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Quality Assurance Project Plan: Spatial and Seasonal Variability in Salish Sea Bottom-Water Microbial Respiration

Publication number Date Published
19-03-106August 2019
VIEW NOW Quality Assurance Project Plan: Spatial and Seasonal Variability in Salish Sea Bottom-Water Microbial Respiration (Number of pages: 51) (Publication Size: 2076KB)

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Author(s) Apple, Jude; Bjornson, Shauna; Figueroa-Kaminsky, Cristiana; Pelletier, Greg
Description Water column microbial respiration is a key driver of carbon cycling, pH, and oxygen dynamics in marine ecosystems and a primary step for remineralization of organic matter in natural waters. However, in situ estimates of microbial respiration and its relative contribution to hypoxia and ocean acidification are seldom measured. For this reason, we have limited knowledge of regionally relevant rates for microbial respiration to include in water quality models. The present study seeks to characterize the spatial and seasonal variability of organic matter remineralization in Salish Sea near-bottom waters at stations ranging in depth from 15 to 200 m, improve the geographic scope of existing microbial respiration data sets, and provide empirical estimates for inclusion in the Salish Sea water quality model with the objective of optimizing model performance. Ultimately, these data and their use in water quality models will provide insight into the response of inland marine waters of the Pacific Northwest to a warmer, more acidified, and potentially more hypoxic ocean.
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Keywords marine water quality, Salish Sea, marine waters, model, Puget Sound
WEB PAGE Salish Sea model
DATA Environmental Information Management (EIM) #MicrobialRespiration