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    Author(s): D.W. Thomas; S.D. West
    Date: 1989
    Source: Gen. Tech. Rep. PNW-GTR-243. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 20 p. (Ruggiero, L.F.; Carey, A.B., tech. eds.; Wildlife-habitat relationships: sampling procedures for Pacific Northwest vertebrates
    Publication Series: General Technical Report (GTR)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (2.3 MB)

    Description

    Bats represent the second most diverse group of mammals inhabiting the western slopes of the Cascade Range in southern Washington and the Oregon Coast Range. Bat populations may well be sensitive to changes in forest age, structure, or distribution, but their nocturnal habits and high mobility render the study of the habitat requirements of bats problematical. Unlike most other groups of vertebrates, bats are difficult to either observe or capture, and survey methods are poorly known. This paper reviews techniques for surveying bat populations and presents the methodology used in the Old-Growth Forest Wildlife Habitat Program in the Pacific Northwest.

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    Citation

    Thomas, D.W.; West, S.D. 1989. Sampling methods for bats. Gen. Tech. Rep. PNW-GTR-243. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 20 p. (Ruggiero, L.F.; Carey, A.B., tech. eds.; Wildlife-habitat relationships: sampling procedures for Pacific Northwest vertebrates

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    Keywords

    Bats, Chiroptera, distribution, abundance, habitat use, surveys, sampling methods, ultrasonic detection

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