Appendix C. A composite cohort life table of all Wood Thrushes at University of Delaware Woods, 1974–2004.
TABLE C1. A composite cohort life table of all Wood Thrushes at UDW, 1974–2004. Methodology and nomenclature (except genetic value, see text) follow Gotelli (1995). See text for construction of data set and explanation of terms.
Age |
Fertility |
Survivorship |
Survival |
Mean lifetime |
Reproductive |
Genetic |
|||
schedule |
schedule |
probability |
remaining |
value |
value |
||||
(days for nest stages, |
(average |
(proportion of |
(probability |
(years) |
(number of offspring |
(number of recruits |
|||
years for adults) |
fledglings |
original cohort |
an individual of |
remaining to be |
to be produced |
||||
per year) |
surviving to |
age x survives |
born to individuals |
by individuals |
|||||
start of age x) |
to age x+1) |
of age x) |
of age x) |
||||||
x |
S(x) |
b(x) |
SD |
l(x) |
g(x) |
e(x) |
v(x) |
F(x) |
|
Nest |
Eggs (0–2) |
3592 |
1.000 |
0.89 |
|||||
|
Incubation (3–15) |
3207 |
0.893 |
0.75 |
|||||
Hatchlings-Nestlings (16–29) |
2401 |
0.668 |
0.68 |
||||||
Fledglings (30–304) |
1642 |
0.457 |
0.33 |
||||||
Adults |
1 |
540 |
2.4 |
1.9 |
0.150 |
0.46 |
0.91 |
4.05 |
0.17 |
| (including | |||||||||
immigrants) |
2 |
249 |
3.1 |
2.0 |
0.069 |
0.65 |
1.16 |
5.42 |
0.24 |
|
3 |
161 |
3.4 |
2.1 |
0.045 |
0.58 |
1.00 |
4.73 |
0.18 |
4 |
94 |
3.5 |
2.3 |
0.026 |
0.64 |
0.89 |
4.27 |
0.14 |
|
5 |
60 |
3.6 |
2.2 |
0.017 |
0.53 |
0.63 |
2.85 |
0.08 |
|
6 |
32 |
3.2 |
2.1 |
0.009 |
0.47 |
0.45 |
1.95 |
0.06 |
|
7 |
15 |
3.2 |
1.9 |
0.004 |
0.47 |
0.23 |
0.83 |
0.02 |
|
8 |
7 |
1.7 |
1.7 |
0.002 |
0.00 |
0.00 |
0.00 |
0.00 |
|
R0 (net reproductive rate) = |
0.92 |
||||||||
G (generation time, years) = |
2.39 |
||||||||
corrected r = |
-0.035 |
||||||||
LITERATURE CITED
Gotelli, N. J. 1995. A primer of ecology. Sinauer Associates, Sunderland, Massachusetts, USA.