Abstract
During 1979-80, several large impoundments (dredge-pits) on the south shore of Nueces Bay, Corpus Christi, Texas, were filled with sediments from dredging operations. Waterbirds were observed using these impounded areas as feeding and resting sites. Previously the authors found that shorebirds collected from underdeveloped areas in Nueces Bay in 1976-77 before the impoundments were built had high selenium and cadmium concentrations in their tissues. Thus, through the food web, waterbirds utilizing dredge disposal impoundments may be exposed to even higher concentrations of certain heavy metals. Their goal was to determine the extent to which aquatic birds used dredge-pits and to determine the accumulation of selected heavy metals in their tissues compared to non-industrialized areas.
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