Enrichment plots floral resources survey

Quadrat surveys sampling species richness and flower abundance over a proportionally large and spatially representative subset of B11 Biodiversity Enrichment Experient plots. We counted flowering species and number of flower units in 5x5 m quadrats, sampling the entirety of the 25 m2 plots and placing one quadrat in the 100 m2 plots, three quadrats in the 400 m2 plots, and 13 quadrats in the 1600 m2 plots. The total sampled areas of the plots larger than 25 m2 were therefore 25%, 19%, and 20% of the total plot area, respectively. The quadrats were stratified in space so that one quadrat was always placed in the plot center and additional quadrats were placed randomly within equal divisions of the enrichment plot. See included sampling protocol document for more information.