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Description: |
iii, 21 pages : illustrations ; 27 cm |
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Bibliography Note: |
Includes bibliographical references (page 13). |
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Summary, Etc. Note: |
Abstract: Experimental surveys of waterfowl breeding populations in eastern Canada have been conducted intermittently since 1949 to develop a procedure for making reliable estimates of breeding populations and production of black ducks and Canada geese in this region. This report reviews in detail the black duck breeding population surveys. The vastness of the breeding range precludes complete coverage; even the amount of sampling required for sound predictions is a major consideration. Several approaches to stratified sampling failed to produce a useful plan. Variations in phenology within the survey area appear to be a major factor in developing a reliable sampling plan; a method that takes these variations into account is presented. Analysis of data from 4 years gave trends in breeding population size that agreed generally with trends in corresponding winter population data; previous interpretation methods did not produce this agreement. |
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Other Forms: |
Also available via the World Wide Web. |
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Additional Physical Forms: |
Online version: Chamberlain, E. Burnham (Edward Burnham), 1895-1986. Problems in aerial surveys of waterfowl in eastern Canada (OCoLC)1290812782 |
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Elect. Loc./Access: |
HathiTrust Digital Library http://catalog.hathitrust.org/api/volumes/oclc/503170937.html |
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Name Added Entry: |
Kaczynski, Charles F., author. |