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Stormwater, salmon, and the health of Puget Sound


Keynote speaker at Sound Waters 2010 Dr. Nathaniel ‘Nat’ Scholtz, NOAA/NWFSC Coho salmon are our first choice for a ‘sentinel species’ because they: are widely distributed inhabit lowland steams that are important and familiar to humans and areas impacted directly by stormwater runoff (if we can reduce toxics in lowland streams, then we’ll likely keep [...]

A toxics-based biological observing system (tBiOS) for PS


Lyndal Johnson, NWFSC Pre-spawn mortality of salmon is occurring in restored urban streams.  It is associated with urban development, road traffic, and storm water runoff, but concentrations of toxics aren’t high enough to account for the convulsions and lethargy.  We suspect a synergistic effect of multiple pollutants. PAHs affect embryo development in spawned herring eggs [...]