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Ecological risk assessment for mink and short‐tailed shrew exposed to PCBs, dioxins, and furans in the Housatonic River area
ABSTRACTA probabilistic risk assessment was conducted to characterize risks to a representative piscivorous mammal (mink,Mustela vison) and a representative carnivorous mammal (short‐tailed shrew,Blarina brevicauda) exposed to PCBs, dioxins, and furans in the Housatonic River area downstream of the General Electric (GE) facility in Pittsfield, Massachusetts. Contaminant exposure was estimated using a probabilistic total daily intake model and parameterized using life history information of each species and concentrations of PCBs, dioxins, and furans in prey collected in the Housatonic River study area. The effects assessment preferentially relied on dose–response curves but defaulted to benchmarks or other estimates of effect when there were insufficient toxicity data. The risk characterization used a weight of evidence approach. Up to 3 lines of evidence were used to estimate risks to the selected mammal species: 1) probabilistic exposure and effects modeling, 2) field surveys, and 3) species‐specific feeding or field studies. The weight of evidence assessment indicated a high risk for mink and an intermediate risk for short‐tailed shrew.Integr Environ Assess Manag2016;12:174–184. © 2015 SETAC
Key PointsA probabilistic risk assessment was conducted to characterize risks to representative piscivorous and carnivorous mammals (mink and shrew, respectively) exposed to PCBs, dioxins and furans in the Housatonic River downstream of the General Electric (GE) facility in Pittsfield, Massachusetts.Contaminant exposure was estimated using a probabilistic total daily intake model, and parameterized using life history information of each species and concentrations of PCBs, dioxins and furans in prey collected in the Housatonic River study area.Based on probabilistic exposure and effects modeling, field surveys, and species‐specific feeding or field studies, the weight of evidence assessment indicated a high risk for mink and an intermediate risk for short‐tailed shrew.
Ecological risk assessment for mink and short‐tailed shrew exposed to PCBs, dioxins, and furans in the Housatonic River area
ABSTRACTA probabilistic risk assessment was conducted to characterize risks to a representative piscivorous mammal (mink,Mustela vison) and a representative carnivorous mammal (short‐tailed shrew,Blarina brevicauda) exposed to PCBs, dioxins, and furans in the Housatonic River area downstream of the General Electric (GE) facility in Pittsfield, Massachusetts. Contaminant exposure was estimated using a probabilistic total daily intake model and parameterized using life history information of each species and concentrations of PCBs, dioxins, and furans in prey collected in the Housatonic River study area. The effects assessment preferentially relied on dose–response curves but defaulted to benchmarks or other estimates of effect when there were insufficient toxicity data. The risk characterization used a weight of evidence approach. Up to 3 lines of evidence were used to estimate risks to the selected mammal species: 1) probabilistic exposure and effects modeling, 2) field surveys, and 3) species‐specific feeding or field studies. The weight of evidence assessment indicated a high risk for mink and an intermediate risk for short‐tailed shrew.Integr Environ Assess Manag2016;12:174–184. © 2015 SETAC
Key PointsA probabilistic risk assessment was conducted to characterize risks to representative piscivorous and carnivorous mammals (mink and shrew, respectively) exposed to PCBs, dioxins and furans in the Housatonic River downstream of the General Electric (GE) facility in Pittsfield, Massachusetts.Contaminant exposure was estimated using a probabilistic total daily intake model, and parameterized using life history information of each species and concentrations of PCBs, dioxins and furans in prey collected in the Housatonic River study area.Based on probabilistic exposure and effects modeling, field surveys, and species‐specific feeding or field studies, the weight of evidence assessment indicated a high risk for mink and an intermediate risk for short‐tailed shrew.
Ecological risk assessment for mink and short‐tailed shrew exposed to PCBs, dioxins, and furans in the Housatonic River area
Integr Envir Assess & Manag
Moore, Dwayne RJ (author) / Breton, Roger L (author) / DeLong, Tod R (author) / Ferson, Scott (author) / Lortie, John P (author) / MacDonald, Drew B (author) / McGrath, Richard (author) / Pawlisz, Andrzej (author) / Svirsky, Susan C (author) / Teed, R Scott (author)
Integrated Environmental Assessment and Management ; 12 ; 174-184
2016-01-01
Article (Journal)
Electronic Resource
English
Construction of Shepaug Hydro-Electric Project on Housatonic River in Connecticut
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