This report lists 615 species of phytoplankton which have been found in lakes in central and northern Canada at eleven individual locations. Included for each species is a picture, size ranqe, location where it was found ...

Early explorers passing through the Lake Winnipeg watershed occasionally commented on the muddy waters of the lake and the Red River (Ross 1856, p. 9; Palliser's Journals of 1857- 1860 in Spry 1968, p. 11,88,.94; Upham ...

Lake Winnipeg water is usually turbid, and little light penetrates into the lake. Secchi disc visibility varied from 0.1 t 1.0 m in the south basin and 0.5 to 2.6 m in the north basin. Horizontal extinction coefficients ...