Vancouver Island COSEWIC assessment and status report: appendix 1
Appendix 1 - Life-table
Life-table for wild (1987-2006) and captive (1997-2006) populations of Vancouver Island marmots
Life-table nomenclature and calculations follow Caughley (1977; Method 2), and were implemented using PopTools (Hood 2006) with data for ear-tagged individuals (updated from Bryant 1998).
| Wild | f(x) Males |
dx Males |
qx Males |
lx Males |
Lx Males |
f(x) Females |
dx Females |
qx Females |
lx Females |
Lx Females |
bx Females |
lx*bx Females |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pups |
34
|
14
|
0.41
|
1.00
|
1000
|
41
|
21
|
0.51
|
1.00
|
1000
|
0.00
|
0.00
|
| Yearlings |
47
|
17
|
0.36
|
0.59
|
588
|
46
|
14
|
0.30
|
0.49
|
488
|
0.00
|
0.00
|
| 2 year-olds |
48
|
24
|
0.50
|
0.64
|
375
|
43
|
16
|
0.37
|
0.70
|
339
|
0.08
|
0.03
|
| 3 year-olds |
52
|
21
|
0.40
|
0.50
|
188
|
49
|
14
|
0.29
|
0.63
|
213
|
0.53
|
0.11
|
| 4 year-olds |
32
|
10
|
0.31
|
0.60
|
112
|
46
|
16
|
0.35
|
0.71
|
152
|
0.86
|
0.13
|
| 5 year-olds |
21
|
7
|
0.33
|
0.69
|
77
|
29
|
6
|
0.21
|
0.65
|
99
|
0.69
|
0.07
|
| 6 year-olds |
14
|
9
|
0.64
|
0.67
|
51
|
20
|
9
|
0.45
|
0.79
|
79
|
0.78
|
0.06
|
| 7 year-olds |
4
|
1
|
0.25
|
0.36
|
18
|
9
|
3
|
0.33
|
0.55
|
43
|
0.64
|
0.03
|
| 8 year-olds |
3
|
1
|
0.33
|
0.75
|
14
|
6
|
1
|
0.17
|
0.67
|
29
|
1.87
|
0.05
|
| 9 year-olds |
1
|
0
|
0.00
|
0.67
|
9
|
5
|
1
|
0.20
|
0.83
|
24
|
0.68
|
0.02
|
| 10 year-olds |
1
|
1
|
1.00
|
1.00
|
9
|
3
|
3
|
1.00
|
0.80
|
19
|
0.68
|
0.01
|
| 11 year-olds |
0
|
0
|
0.00
|
0.00
|
0
|
0
|
0
|
0.00
|
0.00
|
0
|
0.00
|
0.00
|
| 12 year-olds |
0
|
0
|
0.00
|
0.00
|
0
|
0
|
0
|
0.00
|
0.00
|
0
|
0.00
|
0.00
|
| 13 year-olds |
0
|
0
|
0.00
|
0.00
|
0
|
0
|
0
|
0.00
|
0.00
|
0
|
0.00
|
0.00
|
| 14 year-olds |
0
|
0
|
0.00
|
0.00
|
0
|
0
|
0
|
0.00
|
0.00
|
0
|
0.00
|
0.00
|
|
257
|
105
|
|
|
|
297
|
104
|
|
|
|
R
o=
|
0.51
|
|
|
|
|
|
|
|
|
|
|
|
|
l =
|
0.888
|
| Captive | f(x) Males |
dx Males |
qx Males |
lx Males |
Lx Males |
f(x) Females |
dx Females |
qx Females |
lx Females |
Lx Females |
bx Females |
lx*bx Females |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pups |
91
|
3
|
0.03
|
1.00
|
1000
|
55
|
2
|
0.04
|
1.00
|
1000
|
0.00
|
0.00
|
| Yearlings |
57
|
0
|
0.00
|
0.97
|
967
|
38
|
0
|
0.00
|
0.96
|
964
|
0.00
|
0.00
|
| 2 year-olds |
40
|
4
|
0.10
|
1.00
|
967
|
27
|
1
|
0.04
|
1.00
|
964
|
0.23
|
0.22
|
| 3 year-olds |
28
|
1
|
0.04
|
0.90
|
870
|
20
|
1
|
0.05
|
0.96
|
928
|
0.48
|
0.44
|
| 4 year-olds |
23
|
1
|
0.04
|
0.96
|
839
|
16
|
1
|
0.06
|
0.95
|
882
|
0.50
|
0.44
|
| 5 year-olds |
18
|
0
|
0.00
|
0.96
|
803
|
14
|
1
|
0.07
|
0.94
|
826
|
0.67
|
0.55
|
| 6 year-olds |
13
|
1
|
0.08
|
1.00
|
803
|
12
|
0
|
0.00
|
0.93
|
767
|
0.80
|
0.61
|
| 7 year-olds |
9
|
1
|
0.11
|
0.92
|
741
|
10
|
0
|
0.00
|
1.00
|
767
|
0.73
|
0.56
|
| 8 year-olds |
6
|
0
|
0.00
|
0.89
|
659
|
8
|
1
|
0.13
|
1.00
|
767
|
0.56
|
0.43
|
| 9 year-olds |
5
|
1
|
0.20
|
1.00
|
659
|
4
|
0
|
0.00
|
0.88
|
671
|
1.67
|
1.12
|
| 10 year-olds |
2
|
1
|
0.50
|
0.80
|
527
|
4
|
1
|
0.25
|
1.00
|
671
|
0.50
|
0.34
|
| 11 year-olds |
0
|
0
|
0.00
|
0.00
|
0
|
3
|
0
|
0.00
|
0.75
|
504
|
0.00
|
0.00
|
| 12 year-olds |
0
|
0
|
0.00
|
0.00
|
0
|
2
|
1
|
0.50
|
1.00
|
504
|
0.00
|
0.00
|
| 13 year-olds |
0
|
0
|
0.00
|
0.00
|
0
|
1
|
0
|
0.00
|
0.50
|
252
|
0.00
|
0.00
|
| 14 year-olds |
0
|
0
|
0.00
|
0.00
|
0
|
1
|
1
|
1.00
|
1.00
|
252
|
0.00
|
0.00
|
|
292
|
13
|
|
|
|
215
|
10
|
|
|
|
R
o=
|
4.71
|
|
|
|
|
|
|
|
|
|
|
|
|
l =
|
1.310
|
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