and food limitation on claims for compensation, reindeer demography and population dynamics 

      Tveraa, Torkild; Stien, Audun; Brøseth, Henrik; Yoccoz, Nigel Gilles (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-10)
      1.A major challenge in biodiversity conservation is to facilitate viable populations of large apex predators in ecosystems where they were recently driven to ecological extinction due to resource conflict with humans. 2. Monetary compensation for losses of livestock due to predation is currently a key instrument to encourage human–carnivore coexistence. However, a lack of quantitative estimates ...

    • An assessment of MOSJ - The state of the marine environment around Svalbard and Jan Mayen 

      Fauchald, Per; Arneberg, Per; Berge, Jørgen; Gerland, Sebastian; Kovacs, Kit M.; Reigstad, Marit; Sundet, Jan Henry (Research report; Forskningsrapport, 2014-05)