Table 21. Crayfish species diversity (Shannon) and richness (Margalef) within watersheds of the Meramec River basin (Missouri Department of Conservation Pflieger Collection).
Basin Stream Name Mile Head No. of Species Average Shannon Total (n) Average Margalef Total (n)
Dry Fork Dry Fork 17 1 0.000(1) 0.000(1)
Upper Meramec Meramec River 13-50 5 1.008(3) 0.705(3)
Stone Hill Branch 4 2 0.336(2) 0.236(2)
Unnamed Creek 1 2 0.691(1) 0.369(1)
Cutoff pool 1 0.000(1) 0.000(1)
Meramec River 9 1 0.000(1) 0.000(1)
Huzzah Creek Huzzah Creek 20-45 3 0.880(3) 0.706(3)
Unnamed Creek 1 2 0.124(1) 0.277(1)
West Fork Huzzah Creek 5 2 0.234(1) 0.361(1)
Courtois Creek Hazel Creek 5 5 0.892(3) 0.663(3)
Courtois Creek 31 3 0.766(1) 0.506(1)
Middle Meramec Hamilton Creek 3 2 0.111(1) 0.225(1)
Lower Middle Meramec Meramec River 116 3 0.736(1) 0.962(1)
Fox Creek 10 1 0.000(1) 0.000(1)
Lower Meramec Meramec River 194 4 0.775(1) 0.681(1)

(n)=number of collections Mile Head= distance in miles to headwaters

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