TABLE 1

Spawner-recruit data for 36 years for Marsh Creek (Idaho) chinook salmon arranged into 4-year generations (Beamsderfer et al. 1998 and unpublished data)

YearSpawners (Ni)Recruits (Ri)Ri/Nii)Ni/NTRi/RT (Xi)
19584637321.580.230.22
195915511267.240.080.34
19605068091.600.250.25
19619336350.680.450.19
Gen 1 NT, RT20573302
196260412072.000.190.37
19636516611.020.200.20
196412596080.480.390.19
19656867661.120.210.24
Gen 2 NT, RT32003241
19667245470.760.240.23
196710995580.510.360.23
19688309921.190.270.41
19693903170.810.130.13
Gen 3 NT, RT30432414
19708294590.550.300.38
1971490870.180.170.07
1972555720.130.200.06
19739345980.640.330.49
Gen 4 NT, RT28081216
1974382920.240.380.33
1975358170.050.360.06
197676540.710.080.19
19771781180.660.180.42
Gen 5 NT, RT994281
1978491700.140.700.14
197983710.860.120.14
19801617810.860.020.35
19811151901.660.160.37
Gen 6 NT, RT705509
1982712283.220.170.27
1983604727.860.140.56
1984100560.560.230.07
1985196860.440.460.10
Gen 7 NT, RT427841
19861711020.590.190.23
1987268540.200.290.12
19883952730.690.430.61
198980210.260.090.05
Gen 8 NT, RT914449
199010120.020.200.01
19917250.070.140.02
1992114610.530.230.21
19932162251.040.430.77
Gen 9 NT, RT504293

Gen, generation.