In Nathan & Casagrandi (2004) Table 1 contained a number of errors. This table is reproduced in its entirety below.
Table 1. Summary of quantities, axes of variation and suggested empirical methods to estimate different parameters of the model
| D, α||Seed density (φ)||Distance||Field observations (e.g. seed traps)|
|µ||Seed mortality not associated with predation (ω)||Distance||Field experiments (e.g. seed trays protected from predation)|
| q, β||Predator density (N)||Distance||Field observations (censuses, soil samples, abundance estimators)|
| a, Th||Seed intake rate (ψ)||Seed density||Field and laboratory experiments (manipulating seed densities)|
| P̄ ||Seed probability toescape predation (P̄)||Distance||Field observations and experiments (seed trays; mortality agents other than seed predators should be controlled)|
| S̄ ||Density of seeds available for germination (S̄)||Distance||Field observations and experiments (seed bank samples)|