Table 1 Life table of bison from TD10.2-BB, inferred from the proportion of individuals for each age class (dx).
Age intervals (years) (X) | lx | dx | qx | sx | Pi | mx | lxmx | xlxmx | Results |
|---|---|---|---|---|---|---|---|---|---|
0 (0–2) | 1.00 | 0.31 | 0.31 | 0.69 | 0,40 | 0.00 | 0.00 | 0.00 | |
1 (2–4) | 0.69 | 0.38 | 0.55 | 0.45 | 0,28 | 0.78 | 0.54 | 0.54 | |
2 (4–6) | 0.31 | 0.06 | 0.20 | 0.80 | 0,13 | 0.88 | 0.28 | 0.55 | |
3 (6–8) | 0.25 | 0.13 | 0.50 | 0.50 | 0,10 | 0.88 | 0.22 | 0.66 | |
4 (8–10) | 0.13 | 0.08 | 0.67 | 0.33 | 0,05 | 0.88 | 0.11 | 0.44 | |
5 (10–12) | 0.04 | 0.00 | 0.00 | 1.00 | 0,02 | 0.88 | 0.04 | 0.18 | |
6 (12–14) | 0.04 | 0.02 | 0.50 | 0.50 | 0,02 | 0.88 | 0.04 | 0.22 | |
7 (14–16) | 0.02 | 0.02 | 1.00 | 0.00 | 0,01 | 0.44 | 0.01 | 0.06 | |
8 (16–18) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | |
9 (18–20) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | |
Average | 0.47 | 0.53 | 0.56 | ||||||
Total | 2.48 | 1.00 | 3.72 | 4.28 | 1.23 | 2.66 | |||
Net reproductive rate (R0) | 1.228 | ||||||||
Mean generation time (T) | 2.169 | ||||||||
Lambda or asymptotic growth rate (λ)* | 1.099 | ||||||||
