Results from 2013 Vegetation Monitoring in Prairie and Old Field Habitats Following Shrub Removal at the North Chicago Wetland Mitigation Site, Lake County, Illinois

This report focuses on results from vegetation monitoring in terrestrial plant communities during 2013 and compares trends among reference prairie, transect prairie, and old field habitats. There are four main questions: 1. What are the site-level comparative trends in species composition, total richness, and floristic quality and,for old field and prairie habitats (combining reference prairie and transect prairie habitats),what are the changes in species composition and abundance? 2. Based on 2013 sample data, are there significant between-subjects differences (vegetation types) with regard to ground layer and shrub/sapling parameters (e.g., composition, species richness, diversity, and cover-see Methods for full list and parameter definitions)? 3. Are there significant within-subjects differences(year)in these parameters since the 2009 baseline data foreach vegetation type and when (what year) do the differences occur? 4. What are the between-subjects and within-subjects interactions (i.e., vegetation type x sample year) forselected vegetation parameterssince 2009?