Puget Sound Marine Sediment Indicators
Scientists have developed several ecological indicators to track the health of the Puget Sound ecosystem and how it changes over time. Sediment health is assessed with a Sediment Chemistry Index, a Sediment Toxicity Index, and a Sediment Benthic Index of sediment-dwelling invertebrate community structure. A Sediment Quality Triad Index combines these separate indicators into a single assessment of sediment quality. The Sediment Chemistry Index and Sediment Quality Triad Index were adopted by the Puget Sound Partnership as Vital Signs Dashboard Indicators.
An explanation of each sediment quality index is given below.
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