Table 8. Models tested using the indices ES10 (X), BENTIX_B (Y) and BENTIX (Z): A. Mean ecological quality ratio (EQR) values using the original data set; B. Mean EQR values using independent data for validation. In black: models selected for validation; in dark grey: models with three indices; in light grey: models with two indices; in white: multiple linear regression (MLR) model, and MarMAT assessment results [(EQR and associated ecological quality status (EQS)]. In bold: highest correlations with MarMAT. A.
RMAT samples
Three indices Two indices MarMAT MLR X+Y+Z X+2Y+Z X+2Y+2Z 2X+Y+Z 2X+2Y+Z 3X+Y+Z 3X+2Y+Z 2X+3Y+Z 3X+3Y+Z 1.5X+1.5Y+Z X+Y 2X+Y X+2Y AIC = -730.04 EQR EQS /3 /4 /5 /4 /5 /5 /6 /6 /7 /4 /2 /3 /3 R2 = 0.3933 Site 1 0.551 0.557 0.586 0.507 0.521 0.480 0.496 0.530 0.508 0.532 0.475 0.442 0.509 0.735 0.667 G Site 2 0.678 0.700 0.723 0.622 0.650 0.588 0.617 0.669 0.638 0.661 0.608 0.556 0.660 0.786 0.806 H Site 3 0.756 0.767 0.784 0.722 0.737 0.701 0.717 0.748 0.729 0.744 0.708 0.678 0.739 0.812 0.861 H
