Coral Cities Under Siege: A Tale of Survival in the Face of Climate Change
July 13, 2023 | by Tarun Jain

Introduction: The Underwater Metropolis
Let’s dive into the deep blue sea and explore the world of corals. Imagine, if you will, a bustling city under the sea, full of vibrant colors, diverse inhabitants, and a complex network of structures. This is the coral reef, the underwater equivalent of a metropolis, bustling with life and activity. But just like our cities on land, these underwater cities are facing challenges, and the architects of these cities, the corals, are feeling the heat, quite literally.
The Coral Citizens: Porites lutea, Montipora tuberculosa, and Pocillopora verrucosa
Let’s take a journey to the coast of Phuket, Thailand, where three unique coral species, Porites lutea, Montipora tuberculosa, and Pocillopora verrucosa, are trying to keep their cool in the face of rising sea temperatures and decreasing oxygen levels. It’s like trying to run a marathon in the middle of a heatwave while wearing a mask that only lets in half the air you need to breathe. Sounds tough, right? Well, that’s what these corals are dealing with.
The Struggles of Pocillopora verrucosa: The Skyscraper Architect
Imagine you’re a coral, a Pocillopora verrucosa, to be precise. You’re a branching coral, the skyscraper architect of the reef city. But the heat is on, and you’re feeling the stress. It’s like you’re trying to build a skyscraper while the sun is beating down on you, and the air is getting thinner. You’re working overtime, trying to keep up with the demands, but it’s getting harder and harder. The heat is affecting your workers, the symbiotic algae, and they’re starting to leave, causing you to lose your vibrant colors, a phenomenon known as bleaching.
The Resilience of Porites lutea: The Sturdy Apartment Complex
Now, let’s switch perspectives. You’re now a Porites lutea, a massive coral, the sturdy apartment complex of the reef city. You’re feeling the heat too, but you’re a bit more resilient. You can keep your workers, the symbiotic algae, for a bit longer, and while you’re feeling the stress, you’re holding on.
The Middle Ground: Montipora tuberculosa, The Suburban Homes
Finally, you’re a Montipora tuberculosa, a tabular coral, the sprawling suburban homes of the reef city. You’re somewhere in the middle, not as sensitive as the Pocillopora verrucosa, but not as resilient as the Porites lutea. You’re feeling the heat and the lack of oxygen, and it’s affecting your growth, but you’re still standing.
The Reality of Our Coral Reefs Today
This is the reality of our coral reefs today. They’re facing an uphill battle against the effects of climate change, and it’s affecting them in different ways. But just like in any city, every inhabitant, every structure, plays a crucial role, and the loss of even one can affect the entire ecosystem.
The Call to Action: Let’s Help Our Coral Cities
But it’s not all doom and gloom. Just as we find ways to adapt and mitigate the effects of climate change in our cities, so too can we find ways to help our coral reefs. By understanding how different corals respond to these stressors, we can devise strategies to help them. It’s like figuring out which buildings need more shade or better ventilation in our cities.
So, let’s roll up our sleeves and get to work. Let’s turn down the heat and turn up the oxygen for our coral cities. After all, they’re not just pretty to look at; they’re home to a myriad of marine life, protect our coastlines, and are a vital part of our planet’s ecosystem. And remember, every little bit helps. So, whether you’re a scientist conducting research, a diver exploring the reefs, or just someone who loves the ocean, you can make a difference. Let’s work together to keep our coral cities standing tall.
Further Reading: Dive Deeper
For a more in-depth look at this topic, feel free to dive into the full research paper here.
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