Record Display for the EPA National Library Catalog

RECORD NUMBER: 4 OF 8

OLS Field Name OLS Field Data
Main Title Plant Available Phosphorus Status of Lakes.
Author Armstron, D. E. ; Harri, R. F. ; Syer, J. K. ;
CORP Author Wisconsin Univ., Madison. Water Resources Center.
Year Published 1971
Report Number DI-14-01-0001-1961; OWRR-B-022-WIS; 02974,; B-022-WIS(6)
Stock Number PB-206 156
Additional Subjects ( Limnology ; Phosphorus cycle) ; ( Sediments ; Phosphorus cycle) ; Lakes ; Phosphorus inorganic compounds ; Phosphorus organic compounds ; Phosphorus isotopes ; Exchange reactions ; Colorimetric analysis ; Fresh water biology ; Adenosine phosphates ; Nutrients ; Eutrophication
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-206 156 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 115p
Abstract
The factors controlling the available P status of lakes were investigated. The influence of sediment P on the P status of the overlying water was given primary attention. Sediments from several noncalcareous and calcareous Wisconsin lakes were investigated. Sediments contained large amounts of inorganic and organic P; generally more than one-half of the inorganic P associated with a gel complex dominated by short-range order hydrated iron oxides and hydrous oxides. Measurements of exchangeability using 32P and of the nutrient status of sediment microorganisms (ATP per cell relationships) and the ability of algae inoculated into sediment-water systems to utilize sediment P as their sole source of P was investigated. Evidence based in part on comparison of 32P and inorganic phosphate measurements indicated that the Murphy and Riley (1962) colorimetric method provided valid information on the levels of dissolved inorganic P in lake waters.