Journal of Insect Conservation

, Volume 19, Issue 2, pp 313–324 | Cite as

Comparison of trends in butterfly populations between monitoring schemes

  • D. B. RoyEmail author
  • E. F. Ploquin
  • Z. Randle
  • K. Risely
  • M. S. Botham
  • I. Middlebrook
  • D. Noble
  • K. Cruickshanks
  • S. N. Freeman
  • T. M. Brereton


Butterflies are an important indicator of the impacts of environmental change. Butterfly monitoring schemes (BMS) have provided national and Europe-wide trends in their abundance and been widely used for research. Most schemes sample sites that are self-selected by contributors and therefore tend to cover locations that are rich in butterflies. To provide a more representative assessment of butterfly populations, the wider countryside butterfly survey (WCBS) was developed with a stratified-random sample of survey sites across the UK. We compare butterfly trends from the WCBS locations against those measured from traditional butterfly transects which are typically located in areas of good quality semi-natural habitats. Across the 26 species analysed, there was a significant positive relationship between trends measured from the two schemes between 2009 and 2013, the period when both schemes were operating fully. There was a tendency (17 out of 26 species analysed) for these changes to be greater within WCBS compared to traditional BMS transects, although this effect was not consistent across comparisons between pairs of consecutive years. When assessing these individual year-to-year changes, there was however a significant correlation between the two schemes in all cases. Over relatively short time periods, weather patterns are likely to dominate butterfly population fluctuations and lead to comparable trends across monitoring schemes. Over longer time periods, differences in land management may affect habitat condition differently for protected areas versus the wider countryside and it is therefore important to maintain comprehensive butterfly monitoring programmes to detect and interpret such effects.


Butterfly monitoring scheme Lepidoptera Citizen science Abundance trends Biodiversity indicators 



The UKBMS is operated by the Centre for Ecology and Hydrology, Butterfly Conservation and the British Trust for Ornithology and funded by a multi-agency consortium including the Countryside Council for Wales, Defra, the Joint Nature Conservation Committee, Forestry Commission, Natural England, the Natural Environment Research Council, and Scottish Natural Heritage. The UKBMS is indebted to all volunteers who contribute data to the scheme. We thank two anonymous referees for helpful comments on this manuscript.


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • D. B. Roy
    • 1
    Email author
  • E. F. Ploquin
    • 1
  • Z. Randle
    • 2
  • K. Risely
    • 3
  • M. S. Botham
    • 1
  • I. Middlebrook
    • 2
  • D. Noble
    • 3
  • K. Cruickshanks
    • 4
  • S. N. Freeman
    • 1
  • T. M. Brereton
    • 2
  1. 1.NERC Centre for Ecology and HydrologyWallingfordUK
  2. 2.Butterfly ConservationWarehamUK
  3. 3.British Trust for OrnithologyThetfordUK
  4. 4.Footprint EcologyWarehamUK

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