Record Display for the EPA National Library Catalog

RECORD NUMBER: 31 OF 34

OLS Field Name OLS Field Data
Main Title Trophic State of Lakes in North Central Florida.
Author Brezoni, Patrick L. ; Shanno, Earl E. ;
CORP Author Florida Univ., Gainesville. Water Resources Research Center.
Year Published 1971
Report Number WRRC-Pub-13; DI-14-31-0001-3068(1970) ;DI-14-31-0001-3068(1971); OWRR-B-004-FLA; 01331,; B-004-FLA(6)
Stock Number PB-204 491
Additional Subjects ( Lakes ; Nutrients) ; ( Florida ; Water quality) ; Shallow water ; Sands ; Multivariate analysis ; Nitrogen ; Phosphorous ; Nutrients ; Models ; Limnology ; Ponds ; Trophic State ; Oklawaha River Basin ; Alachua County(Florida)
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-204 491 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 107p
Abstract
General limnological and trophic conditions of 55 lakes and ponds in north and central Florida were established over an extensive one year sampling period. Florida lakes are typically shallow and in a sandy terrain. Most of the lakes have soft water, and high organic color is a common but variable property. Trophic conditions range from ultraoligotrophy in the sand-hill lakes of the Trail Ridge region to hypereutrophy in some large drainage lakes in Alachua County and in the Oklawaha River Basin. Trophic data were analyzed by multivariate techniques, and logical trophic groups derived by cluster analysis. A quantitative index of trophic state (TSI) was derived using 7 trophic indicators, and the TSI values were used to establish quantitative relationships between lake trophic conditions and watershed characteristics. Nitrogen and phosphorus budgets were calculated for the lakes based on land use and population patterns in the watersheds, and critical loading rates were estimated from the budgets and the trophic conditions. (Author)