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Porton Dn.2 (Tower Hill Wood)
The map shows you the route that this butterfly transect follows.
| County: | Wiltshire (England) |
| Gridref: | SU240387 |
| Year established: | 1995 |
| Number of sections: | |
| Altitude (m): | Unknown |
| Length (m): | 2700 |
| Width (m): | Unknown |
| Broad habitat: | Mature mixed broadleaved and coniferous woodland |
Species list...
The following species have been recorded on this site:
| Species | Status | Colonised/extinct | Asynchronous | Mean count | ||
| Small Tortoiseshell | Stable | 3 | .1 | more | ||
| Orange Tip | Stable | 3 | .3 | more | ||
| Ringlet | Stable | 140 | more | |||
| Dark Green Fritillary | Stable | 460 | more | |||
| Pearl-bordered Fritillary | Stable | 4 | .6 | more | ||
| Silver-washed Fritillary | Increasing | 0 | .99 | more | ||
| Small Pearl-bordered Fritillary | ? | 0 | .080 | more | ||
| Brown Argus | Stable | 89 | more | |||
| Green Hairstreak | Stable | 35 | more | |||
| Holly Blue | Stable | 3 | .8 | more | ||
| Small Heath | Stable | 330 | more | |||
| Clouded Yellow | ? | 0 | .63 | more | ||
| Small Blue | Stable | 7 | .0 | more | ||
| Dingy Skipper | Stable | 55 | more | |||
| Marsh Fritillary | Stable | 5 | .6 | more | ||
| Brimstone | Stable | 100 | more | |||
| Duke of Burgundy Fritillary | Stable | 11 | more | |||
| Silver-spotted Skipper | Stable | 3 | .3 | more | ||
| Small Copper | Stable | 12 | more | |||
| Chalk-hill Blue | Stable | 1 | .7 | more | ||
| Meadow Brown | Stable | 2500 | more | |||
| Gatekeeper/Hedge Brown | Decreasing | 180 | more | |||
| Marbled White | Decreasing | 530 | more | |||
| Peacock | Stable | 30 | more | |||
| Large Skipper | Stable | 38 | more | |||
| Speckled Wood | Increasing | 52 | more | |||
| Wall Brown | ? | 0 | .080 | more | ||
| Large White | Stable | 45 | more | |||
| Green-veined White | Stable | 15 | more | |||
| Small White | Stable | 16 | more | |||
| Comma | Stable | 3 | .5 | more | ||
| Common Blue | Stable | 310 | more | |||
| Grizzled Skipper | Decreasing | 48 | more | |||
| Brown Hairstreak | ? | 0 | .45 | more | ||
| Small Skipper | Decreasing | 51 | more | |||
| Red Admiral | Stable | 4 | .3 | more | ||
| Painted Lady | ? | 1 | .1 | more | ||
This table shows the species that have been recorded on this site. Where sufficient data is available, trends in abundance are assessed and colonisation/extinction events are identified. Species are marked as 'asynchronous' when their trends on this site are markedly different from the national trend. Click on 'more' to see a plot of abundance through time for each species. See green question mark above for more details.
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