Deep roots. We think of #conservation as a relatively young scientific enterprise - it didn’t have an organized professional society until the mid 1980s. But George Perkins Marsh wrote about the #anthroposcene in his 1864 book #man and #nature When he described humans as a “new geographical force.” Ray Dasmann, over 50 years ago, was talking about #socioecologicalsystems ”environmental conservation based on ecological knowledge and social understanding is required.” Know your #history !