CGRG Bibliography of Canadian Geomorphology
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Author : Hann, B.J.; and Karrow, P.F.
Date : 1984
Title : Pleistocene paleoecology of the Don and Scarborough Formations, Toronto, Canada, based on cladoceran microfossils at the Don Valley Brickyard.
Publication : Boreas
Issue : 13(4):
Page(s) : 377-391.
Abstract
Cladoceran microfossil evidence has confirmed that a disjunction in environmental conditions existed during deposition of the Donand Scarborough Formations in Toronto,Ontario. Although mean annual temperatures were distinctly warmer during the Don interval than in the Scarbo rough, they were probably similar to the present-day regime. The cladoceran community was almost exclusively composed of littoral species throughout the sequence, suggesting that the deposition site was a shallow-water lentic habitat. Chydorid cladoceran species richness in the Don Formation average four times than in the Scarborough. Past community structure, water depth, and trophic state changes at the site were reconstructed from the proportion of littoral to planktic species, the proportion of sediment- to vegetation-preferring chydorids, and the species diversity and equitability.
Bibliography of Canadian Geomorphology