Estimated proportion of explained variance (adj. R2: solid line) and intercept (dashed line) as a function of minimum ground speed ( v
) starting at 0.5m/
stopping at 10m/
. Ground speed was modeled using generalized linear mixed models predicted by instantaneous direction (d
) and speed (v
) with individual as random effect and including a temporal autoregressive function to account for spatio-temporal autocorrelation.