BSBI tetrad data for Ireland
The BSBI Maps Scheme (www.bsbimaps.org.uk) displays hectad and tetrad maps for Britain and Ireland. Note that these maps are a summary dataset only and have not been updated since 2010. More up to date maps are provided on the BSBI’s Distribution Database (http://bsbidb.org.uk/) for which users will need to register and be granted access.
Date range: Jan 1, 1600 - Jan 1, 2010
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