Prey availability and juvenile Atlantic salmon feeding during winter in a regulated subarctic river subject to loss of ice cover

• Published in: Hydrobiologia Vol. 644; no. 1; pp. 217 - 229
• Main Authors: Johansen, M, Thorstad, E. B, Rikardsen, A. H, Koksvik, J. I, Ugedal, O, Jensen, A. J, Saksgård, L, Næsje, T. F
• Format: Journal Article
• Language: English
• Published: Dordrecht Dordrecht : Springer Netherlands 01.05.2010; Springer Netherlands; Springer; Springer Nature B.V
• Subjects: Animal and plant ecology; Animal, plant and microbial ecology; Applied sciences; benthic organisms; Benthos; Biological and medical sciences; Biomedical and Life Sciences; Buildings. Public works; Chironomidae; Ecology; energy; Ephemeroptera; Exact sciences and technology; Freshwater & Marine Ecology; Fundamental and applied biological sciences. Psychology; General aspects; habitats; Hydraulic constructions; Hydroelectric power; Ice; Ice cover; Invertebrates; Life Sciences; Marine; Mortality; Norway; periodicity; Plecoptera; Predation; Prey; Primary Research Paper; Riparian ecology; River flow control. Flood control; Rivers; Salmo salar; Salmon; Simuliidae; stomach; Synecology; Trichoptera; water power; winter; Zoology; Zooplankton; Norway; ANE, Norway; Norway, Alta; Regulated river; Benthos; Prey size; Stomach contents; Invertebrate drift; Salmonidae; Availability; Salmo salar; Loss; Ice; Subpolar zone; Young animal; Feeding; Prey; Aquatic environment; Vertebrata; Hydrobiology; Diet; Pisces; Riverflow control; Drift; Invertebrata

Increased mortality of juvenile Atlantic salmon (Salmo salar L.), related to lowered levels of stored energy following the loss of ice cover during winter, has been observed after hydropower development in the subarctic River Alta, northern Norway. Drift samples were compared to examine if drift den...