Blar i NINA Brage på forfatter "Thalfeldt, Mart"
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Annual and diel activity cycles of a northern population of the large migratory cyprinid fish asp (Leuciscus aspius)
Kärgenberg, Einar; Sandlund, Odd Terje; Thorstad, Eva Bonsak; Thalfeldt, Mart; Økland, Finn; Kaasik, Ants; Tambets, Meelis (Peer reviewed; Journal article, 2022)Little is known about the exact movement parameters of migratory cyprinids listed as conservation priorities. A northern population of predatory asp, listed on the Bern Convention Appendix III, was studied in a near ... -
Behaviour and mortality of downstream migrating Atlantic salmon smolts at a small power station with multiple migration routes
Kärgenberg, Einar; Thorstad, Eva Bonsak; Järvekülg, Rein; Sandlund, Odd Terje; Saadre, Ene; Økland, Finn; Thalfeldt, Mart; Tambets, Meelis (Journal article; Peer reviewed, 2019)Salmon smolts were released upstream of a run‐of‐river hydropower site and recaptured downstream for inspection. Descending fish behaviour through three possible migration routes (turbines, fishway, spillway) was analysed ... -
Effects of a dispersal barrier on freshwater migration of the vimba bream (Vimba vimba)
Tambets, Meelis; Kärgenberg, Einar; Thorstad, Eva Bonsak; Sandlund, Odd Terje; Økland, Finn; Thalfeldt, Mart (Journal article; Peer reviewed, 2018)To study the effects of a dispersal barrier on migration of the semi-anadromous vimba bream in the Pärnu River, Estonia, we tagged thirty fish with acoustic transmitters and released above the barrier. Tagged fish showed ...