Research Article

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

Table 1

Summary statistics for 22 chemistry (concentration/ppm), habitat, and land use variables by fish grouping cluster (see Figure 2(a)) in watersheds of the Big Oaks National Wildlife Refuge.

VariableMeanMinMaxSD

Cluster 1
 Arsenic112.350.28.152.64
 Calcium11104.457514521.95
 Chloride1112.510.054413.37
 Fluoride110.140.050.30.08
 Hardness11153.4511821531.27
 Nitrogen110.40.012.80.84
 Total phosphorus110.110.030.410.11
 Sodium116.982.2720.14.87
 Total solids11300.731801010240.92
 Conductivity11493.73212600706.16
 QHEI1155.772569.511.23
 QHEI—substrate score1111.411153.77
 QHEI—instream cover score116.642113.38
 QHEI—riparian score118.824101.82
 QHEI—pool/glide score114.64381.29
 QHEI—riffle/run score113.73051.62
 QHEI—gradient score114.55281.81
 Water land use111.88014.624.38
 Agricultural land use1126.84053.0722.26
 Grass/pasture land use1127.010.1359.7522.72
 Forest land use1139.91096.4736.5
 Industrial land use113.92013.195.7
Cluster 2
 Arsenic100.470.21.730.58
 Calcium1081.32815636.95
 Chloride103.850.05125.1
 Fluoride100.090.050.10.02
 Hardness10113.23823554.49
 Nitrogen100.080.010.50.16
 Total phosphorus100.050.030.130.04
 Sodium104.992.1616.94.52
 Total solids10163.69030055.65
 Conductivity10237.0987.2477105.49
 QHEI1060.8550.5799.51
 QHEI—substrate score1013.2510.5172.14
 QHEI—instream cover score106.52123.44
 QHEI—riparian score109.858.5100.47
 QHEI—pool/glide score105471.15
 QHEI—riffle/run score104.4271.51
 QHEI—gradient score1054102.16
 Water land use107.990.6119.345.82
 Agricultural land use106.80.2220.17.56
 Grass/pasture land use1011.70.0534.5713.84
 Forest land use1063.0940.4681.5914.74
 Industrial land use109.01017.966.12
Cluster 3
 Arsenic161.790.22.860.56
 Calcium16119.568515422.47
 Chloride1630.631212426.98
 Fluoride160.180.10.50.11
 Hardness16166.3810822637.37
 Nitrogen162.420.01245.96
 Total phosphorus160.240.041.820.44
 Sodium1615.755.3471.316.35
 Total solids16279.519257597
 Conductivity16438.25313812128.76
 QHEI1657.783867.57.91
 QHEI—substrate score1613.5311171.94
 QHEI—instream cover score166.252122.27
 QHEI—riparian score167.284102.18
 QHEI—pool/glide score165.94491.53
 QHEI—riffle/run score164.0315.51.41
 QHEI—gradient score1664102.42
 Water land use161.040.175.671.27
 Agricultural land use1641.837.8854.2712.18
 Grass/pasture land use1637.7125.4357.8110.19
 Forest land use1617.889.3544.68.23
 Industrial land use160.4907.91.97
Cluster 4
 Arsenic71.861.343.670.81
 Calcium7902211732.14
 Chloride77.170.05209.2
 Fluoride70.060.050.10.02
 Hardness7128.143517847.11
 Nitrogen70.040.010.20.07
 Total phosphorus70.070.030.10.02
 Sodium75.113.048.382.05
 Total solids7195.578826459.26
 Conductivity7266.8472.937099.88
 QHEI75941.565.58.79
 QHEI—substrate score712.511151.71
 QHEI—instream cover score710.577152.94
 QHEI—riparian score793102.65
 QHEI—pool/glide score76.43570.98
 QHEI—riffle/run score72.57051.9
 QHEI—gradient score73.43240.98
 Water land use74.790.1514.315.35
 Agricultural land use718.05049.922.16
 Grass/pasture land use717.63059.7923.65
 Forest land use751.566.581.3133.88
 Industrial land use77.45022.438.49
Cluster 5
 Arsenic91.450.22.10.52
 Calcium9111.787717827.79
 Chloride96.670.05124.33
 Fluoride90.110.050.20.06
 Hardness9141.3310624543.77
 Nitrogen90.410.011.20.36
 Total phosphorus90.10.030.160.05
 Sodium94.92.348.671.85
 Total solids9204.5615529141.22
 Conductivity9266.0857.7431100.42
 QHEI963.724574.59.61
 QHEI—substrate score912.789162.12
 QHEI—instream cover score975101.87
 QHEI—riparian score99.899100.33
 QHEI—pool/glide score96.67591.32
 QHEI—riffle/run score94.67072.22
 QHEI—gradient score96.222102.91
 Water land use92.120.115.82.33
 Agricultural land use918.17036.6514.18
 Grass/pasture land use921.34047.8516.31
 Forest land use953.6324.1596.4826.75
 Industrial land use93.99017.655.82
Cluster 6
 Arsenic131.540.22.410.66
 Calcium13116.696318037.86
 Chloride1310.640.054010.06
 Fluoride130.120.050.30.09
 Hardness13150.858822048.12
 Nitrogen130.690.0151.32
 Total phosphorus130.110.030.370.09
 Sodium136.482.8522.85.18
 Total solids13218.3812936662
 Conductivity13335.54195562104.56
 QHEI1370.5454857.39
 QHEI—substrate score1314.8512181.65
 QHEI—instream cover score138.545142.67
 QHEI—riparian score139.276101.2
 QHEI—pool/glide score1375122.2
 QHEI—riffle/run score135.77371.49
 QHEI—gradient score137.544102.18
 Water land use131.880.376.252.03
 Agricultural land use1324.311.1350.9714
 Grass/pasture land use1327.245.8653.1416.76
 Forest land use1341.9917.1183.9520.59
 Industrial land use133.54020.115.76