Figure 48. Minimal detectible difference <strong>for</strong> Taxa Richness <strong>for</strong> <strong>the</strong> Grave Creek Phase I Restoration Project. This graph assumes a= 0.05, <strong>and</strong> b=0.1. With three replicates, <strong>the</strong> taxa richness must increase from 33 to >41 <strong>for</strong> <strong>the</strong> change to be statistically significant. Similarly, if 20 samples are collected each year, a change from 33 to 36 taxa becomes statistically significant. 115
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