Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: The effect of turbidity caused by sewage pollution on the productivities of Iridea flaccida, Phyllospaidx torreyi, and Laminaria setchellii
Student Author(s): Hainsworth, John
Faculty Advisor(s): Wheeler, Ellsworth
Pages: 17
Location: Final Papers Biology 175H
Date: June 1970
Keywords: sewage pollution
Abstract: Observation of the floral community surrounding an intertidal sewage outfall shows that some species of benthic algae and marine plant are able to exist in areas of high sewage concentrations, while other species cannot tolerate this altered environment. However, even the most resistant species are small and stunted in the immediate vicinity of the outfall. One of the most salient characterisitics of sewage pollution is the increased turbidity caused by the suspended particulate matter in the sewage. An experiment was designed to answer two questions: 1) does turbidity effect the productivity of marine flora, and 2) does turbidity have a different effect on difference species. In all species studied the prodictivity decreased markedly at high turbidities. The productivities of the three species studied also showed differences intheir rates of decline as the turbidity increased.