I wrote this up last week, but neglected to post it on the flog. Here is a detailed protocol for the 2011 recruitment searches. See Wagenius et al. 2011* for a description of the seedling recruitment study.
*Wagenius, S., A.B. Dykstra, C.E. Ridley, and R.G. Shaw. 2011. Seedling recruitment in the long-lived perennial, Echinacea angustifolia: A 10-year experiment. Restoration Ecology.