Svenska och finska forskare ska undersöka varför det finns så lite lax i våra älvar just nu.
En teori är att minskningen av strömming i Östersjön har orsakat matbrist hos de unga laxarna när de ska växa sig stora i havet.
En teori är att minskningen av strömming i Östersjön har orsakat matbrist hos de unga laxarna när de ska växa sig stora i havet.
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