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ERIC Number: EJ855038
Record Type: Journal
Publication Date: 2006
Pages: 5
Abstractor: As Provided
Reference Count: 6
ISBN: N/A
ISSN: ISSN-1084-6522
Measuring the Components of Ecosystem Respiration in the Headwaters of the White River
Brown, Courtney
NCSSSMST Journal, v12 n1 p11-15 Fall 2006
Sediment oxygen demand (SOD) is the rate that dissolved oxygen leaves the water column in a body of water due to the build-up and decomposition of organic carbons in the sediment. The introduction of organic materials changes the chemistry of streams, and many chemical reactions occurring in bodies of water, with the exception of photosynthesis, require oxygen. Also, when the organic carbons are in the sediment of streambeds, bacteria and other microorganisms go to these organic materials to feed on them and decompose them. The combination of these two events results in an increased oxygen demand and, therefore, a decrease in streams' dissolved oxygen (DO). This increase in the oxygen demand does not only have the potential to be harmful to the aquatic life in these streams, but can also lead to a build-up of total organic carbons (TOCs) where they pour into Beaver Lake, thereby polluting the lake. This pollution can lead to dangerous effects with the potential to be hazardous to one's health, such as disinfection bi-products (DBPs). An experiment was done to measure oxygen dynamics in the sediment and water column of the White River. (Contains 2 figures.)
National Consortium for Specialized Secondary Schools of Mathematics, Science and Technology. 3020 Wards Ferry Road, Lynchburg, VA 24502. Tel: 434-582-1104; Fax: 434-239-4140; e-mail: office@ncsssmst.org; Web site: http://www.ncsssmst.org
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Arkansas