Strait of Georgia Marine Sediments Data Summaries, Findings, Publications

Strait of Georgia

The following table contains links to data summaries. (Click on X to open files. Zip files will need to be extracted into another folder. Shaded boxes indicate summaries not yet available.)

Year Sampled Station Locations Physical Chemical Toxicity Benthic Invertebrates Sediment Quality Triad Indicators
1997 * * * * * *
2006 X X X X X X
2016            

*  Available upon request.

 

The Strait of Georgia Sediment Quality Triad Index (PDF) offers a one-page summary of these findings.

Puget Sound Marine Sediment Indicators is a webpage that describes the Sediment Quality Triad Index, a method to rate the health of marine sediments.

 

Major Findings 2006

All our studies assess sediment quality by evaluating chemistry, toxicity, and benthic (sediment-dwelling) invertebrate community structure. Results are compared with those from similar surveys, conducted with the same methods, to determine changes in sediment quality.

Results are rolled up into the Sediment Quality Triad Index, which categorizes sediment quality on a 5-level scale from unimpacted to clearly impacted.  The triad index combines information on measures of exposure (sediment contamination), response (toxicity), and biological effects (benthic invertebrates).  The Triad Index showed declines:


Publications

Partridge, V., E. Long, S. Weakland, K., and M. Dutch. 2012. Sediment Quality Assessment of the Southern Strait of Georgia, 2006. Washington State Department of Ecology Publication 12-03-001. 137 pp. + electronic appendices.
Partridge, V., E. Long, S. Weakland, K., and M. Dutch. 2012. Sediment Quality Changes in the Southern Strait of Georgia Since 1997. Washington State Department of Ecology Publication 12-03-002. 4 pp.

Quality Assurance Project Plan

Dutch, M., V. Partridge, S. Weakland, K. Welch, and E. Long. 2009. Quality Assurance Project Plan: The Puget Sound Assessment and Monitoring Program Sediment Monitoring Component. Washington State Department of Ecology Publication 09-03-121. 98 pp.