Table 1. Model coefficients, escapement (Sm) resulting in maximum yield, and AIC values for stock recruitment models of pink salmon fitted to data between 1962 and 1997. Results are shown for northern (NSE), southern (SSE), and combined northern and southern (SE) regions of southeastern Alaska.
Region | Model | T | Sm | AIC |
||||
SE | Ricker | 1.69 | -0.03 | -- | -- | -- | 80.52 | |
Ricker temp. | 0.52 | -0.03 | -- | 0.04 | -- | 80.15 | ||
Gamma | 0.10 | 0.25 | 3.47 | -- | 14.11 | 77.33 | ||
Gamma temp. | 0.03 | 0.29 | 3.68 | 0.05 | 12.59 | 71.23 | * | |
NSE | Ricker | 2.34 | 0.00 | -- | -- | -- | 93.75 | |
Ricker temp. | 0.63 | 0.00 | -- | 0.05 | 454.73 | 91.23 | ||
Gamma | 0.40 | 0.43 | 3.55 | -- | 8.34 | 88.70 | ||
Gamma temp. | 0.12 | 0.47 | 3.56 | 0.05 | 7.61 | 82.08 | * | |
SSE | Ricker | 1.13 | -0.07 | -- | -- | -- | 104.29 | |
Ricker temp. | 0.67 | -0.04 | -- | 0.02 | -- | 105.71 | ||
Gamma | 0.70 | 0.34 | 2.63 | -- | 7.70 | 104.35 | * | |
Gamma temp. | 0.26 | 0.49 | 3.15 | 0.04 | 6.38 | 104.75 |
Table 2. Model coefficients, escapement (Sm)
resulting in maximum yield, and AIC values for stock recruitment models of pink salmon
fitted to data between 1979 and 1997. Results are shown for northern (NSE), southern
(SSE), and combined northern and southern (SE) regions of southeastern Alaska.
Region | Model | T | S | Sm | AIC |
||||
SE | Ricker | 9.33E+00 | 0.10 | -- | -- | -- | 9.73 | 37.71 | |
Ricker temp. | 7.55E+00 | 0.11 | -- | 0.01 | -- | 9.50 | 39.60 | ||
Gamma | 5.87E-06 | 0.83 | 10.37 | -- | -- | 12.52 | 33.79 | ||
Gamma temp. | 7.01E-06 | 0.82 | 10.12 | 0.01 | -- | 12.41 | 35.41 | ||
Ricker -- scale | 5.04E-04 | 0.09 | -- | -- | 0.13 | 10.58 | 23.16 | ||
Ricker temp. scale | 4.04E-04 | 0.10 | -- | 0.01 | 0.13 | 10.08 | 24.76 | ||
Gamma -- scale | 6.02E-06 | 0.41 | 4.98 | -- | 0.11 | 12.27 | 21.52 | * | |
Gamma temp. scale | 3.59E-06 | 0.41 | 5.02 | 0.01 | 0.11 | 12.17 | 23.16 | ||
NSE | Ricker | 1.42E+01 | 0.21 | -- | -- | -- | 4.83 | 39.69 | |
Ricker temp. | 8.38E+00 | 0.22 | -- | 0.02 | -- | 4.48 | 41.10 | ||
Gamma | 1.12E-01 | 0.73 | 5.44 | -- | -- | 7.49 | 38.54 | ||
Gamma temp. | 1.03E-01 | 0.70 | 5.13 | 0.02 | -- | 7.29 | 40.28 | ||
Ricker -- scale | 1.07E-03 | 0.21 | -- | -- | 0.13 | 4.80 | 29.05 | ||
Ricker temp. scale | 8.57E-04 | 0.22 | -- | 0.02 | 0.12 | 4.45 | 29.61 | ||
Gamma -- scale | 1.80E-04 | 0.48 | 3.33 | -- | 0.12 | 6.90 | 29.03 | * | |
Gamma temp. scale | 1.72E-04 | 0.48 | 3.21 | 0.02 | 0.11 | 6.65 | 29.95 | ||
SSE | Ricker | 2.20E+00 | 0.05 | -- | -- | -- | 19.24 | 51.75 | |
Ricker temp. | 2.76E+00 | 0.05 | -- | -0.01 | -- | 19.06 | 53.64 | ||
Gamma | 1.69E-01 | 0.88 | 5.32 | -- | -- | 6.05 | 52.19 | ||
Gamma temp. | 1.38E-01 | 0.90 | 5.41 | 0.01 | -- | 6.02 | 54.22 | ||
Ricker -- scale | 1.19E-04 | 0.06 | -- | -- | 0.13 | 17.56 | 45.88 | ||
Ricker temp. scale | 1.29E-04 | 0.05 | -- | 0.00 | 0.13 | 18.93 | 47.75 | ||
Gamma -- scale | 1.70E-05 | 0.77 | 4.89 | -- | 0.13 | 6.33 | 47.74 | * | |
Gamma temp. scale | 1.73E-05 | 0.76 | 4.82 | 0.00 | 0.13 | 6.31 | 49.69 |