County Wildife Site Criteria for Cornwall Appendices

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LOWLAND CALCAREOUS GRASSLAND PHTGeneral DescriptionLowland calcareous grasslands are developed on shallow lime-rich soils generally overlying limestonerocks, including chalk. These grasslands are now largely found on distinct topographic features suchas escarpments or dry valley slopes and sometimes on ancient earthworks in landscapes stronglyinfluenced by the underlying limestone geology.More rarely, remnant examples occur on flatter topography such as in Breckland and on SalisburyPlain. They are typically managed as components of pastoral or mixed farming systems, supportingsheep, cattle or sometimes horses; a few examples are cut for hay.National ContextAs defined here, lowland calcareous grassland only occurs in England and Wales. Current estimatesput the amount of lowland calcareous grassland remaining in the United Kingdom around 33 000 to41 000 ha with less than 1000 ha of this in Wales. The bulk of the resource is found on chalk (25 000to 32 000 ha), with major concentrations in Wiltshire, Dorset and the South Downs.The cover of lowland calcareous grassland has suffered a sharp decline in extent over the last 50years. There are no comprehensive figures, but a sample of chalk sites in England surveyed in 1966and 1980 showed a 20% loss in that period and an assessment of chalk grassland in Dorset found thatover 50% had been lost between the mid-1950s and the early 1990s.Area of PHT in Cornwall (ha): 1350.4% National TotalNumber of polygons: 21The habitat is: RareDistribution by Administrative DistrictDistrict P K CK R CN NC ΣNumber 1 0 14 3 0 3 21Area (ha) 4 0 122 6 0 3 135Distribution by Natural AreaDistrict Pe Lz CKG BM Cu ΣNumber 0 0 21 0 0 21Area (ha) 0 0 135 0 0 135For this habitat we will take all areasAppendix 4 - Information Relating to Priority Habitat TypesCounty Wildlife Sites Criteria
LOWLAND CALCAREOUS GRASSLAND: SourcesDataset Description Owner Role in Inventory Access NotesAerial photos ofCCCHeld at CCCCornwallCounty WildlifeSite filesCWT ReservefilesDune Grasslandand Grasslandlandcover on GISDigital photographstaken in 2000,together with printstaken in 1995/6Reports held in paperfiles. (1980-1988)ERCCISCan be used toidentify up-to-dateboundaries where thetide allows.Useful as a back-up tothe Sand Dune Surveyof CornwallManagement Reports CWT Likely to providehabitat details to NVClevel in a smallnumber of casesMaps of these habitatsdrawn from acombination ofreferences and API(1996)ERCCISShould be a usefulbasis for the PHT.EN local teamSSSI filesPaper information onSSSIsEN Unlikely to holdsignificant informationNT site survey Reports on surveys of NT Likely to providereportsNT land. (1979-2001)habitat details to NVClevel in a smallnumber of cases.Phase 1 maps Paper information EN Already part of theGIS landcover.Sand Dune Survey A map of all sand ENof Cornwall dunes in the countyThe main source ofsand dune IDthroughout thecounty.ERCCISCWTERCCISENERCCISERCCISERCCISGood qualityinformationGood qualityinformationPoor qualityHigh qualityinformation, close toNVCAppendix 4 - Information Relating to Priority Habitat TypesCounty Wildlife Sites Criteria
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HeadingCounty Wildife SiteCriteria
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PENWITHP/K 1P/K 2P3Hayle Estuary an
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K17K18K19K20K21K22K23K24K25K26K/P 2
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R5R6R7R8R9R10R11R12R13R 15.2R/CK 16
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CN/NC 8CN/NC 9CN 10CN 11CN 12CN 13C
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NC/CN 7 NNC/CN 7 SNC/CN 8NC/CN 9NC
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Appendix 2The Selection of Local Si
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However, it is not a significant co
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Where any area has less than ½ of
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West Looe to Watergatehttp://cwtdev
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Appendix 4Information Relating to P
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Upland flushes, fens and swamps PHT
Page 26 and 27: COASTAL SALTMARSH: SourcesDataset D
Page 28 and 29: COASTAL SAND DUNES: SourcesDataset
Page 30 and 31: COASTAL VEGETATED SHINGLE: SourcesD
