Individual study: Migration of toads during the spawning season at Stallauer Weiher lake, Bad Tölz, Bavaria
Haslinger H. (1989) Migration of toads during the spawning season at Stallauer Weiher lake, Bad Tölz, Bavaria. Amphibians and Roads: Proceedings of the Toad Tunnel Conference, Rendsburg, Federal Republic of Germany, 181-182.
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Use humans to assist migrating amphibians across roads
A study in 1980–1988 of a human-assisted road crossing in Bad Tölz, Bavaria (Haslinger 1989) found that thousands of toads were moved across the road each year. In 1980, a total of 15,000 toads were collected and in 1988 the figure was 7,532. Eight tunnels with wire-netting fences on both sides of the road were installed. Animals did not use tunnels and so those at the fence were collected by hand and moved across the road twice a year, before and after breeding.
Install culverts or tunnels as road crossings
A replicated study in 1980–1988 of eight tunnels with barrier fencing in Bavaria, West Germany (Haslinger 1989) found that common toads Bufo bufo did not use the tunnels. Tunnels were 60 cm in diameter. Wire-netting fences 25 cm high were installed on both sides of the road. Fences were bent over at the top to prevent toads climbing over.