Study

Bat use of roosting boxes installed under flat-bottom bridges in western Oregon

  • Published source details Arnett E.B. & Hayes J.P. (2000) Bat use of roosting boxes installed under flat-bottom bridges in western Oregon. Wildlife Society Bulletin, 28, 890-894

Actions

This study is summarised as evidence for the following.

Action Category

Provide bat boxes for roosting bats

Action Link
Bat Conservation
  1. Provide bat boxes for roosting bats

    A replicated study in 1996–1998 of 15 river bridges in coniferous forest in Oregon, USA (Arnett & Hayes 2000) found that bats used 13 of 15 (87%) bat boxes installed under 15 flat bottom bridges along five large streams. Within a year of installation, 10 boxes were used by bats. Bats were observed day roosting in five different boxes on 14 occasions (all solitary bats except for one group of eight individuals). Guano was collected from traps beneath 12 different boxes on 1–16 occasions. Wooden boxes (60 cm long x 60 cm wide x 30 cm deep) with eight boards placed inside (12 mm or 19 mm apart) to form crevices were fixed to the underside of the bridges between September 1996 and May 1997. Bridges varied in size (230–475 m width, 11–27 m length, and 3–6 m above the water). Day roosting bats were counted with a spotlight and guano traps were checked during 15 weekly surveys in June–September 1997 and 1998.

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 latest volume: Volume 17

Go to the CE Journal

Subscribe to our newsletter

Please add your details if you are interested in receiving updates from the Conservation Evidence team about new papers, synopses and opportunities.

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