%0 Journal Article %A Shcherbak, V. I. %D 2001 %I Begell House %N 4 %P 7 %R 10.1615/HydrobJ.v37.i4.60 %T The Influence of the Duration of Exposition on the Indices of Phytoplankton Primary Production in Eutrophic Water Bodies Using the Bottle Method in the Oxygen Modification %U https://www.dl.begellhouse.com/journals/38cb2223012b73f2,53e8a12127c92c01,6af5ef5a309fdd60.html %V 37 %X The bottle method with the daily exposition is a reliable tool for determining the total primary production in eutrophic water bodies, if the biomass of phytoplankton does not exceed 15.0 g/m3. The implementation of this method with the daily exposition at a higher biomass of phytoplankton introduces errors into the measurements. At higher biomass parameters of phytoplankton (more than 15.0 g/m3), the values of the total primary production are 1.74-2.78 times lower than the integral values obtained by summing the data of 4-hour exposures, The data obtained are statistically valid. %8 2001-08-01