The book Special Scientific Report--Wildlife 129 was written by author U.S. Fish And Wildlife Service Here you can read free online of Special Scientific Report--Wildlife 129 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Special Scientific Report--Wildlife 129 a good or bad book?
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Western Management Unit . — In 1968, the Western Unit had the lowest BDI of any unit, 27 percent below the Eastern Unit and 46 percent below the Central Unit. All States within this Unit provide dove hunting opportunities. The BDI declined 13.4 percent between 1967 and 1968 (the greatest population decline of any unit), to a level 21.5 percent below the 1958-67 10-year mean. 1/ South Dakota data were included in the nonhunting States subunit. Hunting was permitted for the first time in recent y...ears in 1967, but a change in subunit designation will not be made until 1970. 11 Statistical significance of data, 1967- •68 The procedures employed on the annual call-count survey were designed to detect a statistically significant (p .95) change if the population index changed 20 percent between 2 consecutive years within a management unit (Foote, Peters, and Finkner, 1958). This means that, should a 20 percent change be observed, the chances are only 5 in 100 that no change actually occurred.
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