Marine Phytoplankton Vary in Their Response to Chlorinated Hydrocarbons

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Science  27 Mar 1970:
Vol. 167, Issue 3926, pp. 1724-1726
DOI: 10.1126/science.167.3926.1724


Photosynthesis and growth in cultures of four marine phytoplankton species, isolated from different oceanic environments, were affected by three chlorinated hydrocarbons (DDT, dieldrin, and endrin) to varying extents. This ranged from complete insensitivity in Dunaliella to toxicity at concentrations of 0.1 to 1.0 part per billion of the pesticides in Cyclotella. Other forms were intermediate in their response.

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