Seaweed Cultivation

Reduce Carbon in the atmosphere

Healthy food comes from healthy waters


One of the global phenomena related to the environment which has recently been widely discussed by environmental experts is global warming. The main cause of global warming is an increase in the concentration of so-called greenhouse gases (mainly carbon dioxide) in the atmosphere, trapping more heat and warming the earth.

There are two main strategies that humans can adopt to minimize the accelerating rise in global temperature:

I- Reduce carbon emissions from: anthropogenic activities and carbon sources that can increase the concentration of carbon dioxide in the atmosphere, such as fossil fuel energy use, forest fires, etc.

II- Increase carbon sequestration from the atmosphere through promoting the ability of vegetation or plants to utilize and sequester carbon dioxide through the process of photosynthesis.

Related to the potential utilization of vegetation as carbon sinks, especially in coastal areas, seaweed cultivation has developed in several regions. Cultivated seaweeds have the potential to absorb carbon through photosynthesis.

South Sulawesi Province is the largest seaweed producer in Indonesia. In 2016, South Sulawesi
Province’s produced 3,409,048.2 tons of seaweed from mariculture and brackish-water pond culture, The cultivated seaweed production of 2,357,244.7 tons was produced from a cultivation area of 46,354.6 ha.

Besides the economic implications, mass production of seaweed is also considered to have significant potential in terms of carbon sequestration.

Seaweeds are a group of aquatic plants considered to have a high capacity for carbon sequestration compared to terrestrial plants because of their high productivity. The binding of carbon by seaweeds (photoautotrophic macroalgae) has the potential to reduce the release of CO2 into the atmosphere and can help reduce the rate of global warming.

Estimated carbon sequestrated per hectare (per cultivation cycle and per year) by seaweeds cultivated in the sea (coastal waters) and in brackish-water ponds (Mashoreng et al 2019)

Based on the estimated capacity of one hectare of cultivated seaweed to sequester carbon (during each cultivation cycle and over a one year period), the total carbon dioxide that could be sequestered by the current level of seaweed cultivation in marine waters of South Sulawesi was estimated as 2,656,625 tons of CO2.yr.

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