Amphibians are often attracted to light. This is a great problem during spring migration from the wintering sites to the ponds and rivers where reproduction takes place. Toads simply stay at the asphalt under streetlights, with deadly consequences.
In this project, the attractiveness of light of different color composition on different species of amphibians is tested.
Four different kinds of light have been tested in march 2012, at two test sites near Kootwijk (Veluwe) and Amerongen. The number of toads gathering under light posts was monitored by local amphibian study groups.
The data show that more amphibians cross the road at non-illuminated or red illuminated spots, and avoid white and green lighted areas. This contrasts with the earlier observations that toads accumulated at the road beneath the (white) light of light posts.