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United Kingdom Butterfly Monitoring Scheme annual report 2009

By Marc Botham, TM Brereton, I Middlebrook, KL Cruickshanks, A Zannese and David Roy

Abstract

HIGHLIGHTS\ud • A major milestone was made as the number of sites monitored\ud in 2009 exceeded a thousand, whilst trends were assessed\ud for 53 of the 59 regularly occurring UK species.\ud • Following two of the poorest years on record for butterflies in\ud the UK, most species made some recovery in what turned out\ud to be a mixed year, still ranking below average (23) in the 34-\ud year series.\ud • The year ranked as the second best on record for Painted\ud Lady migration with a huge influx in May/June.\ud • Many expanding species continued to do well, whilst five\ud species produced their highest index of the series – Comma,\ud Green-veined White, Ringlet, Speckled Wood and the habitat\ud specialist, Large Heath.\ud • However, despite a warm, sunny start to the year, much of the\ud butterfly season in July and August was once again\ud characterised by wet weather having an adverse effect on a\ud number of species.\ud • Four species had their worst year with continued declines for\ud some of our most threatened species – Duke of Burgundy,\ud Heath Fritillary, Lulworth Skipper and Wood White.\ud • Other threatened species, as well as some of our commoner\ud species, still produced low indices despite the slight recovery\ud from 2008.\ud • For 47 of the 53 species assessed (89%), the mean flight date\ud was advanced compared with the series average, and for the\ud majority of species which fared better than in 2008, the mean\ud flight date was advanced by 1-2 weeks

Topics: Ecology and Environment
Publisher: JRS
Year: 2010
OAI identifier: oai:nora.nerc.ac.uk:15170

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