Table 3 Finless porpoise GAMM Results. The table includes smooths for the predictor variables. Distance shore is the measured distance from shore (km), depth (m), and the tensor product for swell and sea state measured in Beaufort. Significant predictor variables are highlighted in bold text.

From: Comparing visual and acoustic detectability of two coastal cetacean species off Sindhudurg, India, to better inform integrated survey protocol

Component

Term

Estimate

Std. Error

t-value

p-value

Parametric coefficient

Intercept

− 2.4

0.11

− 21.71

<2e−16***

 

Mixed/visual

− 1.10

0.22

− 4.89

1.1e−06***

Component

Term

edf

Ref.df

F-value

p-value

Smooth Term

s(distance shore):Acoustic

2.78

2.96

3.25

0.01781*

 

s(distance shore):Mixed/visual

1.82

2.20

1.24

0.30657

 

s(depth):Acoustic

2.31

2.69

4.64

0.00474**

 

s(depth):Mixed/visual

2.15

2.55

1.45

0.21045

 

te(swell,sea state):Acoustic

4.29

4.90

1.61

0.17500

 

te(swell,sea state):Mixed/visual

3.01

3.11

2.38

0.06476

\(R^2_{\text {adj}} = 0.082\)    Deviance Explained = 14.5%

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