Lancashire & Cheshire distributions

CHANGES IN BUTTERFLY DISTRIBUTIONS IN LANCASHIRE AND CHESHIRE

 

Thanks to the co-operation of the Cheshire and Lancashire butterfly recorders, Barry Shaw and Laura Sivell, I have been able to produce maps showing all the available records for each species of butterfly in Watsonian vice-counties VC58, 58 and 60 for the periods 1940 to 1994 (very few records from the earlier years; the vast majority are from the late 1980s onwards), 1995 to 2000 and 2001 to 2007.

For the maps showing the distributions of each butterfly species, see the following links. On my earlier site, "Geocities", the maps could be made to appear three abreast; however on this one they can not and only two can be viewed side-by-side; I have tried to group them for the most convenient viewing. Under each species, the first three show all the records for the particular species in each of the three periods; the next three blocks of two rows show each of the periods alongside maps plotting the coverage, i.e. all known visits during the period, then on the next line green/red maps showing altitude and urban cover - both it is hoped in self-explanatory symbols; the altitude map is graded in bands on 0-100m (light blue-green), 100-200m, 200-300m, 300-400m, 400-500m and over 500m (deep orange-brown); the urban cover uses five symbols graded from green to dark red-brown depending on whether a 1km square has urban cover over none or virtually none of its area, a quarter, a half, three-quarters or the whole of its area. Finally for each species there are three pairs of maps, one for each period, which come up two abreast and show the records for that species against .

P.B.H. 10.10.2009 (the original site on "Geocities" was dated 25.11.2008)

Having pondered for long on what to treat as comprising "Lancashire" and"Cheshire", I decided to use the Watsonian vice-counties 58, 59 and 60 (Cheshire, South Lancashire and West Lancashire), but also to include records from those parts of VC57 (Derbyshire) and VC63 (South-west Yorkshire) which since 1974 have been regarded as being in"Greater Manchester", and those parts of VC63 and VC64(Mid-west Yorkshire) which since 1974 have been regarded as being in "Lancashire". I did at one point aim to include everywhere that by any possible permutation could be regarded as coming at any point in time under "Lancashire" or "Cheshire", which would have included the Furness, but was unable to obtain enough records from that part of VC69 to make mapping realistic, or to obtain a suitable base map which would include the whole of it. I must accordingly apologise to those residents of places such as Barrow, Grange or Arnside who still consider themselves to be in Lancashire (to my mind rightly) for not including them.

 

[ Small Skipper Thymelicus sylvestris ]

[ Large Skipper Ochlodes sylvanus ]

[ Dingy Skipper Erynnis tages ]

[ Grizzled Skipper Pyrgus malvae ]

[ Clouded Yellow Colias croceus ]

[ Brimstone Gonepteryx rhamni ]

[ Large White Pieris brassicae ]

[ Small White Pieris rapae ]

[ Green-veined White Pieris napi ]

[ Orange Tip Anthocharis cardamines ]

[ Green Hairstreak Callophrys rubi ]

[ Purple Hairstreak Neozephyrus quercus ]

[ White-letter Hairstreak Satyrium w-album ]

[ Small Copper Lycaena phlaeas ]

[ Long-tailed Blue Lampides boeticus ]

[ Silver-studded Blue Plebeius argus ]

[ Northern Brown Argus Aricia artaxerxes ]

[ Common Blue Polyommatus icarus ]

[ Holly Blue Celastrina argiolus ]

[ Duke of Burgundy Fritillary Hamearis lucina ]

[ White Admiral Limenitis camilla ]

[ Red Admiral Vanessa atalanta ]

[ Painted Lady Vanessa cardui ]

[ Small Tortoiseshell Aglais urticae ]

[ Camberwell Beauty Nymphalis antiopa ]

[ Peacock Inachis io ]

[ Comma Polygonia c-album ]

[ Small Pearl-bordered Fritillary Boloria selene ]

[ Pearl-bordered Fritillary Boloria euphrosyne ]

[ High Brown Fritillary Argynnis adippe ]

[ Dark Green Fritillary Argynnis aglaja ]

[ Silver-washed Fritillary Argynnis paphia ]

[ Speckled Wood Pararge aegeria ]

[ Wall Lasiommata megera ]

[ Scotch Argus Erebia aethiops ]

[ Marbled White Melanargia galathea ]

[ Grayling Hipparchia semele ]

[ Gatekeeper Pyronia tithonus ]

[ Meadow Brown Maniola jurtina ]

[ Small Heath Coenonympha pamphilus ]

[ Large Heath Coenonympha tullia ]

[ Ringlet Aphantopus hyperantus ]

COVERAGE AND OBSERVED SPECIES RICHNESS

The following maps are on a nine-point colour scale, the steps, going from light blue-green to deep orange-brown, being: (a) in the case of the coverage maps, 1 visit, 2 to 9 visits, 10 to 24 visits, 25 to 49 visits, 50 to 99 visits, 100 to 199 visits, 200 to 299 visits, 300 to 399 visits, and 400 or more visits, during the period; (b) in the case of the species-richness maps, 1 species, 2-4 species, 5-7 species, 8-10 species, 11-13 species, 14-16 species, 17-19 species, 20-22 species, and 22 or more species; (c) in the case of individual butterflies, 1 individual, 2-9 individuals, 10-49 individuals, 50-99 individual, 100-499 individuals, 500-999 individuals, 1,000-4,999 individuals, 5,000-9,999 indivduals, and 10,000 or more individuals.

PERIOD 1 (1940-1994), RECORDING COVERAGE AND OBSERVED SPECIES RICHNESS

PERIOD 2 (1995-2000), RECORDING COVERAGE AND OBSERVED SPECIES RICHNESS

PERIOD 3 (2001-2007), RECORDING COVERAGE AND OBSERVED SPECIES RICHNESS

 

 

Make a Free Website with Yola.