Register Login

Which data were used to target sites for BAP species?

Data used to show the distribution of pond-associated BAP species have been applied in different ways to produce the maps.

Distribution Maps

The distribution maps have been provided by the National Biodiversity Network (NBN) Gateway, partner organisations and/or species experts. Data for each species have been made available from a number of different sources (datasets). These are listed for each species within the Species Information sections of this website. Data are given at the 10km2 resolution and have been divided into current (1986-2010) and historical (prior to 1986) records.

Site Queries

Data used in site queries are based on the best available current information (1986-2010), to provide users with accurate information about the proximity of BAP species. For most species with a restricted distribution or poor powers of dispersal proximity will be at a resolution of 1km2. Where this level of detail is not available or for widespread or mobile species the data will be at a resolution of 10km2.

For example:

In the figure shown, a query within 5km of location E will return two species - pillwort and common toad. Pillwort data have been provided at 1km2, whilst common toad data have been provided at a resolution of 10km2.

Mineral Sites Data

The Nature After Minerals project has supplied a GIS database and GIS layer of active mineral sites (defined as those where work is actively taking place) in England. These data were collected in 2005 from 98 Mineral Planning Authorities as part of the Minerals Restoration Potential project.


Data on the distribution of species, particularly very rare ones can change. The maps have been produced using the best available information at the time of activation. The NBN Trust and data providers bear no responsibility for any further analysis or interpretation of the material, data and/or information supplied.

The Nature After Minerals project has supplied the mineral site data and covers England only. This information was collected in 2005 through the Minerals Restoration Potential project. At the time of activation this was the most up-to-date source of information available on the location of mineral sites in England. If there are any inaccuracies please contact Nature After Minerals and they will update the site details.

If you are in doubt about any of the species information presented on this website please check with the Freshwater Habitats Trust ( or the relevant partner organisation. Equally, if you notice any errors in the information given on this website, please contact Freshwater Habitats Trust.