00000nam 2200000za 4500 9.857947 CaOODSP 20241203113643 cr ||||||||||| 180620s1999 nkcbd ob f000 0 eng d CaOODSP eng eng fre n-cn-nk CW69-5/290E-PDF Maillet, Josette L. Re-examination of the relationship between constructed impoundment age and waterbird use [electronic resource] / Josette L. Maillet, Colin M. MacKinnon, J. Bruce Pollard. Sackville, N.B. : Canadian Wildlife Service, Atlantic Region, c1999. v, 30 p. : map, charts. Technical report series ; no. 290 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (p. 28-30). "The relationship between impoundment age and waterfowl and wetland obligate bird use of 32 selected freshwater impoundments in the Chignecto border region was examined in 1996. Previous studies have indicated that primary productivity declines with impoundment age after initial flooding. Waterfowl and marshbird productivity was assumed to decline with impoundment age as well, concurrent with the observed decline in nutrient levels. An examination of wetland avifauna use versus age of impoundment was the focus of this study"--Abstract. Issued also in print format. Includes abstract in French. gccst Aquatic birds gccst Habitats Impoundment MacKinnon, Colin Mark, 1959- Pollard, James Bruce, 1957- Canada. Environment Canada. Canadian Wildlife Service. Atlantic Region. Re-examination of the relationship between constructed impoundment age and waterbird use / (CaOODSP)9.613930 Technical report series (Canadian Wildlife Service) no. 290. (CaOODSP)9.504438 PDF 12.54 MB https://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-290-eng.pdf