Title:
In Situ Respirometry for the Determination of Autotrophic and Heterotrophic Production in Southeastern Lakes
In Situ Respirometry for the Determination of Autotrophic and Heterotrophic Production in Southeastern Lakes
Author(s)
Porter, Karen G.
Porter, James W.
Saunders, Patricia A.
Parker, Amanda K.
Porter, James W.
Saunders, Patricia A.
Parker, Amanda K.
Advisor(s)
Editor(s)
Hatcher, Kathryn J.
Collections
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Abstract
Representative and accurate measurements
of both autotrophic and heterotrophic production in lakes are essential parts of basic limnological research and lake
monitoring, management, and restoration programs. We describe preliminary data that demonstrate the utility of a continuously recording, in situ respirometer for measuring
diel oxygen production and consumption in lake water.
The data can be used to compute P, R, P vs. I, P vs. T, P/R, P/B and other basic parameters of primary productivity
and heterotrophic activity per unit volume of lake water or per unit chlorophyll. In combination with information on morphometry and water residence time, these volumetric production estimates can be used to compute
integrated whole lake metabolism and production budgets.
In our preliminary studies we found that heterotrophic processes dominated the water column in Lake Oglethorpe, Georgia.
Sponsor
Sponsored and Organized by: U.S. Geological Survey, Georgia Department of Natural Resources, The University of Georgia, Georgia State University, Georgia Institute of Technology
Date Issued
1993-04
Extent
Resource Type
Text
Resource Subtype
Proceedings