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Parker-Ipswich-Essex Rivers Restoration Partnership

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Dissolved oxygen (DO) is a critical variable governing the ability of aquatic organisms to survive and thrive. Low dissolved oxygen levels can result from a variety of causes including high water temperature, eutrophication and low flow. The Ipswich River Watershed Association, Plum Island Estuary Long Term Ecological Research Station (LTER) and other partners have monitored DO at a variety of sites over the past 15+ years. We will collect and analyze the oxygen data from these various sources to investigate trends in DO concentration in each of the watersheds on a quarterly basis.

Availability: PI                    Frequency: Variable (monthly in the Ipswich)

Response Variable(s): Mean (annual and quarterly) DO concentration (mg/L) by watershed

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