Page 32 and 33: ESTUARINE ROCKY HABITATS PHTGeneral
Page 34 and 35: INTERTIDAL MUDFLATS PHTGeneral Desc
Page 36 and 37: MAERL BEDS PHTGeneral DescriptionMa
Page 38 and 39: MUD HABITATS IN DEEP WATER PHTGener
Page 40 and 41: Sabellaria alveolata REEFS: Sources
Page 42 and 43: SALINE LAGOONS: SourcesDataset Desc
Page 44 and 45: SEAGRASS BEDS: SourcesDataset Descr
Page 46 and 47: SUBTIDAL SANDS AND GRAVELS PHTGener
Page 48 and 49: LOWLAND MIXED DECIDUOUS WOODLAND PH
Page 50 and 51: LOWLAND MIXED DECIDUOUS WOODLAND: C
Page 52 and 53: TRADITIONAL ORCHARDS PHTGeneral Des
Page 54 and 55: UPLAND MIXED ASHWOODS PHTGeneral De
Page 56 and 57: UPLAND MIXED ASHWOODS: CommentsData
Page 58 and 59: UPLAND OAKWOOD PHTGeneral Descripti
Page 60 and 61: UPLAND OAKWOOD: CommentsData Source
Page 62 and 63: WET WOODLAND PHTGeneral Description
Page 64 and 65: WET WOODLAND: CommentsData SourcesA
Page 66 and 67: WOOD-PASTURE AND PARKLAND PHTGenera
Page 68 and 69: The National DefinitionGoodReliabil
Page 70 and 71: ARABLE FIELD MARGINS PHTGeneral Des
Page 72 and 73: COASTAL AND FLOODPLAIN GRAZING MARS
Page 74 and 75: LOWLAND MEADOWS: SourcesDataset Des
Page 78 and 79: LOWLAND CALCAREOUS GRASSLAND: Comme
Page 80 and 81: LOWLAND DRY ACID GRASSLAND: Sources
Page 82 and 83: LOWLAND HEATHLAND PHTGeneral Descri
Page 84 and 85: LOWLAND HEATHLAND: CommentsData Sou
Page 86 and 87: UPLAND HEATHLAND: SourcesDataset De
Page 88 and 89: LOWLAND FENS PHTGeneral Description
Page 90 and 91: PURPLE MOOR GRASS AND RUSH PASTURES
Page 92 and 93: PURPLE MOOR GRASS AND RUSH PASTURES
Page 94 and 95: REEDBEDS: SourcesDataset Descriptio
Page 96 and 97: UPLAND FLUSHES, FENS AND SWAMPS: po
Page 98 and 99: BLANKET BOG: SourcesDataset Descrip
Page 100 and 101: EUTROPHIC STANDING WATER PHTGeneral
Page 102 and 103: MESOTROPHIC LAKES PHTGeneral Descri
Page 104 and 105: OLIGOTROPHIC AND DYSTROPHIC LAKES P
Page 106 and 107: PONDS PHTGeneral DescriptionThis PH
Page 108 and 109: RIVERS PHTGeneral DescriptionThe Ri
Page 110 and 111: OPEN MOSAIC HABITATS ON PREVIOUSLY
Page 112 and 113: This appendix provides a more detai
Page 114 and 115: LOCAL ANCIENT WOODLANDSGeneral Desc
Page 116 and 117: LOCAL ANCIENT WOODLANDS: CommentsDa
Page 118 and 119: LOCAL MIXED ASHWOODS: SourcesDatase
Page 120 and 121: LOCAL PARKLANDSGeneral DescriptionT
Page 122 and 123: The National DefinitionGoodReliabil
Page 124 and 125: LOCAL BOUNDARIES: SourcesDataset De
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LOCAL FLOODPLAIN GRASSLANDS: Source
Page 128 and 129:
LOCAL LOWLAND MEADOWSGeneral Descri
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LOCAL LOWLAND MEADOWS: CommentsData
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UPLAND DRY ACID GRASSLAND: SourcesD
Page 134 and 135:
LOCAL PONDSGeneral DescriptionThe n
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Appendix 6Information Relating to S
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Monotropa hypopitysMuscari neglectu
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FRESHWATER ALGAE, FUNGI AND LICHENS
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BRYOPHYTESThese criteria are direct
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*Calliergon sarmentosum 50**Calypog
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Pottia commutata = Microbryum daval
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Moths:Acronicta psi Grey DaggerAcro
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BUTTERFLIESBAP species and butterfl
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DRAGONFLIES AND DAMSELFLIES (ODONAT
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FISHGainey, in CISFBR (2009), state
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Sites with significant Amphibian as
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Turdus torquatus torquatus Ring Ouz
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Table of Thresholds for wintering w
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Other MammalsCornwall BAP Priority
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Shirt, D.B. (Ed.) (1987) British Re
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Tick when Process CompleteProtocol
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Site Contraction/DeletionDetails of
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County Wildife Site Criteria for Cornwall Appendices

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