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- W2103459454 abstract "Water samples were taken at 10 sampling sites on Beaver Lake, Arkansas, from August 1993 to July 1995 approximately bi-monthly, starting 1 m below the surface and continuing every other meter to the lake bottom. Chlorophyll a concentrations were compared to a study conducted 20 yr earlier. Chlorophyll a concentration in year 1 significantly increased compared to levels 20 yr ago. However, chlorophyll a levels significantly decreased from years 1 to 2. The decrease in primary production could be related to increased lake levels and suspended sediments caused by episodic flood events. The decrease in chlorophyll a was accompanied with an increase in total phosphorus from years 1 to 2 throughout the reservoir. The trophic status throughout the reservoir indicated by chlorophyll a, total phosphorus, and Secchi depth varied spatially (longitudinal gradients) and temporally. The relationship between chlorophyll a and phosphorus was weakened because other factors were controlling phytoplankton growth. The dynamic nature of this reservoir can undermine traditional relationships between nutrients and primary production from year to year. 1999 Oklahoma Academy of Sciences" @default.
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- W2103459454 date "1999-02-17" @default.
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- W2103459454 title "Trophic Conditions and Gradients of the Headwater Reaches of Beaver Lake, Arkansas" @default.
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