Table 1.
Asymptotic matrix properties for rock and white-tailed ptarmigan (values are the point estimates based on a deterministic model)
| Matrix property | Rock ptarmigan | White-tailed ptarmigan |
|---|---|---|
| Asymptotic population growth rate (λ) |
1.013 |
0.957 |
| Stable age distribution (w): |
0.39/0.61 |
0.55/0.45 |
| (second year/after second year) |
|
|
| Weighted reproductive value (v): |
1.00/1.09 |
1.00/1.14 |
| (second year/after second year) |
|
|
| Net reproductive rate (Ro) |
1.036 |
0.919 |
| Generation time (T) | 2.61 | 1.90 |