County Wildife Site Criteria for Cornwall Appendices

Upland flushes, fens and swamps PHTBog BHTBlanket bog PHTStanding open water and canals BHTEutrophic standing water PHTMesotrophic lakes PHTOligotrophic and dystrophic lakes PHTPonds PHTRivers and streams BHTRivers PHTInland Rock BHTCalaminarian Grasslands PHTBuilt up Areas and Gardens BHTOpen mosaic habitats on previously developed land PHTEach PHT account opens with a general description and a statement which provides aNational overview. There follows a figure for the area of the habitat for the county, thatfigure as a percentage of the National total, the number of polygons which were drawn forthat area and a standard description of how the habitat should be described.Two tables follow within which the area and number of polygons is listed for eachAdministrative District and Natural Area. Within those tables the following abbreviationsare used:Acronyms used in the ‘Distribution’ tablesAdministrative DistrictNatural AreaP Penwith Pe PenwithK Kerrier Lz LizardCK Carrick CKG Cornwall Killas & GraniteR Restormel BM Bodmin MoorCN Caradon Cu CulmNC North CornwallThe final figure is the habitat threshold – that area which makes a block eligible to beconsidered as a County Wildlife Site. More details on the derivation of the threshold can befound in a separate document.After the initial figures there are two tables. The first, sources, gives details of what sourceswe considered using before we began the PHT mapping exercise. The second, comments,gives a succinct overview of the how successful the mapping process was considered to be.The PHT definitions are those used in the South West Pilot Project.Acronyms used in the ‘Sources’ tablesCCC Cornwall County CouncilCWT Cornwall Wildlife TrustERCCIS Environmental Records Centre for Cornwall and the Isles of ScillyENEnglish Nature (now Natural England)NTNational TrustOSOrdnance SurveyAppendix 4 - Information Relating to Priority Habitat TypesCounty Wildlife Sites Criteria