The multiple stressor ecological risk assessment for the mercury-contaminated South River and upper Shenandoah River using the Bayesian network-relative risk model

Integrated Environmental Assessment and Management
Wayne G LandisApril J Markiewicz

Abstract

We have conducted a regional scale risk assessment using the Bayesian Network Relative Risk Model (BN-RRM) to calculate the ecological risks to the South River and upper Shenandoah River study area. Four biological endpoints (smallmouth bass, white sucker, Belted Kingfisher, and Carolina Wren) and 4 abiotic endpoints (Fishing River Use, Swimming River Use, Boating River Use, and Water Quality Standards) were included in this risk assessment, based on stakeholder input. Although mercury (Hg) contamination was the original impetus for the site being remediated, other chemical and physical stressors were evaluated. There were 3 primary conclusions from the BN-RRM results. First, risk varies according to location, type and quality of habitat, and exposure to stressors within the landscape. The patterns of risk can be evaluated with reasonable certitude. Second, overall risk to abiotic endpoints was greater than overall risk to biotic endpoints. By including both biotic and abiotic endpoints, we are able to compare risk to endpoints that represent a wide range of stakeholder values. Third, whereas Hg reduction is the regulatory priority for the South River, Hg is not the only stressor driving risk to the endpoints. Ecological and ha...Continue Reading

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Citations

Apr 8, 2017·International Journal of Environmental Research and Public Health·Mary A FoxLawrence Martin
Jan 26, 2017·Risk Analysis : an Official Publication of the Society for Risk Analysis·Meagan J HarrisWayne G Landis
Aug 18, 2018·Integrated Environmental Assessment and Management·Scarlett E GrahamWayne G Landis
Jun 7, 2019·Nature Reviews. Genetics·Wouter van RheenenNaomi R Wray
Jul 22, 2018·Environmental Toxicology and Chemistry·Paul J Van den BrinkJoke van Wensem
Aug 26, 2020·Integrated Environmental Assessment and Management·Laura KaikkonenAnnukka Lehikoinen
Oct 16, 2020·Integrated Environmental Assessment and Management·Melissa WadeGraham Jewitt
Aug 26, 2020·Integrated Environmental Assessment and Management·Mariana Goodall Cains, Diane Henshel
Mar 13, 2021·Risk Analysis : an Official Publication of the Society for Risk Analysis·Gordon O'BrienVictor Wepener
Nov 2, 2020·Journal of Environmental Management·John F Carriger, Randy A Parker

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