Habitat suitability models using autologistic regression for the rare Missouri bladder-pod (<i>Lesquerella filiformis</i>)
Three descriptive habitat suitability models were built for the federally threatened Missouri bladder-pod (Lesquerella filiformis), using three years of data (1997, 1998, and 2003). The study site, Bloody Hill Glade, is located on federal land and contains a permanent sampling grid. Autologistic regression models were built with spatially explicit, ground-truthed data; presence/absence of L. filiformis is the dependent variable and cover categories of habitat attributes are independent variables. Each selected model included a different set of habitat variables most important to describing likelihood of L. filiformis presence. However, pebble-clad [PEBBLE] and forb [FORB] microhabitats, and canopy cover of the invasive Juniperus virginiana [CEDAR], were consistent among all three models. Each model accurately predicts presence of L. filiformis in the other years of data collection. These models provided microhabitat-scale results that can be used by plant conservationists and managers, and prompted management recommendations as well as suggestions for future research.