Spearman correlations between biological metrics (BMWP, IBE AQEM, HR-SI, saprobity module) and physicochemical parameters that indicate organic pollution (significant correlation p < 0.05 are shown bold). All metrics were calculated with NIMS included or excluded; saprobity module calculated with NIMS included, excluded and combined (included into IBE AQEM, excluded from HR-SI).
|BMWP||IBE AQEM||HR-SI||Saprobity module|
|included/ excluded||included / excluded||included / excluded||included / excluded / combined|
|BOD5 (mgO2 L−1)||−0.42 / -0.39||−0.26 / −0.27||0.21/0.29||−0.30 / −0.28 / −0.34|
|Organic N (mgN L−1)||−0.45 / -0.44||−0.3/−0.32||0.37 / 0.37||−0.37 / −0.30 / −0.38|
|TOC (mg L−1)||−0.20 / −0.24||−0,27/−0.28||0.08/0.19||−0.14 / −0.12 / −0.22|
|NH4 (mgN L−1)||−0.17 / −0.19||−0.21/−0.20||0.34 /0.23||−0.26/−0.21 /−0.20|
|P-total (mgP L−1)||−0.20 / −0.20||−0.22/−0.18||0.46/0.37||−0.36/−0.31 /−0.32|
|Chlorides (mg L−1)||−0.32 /−0.28||−0.24/−0.24||−0.06/−0.02||−0.10/0.00/−0.12|
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