Input files for ordination analysis

The six essential files here relate to the main ordination results and Fig. 3 of the main paper. They are based on the data sets for large trees (stem diameter ≥ 50 cm) in the P- and NW plots, viz. p91lar, p05lar and nw03lar, and applying the two alternative 1-ha grids (‘xa’, origin of plot [offset = 0, in title line]; ‘xb’, origin shifted [=1]: see main paper text for explanation). The format is ‘Cornell condensed’: each set of lines starting with the sample number (here 1-ha subplots) has several pairs of values – one the species’ number and the other its abundance (in this case basal area dm2/ha [‘ba/d’ = 1 in title line]), for those species present in that subplot. At the end of the file are listed the species’ codes (refer to codes.txt) and sample numbers (80 for P-plot, 49 for NW-plot). Rare species were not excluded. Note: the format line may need adjusting slightly to suit different programs; here it is set for PC-ORD; McCune & Grace 2002).