Breeding bird response to partially harvested riparian management zones
2011
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Breeding bird response to partially harvested riparian management zones
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2011
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Abstract
We compared avian communities among three timber harvesting treatments in 45-m wide even-age
riparian management zones (RMZs) placed between upland clearcuts and along one side of first- or
second-order streams in northern Minnesota, USA. The RMZs had three treatments: (1) unharvested, (2)
intermediate residual basal area (RBA) (targeted goal 11.5m2/ha, realized 16.0m2/ha), and (3) low RBA
(targeted goal 5.7m2/ha, realized 8.7m2/ha). Surveys were conducted one year pre-harvest and three
consecutive years post-harvest. There was no change in species richness, diversity, or total abundance
associated with harvest but there were shifts in the types of birds within the community. In particular,
White-throated Sparrows (Zonotrichia albicollis) and Chestnut-sided Warblers (Dendroica pensylvanica)
increased while Ovenbirds (Seiurus aurocapilla) and Red-eyed Vireos (Vireo olivaceus) decreased. The
decline of avian species associated with mature forest in the partially harvested treatments relative
to controls indicates that maintaining an unharvested RMZ adjacent to an upland harvest may aid in
maintaining avian species associated mature forest in Minnesota for at least three years post-harvest.
However, our observations do not reflect reproductive success, which is an area for future research
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Chizinski, Christopher, J.; Peterson, Anna; Hanowski, JoAnn; Blinn, Charles, R.; Vondracek, Bruce; Neimi, Gerald. (2011). Breeding bird response to partially harvested riparian management zones. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/183571.
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