Itämeren hyljekantojen kehitystä esiteltiin Arkipelagian iltamissa
Kuvat: Jouko Högmander Itämeren hyljekannat ovat vankistuneet ja sen myötä myös haitat kalastukselle ovat kasvaneet. Onko metsästys keino rajoittaa kannan kasvua vai olisiko siitä myös elinkeinoksi? Hyljeasioita pohdittiin Arkipelagia-seuran iltamissa maaliskuussa. Hyljekannan koon arviointi on pohja suojelu- ja kannanhoitotoimille. Hyljetutkija Markus Ahola Naturhistoriska Riksmuseetista kuvasi hyljekantojen koon arviointimenetelmiä, jotka eroavat eri hyljelajien välillä. Ha
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