For each site, a linear model and a segmented model were fitted and compared using BIC; the best-fitting model is shown. Where the segmented model was deemed to be best-fitting, the position of the inflection point is shown with 95% confidence intervals. The inflection point from the overall model (1982.08) is shown as a dotted line, and the number of years of sample data on either side of this point annotated. Traps are ordered left-to-right and then top-to-bottom in order of starting year; note that the capacity to detect inflections is reduced where trapping was initiated from 1980 onwards. For Forest-in-Teesdale, segmented model-fitting failed to converge under all conditions, so the linear model is shown.