Mean standard deviations of model predicted population distribution over time as a function of .

<p>Errorbars show standard deviations of triplicate runs. Standard deviations were low and nearly constant for of 1 second or less. For correlation times 100 s the variability in population distribution increased moderately and rapidly for correlation times of 100 s. After 30 minutes, the standard deviation in population distribution for correlation times 500 was over 20 fold greater than for an uncorrelated random walk.