Research Article

Associated Use Attainment Response between Multiple Aquatic Assemblage Indicators for Evaluating Catchment, Habitat, Water Quality, and Contaminants

Table 4

List of 30 physical and chemical variables significantly predictive ( = 0.05) of the fish, macroinvertebrate, and crayfish assemblage biologic gradient using the Kruskal-Wallis ANOVA by ranks test in watersheds of the Big Oaks National Wildlife Refuge.

VariableFish
-value
Macroinvertebrate
-value
Crayfish
-value

General
 Water
 Temperature
0.0036
Chemical
 Arsenic0.0070
 Barium0.0169
 Calcium0.0422
 Chloride0.00000.0347
 Fluoride0.01090.0140
 Lead0.0103
 Manganese0.0075
 Sulfate0.0477
 Hardness0.0524
 Nitrogen0.00130.0383
 Phosphorus0.01950.0280
 Sodium0.0003
 pH0.0455
 Total solids0.00100.0332
 Conductivity0.0003
Habitat
 QHEI score0.00220.0055
 Substrate score0.0228
 Instream cover
 Score
0.0354
 Channel score0.0016
 Riparian score0.00130.0511
 Pool/glide score0.00130.0172
 Riffle/run score0.00820.0023
 Gradient score0.00380.0346
Land use
 Water0.00150.0130
 Agriculture0.0003
 Grass/pasture0.0140
 Forest0.0003
 Commercial0.0076
 Industrial0.0009