Butterfly Conservation
Hertfordshire and Middlesex Decad (10km square) Mapping Progress 2005-2009
TQ09
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TQ09 ~ Click on image for detailed map |
Decad co-ordinator: Ann Piper (01923 770220)
Link sections on this page . . .
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 | Table One ~ Key Tetrads to be visited |
| Table Two ~ Species richness map |
| Table Three ~ Target species |
Table One ~ Key tetrads to be visited
Table
One lists tetrads that have either had no visits or where coverage is still poor. Please try to visit these in 2009. If you can help please contact the decad co-ordinator for TQ09 ~ Ann Piper
2km squares TQ0090, TQ0092, TQ0094, TQ0096 & TQ0098 are part squares shared with Upper Thames Branch - please send all Buckinghamshire records to the Upper Thames Branch
| Tetrad (2km square) | Centered on | Coverage |
| TQ0092 | Near Newland Park/Hornhill Court | all season visits required - priority square |
| TQ0094 | The Swillet | all season visits required |
| TQ0096 | Chorleywood West | all season visits required - priority square |
| TQ0294 | Heronsgate/Chorleywood Bottom | all season visits required |
| TQ0296 | Chorleywood Common | Large Skipper, Small Tortoiseshell |
| TQ0298 | Sarratt Bottom/Church End | all season visits required |
| TQ0490 | Harefield | all season visits required |
| TQ0496 | Loudwater | all season visits required - priority square |
| TQ0498 | Sarratt/Micklefield Green | all season visits required |
| TQ0690 | Bishop's Wood Country Park (south side) | all season visits required - priority square look for White Admiral |
| TQ0694 | Croxley Green/Rickmansworth | summer visits required |
| TQ0696 | Little Green/Harrocks Wood | spring visits required |
| TQ0698 | M25/Buck's Hill Bottom/Chandler Cross | spring visits required |
| TQ0892 | Moor Park/Eastbury | all season visits required |
| TQ0894 | Croxley Centre/Holywell | Brimstone and Gatekeeper |
| TQ0896 | Cassiobury Park | all season visits required |
| TQ0898 | River Gade/NW Watford | all season visits required |
| TQ0090 | Chalfont St. Peter (not actually Herts!) | Records wanted by Upper Thames Branch |
Table Two ~ Species Richness Grid
Table Two is a 5 x 5 grid of the tetrads (2km squares) in TQ09, and shows the species richness for each tetrad based on recording in 2005-2008. There are no transects in TQ09.
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Table Three ~ Target Species
Table Three indicates the distribution of species recorded in TQ09 and the 2km
squares that need to be visited for specific species. This table does not include any Buckinghamshire records.
1 = a record
| Species | 0090 | 0092 | 0094 | 0096 | 0098 | 0290 | 0292 | 0294 | 0296 | 0298 | 0490 | 0492 | 0494 | 0496 | 0498 | 0690 | 0692 | 0694 | 0696 | 0698 | 0890 | 0892 | 0894 | 0896 | 0898 | Total |
| Brimstone | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 | |||||||||||||||||
| Brown Argus | 0 | |||||||||||||||||||||||||
| Clouded Yellow | 1 | 1 | 1 | 1 | 4 | |||||||||||||||||||||
| Comma | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 14 | |||||||||||
| Common Blue | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 | |||||||||||||||||
| Essex Skipper | 1 | 1 | 1 | 3 | ||||||||||||||||||||||
| Gatekeeper | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 14 | |||||||||||
| Green-veined White | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 15 | ||||||||||
| Holly Blue | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 16 | |||||||||
| Large Skipper | 1 | 1 | 1 | 1 | 4 | |||||||||||||||||||||
| Large White | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 18 | |||||||
| Marbled White | 1 | 1 | 1 | 1 | 4 | |||||||||||||||||||||
| Meadow Brown | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 19 | ||||||
| Orange Tip | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 16 | |||||||||
| Painted Lady | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 | |||||||||||||||||
| Peacock | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 21 | ||||
| Purple Emperor | 1 | 1 | 2 | |||||||||||||||||||||||
| Purple Hairstreak | 1 | 1 | 1 | 1 | 1 | 5 | ||||||||||||||||||||
| Red Admiral | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 18 | |||||||
| Ringlet | 1 | 1 | 1 | 1 | 1 | 1 | 6 | |||||||||||||||||||
| Silver-washed Fritillary | 1 | 1 | 2 | |||||||||||||||||||||||
| Small Copper | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 11 | ||||||||||||||
| Small Heath | 1 | 1 | 1 | 3 | ||||||||||||||||||||||
| Small Skipper | 1 | 1 | 1 | 1 | 4 | |||||||||||||||||||||
| Small White | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 12 | |||||||||||||
| Small Tortoiseshell | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 12 | |||||||||||||
| Small/Essex Skipper | - | |||||||||||||||||||||||||
| Speckled Wood | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 16 | |||||||||
| White Admiral | 1 | 1 | 1 | 3 | ||||||||||||||||||||||
| White-letter Hairstreak | 1 | 1 | 1 | 3 | ||||||||||||||||||||||
| Total | 5 | 7 | 3 | 6 | 13 | 23 | 11 | 17 | 11 | 7 | 16 | 17 | 5 | 7 | 6 | 11 | 13 | 14 | 11 | 18 | 8 | 17 | 10 | 12 |
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