affiliation not provided to SSRN, affiliation not provided to SSRN, National Observatory of Athens, Universidad de Alcalá, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, INNOV-ACTS LIMITED, affiliation not provided to SSRN, affiliation not provided to SSRN, Forest Science and Technology Centre of Catalonia, affiliation not provided to SSRN, International Institute of Applied Systems Analysis (IIASA), University of Geneva, affiliation not provided to SSRN, Forest Science and Technology Centre of Catalonia, National Observatory of Athens and affiliation not provided to SSRN