Effectiveness

The first wildlife crossings were constructed in France during the 1950s. European countries, including the Netherlands, Switzerland, Germany and France, have been using various crossing structures to reduce the conflict between wildlife and roads for several decades and use a variety of overpasses and underpasses to protect and re-establish nature such as amphibians, badgers, ungulates, invertebrates, and other small mammals.

 

Several studies have been conducted to determine the effectiveness of wildlife corridors at providing habitat connectivity (by providing viable migration corridors) and reducing wildlife-vehicle collisions.

The effectiveness of fauna structures is predominantly site-specific. This is due to differences in location, fauna structure, species, habitat etc., but fauna crossings appear to have been beneficial to several species throughout different locations around Australia.

 

Cardwell Box Rope Fauna Crossing

A habitat corridor, wildlife corridor or green corridor is best described as an area of habitat connecting wildlife species separated by human activities (e.g. roads, development of structures, logging), fires, disease, or floods. What corridors (fauna crossings) help re-establish wildlife species that have been either reduced or eliminated due to these events. Habitat fragmentation due to human development is an ever-increasing threat to biodiversity, and habitat corridors are a possible mitigation.