Protection for amphibians on roads in Nordrhein-Westphalia

Published source details Feldmann R. & Geiger A. (1989) Protection for amphibians on roads in Nordrhein-Westphalia. Amphibians and Roads: Proceedings of the Toad Tunnel Conference, Rendsburg, Federal Republic of Germany, 51-57.
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This study is summarised as evidence for the following.

	Action	Category
	Use humans to assist migrating amphibians across roads Action Link
	Close roads during seasonal amphibian migration Action Link
	Install barrier fencing along roads Action Link

Use humans to assist migrating amphibians across roads

A study in 1986 of 114 sites that included at least 23 human-assisted road crossings, 60 amphibian barrier fences and 11 road closure sites in Nordrhein-Westphalia, Germany (Feldmann & Geiger 1989) found that 131,061 amphibians were protected from death on roads. Between one and 116,515 individuals of 14 species were recorded at each hand-assisted, barrier fence or road crossing site. Animals were collected by hand and assisted across roads during breeding migrations at 23 sites. Nine sites had a combination of two of the interventions and for 20 sites it was unknown which of the interventions were used.
Close roads during seasonal amphibian migration

A replicated study in 1986 of 114 sites including at least 11 road closure sites, 60 amphibian barrier fences and 23 hand-collected human-assisted crossings in Nordrhein-Westphalia, Germany (Feldmann & Geiger 1989) found that 131,061 amphibians were protected from death on roads during breeding migrations. Between one and 116,515 individuals of 14 species were recorded at the road closure sites, assisted crossings and barrier fences at the 114 sites. Nine sites had a combination of two of the interventions and for 20 sites it was unknown which of the interventions were used.
Install barrier fencing along roads

A replicated study in 1986 of 114 sites including at least 60 amphibian barrier fences, 11 road closure sites and 23 hand-collected human assisted crossings in Nordrhein-Westphalia, Germany (Feldmann & Geiger 1989) found that a total of 131,061 amphibians were protected from death on roads. Between one and 116,515 individuals of 14 species were recorded at each barrier fence, road crossings or hand-collected crossing. The majority of the 60 barrier fences to protect amphibians were constructed from polythene and averaged 600 m in length (range: 30–3,000 m). Animals were collected by hand alone at 23 sites and at 11 sites roads were closed for migrations. Nine sites had a combination of two of the interventions and for 20 sites it was unknown which of the interventions were used.