Publications Home

Publication Summary

Our Ecology website has changed, which can cause broken links.
To report these, please contact us with the publication and broken link.


POSTER: Identifying sources of toxics using biofilms

Publication number Date Published
17-03-029December 2017
VIEW NOW: POSTER: Identifying sources of toxics using biofilms (Number of pages: 1) (Publication Size: 2529KB)

Trouble viewing? Try these free options.
Author(s) Hobbs, W.O., S. Collyard, and C. Larson
Description Biofilms, growing on rocks in rivers and streams, take up and bind contaminants from the water and contribute to the base of the food web. The Department of Ecology has been using the contaminant concentrations of biofilms to assess the spatial distribution of metals and organic contaminants in rivers and streams. Our results show a strong, statistically significant relationship between dissolved concentrations of PCBs, DDT, and total metals in the water column and the concentrations bound in and on biofilms. The use of biofilms in source identification studies has proven to be highly effective under a number of hydrologic conditions and for various toxic contaminants.
REQUEST A COPY The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.

Accessibility Options
Persons with hearing loss can call 711 for Washington Relay Service
Persons with a speech disability can call 877-833-6341
Contact Will Hobbs at 360-407-7512 or
Keywords biofilm, periphyton, Holden Mine, SPMD, Wenatchee River, toxics, toxics monitoring, poster, metals
WEB PAGE Toxics studies

Wenatchee River PCB and DDT Source Assessment

Quality Assurance Project Plan: A Long-Term Monitoring Plan to Assess Aquatic Life Uses on Railroad Creek Using Biological Assessment