Abstract
Monitoring wildlife populations is a challenging task for scientists and resource managers. We assessed 4 methods for monitoring population size of barking frogs (Eleutherodactylus augusti) in southern Arizona: mark-recapture, distance sampling, call counts, and visual encounter surveys. Because of the ecology and behavior of this species, all methods produced data that contained too much variability and bias to be useful for monitoring population size. For cryptic species such as barking frogs, monitoring programs might be more effective if they focus on parameters other than population size.
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