00000nam 2200000za 4500 9.613930 CaOODSP 20240527135427 ta 150406|1999||||xxc||||| f|0| 0 eng d 0-662-25913-0 0831-6481 CaOODSP eng n-cn--- CW69-5/290E Canadian Wildlife Service. Re-examination of the relationship between constructed impoundment age and waterbird use / by Josette L. Maillet, Collin M. MacKinnon and J. Bruce Pollard. Sackville - New Brunswick : Environment Canada. 1999. v, 30p. : figs. ; 28 cm. Technical report series 0831-6481 290 "The relationship between impoundment age and waterfowl and wetland obligate bird use of 32 selected freshwater impoundments in the Chignetoc 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. Bibliography. The relationship between impoundment age and waterfowl and wetland obligate bird use of 32 selected freshwater impoundments in the Chignetoc 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 electronic format. Résumés en français Ring binding 00-03 2000-01-21 Wetlands gcpds Birds gcpds Conservation areas gcpds Maillet, Josette L. MacKinnon, Collin M. Pollard, J. Bruce Re-examination of the relationship between constructed impoundment age and waterbird use (CaOODSP)9.857947 Technical report series, 0831-6481 290 (CaOODSP)9.514492