Churchyards and the Churchyard Survey
BLS members began to recognise the importance of churchyards as a lichen habitat in the 1970s. The variety of substrates and aspects can make for a rich diversity of lichen species, and this combined with the attractive locations and easy accessibility of churchyards has made them popular sites to survey for experts and novices alike.
The BLS Lowland Churchyard project was instigated in the early 1990s by the late Tom Chester. One of the initial aims of the project was to survey at least one churchyard in each of the Ordnance Survey’s 10km squares (hectads) covering lowland Britain, and this was achieved as a Millennium Project. The survey is still ongoing, recording more churchyards within the original area and also extending cover the south-west (now almost completed), Wales and the Welsh Borders, Northern England (almost complete), Scotland and Northern Ireland.
Churchyard recording can turn up some surprising finds, an unexpectedly rich churchyard, a rarity new to the area, or even the presence of a lichen once thought to be extinct (this has happened several times!). We now have some 450,000 records from 11,200 visits to 8,000 churchyards held in the BLS database. These records have given us a better knowledge of the distribution of the more common species, and they have enabled us to develop objective methods to assess the relative value of each churchyard for lichens. We now know which churchyards are most important for lichens, and have learnt much about the importance of conserving such places as long-term habitats
The environment of Britain is changing, in complex ways that vary from one area to another, so it is important that we continue this survey by recording new sites and by revisiting those that were last surveyed some time ago. Some have changed little since the 1980-90s or have increased in diversity as air quality has improved, but in others changing environental conditions have led to considerable losses from the lichen flora. The increasing shade from maturing trees, the modern practice of leaving parts of churchyards unmanaged as "wildlife" areas , and the increase in atmospheric nitrogen pollutants, ammonia and NOX, in some areas, are all factors in this. Resurvey of churchyards will provide valuable data on how widespread these issues are and their effects on different lichen species.
Further information on how to get involved and on churchyard lichen conservation can be found in the Churchyard pages on this website: