Restoration of moth abundance in re-created species-rich grassland. Calcareous grassland, a European priority habitat, is noted for its diverse botanic and invertebrate interest, but has declined considerably in extent as a result of changes in land use. A recent paper, published in Biological Conservation, assesses the way in which moth abundance and the number of moth species are affected by the restoration of species-rich semi-natural grassland from intensively farmed arable fields, and compares moth populations in restored habitats with those of existing semi-natural chalk-grassland systems.