000	02013cam  2200337za 4500
001	9.856997
003	CaOODSP
005	20221107155650
007	cr |||||||||||
008	180528s1991    oncd    o    f00| 0 eng d
040	|aCaOODSP|beng
041	|aeng|bfre
043	|an-cn---
086	1 |aCW69-5/137E-PDF
100	1 |aRogers, Catherine A.
245	12|aA feasibility study comparing birds from organic and conventional (chemical) farms in Canada |h[electronic resource] / |cCatherine A. Rogers, Kathryn E. Freemark.
260	|aOttawa : |bCanadian Wildlife Service, Headquarters, |c1991.
300	|avii, 43 p. : |bcharts.
490	1 |aTechnical report series ; |vno. 137
500	|aDigitized edition from print [produced by Environment and Climate Change Canada].
504	|aIncludes bibliographical references (p. 16-17).
520	3 |a"The study reported here was conducted in 1989 to investigate the feasibility of comparing birds between organic and conventional (chemical) farms in Canada, as a novel approach for assessing these effects. Since then, more extensive field studies have been conducted in Ontario, Saskatchewan and Quebec. The current report provides the background information used to justify the implementation of and specific design for those studies. The preliminary findings reported here, that the use of chemical pesticides and/or fertilizers contribute to a reduction in the number and variety of farmland birds, has been corroborated by analyses of the more extensive sample from Ontario"--Abstract.
546	|aIncludes summary in French.
692	07|2gccst|aBirds
692	07|2gccst|aHabitats
700	1 |aFreemark, K. E.
710	1 |aCanada. |bEnvironment Canada.
710	1 |aCanadian Wildlife Service. |bHeadquarters.
830	#0|aTechnical report series (Canadian Wildlife Service)|vno. 137.|w(CaOODSP)9.504438
856	40|qPDF|s1.87 MB|uhttps://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-137-eng.pdf