AN EVALUATION OF THE ACCURACY OF ESTIMATING CHLOROPHYLL A IN TWO OKLAHOMA RESERVOIRS
Titel:
AN EVALUATION OF THE ACCURACY OF ESTIMATING CHLOROPHYLL A IN TWO OKLAHOMA RESERVOIRS
Auteur:
Grimshaw, Herbert J. Shapiro, Gary L. Jester, Douglas B. Butler, Daniel R.
Verschenen in:
Lake and reservoir management
Paginering:
Jaargang 2 (1986) nr. 1 pagina's 293-301
Jaar:
1986
Inhoud:
Accuracy of the in vivo method for estimating chlorophyll was evaluated on two Oklahoma reservoirs that are morphometrically and hydrologically dissimilar. The coefficients of correlation between chlorophyll a contents estimated fluorometrically and determined spectrophotometrically on Overholser and Lawtonka Reservoirs were 0.767 and 0.970, respectively. The mean of the error distribution on Overholser Reservoir was 0.07 ±3.12 μg/L (n = 30), and 0.52 ±2.11 μg/L (n = 150) on Lawtonka Reservoir. Regression equations were developed to permit prediction of chlorophyll a content from fluorometric measurements, and experiments were conducted to determine the factor(s) responsible for observed error. With proper calibration of the fluorometer, accuracy of the fluorometric estimates was equivalent to spectrophotometric precision. Therefore, in vivo fluorometry is uniquely suited for synoptic analysis of distribution of algal biomass and has wide application for reservoir management (Grimshaw and Shapiro, in prep.).