Are external mine entrance characteristics related to bat use?

  • Published source details Johnson J.B., Wood P.B. & Edwards J.W. (2006) Are external mine entrance characteristics related to bat use? Wildlife Society Bulletin, 34, 1368-1375


This study is summarised as evidence for the following.

Action Category

Install and maintain gates at mine entrances to restrict public access

Action Link
Bat Conservation
  1. Install and maintain gates at mine entrances to restrict public access

    A replicated, site comparison study in 2002 of 24 gated and 23 ungated abandoned mines in West Virginia, USA (Johnson et al. 2006) found that mines with gates had fewer bats captured of nine species than ungated mines, but other mine features were more important than gates for predicting bat presence. The number of bats captured was lower for nine bat species at mine entrances with gates than at mine entrances without gates (data reported as statistical model results). However, mine entrance size, shape and distance to other entrances were more important than gates for predicting the presence of bats (see original paper for detailed results). Twenty-four mine entrances were gated (one had a ‘bat-friendly’ angle-iron design, 23 had a round-bar design with 1.5 cm bars spaced 500 cm horizontally and 200 cm vertically). Twenty-three mine entrances had no gates installed. Bats were captured with harp traps and/or mist nets for one night at 36 of 47 mines in June–July 2002 and at all 47 mines in August–September 2002.

    (Summarised by: Anna Berthinussen)

Output references

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, terrestrial mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust