Search for dissertations about: "Johnny R Norrgård"

Found 2 swedish dissertations containing the words Johnny R Norrgård.

2. 1. Landlocked Atlantic salmon Salmo salar L. and trout Salmo trutta L. in the regulated River Klarälven, Sweden : Implications for conservation and management

   Author : Johnny R Norrgård; Eva Bergman; Hans Lundqvist; Karlstads universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; Biologi;

   Abstract : Conservation and management of migratory salmonids requires an understanding of their ecology at multiple scales, and a holistic view, including assessment of historical and present anthropogenic impacts. In the regulated River Klarälven, with 11 hydropower dams, populations of landlocked Atlantic salmon Salmo salar and migratory brown trout Salmo trutta have declined due to human activities. READ MORE

4. 2. Migration and quality of landlocked Atlantic salmon smolt : Implications for conservation and management

   Author : Johnny R Norrgård; Eva Bergman; Larry A Greenberg; Monika Schmitz; Martyn Lucas; Karlstads universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; acoustic telemetry; hatchery; life history; migration mortality; regulated rivers; Salmo salar; salmon; smolt; trout; Biology; Biologi;

   Abstract : Atlantic salmon Salmo salar has a complex life cycle, including long migrations and habitat shifts for both juveniles and adults. As such, salmon populations are vulnerable to habitat degradation and fragmentation along their migratory routes. READ MORE