Essays about: "willow ptarmigan Lagopus lagopus"

Found 4 essays containing the words willow ptarmigan Lagopus lagopus.

  1. 1. Willow grouse (Lagopus lagopus) and rock ptarmigan (Lagopus muta) bag statistics and hunting pressure in Jämtland, Sweden : Relationships between CPUE, hunting pressure, different permits and nationality in two time periods; 2004-2012 and 2013-2021.

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Pattranit Kwanruen; [2022]
    Keywords : Ecology; Willow grouse; Rock ptarmigan; Lagopus lagopus; Lagopus muta; CPUE; hunting; Sweden;

    Abstract : Willow grouse ( Lagopus lagopus) and rock ptarmigan (Lagopus muta) are popular game birds in Sweden. I have analysed hunting statistics from Jämtland county in Sweden and investigated if there is a significant correlation between willow grouse density and Catch-Per-Unit-Effort (CPUE) by nationalities and type of permits. READ MORE

  3. 2. Species composition and age ratio of rock ptarmigan (Lagopus muta) and willow grouse (Lagopus lagopus) shot or snared in the county of Västerbotten : possible implementations for grouse winter management

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Alisa Brandt; [2016]
    Keywords : willow grouse; rock ptarmigan; lagopus; hunt; winter; management; age; species identification;

    Abstract : Hunting has a long tradition in Sweden and is also nowadays well established in society, provides considerable income through hunting tourism and functions as an important wildlife management and conservation tool. The most popular game species in the Swedish mountains are willow grouse (Lagopus lagopus) and rock ptarmigan (Lagopus muta). READ MORE

  4. 3. Förvaltningsverktyg för ripjakt i Jämtlands län

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Moa Walldén; [2014]
    Keywords : dalripa; Lagopus lagopus; småviltsjakt; ; avskjutningsstatistik; ; viltförvaltning;

    Abstract : Jakten på ripa är mycket populär bland svenska jägare och även bland jägare från andra länder. På grund av denna popularitet är rippopulationen på statens mark ovan odlingsgränsen och renbetesfjällen i Jämtlands län utsatta för ett högt jakttryck. Detta har lett till att jakten behöver regleras. READ MORE

  5. 4. Användande av avskjutningsstatistik i förvaltning : påverkar tidigare jakt CPUE?

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Mirja Lindberget; [2009]
    Keywords : CPUE; bag statistics; harvest management; effort; willow ptarmigan Lagopus lagopus ;

    Abstract : In fisheries, there is a long tradition to use catch data when evaluating changes in the stock and effects from harvesting. It is a common practice to use Catch Per Unit Effort (CPUE) as an index of population size, and several studies have investigated the properties of CPUE in relation to population abundance, spatial distribution and efficiency of gear. READ MORE