NRW woodland and grassland ecologists used the Habitat Survey of Wales Phase 1 digital data; Lowland Grassland Survey of Wales Phase 2 digital data; Lowland Peatland Survey of Wales Phase 2 Features data; Calaminarian Grassland Annex 1 habitat map; Glastir Grassland Fungi data; and Chough woodland areas to identify areas of sensitivity to woodland creation. These datasets include land-cover types such as acid grassland, blanket bog, or purple moor grass and rush pastures.