Fig. 5: Marbled crayfish population size estimate and growth simulation at Lake Reilingen.

A Picture of Lake Reilingen, a small (9 ha) lake in Germany with an established marbled crayfish population. Picture provided by Sina Tönges. B Bathymetric map of Lake Reilingen, generated with Deeper Smart Sonar software. Water depths are indicated by color, North is indicated by the arrowhead. C Positions of the 18 traps used for the population size estimate. Scale bar: 100 m. Map data: Google, Maxar Technologies. D Marbled crayfish population growth kinetics simulations. The horizontal dashed line represents the genetic variability of 1e+09 in the current Lake Reilingen population. Colored lines show the predicted genetic variability for exponential, logistic, and Allee growth models (see “Methods” for details). Dashed colored lines indicate error margins (SE).