Survival of pteropods in Puget Sound, Washington, may not be greatly affected by present ocean pH levels and those projected for the near future, although their shells may be more prone to dissolving. (Laboratory study)
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The common sea star (Asterias rubens) appeared to withstand the effects of reduced seawater pH, at least for short-term exposures of 15 to 27 days, with no significant changes in the strength of its tube feet or the RNA/DNA ratio of its tissues. (Laboratory study)
Marine phytoplankton have many characteristics, such as rapid cell division rates and large population sizes, that may enable them to adapt to ocean acidification and other types of global change. This paper reviews findings from previous studies to evaluate whether this adaptation is likely to occur, and it stresses the ...
Calcification rate of pteropods dropped 28 percent at pH levels projected for 2100. This result supports the concern for the future of pteropods in a high-CO2 world, as well as of those species dependent upon them as a food resource. (Laboratory study)
When larvae of Mediterranean pteropods were cultured in pH 7.82 water, they had malformations and less shell growth. At pH 7.51, the larvae did not make shells but survived and showed normal development. In a natural setting, the smaller shells or lack of shells would have both ecological and biogeochemical ...
Although pteropods are able to build shells at low aragonite saturation state, the production of their shell appears to be very sensitive to decreased pH. (Laboratory study)
Increased CO2 and temperature acted together to increase the growth of algal turfs, which produced twice as much biomass and covered four times as much space. Experimental removal of algal turfs led to greater establishment of young kelp. The findings suggest that ocean acidification and warming could potentially cause a ...
Adult copepods living in acidified water had lower egg production and hatching success. (Laboratory study)
Health of Atlantic halibut may be affected by moderate ocean acidification—by itself and combined with warmer temperatures.
This study used Earth system models to examine how four of the major stressors of ocean ecosystems—warming, acidification, deoxygenation, and changes in primary productivity—may evolve over the 21st century.