(LATO) IN LOWERED SEAWATER pH - Central Visayas Campus ...

At 5% level of significance, the data showed a significant difference on the weights of
the samples in the three trials among the four groups. Table 1 shows the t-test
statistical analysis results.
Table 1. t-Test Results
Variables
F
Values
166.44
p(eq)
2.76E-10
t 3.7264 0.001173
Welch t 3.7264 0.003278
Permutation t test: 0.001
A related study conducted by Battistoni et al. in 2007 focused on the effects of
ocean acidification on a turtle grass meadow. The results showed that ocean
acidification negatively affected the health of turtle grass because of the decrease in
growth and an increase in leaf senescence of plants in acidified treatments. They had
also concluded that the acidic environment appeared to be detrimental to epiphytic
calcifying algae, as algal cover on turtle grass leaves was reduced in the acidified
tanks.
Another study by Hauton et al. (2008) showed that changes in the pH of
seawater will potentially cause a disruption to the internal acid/base balance in wider
range of marine species. To some extent, this can result to hypercapnia which had
been shown to cause metabolic suppression in protostome invertebrates, although it is
clear that differences do occur and some species have a better tolerance than others
(Michaelidis et al., 2004).
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