Coral bleaching happens when corals lose their vibrant colors and turn white. But there's a lot more to it than that. Coral are bright and colorful because of microscopic algae called zooxanthellae. The zooxanthellae live within the coral in a mutually beneficial relationship, each helping the other survive.
- What is coral bleaching effect?
- What is the effect of coral destruction?
- What is coral damage?
- What factors affect corals?
- How does the coral reef affect humans?
- Why do corals expel algae?
- What is the cause and effect of coral reef degradation?
- How does coral reefs affect the environment?
- How do coral reefs impact humans?
What is coral bleaching effect?
When water is too warm, corals will expel the algae (zooxanthellae) living in their tissues causing the coral to turn completely white. This is called coral bleaching. When a coral bleaches, it is not dead. Corals can survive a bleaching event, but they are under more stress and are subject to mortality.
What is the effect of coral destruction?
As the coral reefs die, coastlines become more susceptible to damage and flooding from storms, hurricanes, and cyclones. Without the coral reefs the ocean will not be able to absorb as much carbon dioxide, leaving more CO2 in the atmosphere.
What is coral damage?
Coral reefs are dying around the world. Damaging activities include coral mining, pollution (organic and non-organic), overfishing, blast fishing, the digging of canals and access into islands and bays. Other dangers include disease, destructive fishing practices and warming oceans.
What factors affect corals?
Pollution, overfishing, destructive fishing practices using dynamite or cyanide, collecting live corals for the aquarium market, mining coral for building materials, and a warming climate are some of the many ways that people damage reefs all around the world every day.
How does the coral reef affect humans?
Coral reefs protect coastlines from storms and erosion, provide jobs for local communities, and offer opportunities for recreation. They are also are a source of food and new medicines. Over half a billion people depend on reefs for food, income, and protection.
Why do corals expel algae?
But when the ocean environment changes—if it gets too hot, for instance—the coral stresses out and expels the algae. As the algae leaves, the coral fades until it looks like it's been bleached. If the temperature stays high, the coral won't let the algae back, and the coral will die.
What is the cause and effect of coral reef degradation?
Water pollution is perhaps the most obvious cause of coral reef destruction. Reefs are harmed when oil, fertilizer, and human or animal waste are dumped in the area. These elements can end up changing the chemical makeup of the water, but the waste can also block life-giving sunlight to the reef.
How does coral reefs affect the environment?
Coral reefs protect coastlines from storms and erosion, provide jobs for local communities, and offer opportunities for recreation. They are also are a source of food and new medicines.
How do coral reefs impact humans?
Coral reefs protect coastlines from storms and erosion, provide jobs for local communities, and offer opportunities for recreation. They are also are a source of food and new medicines. Over half a billion people depend on reefs for food, income, and protection.