Fig. 6. Results from the MARXAN scenario showing possible mitigation-needs solutions for the Pleasant Grove area. In this scenario, all public lands and lands within the levee system are considered to be conservation areas. The darker-brown parcels are those selected often by MARXAN as potentially meeting Caltrans mitigation needs. A sample “best” MARXAN solution (red parcels meet mitigation obligations with a low cost) is shown, with two aerial imagery insets (NAIP 1-m resolution, USDA 2005). The top inset shows a selected rice field parcel that could potentially serve as T. gigas habitat whereas the lower inset shows five adjacent selected parcels that combine to form a portion of a grassland corridor (running east–west). These grassland parcels also potentially harbor vernal pools.