Among demons and killers: current and future potential distribution of two hyper successful invasive gammarids

Abstract Biological invasions represent one of the main contemporary pressures facing freshwater ecosystems, and a better understanding invasive species potential distributions is essential to prepare for future stressors. Crustacean invaders contribute significantly global with Ponto-Caspian region being primary donor areas Palearctic. The amphipods Dikerogammarus villosus haemobaphes , popularly known as “killer” “demon” shrimps, are emblematic successful European freshwaters. However, geographical in which abiotic environment potentially suitable them have not been investigated. To address this gap, current were studied Western Palearctic considering two scenarios time periods (2050 2070) well association between anthropogenic activities individual habitat suitability. Results show large central-western Europe currently both indicate some range expansion within colder areas. In particular, D. has expand its further west southern parts Europe. Scenarios climate change don’t provide evidence compared conditions suggest reduction overlap most reveal lowland at greatest risk colonisation significant amphipods. outcomes research could be used by resource managers preparing managing changes facilitate decision-making monitoring control.