Table 1.
Metabolic rate (kg/day) |
Foraging path width (m) |
Predator daily distance moved (m) |
Prey biomass (kg/m2, terrestrial or kg/m3, marine |
||||||
---|---|---|---|---|---|---|---|---|---|
Biome | Taxonomic group | CR | bR | CW | bW | CD | bD | CB | bB |
Universal | All taxa | – | 0.75 | 0.0423 | 0.349 | – | – | – | – |
Terrestrial | mammals | 0.171 | (0.77) | 537 (350) | 0 (0.10) | 0.026 | 0.20 | ||
snakes | 0.017 | (0.889) | 45.2 (20) | 0 (0.25) | |||||
Marine | mammals | 0.171 | (0.77) | 12532 | 0.17 (0.10) | 0.008 | 0.10 | ||
sharks | 0.052 | (0.84) | 6800 (5000) | 0.16 |
Values used for lower prey size thresholds in Fig.1a and c are in bold text. Universal values were used where possible (see text for details). Parameter values used for predicting the estimated spread of predator–prey relationships, Fig.1b and d, were randomly varied ± 12.5%; mean values are shown in parentheses. References and further details are given in Appendix S1.