Figure 5. Mean errors of the predictions (A–E) and correlation coefficients (r²; F–J) between measured and predicted values of the interpolations from Inverse Distance Weighting (IDW) and Ordinary Kriging (OK) using datasets with different sampling distances (5, 10 and 20 m) of the abundance of macroalgae, octocorals, sponges, zoantharians and Millepora alcicornis (millepora) at Madagascar reef, Gulf of Mexico.