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The Destruction of the World’s Coral Reefs
Impact on coral reefs
Coral Reef Degradation Its Environmental Effect And Human Impact
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Abstract
Located in tropical ocean waters, coral reefs provide priceless resources to both human and marine life. The leading natural cause of destruction among the coral reefs is global warming. Other natural causes are earthquakes, hurricanes, cyclones, and typhoons. The destruction to the coral reefs from these natural disasters is minimal compared to the dangers caused by man. Man-made destruction has a much wider impact on the health of the coral reefs. This destruction includes over-fishing, damage from anchors, aquarium industry, overgrowth of seaweed, and being smothered by sediments.
Are Coral Reefs in Danger?
Located in tropical ocean waters, coral reefs provide priceless resources to both human and marine life. They exist in an area about 30 degrees on either side of the equator. Coral reefs are home to more species than any other marine ecosystem. This includes over 1500 types of fish and 500 different types of algae. (Encarta) However, nearly 60% of coral reefs are in serious danger due to both natural and man-made causes.
The leading natural cause of destruction among the coral reefs is global warming. Global warming causes the bleaching of coral reefs to occur. Bleaching is a response to stress by the coral reef that happens when the water becomes to warm. The coral then put out a brownish zooxanthelle which causes them to lose their color. Without the zooxanthelle, the corals cannot provide nourishment for itself and th...
He asks a question in his speech, “Can we solve the problems confronting us?” and then shortly after he answers, “Well, the answer is an unequivocal and emphatic, yes.” expressing the power of America by using great word choice. By using the words unequivocal and emphatic we see that Reagan is confident in America and his people. After stating the above, later on in his speech he says, “I do not believe in a fate that will fall on us no matter what we do. I do believe in a fate that will fall on us if we do nothing.” showing us Americans must work hard. Ronald Reagan clearly does not think making America great will just happen, he believes that people must work hard to achieve greatness. Reagan also says, “With the idealism and fair play… we can have a strong and prosperous America…” allowing us to see that greatness is there we just have to work for it.
Coral reefs around the world are in danger. One of the causes is global warming, which has been increasing the temperature of the ocean water resulting in coral bleaching. This essay will focus on damage occurring to the Great Barrier Reef.
This article discusses how important the organisms symbiotic with coral reefs are, as well as how important coral reefs are to our environment. Also explained is how natural and non natural things things like hurricanes and overfishing affects them. A study is quoted about how water acidity also plays a role in the bleaching of corals. Lastly, restoration and conservation efforts are discussed and how we could possibly help our oceans.
Humans have a very large effect on the ecosystems of coral reefs. Sensitivity of coral reefs causes them to be more susceptible to harmful anthropogenic practices. Some of these are sedimentation, global warming, recreational activities, poison fishing, blast fishing practices, water pollution, and coral mining. All of these very different practices can effectively end up with the same results; the mortality of coral reefs around the world. Coral reefs are an important ecosystem of the world, and support many different industries and millions of people.
Coral bleaching is when the tiny algae that lives in the coral which causes it to be bright and colourful, gets so stressed out when the water temperature exceeds the limit that it can handle, which then makes the algae
Leading scientists advise climate change will cause increases to the frequency and intensity of extreme weather events. Rising sea levels pose a significant risk to coastal communities, while the world’s oceans could become too acidic to support coral reefs and other calcifying marine organisms. Coral reefs contain only six per cent of the area of the Great Barrier Reef, yet they provide critical habitat and food for numerous species in the ecosystem. However, climate change has already impacted coral reefs in the Great Barrier Reef as corals are very helpless against its potential impacts. Eight mass coral bleaching events has occurred since 1979, triggered by unusually high water temperatures. And because of this, zooxanthellae (photosynthetic algae) leave their tissues and corals will have no more colours hence ‘bleaching’. Without the zooxanthellae, the corals that remain gradually starve to death. Once the coral dies, fish and a multitude of other marine species are soon affected. Rising sea levels and more frequent and intense storm surges will see more erosion of Australia’s coastline, causing community and residential
Bleaching is when the ocean water become 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.” (Cave and Gillis). When a coral bleaches, it is more of like a self defense mode, which makes it turn white. The coral loses its food source as well. The downfall of this is that without the cooler waters, the corals could die of starvation or disease. Cooler waters from below can help a bleached coral bounce back to its natural state. However, if the water stays too warm for an extended period of time, “the corals don't just bleach, they cook and they die very quickly,.” (Westcott). Throughout time, much of the corals near Cairns and northward have lost the most corals. Hughes states that, “near Cairns, the Great Barrier Reef has lost 47 percent to 83 percent of their coral and as you go northward, the Great Barrier Reef has lost 11percent to 35 percent of its corals.” (Cave and Gillis). In another report, “a study last year found the largest die off of corals ever recorded with about 67 per cent of shallow water coral found dead in a survey of a 700km stretch.” (Johnston). In 2016 and 2017, there were back to back bleaching events. According to CNN reports, “back to back bleaching events in 2016 and 2017 have devastated a 1,500 km (900 miles) stretch of the UNESCO World Heritage Site.” (Westcott). Before the 2016 bleaching event of the Great Barrier Reef, there have only been two bleaching events, 1998 and 2002. According the Hughes, “only 9 percent of the reef has avoided bleaching since 1998.” (Cave and Gillis). That means that over 90 percent of the Great Barrier Reef has been affected by coral bleaching at least once in the past 19 years.
