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<br />1 <br /> <br />1 <br />1 <br /> <br /> <br />t <br /> <br /> <br />1 <br /> <br /> <br />1 <br /> <br />1 <br /> <br /> <br />parameter value). The eggs produced, per female, for each year is randomly generated <br />based upon the expected production ± a randomly generated standard-normal deviate. <br />The standard-normal deviate depends upon the standard deviation observed in egg <br />production per female. A proportion of the eggs die based upon an egg specific <br />mortality rate, which varies stochastically as described earlier, (now a lognormal <br />distribution) then the larval fish disperse downstream from the spawning bed and <br />become age-0 fish. Like the adults, the age-0 fish move into a segment (solid arrows). <br />If the number offish already present equals carrying capacity, then the age-0 fish <br />continue downstream. If the carrying capacity is not exceeded, then a number remains <br />so that the carrying capacity is equaled and the remaining larvae continue downstream. <br />For each habitat segment that the larvae move through in moving downstream from the <br />means that the further a larval fish has to move downstream, the less likely it is to <br />spawning bed, a proportion die based upon a larval mortality rate for dispersal. This <br />survive. The model is currently set to 25% mortality for drifting larvae. <br />3. The surviving juveniles remain in the river segment if the carrying capacity for their <br />age category's carrying capacity is nod exceeded (dashed arrows). If the carrying <br />capacity is exceeded, the excess individuals of the juvenile age class leave the <br />segment and continue to move downstream until they find a segment where the <br />carrying capacity is not yet attained. The number of individuals needed to raise the <br />juvenile population in the segment to carrying capacity remain and the excess proceed <br />downstream. For each habitat segment that the juveniles move through in moving <br />11 <br /> <br />