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    Home » pH » Page 6

    pH

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    Reduced pH sea water disrupts chemo-responsive behaviour in an intertidal crustacean

    Ocean acidification conditions interfered with the chemoreception, or “smelling”, that hermit crabs use to find shells and prey. The hermit crabs moved less, had lower flicking [...]

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    Impacts of ocean acidification on respiratory gas exchange and acid–base balance in a marine teleost, Opsanus beta.

    In the gulf toadfish, respiratory gas transport and acid–base balance are affected by ocean acidification. While the full physiological impacts are not known, the changes could compromise [...]

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    Losers and winners in coral reefs acclimatized to elevated carbon dioxide concentrations

    This field study in Papua New Guinea examined the effects of natural carbon dioxide seeps on coral reef ecosystems. At reduced pH, coral diversity was lower, population replenishment and [...]

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    Future high CO2 in the intertidal may compromise adult barnacle Semibalanus balanoides survival and embryonic development rate.

    In ocean acidification conditions (pH 7.7) embryos of an intertidal barnacle developed more slowly. Survival of adult barnacles dropped by 22 percent, and the mineral structure of [...]

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    Effects of elevated seawater pCO2 on gene expression patterns in the gills of the green crab, Carcinus maenas

     Ocean acidification did not have a major impact at the cellular level in the gill epithelia of green crabs. (Laboratory study)

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    Post-larval development of two intertidal barnacles at elevated CO2 and temperature

    Author(s): Helen S. Findlay, Michael A. Kendall, John I. Spicer & Stephen Widdicombe  Findlay, H.S. 2010b Link:  http://link.springer.com/article/10.1007%2Fs00227-009-1356-1 [...]

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    Ocean acidification and the loss of phenolic substances in marine plants

    Studies in Italy and in the Chesapeake Bay, USA, found that seagrasses lost phenolics, which protect against grazing and disease, when living in high CO2/low pH conditions. The findings [...]

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    Early reproductive stages in the crustose coralline alga Phymatolithon lenormandii are strongly affected by mild acidification

    In the early life stages of a coralline alga, mortality and growth abnormalities increased with small changes in pH. However, rate of growth remained similar, potentially by re-directing [...]

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    Effects of ocean acidification on early life stages of shrimp (Pandalus borealis) and mussel (Mytilus edulis)

    When larvae of blue mussels were kept in ocean acidification conditions predicted for 2100 (pH 7.6) there was no marked effect on fertilization, development, [...]

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    Elevated level of carbon dioxide affects metabolism and shell formation in oysters Crassostrea virginica

    Juvenile oysters living in acidified seawater had higher mortality rates and less growth of shell and soft-body tissues. They also had higher metabolic rates, likely because of the higher energy [...]

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