Table 1. Parameters and their values or functions used to calculate their values used in the Ivory Gull colony persistence model for Ellesmere Island and Devon Island.
| |
| |
|
Parameter |
Value or function |
| |
|
Number of colonies |
24 |
|
Initial population size |
225 pairs in 17 occupied colonies;
13 ± 31 pairs per occupied
site (mean ± SD) |
|
Probability of extinction |
 |
|
Probability of colonization |
0.189 ± 0.054 (mean ± SE) |
|
Size of colonies that persist |
Nt+1 = 0.755 ± 0.132Nt |
|
Size of colonies that are newly colonized |
7.7 ± 12.3 (mean ± SD; drawn from a skewed distribution) |
|
| |
|