Welcome to the Multi-Crash Project

Biological invasions have wide-ranging effects on ecosystems, disrupting species interactions and ecological processes.  The introduction of the signal crayfish Pacifastacus leniusculus in pristine rivers of Portugal and Spain provides an opportunity to study these changes without interference from other variables. The project aims to assess the ecological impacts of the crayfish on various aspects such as prey populations, higher trophic levels, invertebrate biodiversity, and nutrient cycling. Researchers expect significant effects, particularly on prey and higher trophic levels. They will also investigate how crayfish impacts extend to adjacent terrestrial areas. By using traditional and modern ecological methodologies, the research team aims to produce valuable findings to support invasion management.