Investigating The Levels Of Water Essay

942 Words Oct 31st, 2016 4 Pages
The two variations that were applied to tanks 2 through 5 each had to do with either raising the temperature or raising the pCO2 levels of the water in the tank in which the coral species were being kept. One tank had an increase in both levels. Tank 5 saw an increase in just pCO2 levels (raising from 400ppm to 1500ppm). In regards to both the pH level and the Calcite dissolution tank 5 saw the biggest reaction for both species in those two levels compared to the control groups levels of those species. The pH of the water dropped from 8.05 to 7.55 and both species saw large changes in the calcite dissolution. It is safe to say that for these two categories of collected data pCO2 levels acted in a single parameter way to greatly alter the pH and Calcite. However, as for the bleaching percentage, the porites species saw the largest impact, in tank 4 where both the temperature and pCO2 levels were raised (25 degrees Celsius to 28 degrees Celsius and 400ppm to 750ppm, respectively). For this tank the temperature and pCO2 levels acted in a synergistic way to cause the greatest effect on the porites species in terms of the bleaching percentage. As for the Acropora species, it saw the biggest impact of its bleaching percentages in tank four. It is also important to note that the Fv/Fm readings for these two species were both reported as red in tank four, tying tank four for the worst result report in the experiment with tank 5. Altogether, it is safe too safe the response of two…

Related Documents