NPWRC :: Using Landscape Information Approaches to Increase Duck Recruitment in the Prairie Pothole Region

**Table 1.** Baseline regression coefficients and ratios used for estimating breeding duck pair use of wetland basins and riverine wetlands in Stutsman and Wells counties, North Dakota.
Species	Wetland Basin Class	Regression Coefficients		Ratio of pairs per acre
Species	Wetland Basin Class	A	B	Ratio of pairs per acre
Blue-Winged Teal	Temporary		0.19839
	Seasonal		0.47456
	Semi-permanent	0.02539	0.43261
	Lake		0.40138
	Riverine			0.14351
Gadwall	Temporary		0.09920
	Seasonal		0.18353
	Semi-permanent	0.02231	0.17280
	Lake		0.48119
	Riverine			0.03456
Mallard	Temporary		0.18035
	Seasonal		0.19954
	Semi-permanent	0.02405	0.12304
	Lake		0.18309
	Riverine			0.12323
Northern Pintail	Temporary		0.14879
	Seasonal		0.11835
	Semi-permanent	0.00244	0.09415
	Lake		0.15727
	Riverine			0.02780
Northern Shoveler	Temporary		0.05861
	Seasonal		0.12007
	Semi-permanent	0.00287	0.12051
	Lake		0.27698
	Riverine			0.00601

**Table 2.** Estimated distance female ducks will travel from core wetland territory to nesting sites.
Species	Travel Distance in miles (km)	Source
Blue-Winged Teal	1.00 (1.61)	Dzubin (1955)
Gadwall	1.00 (1.61)	Gates (1962)
Mallard	2.25 (3.62)	Dwyer et al. (1979), Lokemoen et al. (1984), Cowardin et al. (1985)
Northern Pintail	2.50 (4.03)	Derrickson (1975)
Northern Shoveler	0.75 (1.21)	Poston (1974)

U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/birds/incduck/tables.htm
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Using Landscape Information Approaches to Increase Duck Recruitment in the Prairie Pothole Region