Martinson et al.: Growth and survival of Oncorhynchus nerka 
499 
Table 5 
Correlation coefficients (r), P-values, and sample sizes (n) relating survival to climatic and oceanic (C-O) conditions of the North 
Pacific Ocean experienced by the age-2.2 sockeye salmon ( Oncorhynchus nerka) from Karluk River and Karluk Lake during their 
juvenile, immature, and maturing stages at sea. Survival is the residuals of the Ricker spawner-recruitment curve of Karluk 
sockeye. C-0 indices comprise the average spring (Mar-May) coastal sea-surface temperature (SST), cumulative winter and 
spring (Dec-May) coastal precipitation amounts (PREC), cumulative winter (Dec-Mar) coastal upwelling (UD, average winter 
(Dec-Mar) Atmospheric Forcing Index (AFI), and the average winter (Dec-Feb) Northern Oscillation Index (NOI). Relationships 
between any pair of variables in the correlation table are significant at 5% (P<0. 010 = 0. 05/5) and 1% (P<0. 002 = 0. 01/5), indicated 
by * and **, respectively. 
C-0 indices for the North Pacific Ocean 
Marine 
life stage 
SST 
PREC 
UI 
AFI 
NOI 
1921-89 brood years 
juvenile 
r 
0.409* 
0.214 
0.300 
0.314* 
-0.140 
p 
0.007 
0.098 
0.043 
0.009 
0.360 
n 
42 
61 
46 
69 
45 
immature 
r 
0.567** 
0.154 
0.349 
0.307* 
-0.112 
p 
0.00007 
0.234 
0.016 
0.010 
0.458 
n 
43 
62 
47 
69 
46 
maturing 
r 
0.536** 
0.240 
0.258 
0.364** 
-0.138 
p 
0.0002 
0.059 
0.077 
0.002 
0.357 
n 
44 
63 
48 
69 
47 
1948-89 brood years 
juvenile 
r 
0.409* 
0.397* 
0.215 
0.447* 
-0.175 
p 
0.007 
0.009 
0.172 
0.003 
0.267 
n 
42 
42 
42 
42 
42 
immature 
r 
0.607** 
0.349* 
0.386 
0.477** 
-0.180 
p 
0.00002 
0.024 
0.012 
0.001 
0.253 
n 
42 
42 
42 
42 
42 
maturing 
r 
-0.195 
-0.178 
-0.421* 
-0.107 
0.117 
p 
0.189 
0.232 
0.003 
0.474 
0.435 
n 
42 
42 
42 
42 
42 
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