Blar i forfatter "Vadstein, Olav"

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    • Seeding as a start-up strategy for improving the acclimation of freshwater nitrifying bioreactors to salinity stress 

      Navada, Sharada; Gaumet, Frederic; Tveten, Ann-Kristin; Kolarevic, Jelena; Vadstein, Olav (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-20)
      Recirculating aquaculture systems (RAS) for anadromous fish such as salmonids often require salinity changes during the production cycle. However, high or variable salinity can disrupt the biological nitrification process, which can be detrimental to the fish due to the accumulation of toxic ammonia or nitrite. Thus, it is vital to maintain sufficient nitrification capacity in RAS during salinity ...

    • Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation 

      Mathew, K Avarachen; Ardelan, Murat Van; Villa Gonzalez, Susana; Vadstein, Olav; Sajith Vezhapparambu, Veena; Leiknes, Øystein; Mankettikkara, Rahman; Olsen, Yngvar (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-19)
      Fjord systems in higher latitudes are unique coastal water ecosystems that facilitate the study of dissolved organic matter (DOM) dynamics from surface to deeper waters. The current work was undertaken in the Trondheim fjord characterized by North Atlantic waters, and compared DOM fractions from three depths - surface (3 m), intermediate (225 m) and deep (440 m) in four seasons, from late spring to ...