They are home to a quarter of all marine species, yet occupy only 0.2% of the ocean. Coral reefs thrive in warm, shallow waters that provide shelter for many different forms of bacteria, fungi, seaweeds, reptiles, mammals, crustaceans and over 4,000 species of fish. According to the ecologist Renee Cho, “The reefs hold an annual global economic value of $375 billion, providing food and resources for over 500 million people in 94 countries and territories” (Cho). However, the reefs are in a detrimental crisis that could end in chaos. Coral bleaching is occurring around the world. Heat stress from global warming triggers the symbiotic relationship between polyps and zooxanthellae to collapse. This results in the expel of photosynthetic algae, leaving them bleached white. The coral reefs are in great danger and humanity is the one to blame. The best way to save what is left of the reefs is to reduce our man-made contributions to global warming and reconstruct new reefs before it is too late.
Between 1979 and 1990, more than sixty episodes of coral bleaching have occurred around the world due to human impact. Since then, even more events have taken place because of water temperatures rising. Within just the Pacific Ocean the Great Barrier Reef has been affected by coral bleaching the most severely, but Hawaii and Japan have also been affected. Australian scientists informed CNN that, “More than two-thirds of the coral in Australia's Great Barrier Reef is experiencing shocking
As atmospheric carbon dioxide levels continue to rise, global warming will increase ocean temperatures and, along with that, the frequency and severity of bleaching events. In 2010, one of the hottest years in recorded human history, reefs bleached throughout the Caribbean and the Indian Ocean and off the coasts of Thailand, Cambodia, Malaysia and the Philippines. Without the necessary reduction in the production of emissions, the death of the Great Barrier Reef will result in 6 billion dollars less in the economy and the loss of more than 50,000 jobs, If the oceans' corals were to collapse, the whole food chain will
Coral reefs not only protect coastlines and beaches from wave damage and erosion, but also are the basis for the fishing and tourism industries. Dying reefs is a worldwide problem, and evidence shows that 10% of the entire world’s coral has died, and 60% will die by 2020 if existing conditions continue (NOAA 2000). The reason that the Australian Great Barrier Reef is so important is because not only is it the largest barrier reef in the world, but it is also one of the most evolved models of how to best manage and protect the world’s largest reef system (Ornitz 1996). It extends for 2,340 kilometers (km), covers 345,000 square km and contains 2,900 reefs, 300 coral cays and 600 continental islands (White 1999). Historically, it has been ahead of the rest of the world in terms of recognizing and addressing problems associated with reef degradation.
Coral reefs are found in shallow tropical waters along the shores of islands and continents. Coral bleaching is a topic that gets left in the dust. Not many people really pay attention or show much interest in it. Widespread bleaching, involving major coral reef regions and resulting in mass coral mortality has raised concerns about linkage of the events to global phenomenons including global warming or climate change and increased UV radiation from ozone depletion. Corals provide a lot not just for us humans but for marine life as well. Marine Biology provides information about how bleaching happens and how it affects the coral. Buchheims’ article is full of logos and a few pathos while the other source is full of ethos. In The Nature Conservancy’s director Stephanie Wear provides us with lots of professional opinions
Coral bleaching usually occurs when the surface of a sea with coral in it becomes too warm for the coral. When the water heats to as little as one degree higher than normal, coral expels the algae living in its tissue, which causes it to turn completely white. The rise in temperature of the sea surface has been linked mainly to global warming. Other causes of coral bleaching include oxygen starvation caused by an increase in zooplankton, increased solar irradiance, increased sedimentation, bacterial infections, changes in salinity, herbicides, low tide and exposure, cyanide fishing and elevated sea levels. Bleaching events in 2016 were unprecedented, nearly 90% of the coral in the Great
This is an explanatory synthesis on the impacts of climate change on coral reefs. Climate change is affecting coral reefs in a negative way. Due to the increase of sea temperatures, coral reefs are becoming bleached. When a coral reef becomes it causes them to expel the algae, leaving the corals white1,2,3,4. In the essay, “A framework for understanding Climate Change Impacts on Coral Reefs” by Joshua Clinner (2016), he addresses that when coral reefs become bleached they have reduced growth rates. The article, “Five Species We Stand to Lose if Coral Reefs are Destroyed and What You Can Do About it” by Jenna Bardroof (2014), emphasizes that coral bleaching is a serious threat to coral colonies and specific mammals
Worldwide we are facing an epidemic of large-scale Coral Reefs bleaching themselves white. Although white coral is not dead it is likely to die shortly after bleaching. The main problem is global warming, this causes overfishing, pollution and rising ocean temperatures with more acidity. Global warming is an issue that affects our planet, especially in the ocean. This problem has also an economic and political impact because "If the reefs vanished, experts say, hunger, poverty and political instability could ensue."
