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Summer Status of the Endangered Indiana Bat in Iowa

Bryon K. Clark, John B. Bowles and Brenda S. Clark
The American Midland Naturalist
Vol. 118, No. 1 (Jul., 1987), pp. 32-39
DOI: 10.2307/2425625
Stable URL: http://www.jstor.org/stable/2425625
Page Count: 8
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Summer Status of the Endangered Indiana Bat in Iowa
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Abstract

The summer status and distribution of the endangered Indiana bat (Myotis sodalis) in Iowa were investigated during the summers of 1980 through 1983. Sixty-seven M. sodalis were netted, 5.6% of the 1199 bats captured. Indiana bats were taken at nine study sites in six southern Iowa counties, but none was captured at 23 sites in 10 central and northern counties even though these sites were selected because of their physiognomic and vegetational similarity to sites at which bats occurred. Reproductively active females or newly volant juvenile M. sodalis were taken at each southern site. Results suggest that the northwestern range limits of this species are influenced by climatic factors and distance to major hibernacula, whereas habitat availability and competition may be important in delimiting local patterns of distribution and abundance.

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