We will work together with partners in Oklahoma, including the Oklahoma Department of Wildlife Conservation and the Oklahoma Biological Survey, University of Oklahoma, to create a new, higher resolution spatial database of the current extent and distribution of ecological systems and finer resolution mapping sub-systems (current vegetation) of Oklahoma. The current focus (Phase 1 of a possible 2-phase project) will create a finished product for eastern portions of the state, including the Cross Timbers, Arkansas Valley, Ozark Highlands, Central Great Plains, Boston Mountains, East Texas Plains, and most of the Flint Hills ecoregions.