Applying biotic ligand models and Bayesian techniques: ecological risk assessment of copper and nickel in Tokyo rivers

Integrated Environmental Assessment and Management
Takehiko I Hayashi

Abstract

Biotic ligand models (BLMs) have been broadly accepted and used in ecological risk assessment of heavy metals for toxicity normalization with respect to water chemistry. However, the importance of assessing bioavailability by using BLMs has not been widely recognized among Japanese stakeholders. Failing to consider bioavailability may result in less effective risk management than would be possible if currently available state-of-the-art methods were used to relate bioavailable concentrations to toxic effects. In this study, an ecological risk assessment was conducted using BLMs for 6 rivers in Tokyo to stimulate discussion about bioavailability of heavy metals and the use of BLMs in ecological risk management in Japan. In the risk analysis, a Bayesian approach was used to take advantage of information from previous analyses and to calculate uncertainties in the estimation of risk. Risks were judged to be a concern if the predicted environmental concentration exceeded the 5th percentile concentration (HC5) of the species sensitivity distribution. Based on this criterion, risks to stream biota from exposure to Cu were judged not to be very severe, but it would be desirable to conduct further monitoring and field surveys to determ...Continue Reading

References

Oct 13, 2001·Environmental Toxicology and Chemistry·D M Di ToroR C Santore
Dec 16, 2004·Environmental Science & Technology·Soumya Niyogi, Chris M Wood
Jul 28, 2009·The Science of the Total Environment·P A Van SprangK A C De Schamphelaere
Aug 6, 2010·Environmental Science and Pollution Research International·Takehiko I Hayashi, Nobuhisa Kashiwagi

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Citations

Mar 18, 2015·Integrated Environmental Assessment and Management·Douglas B McLaughlin
Mar 19, 2013·Environmental Toxicology and Chemistry·David H MillerGerald T Ankley
Dec 9, 2016·Bulletin of Environmental Contamination and Toxicology·Wanbin WangRui Chen
May 26, 2021·The Science of the Total Environment·Jiwoong ChungJong-Hyeon Lee
Aug 17, 2021·Ecotoxicology and Environmental Safety·Samantha Jiménez-OyolaPaola Romero
Jun 15, 2020·Ecotoxicology and Environmental Safety·Samantha Jiménez-OyolaPablo Higueras

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