The effects of climate change are not limited to Earth’s terrestrial biomes, but it is also the primary factor affecting aquatic biomes. However, one of their ecosystems is the most complex and most vulnerable globally. Now, NOAA has announced that ocean color is changing across 82 countries, and 2 American regions will be most likely to be affected. If things remain unchanged, we may have to say goodbye to this highly complex and extremely important ecosystem for good, leading to devastating consequences.
One of the most complex and important ecosystems globally
When it comes to Earth’s ecosystems, environmentalists would argue that Earth does not have a fixed number of ecosystems, as their scales vary significantly. However, when collecting data for in-depth studies, three primary categories are typically used, and each has subdivisions. According to the National Geographic Society, these ecosystem categories are:
- Terrestrial
- Freshwater
- Aquatic
Aquatic ecosystems are highly vulnerable to the effects of climate change. One, in particular, has been negatively impacted for nearly 2 decades. If the effects of climate change, along with other factors, continue, we may bear witness to the destruction of this highly vulnerable ecosystem for good. NOAA has sounded the alarm that some irreversible damage has already been made, and we will have to suffer the consequences.
A change in the ocean color: NOAA’s warning
Coral reef ecosystems are the most misunderstood on the planet, as many people do not realize the important role these ecosystems play ecologically and economically. According to NOAA, coral reefs are important for the following reasons:
- Sustain the biodiversity and habitat of 25% of all aquatic species
- Protect coastal regions from tsunamis, erosion, and storm damage
- They have untapped potential in medicine and research
- They are tourism attractions
- Ensure job and food security (fisheries)
Now, their existence is being threatened. A phenomenon known as “coral bleaching” is destroying coral reef systems worldwide. Simply put, the symbiotic relationship between corals and the zooxanthellae algae is affected when ocean conditions become unfavorable. The algae leaves the coral, marking the loss of the coral’s primary food source. The coral then becomes pale or white, resulting in the “ocean color change.”
Climate change, or more specifically, rising ocean temperatures, is the primary contributor to coral bleaching, with several island nations’ existence suffering the consequences. NOAA indicates that the following factors also contribute to coral bleaching:
- Sunlight overexposure
- Significantly low tides
- Runoff that carries pollutants
The two American regions most likely to experience damage
The most well-known and the biggest coral reef system in the world is Australia’s Great Barrier Reef. Unfortunately, since 1998, the Great Barrier Reef experienced nine bleaching events, of which five were the biggest in the last eight years.
While some can survive such an event, others may be more susceptible to stress and inevitably death. NOAA’s website confirms that the Caribbean lost 50% of its coral reefs due to a mass bleaching event in 2005. Furthermore, 2024 NOAA data indicate that Puerto Rico (a Caribbean island) and the Florida Keys were the two American regions most affected by the fourth and ongoing global bleaching event.
Unfortunately, 82 countries and/or territories have been affected by this global event, which includes the Eastern Tropical Pacific, Brazil, the Persian Gulf, and many more.
It is thus our responsibility to ensure the safety and continued existence of this highly vulnerable and extremely important aquatic ecosystem. The root cause, which is climate change, should be central to this mission. By decreasing our carbon footprint and implementing protocols that lower or prevent pollution while increasing water quality, we may be able to save our coral reefs. The transition to clean energy is thus more important than ever, and experts argue that the missing link in the clean energy transition is engineering planning.
