Contour plots displaying the spatial pattern of predicted larva density assuming a CTH of 0% and a DWT of 4 m employing negative binomial regression models (Eq.8.51) with conventional thin plate splines (A) and thin plate splines with 1
order derivative penalty and slightly reduced dimension of the spatial trend (B). The transect highlighted by a dashed line connects the three geographic locations used in the model computations. The light gray triangle represents a location with a low, the dark gray circle with a medium, and the black square with a high spatial effect. The outermost isolines of the three distinct areas connect locations with predictions of 2 larvae · m−2.