Blar i forfatter Artikler, rapporter og annet (Norges fiskerihøgskole) "Landfald, Bjarne"

Viser treff 1-8 av 8

    • Bakterievekst under naturtørking av tørrfisk: Sammenligning av normal- og mucosovev 

      Bjørkevoll, Ingebrigt; Landfald, Bjarne; Ernstsen, Marita Holm; Joensen, Sjurdur; Tidemann, Even (Research report; Forskningsrapport, 2008-04)
      Mikroorganismer antas å påvirke utviklingen av lukt og smak i tørrfisk, men det er lite er kjent om hvilke organismer som dominerer under tørkeprosessen. Samtidig er mikrobielle forhold er også antatt å være essensielle for utviklingen av mucoso, som er en kvalitetsfeil i tørrfisk der deler av fiskemuskelen blir oppløst og slimaktig. Slike partier må skjæres bort under bløtingsprosessen. Denne ...

    • Conservation of Genomic Information in Multiple Displacement Amplified Low-Quantity Metagenomic Material from Marine Invertebrates 

      Elvheim, Andrea Iselin; Li, Chun; Landfald, Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-02)
      Marine invertebrate microbiomes have been a rich source of bioactive compounds and interesting genomic features. In cases where the achievable amounts of metagenomic DNA are too low for direct sequencing, multiple displacement amplification (MDA) can be used for whole genome amplification. However, MDA has known limitations which can affect the quality of the resulting genomes and metagenomes. ...

    • Dynamics of bacterial community exposed to hydrocarbons and oleophilic fertilizer in high-Arctic intertidal beach 

      RØberg, stian; Østerhus, Jan ivar; Landfald, Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      Exposure of pristine microbial environments to hydrocarbon contamination stimulates growth of the initially small fraction of indigenous hydrocarbon-degrading bacteria. Custom-made oleophilic fertilizers have been demonstrated to promote oil bioremediation by boosting this proliferation. In the present study, the temporal dynamics of the bacterial community structure and the individual influences ...

    • 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 ...

    • Perturbation of seafloor bacterial community structure by drilling waste discharge 

      Nguyen, Tan Thi; Cochrane, Sabine K.J.; Landfald, Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-10-31)
      Offshore drilling operations result in the generation of drill cuttings and localized smothering of the benthic habitats. This study explores bacterial community changes in the in the upper layers of the seafloor resulting from an exploratory drilling operation at 1400 m water depth on the Barents Sea continental slope. Significant restructurings of the sediment microbiota were restricted to the ...

    • Polar front associated variation in prokaryotic community structure in Arctic shelf seafloor 

      Nguyen, Tan Thi; Landfald, Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-01-23)
      Spatial variations in composition of marine microbial communities and its causes have largely been disclosed in studies comprising rather large environmental and spatial differences. In the present study, we explored if a moderate but temporally permanent climatic division within a contiguous arctic shelf seafloor was traceable in the diversity patterns of its bacterial and archaeal communities. ...

    • Seafloor deposition of water-based drill cuttings generates distinctive and lengthy sediment bacterial community changes 

      Nguyen, Tan Thi; Paulsen, John E.; Landfald, Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-27)
      The spatial extent and persistence of bacterial change caused by deposition of water-based drill cuttings on the seafloor were explored by a community-wide approach. Ten centimeter sediment cores were sampled along transects extending from ≤15 m to 250 m from three nearby drilling sites in the southern Barents Sea. Eight months, 8 years and 15 years, respectively, had passed since the completion of ...

    • Viral assemblage variation in an Arctic shelf seafloor 

      Nguyen, Tan Thi; Robertsen, Espen Mikal; Landfald, Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-09)
      Spatial differences in microbial communities are observable even in habitats with moderate environmental variation, such as within the pelagic zone or seafloor of geographically finite regions of the oceans. Here we explore whether biogeographical variations are also manifested at this level in the structure of viral assemblages by comparing DNA viromes from the Barents Sea upper seafloor, collected ...