Table 6.

Statistics for the model predicted versus observed fish and macroinvertebrate (Macr) MMI score relationship by ecoregion (Eco). Results include the Pearson correlation coefficient (r) and slope for both the BIC variable selection multiple regression model (BIC) and random forest model (RF) predictions for both the first visit data (First) and repeat visit validation data (Valid).

Eco	MMI	BIC First r	BIC Valid r	RF First r	RF Valid r	BIC First Slope	BIC Valid Slope	RF First Slope	RF Valid Slope
CPL	Fish	0.76	0.71	0.75	0.72	0.58	0.50	0.47	0.45
CPL	Macr	0.60	0.50	0.63	0.66	0.36	0.31	0.36	0.40
NAP	Fish	0.84	0.80	0.85	0.90	0.71	0.70	0.66	0.74
NAP	Macr	0.76	0.72	0.75	0.82	0.58	0.52	0.53	0.59
SAP	Fish	0.75	0.71	0.76	0.76	0.56	0.56	0.50	0.57
SAP	Macr	0.69	0.66	0.66	0.72	0.47	0.45	0.37	0.43
UMW	Fish	0.58	0.57	0.65	0.71	0.33	0.34	0.35	0.46
UMW	Macr	0.61	0.47	0.58	0.64	0.37	0.25	0.28	0.31
TPL	Fish	0.78	0.80	0.77	0.87	0.60	0.69	0.55	0.66
TPL	Macr	0.66	0.46	0.65	0.64	0.44	0.28	0.34	0.35
NPL	Fish	0.72	0.79	0.70	0.89	0.53	0.68	0.45	0.73
NPL	Macr	0.75	0.70	0.72	0.74	0.56	0.57	0.47	0.54
SPL	Fish	0.68	0.64	0.60	0.70	0.46	0.44	0.34	0.42
SPL	Macr	0.48	0.55	0.43	0.71	0.23	0.25	0.18	0.30
XER	Fish	0.79	0.78	0.77	0.83	0.63	0.66	0.51	0.61
XER	Macr	0.65	0.58	0.68	0.74	0.42	0.48	0.42	0.52
WMT	Fish	0.66	0.71	0.58	0.74	0.44	0.45	0.33	0.43
WMT	Macr	0.68	0.69	0.71	0.79	0.46	0.48	0.46	0.55