Acknowledgments
We thank the volunteers collecting butterfly data and the funders of the
schemes for the obtaining the data required for this study. The UK
Butterfly Monitoring Scheme is organized and funded by Butterfly
Conservation, the Centre for Ecology and Hydrology, British Trust for
Ornithology, and the Joint Nature Conservation Committee. The Catalan
BMS is funded by the Catalan Government, the Barcelona Provincial
Council and other local partners. The Catalan BMS also incorporates the
Andorra BMS that is run by CENMA and funded by Govern d’Andorra. The
Finnish BMS is organized and funded by the Finnish Environment Institute
(SYKE) and the Finnish Ministry of Environment.