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000
| 02663cam 2200409za 4500 |
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| 001 | 9.857767 |
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| 003 | CaOODSP |
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| 005 | 20221107155830 |
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| 007 | cr ||||||||||| |
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| 008 | 180615s1997 oncd ob f000 0 eng d |
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| 020 | |z0662257960 |
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| 022 | |z0831-6481 |
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| 040 | |aCaOODSP|beng |
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| 041 | |aeng|bfre |
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| 043 | |an-cn-on |
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| 086 | 1 |aCW69-5/280E-PDF|zCW69-5/280E |
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| 100 | 1 |aFreemark, K. E. |
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| 245 | 10|aEffects of different habitats versus agricultural practices on farmland birds in Ontario |h[electronic resource] / |cKathryn E. Freemark, Myriam Csizy. |
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| 260 | |aOttawa : |bCanadian Wildlife Service, Headquarters, |c1997. |
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| 300 | |aiv, 92 p. : |bcharts. |
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| 490 | 1 |aTechnical report series ; |vno. 280 |
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| 500 | |aImperfect copy: cover and verso of cover are wanting. |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 504 | |aIncludes bibliographical references (p. 20-24). |
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| 520 | 3 |a"The extent and intensity of modern agriculture have significant adverse implications for farmland wildlife and their habitats. A comparative field study was conducted on organic farms and conventional (chemical) farms in Ontario to identify important crop and non-crop habitats and agricultural practices for different groups of farmland birds, and to quantify their effects on bird species richness and abundance. Birds were surveyed using 180° point counts from field edges in May and June, 1990, on 20 organic and conventional farms paired geographically tor their similarity in crop and non-crop habitats. A total of 68 species were observed over ail sites, 59 on each farm type. Numbers of species and birds per site averaged 13.9 and 16.9, respectively, for unlimited distance (but still on farm) surveys. Abundance was significantly higher on organic than conventional farms. Data from limited distance surveys (100-m radius semicircle) showed similar patterns between farm types and among bird classes and species"--Abstract, p. i. |
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| 530 | |aIssued also in print format. |
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| 546 | |aIncludes abstract in French. |
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| 693 | 4|aCropping systems--Environmental aspects |
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| 693 | 4|aPasseriformes--Effect of habitat modification on |
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| 693 | 4|aPesticides and wildlife |
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| 693 | 4|aOntario |
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| 700 | 1 |aCsizy, Myriam L., |b1962- |
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| 710 | 1 |aCanada. |bEnvironment Canada. |
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| 710 | 1 |aCanadian Wildlife Service. |bHeadquarters. |
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| 830 | #0|aTechnical report series (Canadian Wildlife Service)|vno. 280.|w(CaOODSP)9.504438 |
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| 856 | 40|qPDF|s4.28 MB|uhttps://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-280-eng.pdf |
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