When they were exposed to air at low tide, photosynthesis by three species of intertidal seaweeds was not saturated at present-day levels of atmospheric carbon dioxide (CO2). They may benefit, while exposed to air, from atmospheric CO2 rise.
A coralline alga had reduced calcification in ocean acidification conditions. (Laboratory study)
When a coralline alga was exposed to both ocean acidification and solar UV radiation, its growth, photosynthesis, and calcification rates were greatly reduced, compared to when it was exposed only to solar UV radiation. The calcified layer of the alga appeared to provide protection from UV. The results imply that ...
Calcification rates of the blue mussel and the Pacific oyster decline with increasing ocean acidification. Mussel and oyster calcification may decrease by 25 percent and 10 percent, respectively, by the end of the century. (Laboratory study)
Higher levels of carbon dioxide (CO2) enhanced growth of a green seaweed (Ulva rigida). (Laboratory study)
Aerobic scope and cardiac performance of Atlantic halibut increased following 14–16 weeks exposure to elevated temperatures and even more so in combination with CO2-acidified seawater. However, the increase does not translate into improved growth. Instead, long-term exposure to CO2-acidified seawater reduces growth at temperatures that are frequently encountered by this ...
This study used two methods to estimate the exchange of carbon dioxide between the atmosphere and ocean.
Deep-water prawns (Pandalus borealis) exposed to severely acidified seawater (pH 6.86) for 16 days were able to compensate by accumulate buffering bicarbonate ions at levels comparable to those reported for shallow-living decapod crustaceans. (Laboratory study)
The Arctic spider crab (Hyas araneus) appears to have a threshold of ocean acidification beyond which it fails to acclimate. In a 10-week experiment, it had a limited ability to adjust to effects of ocean acidification with and without also experiencing a warmer temperature. (Laboratory study)
A species of phytoplankton changed how it used carbon and energy when it was exposed to higher CO2 levels. The effects differed depending on whether the CO2 level change happened over 15-16 generations versus 33-57 generations. (Laboratory study)
