Parameters used to simulate animal tracks containing area-restricted search (ARS) patterns
| Parameter . | Characteristic . | Calculation for Albatross-like tracks . | Calculation for Elephant seal-like tracks . |
|---|---|---|---|
| Interval between steps | Constant | 5 min | 5 min |
| Average animal speed (km h-1) | Random (truncated normal) | 30±20 (0.1-100) | 3.5±2.3 (0.1-7) |
| Speed during directed movements | Average speed + random change | Random change = 10-30% (uniform) | Random change = 10-30% (uniform) |
| Sinuosity during directed movements | Random (circular normal). Mean=0 | Random s.d. = 0.005-0.010 (uniform) | Random s.d. = 0.005-0.010 (uniform) |
| Speed during intermediate movements | Random (truncated normal) | Same as average speed (above) | Same as average speed (above) |
| Sinuosity during intermediate movements | Random (circular normal). Mean=0 | Random s.d. = 0.04-0.06 (uniform) | Random s.d. = 0.04-0.06 (uniform) |
| Speed during ARS movements | Average speed - random change | Random change = 10-30% (uniform) | Random change = 10-30% (uniform) |
| Sinuosity during ARS movements | Random (circular normal). Mean=0 | Random s.d. = 0.5-0.7 (uniform) | Random s.d. = 0.5-0.7 (uniform) |
| Number of ARS in the track | Random (uniform) | 1-20 | 1-20 |
| Maximum size of ARS (radius) | Random (uniform) | 1-60 km | 1-60 km |
| Time spent in ARS | Random (uniform) | 3-56 h | 10-480 h |
| Parameter . | Characteristic . | Calculation for Albatross-like tracks . | Calculation for Elephant seal-like tracks . |
|---|---|---|---|
| Interval between steps | Constant | 5 min | 5 min |
| Average animal speed (km h-1) | Random (truncated normal) | 30±20 (0.1-100) | 3.5±2.3 (0.1-7) |
| Speed during directed movements | Average speed + random change | Random change = 10-30% (uniform) | Random change = 10-30% (uniform) |
| Sinuosity during directed movements | Random (circular normal). Mean=0 | Random s.d. = 0.005-0.010 (uniform) | Random s.d. = 0.005-0.010 (uniform) |
| Speed during intermediate movements | Random (truncated normal) | Same as average speed (above) | Same as average speed (above) |
| Sinuosity during intermediate movements | Random (circular normal). Mean=0 | Random s.d. = 0.04-0.06 (uniform) | Random s.d. = 0.04-0.06 (uniform) |
| Speed during ARS movements | Average speed - random change | Random change = 10-30% (uniform) | Random change = 10-30% (uniform) |
| Sinuosity during ARS movements | Random (circular normal). Mean=0 | Random s.d. = 0.5-0.7 (uniform) | Random s.d. = 0.5-0.7 (uniform) |
| Number of ARS in the track | Random (uniform) | 1-20 | 1-20 |
| Maximum size of ARS (radius) | Random (uniform) | 1-60 km | 1-60 km |
| Time spent in ARS | Random (uniform) | 3-56 h | 10-480 h |
When randomly selected values from a normal distribution were used, the mean and s.d. of the distribution is given. Minimum and maximum values are given in parentheses. The terms `normal' and `uniform' refer to the type of distribution.