Sökning: "David Östby"
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1. Sampling methods of the wels catfish (Silurus glanis) in freshwater lakes : management of a vulnerable speciesMaster-uppsats, SLU/Dept. Of Aquatic Resources
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