Affiliation: | Countryside and Community Research Institute, Cheltenham, Gloucestershire, UK;, Institute of Grassland and Environmental Research, North Wyke, Okehampton, Devon, UK;, Unite de Recherche sur les Herbivores, Institiut National de la Recherche Agronomique, Theix, Saint-Genes-Champanelle, France;, Department of Crop Science, Georg-August-Universitaet, Göttingen, Germany;, ERSA Friuli Venezia Giulia, Pordenone, Italy;, and De Vlinderstichting/Dutch Butterfly Conservation, Wageningen, The Netherlands |