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Table 2 χ2-test (χ2 (Pearson) = 153.6 p < 0.01) with individual numbers of oribatids (n) in a certain body size class

From: Slow-moving soil organisms on a water highway: aquatic dispersal and survival potential of Oribatida and Collembola in running water

   soil moss stream total
<  300 μm n 3 12 16 31
  expected 6,44 21,48 3,06  
  standardized residuals –1,35 –2,04 * 7,38 ***  
300-500 μm n 237 907 67 1211
  expected 251,75 839,43 119,81  
  standardized residuals –0,92 2.33 * –4.82 ***  
> 500 μm n 92 188 75 355
  expected 73,80 246,07 35,12  
  standardized residuals 2,11 * –3,70 *** 6,72 ***  
  Total 332 1107 158 1597
  1. *significant, **highly significant, ***very highly significant