Sökning: "Frida Rosshagen"

Hittade 2 uppsatser innehållade orden Frida Rosshagen.

1. 1. Making nets more acoustically visible : Floats as passive mitigation measures to reduce bycatch of harbour porpoise (Phocoena phocoena) in gillnets

   Master-uppsats, SLU/Dept. Of Aquatic Resources

   Författare :Frida Rosshagen; [2023]
   Nyckelord :toothed whales; harbour porpoise; Phocoena phocoena; incidental capture; bycatch; fisheries; fishing gear; ; gillnet; mitigation; reduction; low-cost; passive acoustic reflector; float;

   Sammanfattning : Incidental capture in fishing gear is today affecting at least 112 marine mammal species worldwide and for many smaller toothed whale species (Odontocete), gillnets are considered to be the largest problem. Although some effective mitigation measures exists, these are often context specific and many might be hard to implement due to reasons such as high costs and maintenance. LÄS MER

3. 2. Social hierarki hos en koloni kalråttor (Heterocephalus glaber) i fångenskap

   Kandidat-uppsats, SLU/Dept. of Animal Environment and Health

   Författare :Frida Rosshagen; [2016]
   Nyckelord :Heterocephalus glaber; kalråtta; hierarki; rangordning; beteende;

   Sammanfattning : The naked mole-rat is one of few truly eusocial mammals that we know of today. They live in large colonies consisting of 25 to approximately 295 individuals that are separated in different work casters, mostly depending on age, size and reproductive activity. Almost every colony has a single dominant breeding female, the queen. LÄS MER