| 000 | 00000cam 2200000za 4500 |
| 001 | 9.855446 |
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| 003 | CaOODSP |
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| 005 | 20241203113642 |
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| 007 | cr ||||||||||| |
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| 008 | 180418s1974 onca|||#o f00| 0 eng d |
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| 040 | |aCaOODSP|beng |
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| 041 | |aeng|bfre |
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| 043 | |an-cn--- |
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| 086 | 1 |aCW69-1/20E-PDF |
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| 245 | 00|aDevelopment of a simulation model of mallard duck populations |h[electronic resource] / |cby Carl J. Walters ... [et al.]. |
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| 260 | |aOttawa : |bCanadian Wildlife Service, |cc1974. |
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| 300 | |a35 p. : |bill. |
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| 490 | 1 |aOccasional paper ; |vno. 20 |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 504 | |aIncludes bibliographical references. |
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| 520 | 3 |a"This paper describes an attempt to develop a comprehensive computer model of Mallard Duck populations in North America. The model considers major population processes and spatial distribution patterns in an attempt to predict long term population trends. Though predictions of the model have been questionable, it has provided a valuable means to help identify critical data needs for future work"--Abstract. |
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| 546 | |aIncludes abstract in French. |
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| 692 | 07|2gccst|aBirds |
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| 692 | 07|2gccst|aPopulation |
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| 692 | 07|2gccst|aModelling |
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| 700 | 1 |aWalters, Carl J.,|d1944- |
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| 710 | 1 |aCanada. |bEnvironment Canada. |
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| 710 | 2 |aCanadian Wildlife Service. |
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| 830 | #0|aOccasional paper (Canadian Wildlife Service)|vno. 20|w(CaOODSP)9.504780 |
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| 856 | 40|qPDF|s2.01 MB|uhttps://publications.gc.ca/collections/collection_2018/eccc/CW69-1-20-eng.pdf |
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