Butterfly Atlases

A guide to Dorset butterfly populations over time

Our Butterfly Atlases are vitally important because they show the location of species and, over time, measure distribution changes and the possible effects of climate change. This gives us the information we need to help various species in appropriate ways.

Maps showing where the Small pearl-bordered Fritillary used to be found, and where it is found now

Maps showing where Small Pearl-bordered Fritillary was found in the period 1970-1994 (left) compared to 2010-2014 (right).

The species pages listed below give a major analysis of both long and short term data for Dorset's butterflies from 1970 to 2014. Details of previous atlases are listed on this page. See also:

Species list

Click on individual species to see the analysis: