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Publication Date

Spring 5-1-2020


Trace metal bioaccumulation negatively impacts marine ecosystem health and increases the risk of human exposure to contaminants. Pollution trends can be investigated by measuring trace metal bioaccumulation in algae, but little is known about which algal groups are the most reliable bioindicators. The objectives of this study were to use dry ashing, wet digestive, and spectroscopic techniques to determine the concentrations Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn across major macroalgae groups in Humboldt Bay, and evaluate bioindicator ability using BSAF values. Our results indicate that Chlorophyta and Rhodophyta are the most sensitive and suitable bioindicators for trace metal pollution.