Commercial and sustainable extraction of non-timber forest products: towards a policy and management oriented research strategy

coeur de palmier commercialisation cosecha durabilité ecología forestal economic situation entorno socioeconómico environmental impact assessment environnement socioéconomique evaluación del impacto ambiental forest ecology forest resources fruits à coque frutos secos harvesting investigación marketing mercadeo nonwood forest products nuts palm hearts palmitos produit forestier non ligneux recherche recursos forestales research resinas resins ressource forestière récolte résine situación económica situation économique socioeconomic environment sostenibilidad sustainability écologie forestière