FY 2012

The Pacific oyster, Crassostrea gigas, shows negative correlation to naturally elevated carbon dioxide levels: Implications for near-term ocean acidification impacts

Barton, A., B. Hales, G. Waldbusser, C. Langdon, and R.A. Feely

Limnol. Oceanogr., 57, doi: 10.4319/lo.2012.57.3.0698, 698–710 (2012)

We report results from an oyster hatchery on the Oregon coast, where intake waters experienced variable carbonate chemistry (aragonite saturation state < 0.8 to > 3.2; pH < 7.6 to > 8.2) in the early summer of 2009. Both larval production and midstage growth (− 120 to − 150 µm) of the oyster Crassostrea gigas were significantly negatively correlated with the aragonite saturation state of waters in which larval oysters were spawned and reared for the first 48 h of life. The effects of the initial spawning conditions did not have a significant effect on early-stage growth (growth from D-hinge stage to − 120 µm), suggesting a delayed effect of water chemistry on larval development.

(This publication can be found online at http://www.aslo.org/lo/toc/vol_57/issue_3/0698.html.)