Extended Data Fig. 2: Characteristics of the neighbourhood crowding indices.
From: Consequences of spatial patterns for coexistence in species-rich plant communities
Distribution of the mean and the variance-to-mean ratio of the crowding indices for the different species at each forest plot with boxplots indicating 10th, 25th, 50th, 75th, 90th percentiles and outliers. a. The mean \(\bar n_{ff}\) of the conspecific neighbourhood crowding index nkff over species. b. The mean \(\bar n_{fh}\) of the heterospecific neighbourhood crowding index nkfh over species. c. The mean \(\bar n_{f\beta }\) of the interaction neighbourhood crowding index nkfβ over species. d. The variance-to-mean ratio bkf of the conspecific neighbourhood crowding index nkff over species. e. The variance-to-mean ratio bkh of the heterospecific neighbourhood crowding index nkfh over species. f. The variance-to-mean ratio bkβ of the interaction neighbourhood crowding index nkfβ over species. The neighbourhood radius was R = 10 m. We used for the analysis all individuals with dbh ≥ 10 cm and included focal species with more than 50 individuals. For plot names see Supplementary Table 1.