Sökning: "Otter Lutra lutra"

Hittade 2 avhandlingar innehållade orden Otter Lutra lutra.

  1. 1. The Otter (Lutra lutra) in Sweden : Contaminants and Health

    Författare :Anna Roos; Jan Örberg; Björn Brunström; Katrin Lundstedt-Enkel; Susan Shaw; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Otter Lutra lutra ; PCB; DDT; PFAAs; reproduction; bone; time trends; Biologi med inriktning mot ekotoxikologi; Biology with specialization in Environmental Toxicology;

    Sammanfattning : In the 1950s the otter started to decline in numbers and distribution in Sweden and other parts of Europe. In 1972 a game law came into force, listing otter as a species that if found dead should be reported and sent to the authorities. The numbers of dead otters reported from different areas indicate population status and distribution. LÄS MER

  3. 2. Conservation Genetics of the Eurasian Otter in Sweden

    Författare :Johanna Arrendal; Mats Björklund; Carles Vilà; Ralph Tiedemann; Uppsala universitet; []
    Nyckelord :Ecology; in situ conservation; individual identification; microsatellites; mtDNA; noninvasive genetic sampling; population dynamics; population size; PVA; restocking; Ekologi; Lutra lutra;

    Sammanfattning : In this thesis, molecular genetic methods were used to study a threatened species, the Eurasian otter. Estimates of population size and population dynamics parameters were obtained, the genetic effects of a restocking program was evaluated, and a population viability analysis was conducted to assess which demographic parameters are most important for the future viability of an otter population. LÄS MER