A global meta-analysis of the ecological impacts of nonnative crayfish

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Environmental DNA (eDNA) detects the invasive crayfishes Orconectes rusticus and Pacifastacus leniusculus in large lakes of North America (2017, background): “…are two of the most widespread and impactful invasive crayfishes on the planet (Lodge et al., 2012a); their ecological effects include dramatically reducing populations of aquatic plants, other macroinvertebrates, native crayfishes, and some imperiled vertebrate species (Twardochleb et al., 2013).”
Unravelling the global invasion routes of a worldwide invader, the red swamp crayfish (Procambarus clarkii) (2019, background): “…causing 114 serious damage to biodiversity (e.g., other crayfish species, fish, amphibians, macroinvertebrates 115 and macrophytes) and to human infrastructure and ecosystem services (e.g., irrigation canals, water 116 quality, rice crops, etc.) (Geiger et al., 2005; Twardochleb et al., 2013).”