Title page for ETD etd-06062008-163934


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.
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