Threats

The noble crayfish is on the edge of extinction because of human activity. During last 100 years from over 474 known sites of harvesting of this species in the Pomeranian District only about 25 sites still exist. Main reasons for its extinction are: crayfish plaque, invasions of alien crayfish species, habitat destruction, overexploitation of resources, invalid fish-farming (fish stocking).
 

 

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