Hampshire 10km distribution maps
Last updated by John Norton, 1 February 2023
These maps show the distribution of bryophyte taxa recorded in Hampshire (VC11 & 12), plotted at 10km square (hectad) resolution. The maps are derived from records in the BBS/BRC database (bryophyte data for Great Britain and Ireland from the British Bryological Society held by BRC, compiled October 2022) and those recently submitted to the recorders (up to end December 2022). The map does not include many John Norton records (2020 onwards, mostly for VC11) which are still to be entered, though most of those from organised meetings are included. Names follow the 2021 checklist and some more recent taxonomic changes. Taxa have mostly been grouped at the species level, but some well defined subspecies and varieties have been mapped separately and the older, species-level records excluded, so that gaps in recording of the subspecies can be seen. Please contact John Norton if you notice any errors or need help with submitting records. See this page for a table of name changes affecting Hampshire and Isle of Wight taxa.
The coloured shading on the maps shows the date class in which the taxon was most recently recorded in each hectad. The first three date classes follow those used in the 2014 atlas, except that the first class (grey shade) indicates records made before 1970 rather than before 1950 (1970 is now the cut-off date for vice-county records becoming bracketed in the census catalogue). Records added after the publication of the atlas, i.e. from 2014 onwards, are indicated by the yellow shade. A change has been made with respect to maps shown here previously in that a few records recorded for the date span 1950 to 1991 have been mapped for 1991, rather than 1950, moving them into a more recent date class. The brown shading on the base map shows the New Forest SSSI.
I would like to thank all the people who have sent in records and Oli Pescott for his assistance in supplying the datasets on behalf of the Biological Records Centre and the British Bryological Society. The BBS atlas 2014 and post-atlas datasets are on the NBN Atlas but newer records may not have been uploaded. The maps were generated from QGIS using the Tom.bio plugin developed for the Field Studies Council.
The map below shows the total number of taxa recorded in each 10km square for the two Hampshire vice-counties (current total taxa = 509):