Alwynne B. Beaudoin - Lake File

Lake Louise (Man)

Location: Manitoba, Canada Latitude (N): 49.03° Longitude (W): 97.23°
Site notes:
Brooks, G. R., and A. Grenier 2001
Late Holocene Pollen Stratigraphy of Lake Louise, Manitoba. Current Research 2001-B1. Geological Survey of Canada, Ottawa, Ontario, Canada 14 pp.
Site discussed: Lake Louise. Part of a project to investigate the history of flooding of the Red River, by looking at sediments in oxbows or channel scars close to river. Site is shallow perennial lake, eutrophic for part of year. Receives floodwaters periodically. Base of record dates to around 1600 yr BP. Zone 1 (lower) dominated by NAP, with some oak and pine pollen. Rather than oak savannah, this may represent more wooded vegetation in moister habitats near river and lake. Represents vegetation prior to EuroCanadian incursion. Zone 2 (30 cm to surface) shows increase in NAP, especially grass and Ambrosia pollen. Probably represents land clearance and disturbance. Dates back to 19th century, though greater precision is not possible. Zone exhibits a greatly increased sedimentation rate. Some sediment may be from agricultural disturbance, some may be from Red River high flows. Report is available only on-line as a PDF file.

Medioli, B. E., A. Dixit, J. P. Smol, T. W. Anderson, and S. M. Burbridge 2005
Paleolimnological Evidence of Terrestrial and Lacustrine Environmental Change in Response to European Settlement of the Red River Valley, Manitoba and North Dakota. Géographie physique et Quaternaire 59(2-3):263-275 [Volume published 2007].
AEU SCI G 1 R452 Sites discussed: Lake Louise (Manitoba), Horseshoe Lake (Manitoba), Salt Lake. Indicators discussed: pollen, diatoms, and thecamoebians.

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