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M40 Compensation Area
The map shows you the route that this butterfly transect follows.
| County: | Buckinghamshire (England) |
| Gridref: | SP629102 |
| Year established: | 1991 |
| Number of sections: | |
| Altitude (m): | Unknown |
| Length (m): | 1620 |
| Width (m): | 5 |
| Broad habitat: | Dry semi/unimproved (flower rich) neutral grassland |
Species list...
The following species have been recorded on this site:
| Species | Status | Colonised/extinct | Asynchronous | Mean count | ||
| Small Tortoiseshell | Stable | 22 | more | |||
| Orange Tip | Stable | 18 | more | |||
| Ringlet | Increasing | 180 | more | |||
| Silver-washed Fritillary | ? | 0 | .070 | more | ||
| Brown Argus | Stable | 1 | .9 | more | ||
| Holly Blue | ? | 0 | .58 | more | ||
| Small Heath | Decreasing | 4 | .1 | more | ||
| Clouded Yellow | ? | 0 | .45 | more | ||
| Brimstone | Stable | 7 | .4 | more | ||
| White Admiral | ? | 0 | .20 | more | ||
| Small Copper | Stable | 6 | .5 | more | ||
| Meadow Brown | Stable | * | 220 | more | ||
| Gatekeeper/Hedge Brown | Increasing | * | 240 | more | ||
| Marbled White | Increasing | 48 | more | |||
| Peacock | Decreasing | 51 | more | |||
| Large Skipper | Stable | 73 | more | |||
| Speckled Wood | Stable | 30 | more | |||
| Large White | Stable | 39 | more | |||
| Green-veined White | Stable | 56 | more | |||
| Small White | Increasing | 58 | more | |||
| Comma | Stable | 6 | .3 | more | ||
| Common Blue | Stable | 69 | more | |||
| Black Hairstreak | ? | 0 | .26 | more | ||
| Brown Hairstreak | ? | 0 | .30 | more | ||
| Purple Hairstreak | ? | 0 | .14 | more | ||
| Small Skipper | Stable | 190 | more | |||
| Red Admiral | Stable | 2 | .6 | more | ||
| Painted Lady | Stable | 2 | .0 | 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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