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Table 2 Overview of the generalized lineal mixed-effect models (GLMMs) fitted to investigate the relationship between diving intensity and day length, and the linear mixed-effect models (LMMs) applied to investigate the correlation between diving depth and depth of the mixed layer. Regression coefficients with 95% CIs are given for the models with the best fit (lowest AIC value)

From: Revealing the full ocean migration of individual Atlantic salmon

Model Response variable Predictor variable Random effects AIC Regression coefficient (95% CI)
Null model (GLMM) Dives per week Intercept 3168.6  
GLMM 1 Dives per week Day length Intercept 2955.9  
GLMM 2 Dives per week Day length Intercept slope 2946.1 0.1 (0.07–0.13)
Null model (LMM) Mean weekly diving depth Intercept 789.5  
LMM 1 Mean weekly diving depth Mixed-layer depth Intercept 707.1  
LMM 2 Mean weekly diving depth Mixed-layer depth Intercept slope 700.1 0.29 (0.16–0.42)