| Study ID | MicrobialRespiration |
| Study Name | Spatial and seasonal variability in Salish Sea bottom-water microbial respiration |
| EIM Data Entry Review Status | Not Reviewed |
| Study Type | General environmental study |
| Study Purpose | To determine spatial and seasonal variability in Salish Sea bottom-water microbial respiration. |
| Field Collection Date Range | 9/7/2018 - 6/10/2019 |
| Data First/Last Loaded Date |  |
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| Ecology Program or Other Responsible Entity | Ecy Environmental Assessment Program |
| Ecology Contact | Jude Apple |
| Ecology Monitoring Program | |
| Submitting Organization | WA Department of Ecology (internal) |
| Study QA Planning Level | LEVEL 3: QAPP, SAP, or Equivalent. |
| Study QA Project Plan 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. In 2014, we began reconnaissance monitoring of respiration rates at multiple sites in the central Salish Sea (San Juan Islands, Bellingham Bay) and including routine monitoring of short-term respiration at multiple sites in Padilla Bay National Estuarine Research Reserve (NERR). Our investigation reveals that rates of respiration vary seasonally and appear to be associated with changes in organic matter supply and, to a lesser extent, temperature, and incoming deeper waters of marine origin characterized by relatively low but consistent rates of respiration (i.e. ~5 ug O2 L-1 h-1). |
| Study QA Assessment Level | Level 3: Data Verified and Assessed for Usability |
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