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Response of Songbirds to Glyphosate-Induced Habitat Changes on Clearcuts
David J. Santillo, Patrick W. Brown and David M. Leslie, Jr.
The Journal of Wildlife Management
Vol. 53, No. 1 (Jan., 1989), pp. 64-71
Stable URL: http://www.jstor.org/stable/3801307
Page Count: 8
You can always find the topics here!Topics: Herbicides, Songbirds, Birds, Vegetation, Bird songs, Habitat destruction, Leaves, Aviculture, Sparrows, Hardwoods
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We examined breeding bird populations and habitats on glyphosate (nitrogen-phosphonomethyl glycine) (Roundup, Monsanto, St. Louis, Mo.)-treated and untreated clearcuts in north-central Maine. Treatment of clearcuts with glyphosate herbicide reduced the complexity of vegetation through 3 years post-treatment compared to untreated clearcuts. Total numbers of birds, common yellowthroats (Geothlypis trichas), Lincoln's sparrows (Melospiza lincolnii), and alder flycatchers (Empidonax alnorum) were less abundant (P < 0.05) on treated clearcuts than on untreated clearcuts. Songbird densities were correlated with habitat complexity, especially hardwood regeneration, foliage height diversity (FHD), and vegetation height. Leaving untreated patches of vegetation and staggering herbicide treatments on large clearcuts will maintain bird populations similar to those on untreated clearcuts.
The Journal of Wildlife Management © 1989 Wiley