how do humans cause coral bleaching

As carbon pollution is emitted into Earth’s atmosphere, it traps heat and causes temperatures to rise. Many coastal and island communitiess depend on coral reef fisheries for their economic, social, and culture benefits. Rising ocean temperatures cause thermal stress and coral bleaching, increasing the risk of infectious disease spreading among the coral. If this continues for more than eight weeks, the coral can die. Coral reefs cover less than one per cent of the ocean floor but support a quarter of marine species, providing them with food and shelter. Coral bleaching occurs when ocean waters get too warm, driving algae away from the reef and prompting a change in the coral. Threats to coral reefs: Overfishing. Bleaching events are attributed to a number of factors, including pollution and extreme low tide, but the most common (and widespread) is the change in water temperature thanks to global warming. Pollution (e.g., … Rising sea levels result in sedimentation, which smothers reefs. Reef bleaching occurs when extreme water conditions cause corals to expel the internal microorganisms that give them their vibrant colors. Coral bleaching is the ghostly face of climate change. Corals can recover from bleaching by recruiting algae … Reef Bleaching. Sometimes, bleaching … An increase of just one degree Celsius for four weeks can cause bleaching. As human activities cause increases in greenhouse gases, the climate changes and the ocean becomes more acidic. Coral bleaching also occurs in saltwater reef aquariums. As human population and development expands in coastal areas, the landscape is altered, increasing land-based source of pollution and threatening coral reef health. Corals are paying the price for our reliance on mining and burning fossil fuels like coal and gas. Threats to coral reefs: land-based sources of pollution. The bleaching may lead the coral reef to death slowly, it also shows that the algae and phytoplankton inside the coral reef is died and can’t distribute food for coral. When corals lose their color, it is known as "coral bleaching." Increases in seawater temperature can cause coral bleaching through the loss of symbiotic algae. Coral bleaching began receiving attention after it was first observed on coral reefs in the South Pacific in the 1990s. Coral reef fish are a significant food source for over billion people worldwide. Coral death was further accelerated by warmer waters, the team reports in Proceedings of the Royal Society of London B. Those are some from many causes of coral bleaching and so when the temperature and pH change it will let the bleaching occur. While some coral reefs can recover from bleaching … Human-caused climate change is causing an "utter tragedy" to one of the world's largest coral reef systems, according to Australian researchers. 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