Over the past 35 yrs I’ve devoted to the study of the ecology under the ecosystem approach. I've conducted over 40 scientific researches in wetland conservation, and trying to mitigate the environmental impacts produced by exotic species and by overexploiting biotic resources in natural protected areas. I introduce myself in the field of the environmental law and ecological economics 25 yrs ago. it is not possible biological conservation without better laws.I currently have experience in ecology and law, but with a tendency towards environmental law and ecological law, as well as the management of protected natural areas.