Browsing by Author "Johnson, Geoffrey"

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Environmental History of Estuarine Dissolved Oxygen Inferred from Trace-Metal Geochemistry and Organic Matter

Johnson, Geoffrey (University of Oregon, 2017-05-01)

Environmental history recorded in sediments can reconstruct estuarine water quality metrics, such as dissolved oxygen, through the use of geochemical and biological proxies. I collected sediment cores from two locations ...
In-Stream Monitoring on the McKenzie River, Oregon

Marti, Laura; Keeler, Matt; West, Taylor; Johnson, Geoffrey; Hayward, Kadie; Jamison, Kimina; Lascheck, Robbie; Senate, Bre; Sosa, Ashley; Thompson, Drew; Vargo, Jennifer (University of Oregon, 2014)

Salmon are valued not only as a food source and a symbol of recreation, history, and community, but also as bioindicators of broad ecological functions related to aquatic systems. Countless projects across the Pacific ...