Regression coefficients for the mean plant size index (total plot mass divided by the density) and density relationships for the years 1999 through 2002 and the evenness and density relationship in 2002.

Significant values (Pbold. These data are plotted in Figures 1 and 3. The negative slopes indicate negative density dependence (or competition) for the plant size index. Model type refers to the data transformation that best linearizes the data. The degrees of freedom (df = 53) are for the model and error combined.