D7. Support land managers to create more resilient landscapes through the development and implementation of strategies that reduce the risk and spread of invasive non-native species, and respond to threats from pests and diseases that threaten the environment of the National Park. Rationale: Invasive non-native species, pests and diseases are one of the biggest threats to biodiversity worldwide, and to the biodiversity of the National Park. Current examples include: the impacts of chalara (ash dieback) on upland ash woodlands; the impacts of grey squirrel on red squirrel populations; the near-wiping out of native crayfish by American Signal crayfish; and the spread of Himalayan Balsam. Where practical, reducing and managing the potential impacts of invasive non-native species (through prevention of spread and strategic action) will assist in achieving many of the other objectives in this Plan. Lead partner: Yorkshire Dales Biosecurity & INNS Working Group; Supporting partners: Yorkshire Dales National Park Authority; Yorkshire Dales Rivers Trust; Ribble Rivers Trust; Environment Agency; Natural England; Yorkshire Water; Yorkshire Wildlife Trust; Forestry Commission; National Trust; Further information: Cost over 5 years: Funding shortfall: Related objectives: A1; C1; C2; C3; F6 Ecosystem services: Biodiversity; Regulating pests; Genetic diversity; Climate regulation; Timber provision Trade-offs: None Baseline: No strategies in place. Ad hoc activity on some species (e.g. Japanese Knotweed) Progress: Work to identify priority species for action is due to be completed by March 2020.