Regression analysis of the macrofauna richness and density as function of the number of storm wave events (SWE) and wave height, respectively. The pink dots represent each dependent (marine debris on ghost crab burrow) and independent variables (distance from urban settlements). Blue shaded area indicates 95% confidence intervals and pink line is the distribution of residuals. Blue line is the regression straight. Only significant (p < 0.05) predictors were considered in the effects plot.