Spider crabs were not able to fully buffer their internal pH when exposed to ocean acidification conditions for 12 days. Behavior of the crabs was not impaired by ocean acidification conditions or acute heat stress when they happened separately, but it was when both occurred at the same time. (Laboratory ...

This article provides an overview of how rivers, which tend to be acidic compared to the ocean, affect shellfish, with a focus on the Gulf of Maine.

Exposure to extreme ocean acidification conditions (pH 6.95) did not affect growth of adult female copepods. However, only 4 percent of their eggs successfully yielded larvae.

Swimming performance of Atlantic cod was not impaired after they had lived under ocean acidification conditions for 4 or 12 months. They did not have different metabolic rates, critical swimming speeds, or aerobic scope compared to those that lived in non-acidified seawater. (Laboratory study)

The Kiel Fjord (Baltic Sea) has large natural variations in carbon dioxide levels. When barnacles from the fjord were raised for 8-12 weeks in warmer seawater under ocean acidification conditions, their growth and condition did not change significantly. Warming increased the shell strength, but ocean acidification conditions had only weak ...

The copepod Calanus finmarchicus had reduced growth, development, and fecundity when exposed to ocean acidification conditions. However, offspring in the next generation did not have delayed development, suggesting that the species may have an ability to adapt to ocean acidification. The results also suggest that in a more acidified ocean ...

King scallops in Norway clapped their shells (an escape response) with less force after being exposed to ocean acidification conditions for at least 30 days. The number of claps was unchanged, however. Ocean acidification also narrows the thermal tolerance range of scallops, resulting in elevated vulnerability to temperature extremes. These ...

Ocean acidification levels predicted for 2100 (seawater pH 7.8) did not significantly affect growth, arm regeneration, biochemical composition, or righting behavior of a sea star. (Laboratory study)

Ocean acidification conditions suppressed the metabolism of an Antarctic pteropod by approximately 20 percent in some instances. However, the effect on metabolism depended on abundance of phytoplankton in the region and the pteropods' baseline level of metabolism. Pteropod populations may be compromised by climate change, both directly by acidification-related suppression ...

Adult green sea urchins exposed to ocean acidification conditons for 56 days ate less food and had 67 percent less growth of their sex glands (gonads). (Laboratory study)