I used automated acoustic recording devices (Dorcas and Peterson 1994, Kerfoot 1996), or “frog-loggers,” for call surveys of frogs and toads at lakes in northeastern Alberta in 1997 and 1998. The units greatly reduced field time, but their use was problematic. Bears and other wildlife repeatedly disturbed the devices; I could not effectively assess numbers of calling males; and quiet or rare species were most likely underestimated or missed. The most appropriate use for automated recording units is to determine presence/ not-found and diel and seasonal occurrence of calling behaviour. However, even for this kind of work, the devices are best used in conjunction with other survey techniques.
Constible, Juanita M.. 1999. How Useful is Automated Acoustic Recording in Amphibian Biomonitoring Programs? (in Proc. Conference Biology & Management of Species and Habitats at Risk). Ministry of Environment, Lands and Parks. Proceedings - Conference Biology & Management. Vol. 1
Topic: Species and Ecosystems at Risk
Keywords: amphibian, automatic recorders, frogs, toads, population surveys
Other Identifier: University College of the Cariboo
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