Northern Prairie Wildlife Research Center
| Table 10. Use (%) of different wetland sizes (ha) by dabbling and diving duck pairs in the Waubay study area, Day County, South Dakota, 1993, 1950-1953. | ||||||||||||||||
| Wetland Size (ha) |
Blue-wing teal (n=948) |
Mallard (n=429) |
Gadwall (n=230) |
Northern Shoveler (n=109) |
Northern Pintail (n=85) |
Redhead (n=247) |
Ruddy duck (n=76) |
Canvasback (n=16) |
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| 0.00 - 0.04 | 0.3 | (0.3)a | 0.5 | (0.5) | 0.4 | (0.6) | 0.9 | (0.9) | 0.0 | (0.3) | 0.0 | (0.0) | 0.0 | (0.0) | 0.0 | (0.0) |
| 0.04 - 0.12 | 3.3 | (2.8) | 9.1 | (3.9) | 6.5 | (3.8) | 3.7 | (2.2) | 16.5 | (5.0) | 0.4 | (0.0) | 0.0 | (0.0) | 0.0 | (0.0) |
| 0.12 - 0.36 | 16.0 | (5.8) | 11.0 | (7.5) | 16.1 | (6.1) | 17.4 | (4.9) | 20.0 | (10.1) | 3.6 | (2.2) | 0.0 | (0.0) | 0.0 | (0.0) |
| 0.36 - 0.76 | 13.0 | (10.2) | 9.8 | (9.7) | 10.4 | (8.7) | 11.9 | (7.6) | 8.2 | (9.1) | 4.0 | (2.7) | 0.0 | (0.0) | 0.0 | (5.0) |
| 0.76 - 1.98 | 23.6 | (20.7) | 19.6 | (18.2) | 23.9 | (19.5) | 18.3 | (21.1) | 17.6 | (17.4) | 27.1 | (6.5) | 11.8 | (10.2) | 12.5 | (10.0) |
| 1.98 - 4.81 | 16.4 | (25.3) | 17.0 | (25.3) | 14.8 | (25.4) | 20.2 | (24.7) | 15.3 | (23.2) | 20.2 | (26.1) | 9.2 | (29.9) | 0.0 | (25.0) |
| size > 4.81 | 27.4 | (34.8) | 33.1 | (34.8) | 27.8 | (36.0) | 27.5 | (38.6) | 22.4 | (34.9) | 44.5 | (62.5) | 78.9 | (59.9) | 87.5 | (60.0) |
| a Values in ( ) are average % use of wetland sizes for 1950-53. | ||||||||||||||||
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/birds/waubay/tab10.htm
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