Frog survey enters 8th year: MI

Article Posted: April 25, 2003

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Frog survey enters 8th year

Department of Natural Resources officials today announced the eighth annual statewide Frog and Toad Survey, coordinated by the Natural Heritage Unit of the DNR Wildlife Division.

Frog surveys were initiated in 1988 to increase knowledge of frog and toad abundance and distribution in Michigan at a time when frogs, toads, and other amphibians were declining worldwide. In 1996, a statewide system of permanent survey routes was developed. Each route consists of ten wetland sites, which are visited three times during spring and summer by volunteer observers. At each site, the observer identifies the species present based on calls and makes an estimate of their abundance.

To date, there are more than 400 routes statewide, running through every Michigan county. More than 110 of the routes have existed throughout all seven previous years of the survey.

“It may take a few more years to establish population trends based on these surveys,” said Program Coordinator Lori Sargent. “We are on the verge of having a large, very valuable data set on Michigan’s frog populations. Every year, we have additional routes, so the continued success of the program is dependent on strong volunteer support.”

This project is supported with funding from the Nongame Fish and Wildlife Fund and Federal State Wildlife Grant funds. You can support important work on endangered, threatened, and nongame species by looking for the loon at your Secretary of State office and purchasing a Wildlife Habitat License Plate. For more information on the Frog and Toad Survey or to get information on other projects supported by the Nongame Fish and Wildlife Fund, visit the DNR web site at .

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