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Monitoring exposure of brown bullheads and benthic macroinvertebrates to sediment contaminants in the Ashtabula river before, during, and after remediation

Meier, John R. ; Lazorchak, James M. ; Mills, Marc ; Wernsing, Paul ; Baumann, Paul C.

Environmental toxicology and chemistry, 2015-06, Vol.34 (6), p.1267-1276 [Periódico revisado por pares]

United States: Blackwell Publishing Ltd

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Título:
Monitoring exposure of brown bullheads and benthic macroinvertebrates to sediment contaminants in the Ashtabula river before, during, and after remediation
Autor: Meier, John R. ; Lazorchak, James M. ; Mills, Marc ; Wernsing, Paul ; Baumann, Paul C.
Assuntos: Animals ; Biomonitoring ; Bioremediation ; Contaminated sediments ; DNA Damage - drug effects ; Dredging ; Environmental Monitoring ; Environmental Restoration and Remediation ; Gas Chromatography-Mass Spectrometry ; Genotoxicity ; Geologic Sediments - chemistry ; Ictaluridae - metabolism ; Invertebrates ; Invertebrates - genetics ; Invertebrates - metabolism ; Marine ecology ; Polychlorinated biphenyl ; Polychlorinated Biphenyls - analysis ; Polychlorinated Biphenyls - toxicity ; Polycyclic aromatic hydrocarbon ; Polycyclic Aromatic Hydrocarbons - analysis ; Polycyclic Aromatic Hydrocarbons - toxicity ; Rivers ; Rivers - chemistry ; Sampling ; Sediment chemistry ; Sediment remediation ; Water Pollutants, Chemical - analysis ; Water Pollutants, Chemical - toxicity
É parte de: Environmental toxicology and chemistry, 2015-06, Vol.34 (6), p.1267-1276
Notas: ArticleID:ETC2877
istex:D51C0A716C46C4127574AE8D0271467F172D7249
ark:/67375/WNG-LLT0R4RP-M
Descrição: In 2007, approximately 420 500 cubic meters of contaminated sediment were removed from the Ashtabula River by dredging. The primary objective of the present study was to monitor contaminant exposure in fish and macroinvertebrates before, during, and after dredging. This was done by measuring tissue concentrations of polychlorinated biphenyl (PCB) and polycyclic aromatic hydrocarbon (PAH) in brown bullhead catfish (Ameriurus nebulosa) and in benthic macroinvertebrates, assessing changes in DNA damage in fish liver and blood, and scoring external and histopathological lesions and anomalies in the fish. In surficial sediment PCBs and PAHs were also quantified in conjunction with the biological sampling. The results show a significant reduction in contaminant levels in both fish and macroinvertebrates following dredging, indicating the effectiveness of the remediation in reducing exposure of biota to the primary contaminants of concern. Similarly, DNA damage levels in fish collected from the Ashtabula River significantly declined following dredging; however, a similar reduction in DNA damage over time was seen in fish collected from a reference site (Conneaut Creek), making interpretation difficult. Macroinvertebrate PCB concentrations were reflective of the sediment concentrations in the areas where Hester‐Dendy samplers were deployed for macroinvertebrate collection. The present study demonstrates that these methods can be used to evaluate and assess the effectiveness of remediation techniques at contaminated sediment sites. Environ Toxicol Chem 2015;34:1267–1276. © 2015 SETAC
Editor: United States: Blackwell Publishing Ltd
Idioma: Inglês

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Monitoring exposure of brown bullheads and benthic macroinvertebrates to sediment contaminants in the Ashtabula river before, during, and after remediation

Meier, John R. ; Lazorchak, James M. ; Mills, Marc ; Wernsing, Paul ; Baumann, Paul C.

United States: Blackwell Publishing Ltd

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