00000nam 2200000za 4500 9.850007 CaOODSP 20241203113641 cr ||||||||||| 180115s1985 oncd||||o f000 0 eng d CaOODSP eng n-cn--- CW69-9/156E-PDF Sugden, Lawson G. Prediction of duck nest survival in conventional and zero-tilled stubble fields [electronic resource] / by Lawson G. Sugden and Gerard W. Beyersbergen. [Ottawa] : Canadian Wildlife Service, 1985. 6 p. : charts Progress notes ; no. 156 "March 1985." Digitized edition from print [produced by Environment and Climate Change Canada]. Issued also in French under title: Prévision relative à la préservation des nids de canards sur les terres en chaume cultivées de façon traditionnelle ou par semis direct. Includes bibliographical references. "Survival of duck nests in stubble fields under conventional tillage as well as zero-tillage was predicted by comparing the chronology of stubble cultivation, spring seeding, and nest initiation dates"--Abstract. gccst Aquatic birds gccst Habitats Ducks Beyersbergen, Gerard W. Canada. Environment Canada. Canadian Wildlife Service. Prévision relative à la préservation des nids de canards sur les terres en chaume cultivées de façon traditionnelle ou par semis direct (CaOODSP)9.860699 Progress notes (Canadian Wildlife Service) no. 156 (CaOODSP)9.504439 PDF 267 KB https://publications.gc.ca/collections/collection_2018/eccc/CW69-9-156-eng.pdf