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Ocean Acidification: Scientific Understanding & Implications for F ood Supply

Ocean Acidification: Scientific Understanding & Implications for F ood Supply. Scott Doney Woods Hole Oceanographic Institution NCSE Conference: Environment & Security, Washington DC, January 2012. Special Thanks To:

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Ocean Acidification: Scientific Understanding & Implications for F ood Supply

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  1. Ocean Acidification: Scientific Understanding & Implications for Food Supply Scott Doney Woods Hole Oceanographic Institution NCSE Conference: Environment & Security, Washington DC, January 2012 Special Thanks To: Alan Barton, Sarah Cooley, Richard Feely, HaukeKite-Powell, Noelle Lucey& Brad Warren

  2. Rising Atmospheric CO2 from Fossil Fuel Burning

  3. Marine Life Susceptible to Ocean Acidification -Reduced shell formation -Habitat loss -Less available prey

  4. Negative Impacts of CO2 on Mollusks Future High CO2 Levels Current Low CO2 Levels -increased larval mortality -smaller, malformed shells -delayed metamorphosis -decreased settlement Ann Cohen & Dan McCorkle (Woods Hole)

  5. Commercially Important Mollusk Species Affected Mussels Wild harvest & aquaculture: -mussels -oysters -hard clams -bay & sea scallops Oysters Gazeau et al., 2007; Green et al. L&O 2009; Talmage & Gobler L&O 2009; PNAS 2010

  6. Potential Food Web Impacts Coccolithophores ARCOD@ims.uaf.edu Copepods Barrie Kovish Pacific Salmon V. Fabry Vicki Fabry Pteropods

  7. Collapse of Pacific NW Oyster Hatcheries -Commercial oyster hatcheries a $100M industry (3000 Jobs) -No natural Pacific oyster recruitment in WA state for past 5 years & many hatchery failures

  8. Informing Solution Strategies 2011 Monitoring Stations Seawater conditions linked to low oyster recruitment in hatchery Winds from S Upwelling favorable winds Upwelling favorable winds High mortality High mortality High survival -By turning off the water flow when the water showed low pH values, the hatcheries had their best year since the collapse saving the industry ~$35M in 2010. Alan Barton

  9. Least adaptable Most adaptable Vulnerability to Ocean Acidification Index Based on Mollusk Fisheries • -Exposure • chemistry change • -Sensitivity • mollusk fisheries • seafood imports • protein supply • -Adaptive capacity • per capita GNP Protein insufficient Mollusks ≥ 1% of protein Both Net importers Net exporters Cooley, Lucey, Kite-Powell, & Doney, Fish & Fisheries, in press

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