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Long-term Declines in Nest Success of Prairie Ducks

Appendix A


Published and unpublished sources of nest success data for 5 species of upland-nesting ducks in the Prairie Pothole Region. 1935-92. Unpooled refers to nest success estimates that were kept separate for each species at each site in each year. Pooled refers to nest success estimates pooled for all species present at each site each year. Note that the pooled dataset may include more species and more nests. The number of estimates of nest success (n) and the number of nests on which each study was based are given. Data from islands or predator control sites were not included. NWA = national wildlife area, WMD = wetland management district, WPA = waterfowl production area.

Reference Year(s) of study Study Site Unpooled Pooled Estimator used
n No. nests n No. nests
Adams, G. D., unpubl. 1981-82 Thickwood Hills, SK 3 54 2 63 Mayfield
1989-90 2 49 2 49 Mayfield
Clark et al. 1991 1980-81 St. Denis, NWA, Sask. 6 153 2 153 Mayfield
1983-85 11 281 3 281 Mayfield
Clark, R. G., unpubl. data 1990 Elstow, Sask.     1 32 Mayfield
1990 Yorkton, Sask. 3 39 1 78 Green
Cowardin et al. 1985 1977-80 N.D. 4 129 4 129 Mayfield
Duebbert and Kantrud 1974 1971 S.D. (2 sites)     2 245 Green
Duebbert and Lokemoen 1976 1971-73 Edmunds County, S.D. 12 544 3 569 Green
Duebbert and Lokemoen 1980 1973-74 Hosmer, S.D. 5 167 2 180 Green
Dzubin and Gollop 1972 1952-55 Roseneath, Manit. 4 213 4 213 Green
1956-58 Kindersley, Sask. 3 611 3 611 Green
Furniss 1938 1935, 1937 Prince Albert, Sask. 2 33 2 33 Green
Greenwood 1986 1979 Gaier WPA, N.D.     1 204 Mayfield
1979 Haglund WPA, N.D.     1 68 Mayfield
1980 Crystal Springs WPA, N.D.     1 73 Mayfield
1980 Haglund, N.D.     1 71 Mayfield
1980-81 Ackerson, WPA, N.D.     2 110 Mayfield
1981 Jamestown College WPA, N.D.     1 91 Mayfield
Greenwood et al. 1990 1982-84 Ackerson WPA, N.D.     3 96 Mayfield
1982-85 Gaier WPA, N.D.     4 87 Mayfield
1983-84 Jamestown College WPA, N.D.     2 35 Mayfield
1984 Hertel WPA, N.D.     1 13 Mayfield
Greenwood, R. J., USFWS, pers. comm. 1982 Tichfield, Sask. 5 91 1 91 Mayfield
1982-85 Hanley, Sask. 9 212 4 212 Mayfield
1982-85 Shamrock, Sask. 14 838 4 884 Mayfield
1983 Cartwright, Manit. 2 32 1 32 Mayfield
1983 Goodwater, Sask. 5 265 1 281 Mayfield
1983 Holden, Alta. 4 158 1 158 Mayfield
1983-84 Ceylon, Sask. 9 718 2 774 Mayfield
1983-84 Hay Lakes, Alta. 8 324 2 324 Mayfield
1983-84 Moorepark, Manit. 8 257 2 257 Mayfield
1984-85 Craik, Sask. 3 39 2 39 Mayfield
1984-85 Denzil, Sask. 7 189 2 189 Mayfield
1984-85 Leask, Sask. 7 225 2 225 Mayfield
1984-85 Penhold, Alta. 2 66 2 66 Mayfield
1985 Earl Grey, Sask. 4 123 1 123 Mayfield
1984-85 Inchkeith, Sask. 4 67 2 67 Mayfield
1985 Gayford, Alta. 4 57 1 57 Mayfield
1985 Yorkton, Sask. 3 144 1 156 Mayfield
Hawkins 1949 1949 Southwestern Manit. 3 132 1 150 Green
Hawkins 1950 1950 Southwestern Manit. 2 51 1 57 Green
Higgins et al. 1992 1966-81 Woodworth, N.D.     16 3,517 Mayfield
Howard et al. 1954 1953 Elkhorn Area, Manit. 1 63 1 89 Green
Johnson et al. 1988a 1983 Streeter, N.D. 4 115 1 124 Mayfield
1983 Sharon, N.D. 1 42 1 56 Mayfield
1983 Plaza, N.D. 5 193 1 198 Mayfield
1983 Madison, S.D. 2 68 1 78 Mayfield
1983 Parkston, S.D. 2 63 1 73 Mayfield
Kaiser 1976 1974 Madison WMD, S.D. 1 61 1 81 Green
1974 Lake Andes WMD, S.D. 1 137 1 167 Green
Kalmbach 1938 1936 Lower Souris Refuge, N.D. 5 303 1 326 Green
Kiel 1951 1949-51 Newdale-Erickson Area, Manit.     3 101 Green
Kiel 1953 1952 Newdale-Erickson     1 48 Green
Kiel 1954 1953 Newdale-Erickson 3 238 1 238 Green
Lokemoen et al. 1982 1978-80 Gaub WPA, N.D.     3 64 Mayfield
Oetting and Dixon 1975 1974 Oak Hammock Marsh, Manit. 4 223 1 224 Green
Page and Cassel 1971 1969 Railway ROW, N.D.     1 80 Green
Reeves et al. 1956 1955 Success, Sask. 2 130 1 138 Green
Simpson 1988 1985 S.D. (11 sites) 6 132 11 228 Mayfield
Smith 1954 1953 Lousana, Alta 2 24 1 30 Green
Vermillion, Alta. 1 50 1 61 Green
Smith 1956 1955 Lousana, Alta. 3 65 1 73 Green
Vermillion, Alta. 1 35 1 49 Green
Stoudt 1953 1952 Redvers, Sask. 2 94 1 109 Green
Stoudt 1971 1956-60 Redvers, Sask. 12 1,324 5 1,347 Green
1964 2 24 1 26 Green
Stoudt and Buller 1954 1953 Redvers, Sask. 3 287 1 299 Green
Stoudt and Stinnett 1955 1954 Redvers, Sask. 4 334 1 353 Green
Stoudt and Yeager 1956 1955 Redvers, Sask. 3 294 1 313 Green
Taylor, P. S., CWS, pers. comm. 1992 Last Mt. NWA, Sask.     1 389 Green
Wright, M., DU (Can.), unpubl. data 1972 Colonsay, Sask. 4 86 1 91 Green
Total     232 10,646 143 163,513  

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