An Australian-led team closely examine the impact of major bleaching events from 1998, 2002, and 2016. The bleaching occurs along the entire Great Barrier Reef, which is 1,400 miles long. In 2016, scientist found that the reefs experienced four
The coral reef’s ecosystem are in major threat of the current bleaching events. Coral reefs are the main marine environment, which includes a variety of over 4,000 fish, and 800 different type of hard coral (“Corals”). Over 25 percent of marine animals are supported by the coral environment (“Coral Reefs”). The reefs are a key element of the ocean’s ecosystem (“Coral Reef Destruction”). Water temperatures are estimated to keep rising in the decades to come, which intensifies coral bleaching and other problems like black band disease, and white plague. These illnesses cause a majority of the coral to die, which will then lead to their ecosystem to plummet (“Global Warming”). Research as estimated that one to eight million organisms are yet unknown to scientists
One particularly visible sight that brings climate change to the attention of the public is the series of large tracts of bleached coral on the Great Barrier Reef resulting from unusually warm summers. The Great Barrier Reef is an Australian icon, symbolic of the wealth of Australia's biological diversity. It is the nursery to fishing industries and is visited by thousands of tourists each year, bringing hundreds of millions of dollars into our community. While the high visibility of coral bleaching has made us aware of this impact of climate change we should be equally concerned
Climate change is gradually making the coral and sea life in the reef become warmer, this is due to the sudden rise in greenhouse gasses which is creating a hotter world for us. ‘’The global surface warming trend for 1997–2015 is approximately 0.14°C per decade’’. If this trend continues it will then eventually heat up the ocean too much and then all sea life will slowly die out. ‘’Scientists project a significant loss of biodiversity within a decade, and at worst a 95 percent decrease in the distribution of Great Barrier Reef species by late this century’’. This is what could happen if we don’t find a solution to this
Australia’s scientists have released its comprehensive map of the Great Barrier Reef’s bleached corals revealing that less than 36% of the areas explored have not been severely bleached yet. The bleaching is caused by abnormally hot waters due to El Niño and climate change. These high temperatures cause corals’ symbiotic algae, which is their crucial food source, to become scarce and toxic, forcing the corals to expel it. Removing the algae turns the coral bone white and the coral begins to starve. Of the 911 individual reefs that researchers surveyed, a large 93%-843 reefs-experienced some kind of bleaching. Furthermore, the Great Barrier Reef is home to more than 1,500 different kinds of fish, 6 of the worlds remain seven marine turtle species
Coral reefs are threatened by global warming. They can only live in waters between 18 C and 30 C. Therefore, with the increase in temperature of the surrounding water, there has been an unprecedented increase in the number of coral bleaching events during the past 2 decades (which have had some of the warmest years in history). When ocean temperatures get too high, coral polyps lose the symbiotic algae inside them, causing them to turn white, or "bleach," and eventually die.
Whenever someone hear about bleaching, they automatically think about this strong potent chemical used for clothing to make it stain-free, the pungent smell when they open the door to a pool, or when someone plans on dyeing their hair to a lighter color. Bleaching is very useful for humans, but is it good for the environment? Has anyone heard of coral bleaching? Coral bleaching has nothing to do with chemicals at all, in fact it is called coral bleaching because when coral is bleached, it becomes white like when a t-shirt is bleached (though too much bleach can eat a hole). Coral bleaching has been a problem these past few years on the East coast of Australia’s Great Barrier Reef. It has been declining in its beautiful
Sadly, only 7% of all corals have managed to be unharmed from the dangerous threat of climate change, resulting in coral bleaching. It is said that by 2050… however, there is still a bit of hope. Current marine biologists have found coral reefs deep down in the great barrier and are not being affected by climate
Coral reefs are living structures comprised of the exoskeletons of a marine organism known as polyps. Polyps are animals that have a symbiotic relationship with algae that lives inside the polyps and provides the coral with energy through photosynthesis, which is the process of turning light into energy, and the coral provides a safe place for the algae to reside in. Bleaching in corals occurs when environmental stressors cause the coral to eject the algae from itself, causing the coral to lose its pigment and its main way of producing energy (Kenneth et al. 540). It is estimated that 30% of coral reefs around the world have been damaged or destroyed by bleaching, and about 60% of the world’s coral reefs are at risk from bleaching (Lönnstedt et al 1178-1185).