Líffræðifélag Íslands - biologia.is
Líffræðiráðstefnan 2021
Erindi/veggspjald / Talk/poster E94
Höfundar / Authors: Gustav Hellström (1), Daniel Palm (1), James Loose (1), Tomas Brodin (1)
Starfsvettvangur / Affiliations: 1. Department of Wildlife, Fish, and Environmental Studies Faculty of Forest Sciences Swedish University of Agricultural Sciences
Kynnir / Presenter: Gustav Hellström
Arctic charr and brown trout are highly valued gamefish in Sweden, and many populations experience considerable pressure from recreational fishing. Effectively managing these fisheries has proven difficult as reliable biological data of charr and trout often are lacking, making regulations blunt and sometimes non-functional. This is especially true for populations in larger lakes, where traditional monitoring methods often are inadequate to provide detailed data on key parameters such as survival, spawning and migration needed for sensible and functional management regulations. Acoustic telemetry is an aquatic tracking technology that enables gathering of high-resolution data on fish behavior over large spatial scales and over long time. Here we present multiple cases on how acoustic telemetry has been used to greatly improve management and conservation of charr and trout in large lakes in Sweden, as well as to increase our understanding of basic ecological and evolutionary processes shaping these species.