Abstract
The increasing of atmospheric <TEX>$CO_2$</TEX> are changing the pH (ocean acidification) and temperature of the sea. Although the effects of ocean acidification on calcifying organisms have well-documented, only a few studies have examined the combined effects of ocean acidification and elevated temperature. This study investigated the effects of ocean acidification and elevated temperature for 2100 on survival and growth of juvenile abalone, Haliotis discus hannai. Ocean acidification was simulated by bubbling <TEX>$CO_2$</TEX> into seawater at concentrations of 1,000 and 1,500 ppm, and temperature was set at room temperature <TEX>$+2^{\circ}C$</TEX>. Neither <TEX>$CO_2$</TEX> nor temperature had a significant effect on survival of abalone, while both significantly affected growth. There was no significant interaction between the two factors. Shell length can be used as a growth index of abalone to access the impacts of ocean acidification and elevated temperature.
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