Effects of domestic effluents on the photosynthetic rate of Dunaliella marina, Skeletonema costatum and Chlorella sp. and its application to high school biology
1999
Areola, M.B.
This study primarily aims to determine the effects of domestic effluents on the photosynthetic rate of the following phytoplanktons: Dunaliella marina, Skeletonema costatum and Chlorella sp. using an improvised manometer. A set of laboratory activities based on the study has been devised to supplement high school biology experiments. The results revealed that domestic effluents at 20 percent, 40 percent, 60 percent and 80 percent concentrations affected the photosynthetic activity of the three phytoplanktons. It has also been noted that the higher the concentration of domestic effluents, the lesser the photosynthetic activity of the phytoplanktons. However, the degree of effects vary with the different phytoplanktons. It is also noted that the 80 percent concentration of domestic effluents for a 24-hour treatment has been detrimental to all the phytoplanktons. The laboratory activities so designed have been shown to be useful for high school biology classes
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