Browsing USN Open Archive by Author "Olk, Tom Robin"
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Arctic charr (Salvelinus alpinus) farming in southern Norway
Olk, Tom Robin (Doctoral dissertations at the University of South-Eastern Norway;85, Doctoral thesis, 2021-02-03)Arctic charr (Salvelinus alpinus) is a stenothermic cold-water fish with a circumpolar distribution. The species features large variations in life history, as populations are anadromous, riverine or lake dwelling. It occurs ... -
Brood‐stock management and early hatchery rearing of Arctic charr (Salvelinus alpinus (Linnaeus))
Olk, Tom Robin; Thorarensen, Helgi Thor; Jeuthe, Henrik; Wollebæk, Jens; Lydersen, Espen (Journal article; Peer reviewed, 2019)Arctic charr (Salvelinus alpinus (Linnaeus)) is a stenothermic cold‐water fish, which has been cultured in Northern Europe and North America since the 1980s. The industry has remained relatively small with an annual ... -
Factors determining parasite abundance in European perch, Perca fluviatilis, European whitefish, Coregonus lavaretus, and Arctic charr, Salvelinus alpinus, in an oligotrophic lake, southern Norway
Olk, Tom Robin; Henriksen, Ann-Cecilie; Dolven, Solveig Irene; Haukø, Mathias Leithe; Lydersen, Espen; Mo, Tor Atle (Peer reviewed; Journal article, 2020)Temporal and spatial variations in macroparasite status were investigated in European perch, Perca fluviatilis, European whitefish, Coregonus lavaretus, and Arctic charr, Salvelinus alpinus in Lake Norsjø (Southern Norway), ... -
Formalin treatments before eyeing and hand-picking of Arctic charr (Salvelinus alpinus) eggs; re-evaluating the timing of antifungal treatments
Olk, Tom Robin; Wollebæk, Jens; Lydersen, Espen (Peer reviewed; Journal article, 2019)Arctic charr (Salvelinus alpinus) eggs in hatcheries are treated for fungal infections using formalin before, and hand-picking during the eyed stage. The relative effectiveness of these two treatments was evaluated using ... -
Seasonal Variations in the Use of Profundal Habitat among Freshwater Fishes in Lake Norsjø, Southern Norway, and Subsequent Effects on Fish Mercury Concentrations
Olk, Tom Robin; Karlsson, Kent Magnus Tobias; Lydersen, Espen; Økelsrud, Asle (Journal article; Peer reviewed, 2016)This study is based on monthly sampling of fish from grates mounted at an industrial water intake, located at a depth of 50 m in Lake Norsjø (Southern Norway) during the year 2014, to investigate seasonal variations in the ... -
Seasonal variations in the use of profundal habitat among freshwater fishes in Lake Norsjø, southern Norway, and subsequent effects on fish mercury concentrations.
Olk, Tom Robin; Karlsson, Tobias (Master thesis, 2016-01-18)This study is based on monthly sampling of fish from an industrial water intake, located at the bottom of Lake Norsjø, at a depth of 50 m, during one year (2014). By this sampling strategy, we have obtained unique information ... -
Wild and Farmed Arctic Charr as a Tourism Product in an Era of Climate Change
Helgadóttir, Guðrún; Renssen, Hans; Olk, Tom Robin; Oredalen, Tone Jøran; Haraldsdóttir, Laufey; Skúlason, Skúli; Thorarensen, Helgi (Journal article; Peer reviewed, 2021)The topic investigated is the social-ecological system of Arctic charr (Salvelinus alpinus) fishing and aquaculture as a tourism product in an era of climate change. Arctic charr is a resilient salmonid species that was ...