Lupinus oreganus in the BLM Roseburg District: Population monitoring and restoration

This document reports preliminary findings and summarizes methods used in monitoring the threatened species Lupinus oreganus in the BLM Roseburg District.  In 2015, we monitored L. oreganus populations by assessing foliar (leaf) cover (a measure of abundance), raceme count, and fruit production at six different sites in the Roseburg District.
Alarmingly, seed set and raceme count was down at all sites monitored in the Roseburg BLM District. This is consistent with populations in the Willamette Valley, where seed set and reproductive effort were significantly lower than previous years- and in many cases the lowest ever recorded. This is most likely due to the extremely dry and hot spring and summer temperatures experienced throughout the Pacific Northwest in 2015.  Despite low reproductive effort, foliar cover remained relatively stable at most sites compared to 2014 values.