Transect monitoring of Glow-worm Lampyris noctiluca (Coleoptera: Lampyridae) colonies in Essex
conducted in unfavourable conditions, for example, when it was cold, wet or windy, because counts
may be reduced under such climatic extremes (Alexander 1992).
Analysis of transect data
Over the three years of monitoring, nine counts were undertaken at each study site. The authors
used Kruskal Wallis multiple comparison test (Heath 1995) to determine whether there was any
statistical difference between the median density of adult females per 100m at each site. Dunn's
non-parametric procedure (Gardiner 1997) was then performed to ascertain differences in abundance
between transect sites. As there were a large number of sites being compared, the authors accepted
significant differences at P