The effectiveness of Laminaria Digitata on mitigating ocean acidification through pH analysis

In recent years CO2 levels have been rising worldwide, causing increased acidification of ocean water. Currently the average oceanic pH is 8, and while it is known that ocean water is naturally slightly alkaline, CO2 emissions continue to rise and the ocean continues to absorb these emissions. This leads to a decrease in oceanic pH as it continues to become more acidic. The pH levels of the ocean have already fallen by 0.1 in the last 200 years. A 0.1 decrease may not seem drastic but consider the fact that the human body has a natural pH of around 7.4, and if it drops to 7.2 (just a 0.2 decrease) it may lead to death. A seemingly insignificant difference in pH level can have drastic effects on the human body, thus, the same can be considered when it comes to the ocean. Ocean acidification has already impacted many different forms of marine life and will continue to do so if no method is found to prevent the further acidification of ocean water. In the following experiment, Laminaria (kelp) was tested for capabilities of neutralizing the pH of ocean water. To combat the current ocean acidification conflict, recently, macroalgaes have been in the spotlight for its capabilities of absorbing CO2 from ocean water with remarkable results. Laminarias have proven to be particularly effective at absorbing CO2 and restoring pH levels of ocean waters, justifying its use in this experiment. Through pH analysis, the effectiveness of the Laminaria was measured over a 21 day time frame, and data was collected.

Belenky B., Selma Velovic S. & Weese N., 2021. The effectiveness of Laminaria Digitata on mitigating ocean acidification through pH analysis. Journal of Dawning Research 3: 61-72. Article.


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