CGRG Bibliography of Canadian Geomorphology
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Author : Begg, C.S.; Archibold, O.W.; and Delanoy, L .
Date : 1998
Title : Preliminary investigation into the effects of water-level control on seedling recruitment in riparian Cottonwoods, Populus deltoides, on the South Saskatchewan River
Publication : Canadian Field Naturalist
Issue : 112(4) :
Page(s) : 684-693.
Abstract
The demographic characteristics of riparian Plains Cottonwood (Populus deltoides Marsh.) stands along the North and South Saskatchewan Rivers near Saskatoon were compared to determine if the operation of the Gardiner Dam on the South Saskatchewan River has affected establishment of this species. Prior to construction mean river discharge upstream and downstream from the dam was 1281 and 1498 m(3) s(-1) respectively; this subsequently decreased to 945 and 608 m(3) s(-1) respectively. Similarly, sediment loads in the South Saskatchewan River for the period 1986-1996 averaged 143.9 mg 1(-1) above the dam compared to only 12.9 mg 1-1 downstream. This change in hydrological regime appears to have reduced the recruitment of cottonwoods along the South Saskatchewan River downstream from the Gardiner Dam compared to the North Saskatchewan River which is regulated only near its source.
Bibliography of Canadian Geomorphology