1 National Institute for Agriculture and Food Research and Technology (INIA), Forest Research Centre (CIFOR), Department of Silviculture and Forest Management, Ctra. de la Coruña, km. 7.5, 28040 Madrid, Spain; Complutense Institute for International Studies (ICEI), Complutense University of Madrid, Finca Mas Ferré, Edif. A. Campus de Somosaguas, 28223 Pozuelo de Alarcón, Spain; iuFOR, Sustainable Forest Management Research Institute, University of Valladolid & INIA, Spain. Electronic address: solino.mario@inia.es.
2 National Institute for Agriculture and Food Research and Technology (INIA), Forest Research Centre (CIFOR), Department of Silviculture and Forest Management, Ctra. de la Coruña, km. 7.5, 28040 Madrid, Spain.
3 National Institute for Agriculture and Food Research and Technology (INIA), Forest Research Centre (CIFOR), Department of Forest Ecology and Genetics, Ctra. de la Coruña, km. 7.5, 28040 Madrid, Spain; iuFOR, Sustainable Forest Management Research Institute, University of Valladolid & INIA, Spain.
4 National Institute for Agriculture and Food Research and Technology (INIA), Forest Research Centre (CIFOR), Department of Forest Ecology and Genetics, Ctra. de la Coruña, km. 7.5, 28040 Madrid, Spain.
5 Department of Biogeography and Global Change, National Museum of Natural Sciences-Spanish National Research Council (MNCN-CSIC), c/Serrano 115 bis, 28006 Madrid, Spain.
6 National Institute for Agriculture and Food Research and Technology (INIA), Forest Research Centre (CIFOR), Department of Silviculture and Forest Management, Ctra. de la Coruña, km. 7.5, 28040 Madrid, Spain; iuFOR, Sustainable Forest Management Research Institute, University of Valladolid & INIA, Spain.
7 Department of Public Economics, University of Zaragoza, C/ Gran Vía 2, 50005 Zaragoza, Spain.
8 iuFOR, Sustainable Forest Management Research Institute, University of Valladolid & INIA, Spain.