Table 2 Spatial GAM summaries.

From: Otolith chemoscape analysis in whiting links fishing grounds to nursery areas

Element

Explanatory variables

edf

F- statistic

p

Cross-validation (Spearman’s rank correlation)

Na

so(x, y) Gaussian

1.92

0.79

<0.01

ρ = 0.93, p < 0.01

Mg

so(x, y) Gaussian

2.47

2.23

<0.001

ρ = 0.86, p < 0.05

Ba

so(x, y) Gamma

3.95

3.08

<0.001

ρ = 0.82, p < 0.05

Sr

so(x, y) Gaussian

5.55

4.23

<0.001

ρ = 0.96, p < 0.01

Mn

so(x, y) Gamma

4.53

2.94

<0.001

ρ = 0.99, p < 0.001

Rb

so(x, y) Gamma

4.46

2.22

<0.001

ρ = 0.96, p < 0.01

  1. Explanatory variables retained during model selection and Spearman’s roh (ρ) and p-values for the results of the spatial GAM cross-validation are displayed. “so” denotes soap-film smoother applied to spatial variables modelled using the indicated distribution.