Avancerad sökning

Hittade 2 uppsatser som matchar ovanstående sökkriterier.

1. 1. Sampling methods of the wels catfish (Silurus glanis) in freshwater lakes : management of a vulnerable species

   Master-uppsats, SLU/Dept. Of Aquatic Resources

   Författare :David Östby; [2018]
   Nyckelord :sampling; gear; monitoring; Wels catfish; Silurus glanis; management; vulnerable spieces; electrofishing; acoustic camera; fyke nets; lake;

   Sammanfattning : Sweden hosts the northernmost natural population of wels catfish (Silurus glanis) in the world. The populations of the species decreased severely in the 20th century, mainly due to different sources of anthropogenic impact. LÄS MER

3. 2. Hotbild för ädellav Megalaria grossa i Uppland och på Gotland

   L3-uppsats, SLU/Dept. of Ecology

   Författare :Karolin Ring; [2008]
   Nyckelord :Megalaria grossa; ädellav; änge; ädellövträd; grova lövträd; asp; ask; löväng;

   Sammanfattning : Megalaria grossa is classified as Near treatened on the Swedish Red List. It is also a so called signals spieces, e. g. a spieces that function as an indicator, signalling a forest that is worthy of protection. LÄS MER