Sökning: "harrpopulation"
Hittade 1 uppsats innehållade ordet harrpopulation.
1. Tillväxtmönster och åldersstrukturer hos opåverkade bestånd av strömlevande Arktisk harr i Sibirien
L3-uppsats, SLU/Dept. Of Aquatic ResourcesSammanfattning : It is hard to find streaming waters where humans haven't affected the fish populations or the running water it self. In many streams the fish populations are over harvested and this results in a lack of older and larger fish. This is also the situation for many populations of Grayling (Thymallus spp.). LÄS MER
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