Table 4
Spearman correlation coefficients between water quality (WQ) and in-stream habitat structure (HS) variables and their indexes (left), and between water quality and riparian condition (RC) variables and their indexes (right). Only high (rho≥ 0.7) and significant (p value< 0.05) correlations are shown. Variable codes as Table 1, 2 and 3.
| WQ | HS | rho | p value | WQ | RC | rho | p value |
|---|---|---|---|---|---|---|---|
| T | Subsand | –0.78 | 0.003 | pH | Riwid avg | 0.71 | 0.009 |
| pH | Subgrav | –0.65 | 0.031 | DO | Riwid avg | 0.77 | 0.004 |
| DO | Cwid avg | 0.71 | 0.018 | K | Riwid avg | –0.85 | 0.001 |
| DO | Pools | 0.74 | 0.006 | TSS | Hcov | –0.84 | 0.001 |
| DO | Subgrav | –0.76 | 0.012 | TSS | Canocov | 0.81 | 0.001 |
| K | Cwid avg | –0.74 | 0.014 | NO3:NH4 | Riwid avg | 0.85 | 0.001 |
| K | Wdep avg | –0.7 | 0.011 | COD | Riwid avg | –0.78 | 0.003 |
| K | Sdep avg | 0.85 | 0.005 | COD | Hcov | –0.65 | 0.022 |
| TSS | Submacro | –0.76 | 0.004 | Meso | Riwid avg | –0.75 | 0.005 |
| NO3:NH4 | Cwid avg | 0.67 | 0.018 | Ecol | Riwid avg | –0.72 | 0.008 |
| NO3:NH4 | Pools | 0.69 | 0.014 | WQI Bas | RI Ross | 0.69 | 0.013 |
| NO3:NH4 | Suboul | 0.69 | 0.013 | WQI Ber | RI Ross | 0.67 | 0.018 |
| COD | Cwid avg | –0.89 | 0.003 | ||||
| COD | Suboul | –0.72 | 0.009 | ||||
| Meso | Pools | –0.86 | 0.0004 | ||||
| Meso | Suboul | –0.71 | 0.009 | ||||
| Ecol | Cwid avg | –0.8 | 0.002 | ||||
| Ecol | Wdep avg | –0.75 | 0.005 | ||||
| Ecol | Pools | –0.73 | 0.008 | ||||
| Ecol | Backwa | 0.73 | 0.007 | ||||
| Ecol | Subgrav | 0.67 | 0.017 | ||||
| WQI Bas | HI Coc | 0.68 | 0.025 | ||||
| WQI Bas | HI Bar | 0.89 | 0.0001 | ||||
| WQI Ber | HI Coc | 0.71 | 0.009 | ||||
| WQI Ber | HI Bar | 0.9 | 0.0001 | ||||
| WQI Mos | HI Bar | 0.74 | 0.006 | ||||
| WQI Que | HI Coc | 0.87 | 0.004 | ||||
| WQI Deb | HI Coc | 0.7 | 0.02 |
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