Another quantitative measure of bat species activity and sampling intensity considerations for the design of ultrasonic monitoring studies

• Autorzy: Broders H.G.
• Języki publikacji: EN

Abstrakty

EN

To date, much of the research that has used ultrasonic detectors as a tool to address questions on the spatial and temporal distribution of bat species activity have been limited by the lack of a reliable and quantifiable unit of activity, and a poor understanding of sampling intensity required to accurately assess site-specific activity levels. Here it is demonstrated that file size (i.e., bytes) of Anabat-recorded echolocation sequences of the little brown bat (Myotis lucifugus) was highly correlated with the number of calls, and was easily determined, and therefore represents a reliable and quantifiable unit of echolocation activity. Additionally, it is shown that accurate quantification of a site-specific magnitude of M. lucifugus activity may not be possible, even with a sampling intensity of up to 20 nights. As a result, ultrasonic monitoring studies must be designed to minimize the effects of the high variability in bat species activity at a site among nights.

• Wydawca: -
• Czasopismo: Acta Chiropterologica
• Rocznik: 2003
• Tom: 05
• Numer: 2
• Opis fizyczny: p.235-241,fig.,ref.

Twórcy

autor

Broders H.G.

• New Brunswick Cooperative Fish and Wildlife Research Unit, Department of Biology, University of New Brunswick, Fredericton, NB, E3B 6E1, Canada

Bibliografia

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