Waterfowl Production on the Woodworth Station
in South-central North Dakota, 1965-1981

Table 39. Linear regression values between broods per year
and percent of wet basins during 1-15 May duck counts,
Woodworth Study Area, 1965-81.


Table 39. Linear regression values between broods per year and percent of wet basins during 1-15 May duck counts, Woodworth Study Area, 1965-81.
Species r-valuesa
Dabbling ducks
Mallard 0.0363
Gadwall 0.1197
Northern pintail 0.5066
Green-winged teal 0.4720
Blue-winged teal 0.7035
Northern shoveler 0.6823
American wigeon -0.0374
Total dabbling ducks 0.6226
Diving ducks
Redhead 0.0631
Canvasback -0.0548
Lesser scaup -0.1654
Ruddy duck 0.5048
Ring-necked duck 0.2851
Total diving ducks 0.2814
Total broods 0.6417
ar-values > 0.48 were significant, 16df.


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