Dead planet, living planet

Signal Crayfish invade Europe

Norway

Sweden Finland

Primary introductions and main propagation route of Signal Crayfish in Europe, from 1959 Minor direct introduction, mostly illegal European countries possessing wild population of Signal Crayfish

Latvia Lithuania

Denmark

Ireland

NL

UK

Germany

Poland

Belgium

Czech Republic

Slovakia

Austria

Hungary

Croatia Slovenia

France

Italy

Spain Portugal

Sources: personal communication with Stein Johnsen; Holdich, D. M., et al., A review of the ever increasing threat to European crayfish from non-indigenous crayfish species, 2009.

Swizerland

Grece

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