Response of plant species richness and primary productivity in shrublands along a north-south gradient in Europe to seven years of experimental warming and drought: reductions in primary productivity in the heat and drought year of 2003 - Peñuelas, Josep (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia) ; Prieto, Patricia (Centre de Recerca Ecològica i d'Aplicacions Forestals) ; Beier, Claus (RISØ National Laboratory) ; Cessaraccio, Carla (National Research Council of Italy. Institute of Biometeorology) ; De Angelis, Paolo (University of Tuscia. Department of Forest Environment and Resources) ; de Dato, Giovanbattista (University of Tuscia. Department of Forest Environment and Resources) ; Emmett, Bridget A. (Centre for Ecology and Hydrology-Bangor) ; Estiarte, Marc (Centre de Recerca Ecològica i d'Aplicacions Forestals) ; Garadnai, János (Hungarian Academy of Sciences. Institute of Ecology and Botany) ; Gorissen, Antonie (Plant Research International) ; Lang, Edit Kovacs (Hungarian Academy of Sciences. Institute of Ecology and Botany) ; Kröel-Dulay, György (Hungarian Academy of Sciences. Institute of Ecology and Botany) ; Llorens, Laura (Centre de Recerca Ecològica i d'Aplicacions Forestals) ; Pellizaro, Grazia (National Research Council of Italy. Institute of Biometeorology) ; Riis-Nielsen, Torben (University of Copenhagen. University of Copenhagen) ; Schmidt, Inger K. (University of Copenhagen. University of Copenhagen) ; Sirca, Constantino (Univeristy of Sassari. Department of Economics and Tree Crops) ; Sowerby, Alwyn (Centre for Ecology and Hydrology-Bangor) ; Spano, Donatella (Univeristy of Sassari. Department of Economics and Tree Crops) ; Tietema, Albert (Universiteit van Amsterdam. Center for Geo-ecological Research)