FISHERY BULLETIN: VOL. 70. NO. 2 



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Figure 1. — Small-scale distribution patterns of Nitzschia turgiduloides. (a) Fluctuations in the abundance of 

 chains, 35 m. (b-d) Fluctuations of the mean, two-sample variance, s^^, with increasing sample interval, i, com- 

 pared with total variance, s^^, of 10 samples: (b) 10 m; (c) 35 m; (d) 50 m; analysis run with (dotted line) 

 and without (dashed line) substation h. 



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