Main Atlases are commercially published books, presenting the
current state of knowledge for well recorded groups as the culmination
of a recording scheme. Recent Main Atlases include text information
about the species, as well as other supporting material such
as analyses of trends.
BRC also publishes Provisional Atlases,
which give recorders an indication of progress and illustrate
early results. A facility to present early results is also
available on the NBN Gateway. Provisional Atlases have become increasingly
- indeed less provisional - for example the Hoverfly Atlas,
which provides charts of flight-period as well as text, and the
of Aquatic Bugs, which has biological information and identification
aids for some of the animals.
BRC's Provisional Atlases can
be purchased from the Centre for Ecology and Hydrology.