The marsh rice rat (Oryzomys palustris) is a threatened species in Illinois. This semi-aquatic rodent is at the northern edge of its range in Illinois and was listed as a state threatened species due to loss of wetland habitats. However, the marsh rice rat has recently been found in wetlands associated with underground coal mining practices and reedgrass (Phragmites australis), which are prevalent throughout the southern portion of the state.
My objectives are to: 1) develop criteria designed for delisting marsh rice rats as a state-threatened species in Illinois, 2) assess occupancy and relative abundance of marsh rice rats across the range of suitable habitats in southern Illinois, and 3) evaluate the relationship of rice rat distribution and habitat occupancy to delisting criteria. To meet these objectives, I will conduct extensive trapping and vegetation sampling. The results of this study will provide the most comprehensive data set describing the status and distribution of the marsh rice rat in Illinois. |
