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Hypoxia and Ocean Acidification project

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Dr. Francis Chan's 2012-2014 Oregon Sea Grant-supported project, "Understanding, Forecasting and Communicating the Linkages Between Hypoxia and Ocean Acidification in Oregon's Coastal Ocean"

Dr. Francis Chan's 2012-2014 Oregon Sea Grant-supported project, "Understanding, Forecasting and Communicating the Linkages Between Hypoxia and Ocean Acidification in Oregon's Coastal Ocean"

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  • 1. Understanding, Forecasting And Communicating The Linkages Between Hypoxia And Ocean Acidification In Oregons Coastal Ocean Francis Chan1,Kristen Milligan1, Jack Barth2 1Department of Zoology, Oregon State University2College of Earth, Ocean and Atmospheric Sciences, Oregon State University
  • 2. The Problem from 35,000 feet: Hypoxia and OceanAcidification are Leading Pathways of Ecosystem Changes Changes in aragonite solubility % oxygen changeOschlies et al. GBC 2008 Feely et al. Oceanography 2009
  • 3. Locally, Oregon’s coastal ocean is facing these changes today…and they are closely connected ocean acidificationpCO2 (μatm) DO (ml l-1) hypoxia SH-70 mooring
  • 4. 1. Where and when are hypoxia and OAmost strongly coupled?[Are there hot spots (and refuges) wherethis multi-stressor problem is moststrongly (weakly) felt?]
  • 5. Why do we ask this?1-biologically, OA and hypoxia stress can be interactive 2- we already see a mosaic-like pattern of hypoxia stress GLODAP NE Pacific Aragonite Solubility Pierce and Barth (in prep) DO (umol kg-1) 3- hypoxia and OA stress are not perfectly coupled (*especially in the
  • 6. 2. What forcings drive the variation inhypoxia-OA coupling?[What will we face in the future, and howfast will these changes came?]
  • 7. Why do we ask this? 1- Bigger and faster changes in the coastal ocean (?) observed Dore et al. 2008 ca. 20 umol kg-1 DIC increase Modeled (w/wind and sourcewater) 2- Nearshore hypoxia sensitive to changes in open ocean oxygen content and upwelling wind Pierce et al. 2012 forcing (both climate sensitive features)
  • 8. A Central OR OA-Hypoxia Observing Array
  • 9. Coast-Wide Synergies NOAA National OA Plan
  • 10. Some Outreach Challenges:•Ocean acidification is causing dead zones•OA is a remote tropical island problem•OA and hypoxia will wipe out any benefits ofreserves•www.Ilovecarbondioxide.com
  • 11. Where do we want to get to collectively•Enhance Oregon as a model system for OA-hypoxia research (OA-hypoxia Townhalls)•Inform the public with the best available science(and messaging in the most effective way)•Inform policy with the best available science

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