Coral reefs, which are underwater structures created by calcium carbonate secretions, are some of the richest interdependent ecosystems on Earth. According to Wikipedia, coral reefs occupy less than 0.1% of Earth’s ocean surface, yet they provide a home for 25% of all marine species. Often referred to as the “rainforests of the ocean,” coral reefs are home to thousands upon thousands of species of plants and animals (“Coral Reef”). Not only are they an important part of ocean environments, but coral reefs are also extremely important and beneficial to humans; these reefs protect shorelines and provide countless people with food, jobs, and income sources. However, coral reefs are disappearing at an extremely alarming rate. From overfishing to pollution to sedimentation, the world’s coral reefs are in grave danger and humans must actively work to protect and restore these oceanic rainforests.
Coral, which is a sedentary coelenterate of warm and tropical seas, comes in two forms: either hard or soft. According to reefed.edu, soft corals are “soft bodies made up of a large number of polyps connected by a fleshy tissue.” Meanwhile, hard, or “stony,” corals consist of a solid, limestone skeleton. Hard and soft coral can also be easily distinguished by the number of tentacles a coral has. Soft corals have eight tentacles on each polyp, while hard corals have multiples of six tentacles per polyp (ReefED, “Hard Corals”). Hard corals are also able to come together to form the basis of coral reefs, while soft corals cannot build reefs (ReefED, “Soft Corals).
Coral reefs are limestone ridges built by tiny, coral animals called coral polyps. These reefs form when a single, free-swimming coral larva attaches itself to a rock or another f...
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...rs” the reef and prevents light that is necessary to the coral’s survival from reaching the reef (48). Another major environmental threat to coral reefs is pollution. Pollution can come from a wide array of sources and have a variety of adverse effects on coral reefs. Some common pollutants of coral reefs include sewage, silt, urban and industrial waste, oil, fertilizer runoff, pesticides and other chemicals. Common effects of these pollutants include overgrowth of algae and poisoning of the plants and animals within the reef (DuTemple, 45).
DuTemple points out that there are also many threats to coral reefs relating to humans’ fishing and recreational activities, such as poison fishing, blast fishing, overfishing, and careless tourism/human contact. Fishermen sometimes stun fish residing in coral reefs by shooting cyanide, an extremely toxic poison into the reef.
Earth, an endless source of wonder and beauty, produced the Great Barrier Reef. Hustling and bustling, the Reef thrives like a busy city, teeming with life. Sheltering thousands, corals, maintain the well-being of the Reef; however, the world threatens its nature and delicacy. Populations growing and technological advances increasing, the world becomes more and more disconnected with the natural world, posing an alarming risk for the planet we live on. Although many organizations try to keep the oceans clean, because of human interference and unnatural occurrences, the Great Barrier Reef needs scientific help to adapt corals to new conditions for means of survival, putting pressure on the Australian government to save their ocean environment.
Around the world, their are beautiful places called “the seven wonders of the natural world”. These sites are fantastic because of there fascinating views and the fact that they were naturally made, not by humans. One of these seven natural wonders of the natural world is the Great Barrier Reef. The Great Barrier Reef is located off the coast of Queensland, Australia. The Great Barrier Reef was formed by corals growing on submerged islands. The sea level then continued to rise, “leading to more corals growing and forming.” (Zimmerman). The Great Barrier Reef is “a mosaic of 2,900 individual reefs” and can be “seen from space and is not only the world's largest coral reef system but also the largest structure
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.
All over the world coral reefs play an important part in our environment. Not only are the reefs colorful and beautiful to look at but the coral reefs house several different types of fish and other sea creatures. Coral reefs have started to decline over the years due to “climate change, El Nino events, overfishing, pollution and other pressures” (Newnham 1). A healthy coral reef can also collapse due to a natural disaster (Newnham 2). There can be several different reasons why a coral reef has started to decline or has been destroyed.
The Great Barrier Reef is home to a remarkable number of organisms. The coral itself is made up of the skeletons of tiny, flowerlike water animals called polyps, held together by a limestone substance produced by a type of algae. Hundreds...
One explanation for dying coral reefs is increasing levels of carbon dioxide. As humans burn fossil fuels carbon dioxide builds up in the atmosphere. There is research showing that due to increased levels of carbon dioxide that the carbon dioxide has soaked into the ocean making the ocean more acidic and causing the reefs to die quicker (Endangered Oceans, 2009: pg. 70). When the ocean becomes more acidic it has more effects on the biodiversity within the ocean.
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.
Soft corals are grouped in the phylum Cnidaria, class Anthozoa, and order Alcyonacea. Their distinguishing characteristic is that their polyps always bear eight tentacles which are on both edges fringed by rows of pinnules (Fabricius and De’ath, 2002). The common name “soft coral” comes from the fact that they have no massive external skeleton as compared to the more commonly studied hard corals.
Now that corals have been briefly described we can see why the effects of climate change damage coral reef systems. Ocean acidification is one result of climate change. Acidification is caused by an increase of carbon dioxide in our oceans and leads to a decrease in the pH levels of seawaters. This pH decrease reduces the ability of corals to make their hard skeletons. Rates of coral calcification on the Great Barrier Reef and many other reef systems around the world have declined by 15-20% since 1990 due to increasing thermal stress (De’ath 2012). It has already been mentioned that the oceans are absorbing almost all of the excess heat from climate change. This effects coral reef systems in what is known as coral bleaching. The term bleaching refers to the loss of corals’ colors. A coral’s color is the result of the zooxanthellae present. When water becomes too warm the
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.
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).
When corals bleach they not only put themselves in danger as they become highly breakable, countless species relying on the coral reef for safekeeping no longer have a durable dwelling area once the algae is gone (Marshall, & Schuttenberg, 2006). Additionally, humans are also negatively impacted by coral bleaching because the substantial amount of economic benefits that they provide:
Coral reefs are huge contributors to many of your medicines you have in your cabinet and are also ingredients in your pesticides and cosmetics. The destruction of coral reefs are happening in a multitude of ways. Whether it be from Coastal development, Overfishing, pollution or Global climate change we need to help protect the reefs. A solution could be to put up more no-entry zones and sanctuaries but that only addresses some of the problems. No one safeguard can be expected to solve this issue. I believe that the Cayman Islands Government is doing better that other countries in protecting its reefs but I believe better options are still up for grabs and I think that Honorable Premier Alden McLaughlin can bring about that change we need. In this paper I will be addressing why we need coral reefs. I will also be addressing the problems and offer a list of solutions including: innovative technology to detect temperature changes, recycling facilities, and better controlled marine protected
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.
Coral reefs need to be preserved for many reasons. In this paper, I will discuss a few of them. First of all, they house a collection of diverse organisms, and contribute to fisheries which provide food items such as fish, crustaceans, and mollusks. Furthermore, coral skeletons are being used as bone substitutes in reconstructive bone surgery and may be able to provide important medicine, including anti-cancer drugs and a compound that blocks ultra-violet rays, they even help reduce global warming by taking carbon dioxide out of the air. These reefs provide a habitat for many species.