While historically cheerleading has been viewed as a hobby, it has evolved from glorified fans yelling on the sidelines to hard working athletes competing for national titles, and it is time for it to be named an official sport. Cheerleading is usually correlated with the negative stigma of being conceited, unintelligent, and unathletic. In television shows, mass media, movies, and popular culture, cheerleaders are rarely shown as being smart or kind. In many instances, they are shown in revealing uniforms as the subject of attention from a star football player. This may have been the essence of cheerleaders in the 60s; however, cheerleading today is much different. Thousands of cheerleaders from all over the world practice hundreds of hours
Cheer, a diverse and dangerous sport is a very foggy subject for many. The majority of the population would say cheer is just a group cheering on a sports team. Before being able to define what cheer is, one must first look at current day competitive cheer. How cheer gained its stereotypes lays in its history, and rapidly evolved into a completely different function. With cheer being the number one cause of sports injury for girls under twenty, twenty thousand deaths from stunting, and seventy percent of girls sports injuries in high school, the statistics raises an eyebrow as to just what cheerleaders are doing. Cheer went from chants, to stunt groups, to worlds championships in just a century.
The increase in ocean temperatures are causing the reef to die out; reefs structures don’t have the ability to keep up pace with the ever so changing climate 4. Rigel suggests that coral reefs will eventually die out from the erosion of the warm ocean4. The increase in climate change is leading to ocean acidification. Much of the gases that enter our air from pollution also dissolves into the ocean. With this occurring, corals cannot absorb the calcium they need to maintain their skeletons. The stony skeletons that support coral reefs will dissolve. If nothing is done to stop so much carbon dioxide from going into the atmosphere, this will increase and more and more coral reefs will be destroyed and die
Coral reefs are well known for their colorful array of marvelous sights including a parade of exotic flora and fauna. They are said to be the foundation for a quarter of marine species, and are a crucial support for human life as well. The coral reef ecosystem is a diverse collection of species (ranging from microscopic to larger-than-life in size) that interact with each other and their physical environment. If any piece of a coral reef is harmed or removed the entire community can be seriously affected, even to the point of collapse. Unfortunately, human impact has resulted in long-term stresses that, unlike the short-term stress of natural disasters, coral reefs are not as capable to recover from. “Approximately half of the world’s coral reef ecosystem resources are considered by scientists to be in 'poor' or 'fair' condition and have declined over time due to several anthropogenic threats” (“Status of Corals” par. 2). Through poorly administered commercial practices, carelessness and ignorance among the common people, and human aggravated natural processes coral reef destruction has become a serious issue afflicting the world’s biodiversity and it’s intricate biosphere mechanics (“Human Impact on the Great Barrier Reef” 1) (“What Are Coral Reefs?” 1).
Coral reefs are a wondrous, colorful haven for an abundant array of marine plant and animal species. Many people have described them as the “rainforests of the seas” because of the biodiversity found in and around these precious ecosystems. On November 22, 1996, President Clinton gave remarks on the International Coral Reef Initiative in Australia. In his speech he stated, “Pollution, overfishing, and overuse have put many of our unique reefs at risk. Their disappearance would destroy the habitat of countless species. It would unravel the web of marine life that holds the potential for new chemicals, new medicines, unlocking new mysteries. It would have a devastating effect on the coastal communities from Cairns to Key West, Florida — communities whose livelihood depends upon the reefs.” These words outline the importance of coral reefs and the impact that they have on the environment, world economy, and humankind.
It is thought that rising sea levels will lead to some reefs to drop below their ideal water level. If the depth is too deep, the amount of sunlight reaching the corals is narrowed down making it challenging for the coral’s algae to photosynthesize. The corals’ skeletal density risk reduction making the corals weaker and vulnerable to storms. Healthy coral reefs are able to tolerate sea level transitions but on the other hand, weakened reefs are not as capable to high sea level. Climate change is now causing severe weather events to occur more frequently than before affecting coral reefs. In coastal area, the resistance for corals are weakened leaving corals vulnerable to storms. A single storm can wipe out a whole colony but the corals do not heal fast enough than needed. Waves from hurricanes typically break apart corals causing damage that may not heal. Shallow tides threaten reefs by exposing corals to the sun during the day time causing corals to dry out and are at risk of being destroyed by storms. As the weather worsens and the corals’ natural protections are exposing, corals are threatened compared to
Corals provide shelter for nearly one quarter of all known marine species. The reefs are home to over 4000 species of fish, 700 species of coral, and thousands of other forms of plant and animal life. Living coral reefs are the foundation of marine life, and this also means that they are essential for human life, but all over the world they are dead or dying because people are destroying them at a very fast rate. Already 10% have been lost, and there are predictions that 705 of all corals on the planet will be destroyed in 20 to 40 years unless people stop doing what they are doing now – i.e., pollution, sewage, erosion, cyanide fishing, bad tourism.
In conclusion, I would like to say that before writing this paper, I had no idea how important coral reefs were to the earth. I have learned a lot and I think that if more people were informed about the positive capabilities of them, humans wouldn't be so careless about them.