Fig. 6
From: Linking ringed seal foraging behaviour to environmental variability
Effects of temporal and environmental variables on foraging probability in the winter. Partial effect plots from the GAMM fitted to the dive data of Saimaa ringed seals in winter. Estimated relationships between the probability of occurrence of foraging behaviour and (A) Julian day, (B) hour of the day, (C) air temperature, (D) lake depth, and (E) openness of the water area (openness index). Females are shown in gold and males in light blue, and the solid line represents the mean and shaded area the 95% confidence intervals. Rugs on the top and bottom axes depict model predicted foraging and non-foraging, respectively. The estimated degrees of freedom for the corresponding model covariate are given in brackets. Sun symbols in figure B) mark average sunrise and sunset times (UTC) in the area over December-March. Note that the probabilities are conditional on the seals being in the water and thus do not include periods of haul-out