Type of Document	Dissertation
Author	Beaty, Myron H
URN	etd-06062008-163934
Title	Limnological investigations of a natural, subalpine lake in the early stages of eutrophication :Mountain Lake, Giles County, Virginia
Degree	PhD
Department	Biology
Advisory Committee	Advisor Name Title Parker, Bruce C. Committee Chair Hoehn, Robert C. Committee Member Orcutt, David M. Committee Member Parson, Marolyn Committee Member Simmons, George M. Jr. Committee Member
Keywords	ecosystems
Date of Defense	1995-04-01
Availability	unrestricted
Abstract Comprehensive year-round limnological investigations of Mountain Lake, Virginia were conducted from November 1992 through October 1994. Monthly physical, chemical, and biological measurements suggest that this ecosystem has shifted toward a more eutrophic condition. A trend in whole lake mean annual orthophosphate-phosphorus and inorganic nitrogen increases have occurred over the past decade, although primary productivity, cell densities, and chlorophyll a values indicate no consistent trends. Hypolimnetic oxygen deficits, however, have continued to increase over time, and in October 1994 the first measure of anoxic deep water was observed.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access    LD5655.V856_1995.B438.pdf 17.31 Mb 01:20:07 00:41:12 00:36:03 00:18:01 00:01:32 next to an author's name indicates that all files or directories associated with their ETD are accessible from the Virginia Tech campus network only.

If you have questions or technical problems, please Contact DLA.