Dormice National dormouse monitoring scheme (PTES) 1995-2011. Unsmoothed index. As BBS time series. Time series are estimated monthly. The data for June are used following advice from PTES. Butterflies UK Butterfly Monitoring Scheme (BRC) 1976-2011. TRIM annual index. Indices are calculated for butterfly species that have been recorded from five or more sites per year. The wider countryside butterfly survey has only three counts during summer and requires twice as many monitored sites to achieve comparable precision to the 26-week butterfly monitoring scheme. 430 monitoring sites on average are required to achieve 80% power (5% significance level) for detecting a 25% decline in abundance over 10 years. Site x year Log-linear Poisson regression models in TRIM (Pannekoek and van Strien 1996) are used. For years where a transect site has not been recorded, the model imputes an estimated site index that allows for the general conditions of the year in question and how favourable the site is. Table 5: Assessment of robustness of monitoring schemes – Data quality = Red > Amber > Green Dataset Effort Survey design Field method Moths Rothamsted moth survey (1968-) 80 Consistent, Non-random Light trap Butterflies countryside butterfly survey (2007-) 750 Consistent, Random Transect UK butterfly monitoring scheme (1976-) 1000 Consistent, Non- random Transect Mammals National Dormouse Survey (1993-) 300 Consistent, Known sites Nest box search Breeding bird survey (1995-) 2400 Consistent, Random Transect National Bat monitoring scheme (1997-) 1300 Consistent, Random Various, field/ roost counts Birds Breeding bird survey (1995-) 3200 Consistent, Random Transect Common bird census (1970-2000) 300 Consistent, Non-random Territory mapping Seabird monitoring programme, (1986 -) seabird censuses (1969 ,85,00) Species specific Consistent, Non-random or Total Colony counts Wetland bird survey (1970-) 3000 Consistent, Non-random Site counts
Minoa murinata drab looper moths frequency of occurrence Y Y N N NA NA Noctua orbona lunar yellow underwing moths frequency of occurrence Y Y Y N NA NA Paracolax tristalis clay fan-foot moths frequency of occurrence Y N N N NA NA Parasemia plantaginis wood tiger moths frequency of occurrence N N N Y NA NA Pechipogo strigilata common fan-foot moths frequency of occurrence Y N N N NA NA Perizoma blandiata pretty pinion moths frequency of occurrence N N N Y NA NA Polia bombycina pale shining brown moths frequency of occurrence Y Y N N NA Y Rheumaptera hastata argent and sable moths frequency of occurrence Y Y Y Y NA NA Scotopteryx bipunctaria chalk carpet moths frequency of occurrence Y Y N N NA NA Shargacucullia lychnitis striped lychnis moths frequency of occurrence Y N N N NA NA Trichopteryx polycommata barred tooth-striped moths frequency of occurrence Y N Y N NA NA Trisateles emortualis olive crescent frequency of occurrence Y N N N NA NA Tyta luctuosa four-spotted moth moths frequency of occurrence Y N N N NA NA Xestia ashworthii Ashworth’s rustic moths frequency of occurrence N Y N N NA NA Xylena exsoleta frequency of occurrence N Y Y Y NA NA Aeshna isosceles Norfolk hawker other insects frequency of occurrence Y N N N NA NA Anasimyia transfuga a hoverfly other insects frequency of occurrence N N Y N NA NA Cheilosia chrysocoma a hoverfly other insects frequency of occurrence N N Y N NA NA Coenagrion mercuriale Southern damselfly insects frequency of occurrence Y Y N N NA NA Decticus verrucivorus wart-biter other insects frequency of occurrence Y N N N NA NA Metrioptera brachyptera bog bush-cricket other insects frequency of occurrence N N Y N NA NA Stethophyma grossum large marsh grasshopper other insects frequency of occurrence Y N N N NA NA