Figure 4
Smoothed curve of the additive effect of the environmental predictors in the GAM model on the variation in little bustard density over time (from the first survey in 2003–2006 to the current survey in 2022). Dashed-lines represent 95% confidence intervals, marks along the x-axis represent a single observation. The y-axis shows the contribution of the fitted centred smooth terms s (names of the predictor, estimated degrees of freedom) to the response variable (variation in little bustard density between surveys).
