Abstract
The research is designed to assess the effect of urban development and number of visitors on the distribution and abundance of nightjar, woodlark and Dartford warbler on the Dorset Heathlands and Thames Basin Heaths SPA; assess the extent to which the negative correlation of nightjar and woodlark numbers with urban development in Dorset is replicated in the Thames Basin Heaths, and identify the key factors which determine how the two sites compare; assess how habitat and visitor pressure interact to influence the distribution and abundance of the three Annex 1 species in the two SPAs; map visitor pressure and suitable habitat and identify areas where access and habitat management should be targeted to sustain the site populations of the three Annex 1 species; and develop a method of predicting the effect of habitat and visitor management on the number and distribution of the three Annex 1 species
United Kingdom