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Main Title Phosphorus Bioavailability of Fluvial Sediments Determined by Algal Assays.
Author Ellis, B. K. ; Stanford, J. A. ;
CORP Author Montana Univ., Polson. Flathead Lake Biological Station.;Environmental Research Lab.-Duluth, MN.
Publisher c1988
Year Published 1988
Report Number EPA-R-812071; EPA/600/J-88/459;
Stock Number PB90-147661
Additional Subjects Sediments ; Banks(Waterways) ; Flathead Lake ; Phosphorus ; Algae ; Bioassay ; Aquatic biology ; Montana ; Reprints ; Biological availability ; Selenastrum capricornutum
Library Call Number Additional Info Location Last
NTIS  PB90-147661 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 11p
Eroding bank soils and riverine suspended sediments from the Flathead River-Lake ecosystem, Montana, USA, were cultured with the alga Selenastrum capricornutum Printz in PAAP medium with the sediments as the sole source of phosphorus. Extraction of phosphorus by NaOH and nitrilotriacetic acid (NTA) solutions were compared to results from algal bioassays. The fine sediment particles transported into Flathead Lake during spring runoff had the highest availability (i.e., 6% of total phosphorus). Bank soils which contained the greatest percentage of fine clays exhibited similar (i.e., 4% of total phosphorus) availability. Bank soils containing predominantly organic phosphorus had the lowest availability. Spearman's rank correlation indicated significance at the 5% test level between algal assay estimates of available phosphorus and both chemical extraction techniques. (Copyright (c) Dr. W. Junk Publishers, Dordrecht 1988.)