John Gala
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View article: A decision tree analysis of nonindigenous species risk from ballast water to the lower Columbia River and Oregon coast, USA
A decision tree analysis of nonindigenous species risk from ballast water to the lower Columbia River and Oregon coast, USA Open
Hazard characterization and risk assessment are commonly used to prioritize vectors of nonindigenous species (NIS) for inspection or other prevention opportunities. Commercial shipping vessels are a target of such vector-based management s…
View article: Predicting Puget Sound's organic carbon—and why we need enhanced monitoring
Predicting Puget Sound's organic carbon—and why we need enhanced monitoring Open
How much has the total organic carbon deposited into the water column and sediments of Puget Sound increased due to human activity? How has that increase impacted sediment flux rates, hypoxia and the carbonate system balance? These are two…
View article: Johnson Creek Bacteria TMDL Implementation: Status and Trend Analysis Study
Johnson Creek Bacteria TMDL Implementation: Status and Trend Analysis Study Open
Like many other waterbodies in the United States, Johnson Creek, a tributary of the Lower Willamette River is water quality limited for bacteria. Escherichia coli (E. coli), a member of the fecal coliform bacteria group, has been found to …