@mastersthesis {47485,
	title = {The role of silica depletion in the eutrophication of Lac La Biche, Alberta},
	volume = {Biological Sciences},
	year = {2006},
	pages = {75},
	address = {University of Alberta},
	abstract = {Eutrophication of aquatic systems can induce silica (Si) depletion through enhanced production and sedimentation of diatoms. This may shift the phytoplankton assemblage to include increasing proportions of non-siliceous taxa such as potentially nuisance Cyanobacteria. I examined the role of Si depletion in the eutrophication of Lac la Biche, a large lake in northern Alberta. Paleolimnological analyses indicate that while Lac la Biche has undergone eutrophication since the mid-20 th century, there is no evidence for either Si depletion or Si mediated shifts in the relative proportion of diatoms and Cyanobacteria. However, I show through nutrient amendment experiments that Si depletion can be induced seasonally under specific nutrient regimes. Further, Si amendment significantly increased the proportion of diatoms relative to Cyanobacteria. I conclude that with ongoing eutrophication and anticipated declines in Si loading to aquatic systems associated with drought and climate warming, Si depletion may become increasingly important in structuring phytoplankton communities.},
	url = {http://search.proquest.com/docview/304957466},
	author = {Crowe, Angela Marie}
}
