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Implications of Marsh Size and Isolation for Marsh Bird Management

Mike Brown and James J. Dinsmore
The Journal of Wildlife Management
Vol. 50, No. 3 (Jul., 1986), pp. 392-397
Published by: Wiley on behalf of the Wildlife Society
DOI: 10.2307/3801093
Stable URL: http://www.jstor.org/stable/3801093
Page Count: 6
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Implications of Marsh Size and Isolation for Marsh Bird Management
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Abstract

The number of breeding bird species in 30 Iowa prairie marshes ranged from 2 to 17/marsh during 1983 and 1984. All marshes were similar in physical characteristics, except for size and isolation from other marshes. A 2-variable regression model containing size and isolation accounted for 75% of the variation in species richness. Ten of 25 species did not occur in marshes <5 ha. Species richness often was greater in wetland complexes than in larger isolated marshes. Marsh size and isolation are important management considerations.

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