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

Table 3

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

Variable		Mean	Min	Max	SD
Cluster 1	—	—	—	—	—
Chloride	32	9.9	0.05	44	11.14
Nitrogen	32	0.24	0.01	2.8	0.51
Total phosphorus	32	0.07	0.03	0.19	0.05
Total solids	32	202.94	90	301	47.7
QHEI—riparian score	32	9.3	4	10	1.49
QHEI—pool/glide score	32	5.53	3	9	1.46
Commercial land use	32	0.62	0	3.83	1.07
Cluster 2	—	—	—	—	—
Chloride	20	21.91	0.05	124	26.61
Nitrogen	20	2.18	0.01	24	5.41
Total phosphorus	20	0.23	0.03	1.82	0.4
Total solids	20	299.1	105	1010	197.87
QHEI—riparian score	20	8.08	3	10	2.27
QHEI—pool/glide score	20	5.65	4	8	1.27
Commercial land use	20	0.06	0	0.31	0.1
Cluster 3	—	—	—	—	—
Chloride	14	11.4	0.05	46	12.59
Nitrogen	14	0.4	0.01	1.2	0.39
Total phosphorus	14	0.1	0.05	0.16	0.04
Total solids	14	213.5	88	333	60.27
QHEI—riparian score	14	8.96	4	10	1.82
QHEI—pool/glide score	14	7.29	4	12	2.16
Commercial land use	14	1.14	0	7.78	2.4