Northern Prairie Wildlife Research Center
| Table 21. Use (%) of different wetland sizes (ha) by broods in the Waubay study area, Day County, South Dakota, 1992-1993. | ||||
| Wetland size (Hectares) | Dabbling Duck Species | |||
| Blue-wing teal (n=87) |
Mallard (n=49) |
Gadwall (n=42) |
Northern shoveler (n=17) |
|
| < 0.20 | 9.2 | 6.1 | 2.4 | 17.6 |
| 0.20 - 0.40 | 6.9 | 6.1 | 2.4 | 17.6 |
| 0.40 - 0.81 | 18.4 | 6.1 | 2.4 | 5.9 |
| 0.81 - 1.21 | 8.0 | 6.1 | 4.8 | 17.6 |
| 1.21 - 1.61 | 6.9 | 2.0 | 4.8 | 5.9 |
| 1.61 - 2.02 | 6.9 | 12.2 | 11.9 | 5.9 |
| 2.02 - 4.05 | 4.6 | 8.2 | 11.9 | 11.8 |
| > 4.05 | 39.1 | 53.1 | 59.5 | 17.6 |
| Total | 100.0 | 99.9 | 100.1 | 99.9 |
| Wetland size (Hectares) | Diving Duck Species | |||
| Redhead (n=28) |
Ruddy duck (n=24) |
Canvasback (n=13) |
||
| < 0.20 | 0.0 | 0.0 | 7.7 | |
| 0.20 - 0.40 | 0.0 | 0.0 | 0.0 | |
| 0.40 - 0.81 | 3.6 | 0.0 | 0.0 | |
| 0.81 - 1.21 | 3.6 | 0.0 | 15.4 | |
| 1.21 - 1.61 | 0.0 | 0.0 | 0.0 | |
| 1.61 - 2.02 | 7.1 | 4.2 | 7.7 | |
| 2.02 - 4.05 | 3.6 | 4.2 | 0.0 | |
| 4.04 - 6.07 | 3.6 | 0.0 | 7.7 | |
| 6.07 - 8.09 | 21.4 | 33.3 | 7.7 | |
| > 8.09 | 57.1 | 58.3 | 53.8 | |
| Total | 100.0 | 100.0 | 100.0 | |
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/birds/waubay/tab21.htm
Page Contact Information: Webmaster
Page Last Modified: Friday, 01-Feb-2013 20:04:06 EST
Menlo Park, CA [caww54]
