Individual study: Colony formation rates of 13-19% for underground bumblebee Bombus spp. nest boxes, in a garden near Ripple, Kent, England
Sladen F.W.L. (1912) The humble bee: its life history and how to domesticate it. Macmillan and Co., London
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Provide artificial nest sites for bumblebees
Sladen (1912) placed 112 underground nest boxes for bumblebees in his garden near Dover, in Kent, England in 1910 and 1911. Boxes were buried cylinders of tin or terracotta, or holes in the ground with a wooden cover, and a 38-75 cm tunnel leading to them. They were occupied by six species of bumblebee, including the short-haired bumblebee Bombus subterraneus now extinct from Britain. Thriving colonies developed in 13-19% of nest sites provided.