Table 1.
Data on power law relationships for three species, Dipteryx panamensis (Fabaceae), Jacaranda copaia (Bignoniaceae), and Handroanthus (formerly Tabebuia) guayacan (Bignoniaceae). Parameters of the power laws estimated from population samples of these three species within the 50 ha plot are similar to the parameters of the power laws estimated from the populations of these species mapped over the 15 km2 entirety of Barro Colorado Island (BCI). The populations for the whole islands were visible in the canopy by remote sensing, but the exact stem diameters of these trees are not known. Data courtesy of James Kellner, Brown University
| Species | Scale | Size (dbh) | Abundance | Intercept | Slope | R2 |
|---|---|---|---|---|---|---|
| Dipteryx panamensis | 50 ha plot | >1 cm | 56 | 1.6296 | 0.6478 | 0.9970 |
| 50 ha plot | >20 cm | 28 | 1.8327 | 0.6673 | 0.9878 | |
| 15 km2 (BCI) | “Canopy” | 744 | 1.7099 | 0.6586 | 0.9980 | |
| Jacaranda copaia | 50 ha plot | > 1 cm | 343 | 1.1549 | 0.6435 | 0/9995 |
| 50 ha plot | > 20 cm | 158 | 1.4000 | 0.6133 | 0.9992 | |
| 15 km2 (BCI) | “Canopy” | 832 | 1.8649 | 0.6273 | 0.9981 | |
| Handroanthus guayacan | 50 ha plot | >1 cm | 76 | 1.4297 | 0.7679 | 0.9884 |
| 50 ha plot | >20 cm | 24 | 1.9046 | 0.6572 | 0.9843 | |
| 15 km2 (BCI) | “Canopy” | 791 | 1.7099 | 0.6586 | 0.99868 |