A Model of Human- Environment Interactions Historically, environmental and natural resource management was viewed as separable from so- cial and economic concerns. The model pro- posed by the charette sets as its goal the complete inte- gration of ecological and societal components so that eco- system management can be fully effective and success- ful. This is founded on the premise that humans are an integral part of ecosystems, that people both shape and are shaped by natural systems, and that society is nur- tured by the maintenance of sustainable ecosystems. The charette examined human-environment interactions, including economic, legal, social, and demographic issues, and characterized the connections between hu- mans and natural systems as interdependent. Societal systems affect the environment through land use, pollu- tion, competition for resources, and other ecosystem uses, and the environment provides a diversity of essential support to societal systems and the quality of human life. The charette also considered issues of governance, re- source management, and societal and cultural values. The importance of a sustainable ecosystem to society's basic needs, to the quality of human life, and to the in- tangible but powerful human sense of environmental ethics was seen as a driving force in society's efforts to sustain the Everglades and other irreplaceable natural systems.