Observations of bilberry and rhododendron

 
All datasets on the National Biodiversity Network to which JNCC has been given download access permission were used. The facilities on the NBN Gateway were used to search for and download observations of Vaccinium myrtillus and Rhododendron ponticum. Observations where then extracted from the downloaded files where the precision of the grid reference was 1km or better and where the date of observation was from 1985 onwards. Observations given at a precision of only 10km (which is the case for the majority of data for vascular plants on the NBN Gateway) was not used. This resulted in 3,653 observations of Vaccinium myrtillus and 1,722 of Rhododendron ponticum.
 
Observations of bilberry Observations of rhododendron
Observations of bilberry Vaccinium myrtillus Observations of rhododendron Rhododendron ponticum