Waterfowl Production on the Woodworth Station
in South-central North Dakota, 1965-1981
Table 33. Apparent density of upland duck nests (nest per 40.5 ha)
among treatments in habitats by species,
Woodworth Study Area, 1966-81.
Table 33. Apparent density of upland duck nests (nest per 40.5 ha)
among treatments in habitats by species, Woodworth Study Area, 1966-81.
Habitat and treatment |
Ha searched |
Mallard |
Gadwall |
Northern pintail |
Green-winged teal |
Blue-winged teal |
Nortern shoveler |
American wigeon |
Lesser scaup |
Total |
Native prairie |
Burned |
3,279 |
1.20 |
2.27 |
0.60 |
0.10 |
9.26 |
0.73 |
0.23 |
0.25 |
14.65 |
Grazed |
1,273 |
0.57 |
2.51 |
0.70 |
0.45 |
10.49 |
0.60 |
0.10 |
0.32 |
15.70 |
Idle |
902 |
2.24 |
4.39 |
1.17 |
0.85 |
16.14 |
1.17 |
0.45 |
0.31 |
26.73 |
Seeded cover |
Burned |
397 |
2.45 |
5.92 |
1.22 |
0.10 |
10.92 |
1.43 |
0.31 |
0.41 |
22.76 |
Grazed |
48 |
1.69 |
0.85 |
0.85 |
0.0 |
11.86 |
0.85 |
0.0 |
1.69 |
17.80 |
Idle |
1,037 |
7.84 |
9.75 |
4.49 |
0.51 |
19.78 |
2.73 |
0.98 |
0.20 |
46.27 |
Cropland |
Standing crop |
376 |
0.40 |
0.80 |
0.50 |
0.0 |
1.90 |
0.30 |
0.0 |
0.20 |
4.20 |
Stubble |
285 |
0.0 |
0.0 |
0.30 |
0.0 |
0.70 |
0.0 |
0.0 |
0.0 |
1.00 |
Mulched stubble |
75 |
0.50 |
0.50 |
0.0 |
0.0 |
1.60 |
0.0 |
0.0 |
0.0 |
2.70 |
Summer fallow |
85 |
1.30 |
0.0 |
0.90 |
0.0 |
2.60 |
0.0 |
0.0 |
0.40 |
5.20 |
Previous Section -- Table 32.
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