Figure 2
From: Ticks in the wrong boxes: assessing error in blanket-drag studies due to occasional sampling
Recorded and resampled estimates of peak and total nymphal tick abundance in 2009 at two plots in southern England. Graph (a) shows the peak of recorded activity in 2009; graph (b) shows ranges of all possible three-weekly samples; graph (c) shows ranges of nymphal activity values taken on all possible single-sample dates within a 61-day window centred on the recorded peak at a separate plot the previous year; graph (d) shows ranges of activity values taken on all 31 possible double-sample dates within the same 61-day window.