1. Department of Wetland Ecology Estación Biológica de Doñana-CSIC Sevilla Spain
2. Instituto Universitario de Investigación Marina (INMAR) Campus de Excelencia Internacional/Global del Mar (CEI·MAR) Universidad de Cádiz Puerto Real (Cádiz) Spain
3. Theoretical and Computational Ecology Institute for Biodiversity and Ecosystem Dynamics (IBED) University of Amsterdam Amsterdam The Netherlands
4. British Trust for Ornithology Thetford, Norfolk U.K.
5. INBO – Research Institute for Nature and Forestry Brussels Belgium
6. COS Department Netherlands Institute for Sea Research, Texel & Utrecht University Texel The Netherlands