We evaluated changes in breeding bird density and shifts in territory distribution with respect to clear cutting and timber stand improvement (TSI) of even-aged stands on >300 ha experimental management units as part of the Missouri Ozark Forest Ecosystem Project. After one harvest entry, clear cutting had positive effects on density of indigo bunting (Passerina cyanea), prairie warbler (Dendroica discolor), and yellow-breasted chat (Icteria virens) and negative effects on density of Acadian flycatcher (Empidonax virescens), ovenbird (Seiurus aurocapilla), and worm-eating warbler (Helmitheros vermivorus). In buffer regions within 100 m of clearcuts, indigo bunting, hooded warbler (Wilsonia citrina), wood thrush (Hylocichila mustelina), and Kentucky warbler (Oporornis formosus) densities increased and ovenbird density decreased. Breeding bird densities did not change in interior regions >100 m from clearcuts except for a small increase for wood thrush. Breeding Acadian flycatcher and ovenbird showed greater use of stands not treated with TSI. We recommend combining adjoining stands to keep clearcut sizes between 8 ha and 13 ha to reduce negative effects on ovenbirds by cutting. We suggest a 7-year offset between the timing of clear cutting and TSI to reduce their combined effects on ovenbird.
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1 August 2007
Bird Response to Clear Cutting in Missouri Ozark Forests
MICHAEL J. WALLENDORF,
PAUL A. PORNELUZI,
WENDY K. GRAM,
RICHARD L. CLAWSON,
JOHN FAABORG
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Journal of Wildlife Management
Vol. 71 • No. 6
August 2007
Vol. 71 • No. 6
August 2007
breeding birds
clearcut
early successional birds
even-aged forest management
mature forest-dwelling birds
Missouri Ozark Forest Ecosystem Project
timber stand improvement