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Distribution and Abundance of Predators that Affect
Duck Production: Prairie Pothole Region

Data Sources


Data on the distribution and abundance of predator species were collected during 1983-88 from 33 study areas throughout the prairie pothole region. The data were collected in conjunction with three studies of duck recruitment: (1) stabilized regulations duck recruitment study (stabilized regulations study) in Alberta, Manitoba, and Saskatchewan (Greenwood et al. 1987); (2) Central Flyway duck recruitment study (Central Flyway study) in Montana, North Dakota, and South Dakota (Johnson et al. 1987); and (3) small unit management study in Minnesota and North Dakota (project document on file at the Northern Prairie Wildlife Research Center).

The stabilized regulations study was conducted during 1982-85, but surveys of predators were not initiated until 1983. Predators were surveyed 1-3 years in 16 study areas: in 4 in Alberta, in 2 in Manitoba, and in 10 in Saskatchewan. The surveys were conducted in 8 areas in 1983, in 10 areas in 1984, and in 10 areas in 1985 (Appendix Table 1).

The Central Flyway study, a companion investigation to the stabilized regulations study, was conducted in nine study areas in the three states during 1983. Predators were surveyed in eight of those study areas: in two in Montana, in three in North Dakota, and in three in South Dakota (Appendix Table 1).

The small unit management study began in 1987 and was conducted in nine study areas: in three in Minnesota and in six in North Dakota (Appendix Table 1). Data from 1987 and 1988 are included in this report. Predators were surveyed in six of the small unit management study areas in 1987 (in two in Minnesota and in four in North Dakota) and in all nine study areas in 1988.


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