Sökning: "Johan Lax"

Hittade 2 uppsatser innehållade orden Johan Lax.

1. 1. Linking habitat characteristics and juvenile density to quantify Salmo salar & Salmo trutta smolt production in River Sävarån, Northern Sweden

   L3-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

   Författare :Johan Molin; [2008]
   Nyckelord :mapping; flow; substratum; electro-fishing; parr; radio-telemetry; spawning;

   Sammanfattning : Even though the European Union has set up goals for rivers that support wild salmon to reach a production that is 50% of the MAXIMUM natural potential, there is a general lack of knowledge about the production capacity of salmonids in Sweden. To estimate the production of salmon and sea trout in the Sävarån river, I combined habitat mapping with available electro-fishing data. LÄS MER

3. 2. Störs laxens lekvandring i en kraftverkspåverkad älvsträcka?

   L3-uppsats, SLU/Dept. Of Aquatic Resources

   Författare :Johan Lundgren; [2006]
   Nyckelord :lax; lekvandring; flödesförändringar; torrfåran; radiomärkta; pejling;

   Sammanfattning : The upstream spawning migration of Atlantic salmon (Salmo salar) at the confluence area between the power-station outlet and the bypass-channel in river Umeälven (flow 430 m3s-1) was compared in 2004 and 2005, two years with different experimental flow-regimes. In 2004 the water flow in the bypass-channel was altered during the day with increased flows during the nights while the water flow in 2005 mainly was altered between the weekdays and weekends. LÄS MER