Abstract
The algal growth potential （AGP） test is a representative bioassay for assessing the eutrophication of water bodies. In the AGP test, the maximum standing crop data is used for AGP. Therefore, the AGP test is relatively take a long time to complete. We propose that rapid algal bioassay using delayed fluorescence（ DF） may be useful to apply to the AGP test. In this report, we compared the maximum standing crop from biovolume as the conventional AGP test and the DF intensity per biovolume （DF/biovolume） to detect the AGP. The values of DF/biovolume were well-correlated with the conventional AGP. This indicates the potential use of DF/biovolume as the conventional AGP test. The methods will be expected to shorten the evaluation time.
