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Koontz, J., D.G. Huggins, C.C. Freeman, D.S. Baker - Central Plains ...

Koontz, J., D.G. Huggins, C.C. Freeman, D.S. Baker - Central Plains ...

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CDF<br />

100<br />

90<br />

80<br />

70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

0 5 10 15 20 25 30<br />

Count HM Intolerant Taxa<br />

Figure 44. Cumulative distribution frequency (CDF) of HM Intolerant Taxa in reference (Phase<br />

I) and random (Phase II) populations.<br />

To illustrate the multiple levels of congruency among assessment parameters, mean differences<br />

for study parameters earlier tested for differences between the reference (Phase I) and random<br />

(Phase II) populations also remained significant in this sample subset (n = 52). For example, log<br />

transformed total nitrogen mg/L, chlorophyll-a, log transformed mean conductivity, and number<br />

of herbicides detected again showed significantly different (p < 0.05) between the two study<br />

populations (Figure 45).<br />

62 of 84<br />

Phase One<br />

Phase Two

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