The North American landscape has changed considerably since European settlement, and ecological restorationists are responding to these changes by attempting to restore “natural” areas to their presettlement conditions. Through participant observation, interviews, and document analysis, this work details the physical and conceptual reconstruction of the oak savanna ecosystem. The construction of the “oak savanna” is shown to be more than the creation of a new classification of nature; it is the remaking of a natural community in situ. The “creation story” (...) of the oak savanna is told through the examination of the contested creations of the scientific claim, the expertise to make such a claim, and of nature itself. Finally, the implications of this research for environmental science and the place of the constructivist sociologist are discussed. (shrink)