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IGP2010 microbial - Bacterial community profiling at sewage treatment plant outfalls

Published by Northwest Fisheries Science Center | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: December 20, 2025 | Last Modified: 2019-06-03T00:00:00.000+00:00
Penn Cove (in the Whidbey Basin) is designated as a category 5, 303d impaired water body due to low dissolved oxygen. In addition to runoff from adjacent developed and agricultural lands, treated effluent from two sewage treatment plants (STPs) and freshwater from the nearby Skagit River flow into Penn Cove. This project investigates the structure and function of microbial communities in the context of inorganic nutrients and physical parameters to assess any detectable influence of STPs. Work is conducted by NOAA personnel with assistance from undergraduate research interns. Data collected across four different seasons include bacterial/archeal abundance (biomass), heterotrophic production (productivity), bacterial diversity, chlorophyll A, inorganic nutrient concentrations, dissolved oxygen concentration, and seawater temperature. Anticipated products are presentations at scientific meetings related to marine dissolved oxygen and to local management authorities (e.g., county government) as well as publication in the referred literature. The project is a seed project to develop further capacity to assess additional low dissolved oxygen sites. FileMaker Pro of field & lab analyses.

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