Food web contaminant dynamics of a large Atlantic Slope river: Implications for common and imperiled species

The Science of the Total Environment
Tiffany N PenlandForrest W Sessions

Abstract

Persistent and bioaccumulative contaminants often reach concentrations that threaten aquatic life by causing alterations in organism behavior and development, disruption of biological processes, reproductive abnormalities, and mortality. The objectives of this research were to determine the aquatic food web structure and trophic transfer and accumulation of contaminants within a riverine ecosystem and identify potential stressors to the health of an imperiled fish, the robust redhorse (Moxostoma robustum) and other species of conservation concern in a large Atlantic Slope (USA) river. Trophic position was determined for food web taxa by stable isotope analyses of representative producers, consumers, and organic matter of the Yadkin-Pee Dee River of North Carolina and South Carolina. Contaminant analyses were performed on water, sediment, organic matter, and aquatic biota to assess the prevalence and accumulation of polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), current use pesticides (CUPs), polycyclic aromatic hydrocarbons (PAHs), and selected metals. Contaminants were prevalent in the environment and food web components of the river. PCBs were detected in 32% of biotic samples (mean 0.24μg/g dry weight [D...Continue Reading

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Citations

Nov 18, 2020·Environmental Toxicology and Chemistry·Caitlyn DonadtMark S Poesch
Jun 24, 2018·The Science of the Total Environment·Casey A GrieshaberSeth W Kullman
May 7, 2021·Environmental Toxicology and Chemistry·Casey A GrieshaberJ Mac Law
Apr 21, 2020·Environmental Science & Technology·Barbara J MahlerJason May
Apr 30, 2020·Environmental Science & Technology·Tiffany N PenlandForrest W Sessions

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