GeoEnviroPro Talks are free weekly, 30-minute webinars designed to keep you current on emerging topics in environmental science and practice. Join live sessions at no cost. Replays are available for a limited time after each webinar.

About the Webinar: Juvenile Chinook salmon in the Lower Fraser River encounter a complex mixture of organic contaminants from urban, agricultural, and industrial sources. This presentation introduces a multiple‑lines‑of‑evidence screening approach designed to broaden contaminant assessment beyond traditional environmental quality guidelines. Using the Lower Fraser River as a case study, the talk examines how integrating in vivo toxicity and in vitro bioactivity databases can expand the capacity to screen contaminants that may pose risks to the health of salmon and other aquatic life. It also highlights practical considerations for applying this screening approach.

About the Instructor: Bonnie Lo, MET, PhD, RPBio
Dr. Lo is an environmental toxicologist and independent consultant with over 15 years of experience in aquatic toxicology. Her work spans toxicity testing, method development, and site‑specific evaluations for industry, consulting, and government clients. Her PhD research included metabolomics‑based assessments of juvenile salmon health, acute toxicity testing of the rubber tire-derived contaminant 6PPD‑quinone, and large‑scale contaminant screening in the Lower Fraser River to inform monitoring and salmon recovery efforts.