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Full-Text Articles in Aquaculture and Fisheries
Roadside Bias In Point Count Surveys At Arrowwood National Wildlife Refuge, North Dakota, J. Scott Dieni, Paulette Sherr
Roadside Bias In Point Count Surveys At Arrowwood National Wildlife Refuge, North Dakota, J. Scott Dieni, Paulette Sherr
United States Fish and Wildlife: Staff Publications
We investigated potential biases of using roadside point counts to sample breeding bird populations in the northern mixed··grass prairie. In 1995, a breeding bird inventory and monitoring program was initiated at Arrowwood National Wildlife Refuge, east-central North Dakota. Surveys were conducted annually through 1998 from an extensive point count array permanently located across the refuge (n = 162). Fifty-nine percent of the point counts were established directly on tertiary dirt roads and trails, while the remaining were interspersed at randomly selected distances of 100, 200, 300, and 400 m away from roads. Roadside point counts commonly consisted of a mosaic …