A Rocha Portugal Observatory Report 2009-2010

Appendix 3.
Table 1: Selected data for comparison between the surveys in 1991, 2004 and 2009
1991 (11 transects) 2004 (11 transects) 2009 (4 transects)
June July August June July August June July August
Common name 8 15 22 29 6 13 20 27 3 10 17 8 15 22 29 6 13 20 27 3 10 17 8* 15 22 29 6 13 20 27 3 10 17
Swallowtail 12 10 1 4 4 4 1 1 4 2 * 3 1 1 1 2 1 3 1
Southern (Scarce) Swallowtail * 1 * 1 2 * * * 1 1
Large White 25 18 19 7 10 12 5 4 3 3 3 13 2 3 1
Small White 7 6 3 * * * 1 * * 23 26 13 18 5 1 3 4 5 2 1
Bath White 1 * * * * * 1 * * * 4 2 2
Green-striped White 1 1
Clouded Yellow 13 9 14 1 2 * 2 1 * 4 3 4 2 3 3 8
Brimstone 2 1
Cleopatra 8 2 * * 1 1 2 4 1 2 1 1
Blue-spot Hairstreak 1 * 3 2 1
Small Copper * 2 2 1 1 1 1 2 1 * 1 3 4 2 2 2 1 1 2 3 1 1 1
Holly Blue 1 1 1 1
Long-tailed Blue 1 * * 1 * * 1 1 1 2 1
Brown Argus * 1 1 * 2 5 3 * 3 2 1 1 4 3 5 1 2 3 2 1 9 3 5 4 2 2 2 1
Common Blue 11 19 11 4 7 11 15 16 11 9 7 9 7 7 14 4 3 11 3 6 4 4 5 7 1 1 1
Painted Lady 2 3 * * * * 3 1 1 1 1 3
Red Admiral 1 *
Meadow Brown 64 45 12 2 2 1 1 3 * 3 5 37 25 2 2 2 2 2 3 2 5 2 1 1 1
Southern Gatekeeper 21 28 28 15 5 6 6 4 4 4 4 21 9 10 4 21 21 18 21 21 16 9 17 27 38 30 29 28 12 14 27 21 16
Small Heath 1 1 1 1 2 * * 4 1 1 3 1 1
Speckled Wood 3 3 1 * * * * * * * * 5 6 15 6 3 4 2 1
Wall Brown 5 4 3 * 1 1 1 5 2 1 * 2 2 1 1 1
Monarch 1 1
Sage Skipper 2 1 4 9 16 19 10 2 1 4 4 2 2 1 3 1 1 4 2 2 2 2
Mallow Skipper 1 2 3 1 * * * * * 2 1 1 1 1 1 2
Lulworth Skipper 10 10 10 4 2 3 4 2 19 26 12 1 2
Essex Skipper 30 28 2 7 1
Number of individuals 212 195 114 39 40 49 46 54 49 36 23 137 86 54 49 54 31 36 32 39 28 15 66 107 70 53 46 31 20 20 37 27 27
Number of species 15 21 16 9 14 12 12 11 9 10 7 16 13 13 9 13 7 7 5 7 6 3 13 14 11 11 11 3 5 5 7 6 8
(*) – the week of 8 th June 2009 includes observations from 3 transects (instead of 4)