Appendix F. Multiple regressions of rodent densities in grass- and shrub-dominated vegetation against annual and seasonal precipitation from current and previous years between 1989 and 2004. BáezSelene L. CollinsScott LightfootDavid KoontzTerri L. 2016 Multiple regressions of rodent densities in grass- and shrub-dominated vegetation against annual and seasonal precipitation from current and previous years between 1989 and 2004.