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RECORD NUMBER: 187 OF 636

OLS Field Name OLS Field Data
Main Title Criteria for Estimating Limiting Nutrients in Natural Streams.
Author O'Shaughness, James. C. ; McDonnel, Archie J. ;
CORP Author Pennsylvania State Univ., University Park. Inst. for Research on Land and Water Resources.
Year Published 1973
Report Number DI-14-31-0001-4038; OWRR A-020-PA; 06105,; A-020-PA(2)
Stock Number PB-230 705
Additional Subjects Aquatic plants ; Algae ; Nutrients ; Absorption(Biology) ; Phosphorus ; Nitrogen ; Water pollution ; Plant growth ; Bioassay ; Sediments ; Limiting factors ; Eutrophication
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NTIS  PB-230 705 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 95p
Abstract The aquatic macrophytes Elodea canadensis and Potamogeton crispus, Callitriche sp.; and the algae Cladophora sp., Nitella flexilis, Oscillatoria sp., and Microspora sp. were tested for their ammonium nitrogen absorption rate, alkaline phosphatase enzyme activity, extractable surplus phosphorus content, and nitrogen and phosphorus tissue content. Comparisons of the nutritional level of the test species were made with corresponding levels of nitrogen and phosphorus monitored in streamwater, adsorbed on stream sediments, and in the interstitial water of the sediments. Corresponding laboratory cultures were maintained with media sufficient or depleted in nutrients. Study sites selected included stream segments receiving both natural and man derived inputs of nutrients and included levels of phosphorus ranging from low baseline concentrations to high levels imparted by discharges from secondary sewage treatment plant effluents.
NTIS Title Notes Research publication no. 75.
PUB Date Free Form Dec 73,
Category Codes 13B; 6C; 68D; 48G
NTIS Prices PC A05/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326586403
Origin NTIS
Type CAT