...Describe the conditions which provide the best environment for the growth of coral and explain how coral may be threatened by changes to those conditions. A coral reef provides one of the most important natural habitats in the world, sheltering enormous amounts of biodiversity with its solid calcium carbonate skeleton. More than 25 percent of all fish biodiversity on the planet Earth is associated with the coral reef ecosystem. Coral reefs require fairly specific environmental conditions in order to thrive. Coral reefs and the zooxanthellae algae living within the cell walls of coral polyps must have adequate sunlight and warm salt water - water that gets no colder than 64.4 degrees Fahrenheit (18 degrees Celsius).Optimal conditions for coral growth require water temperatures between 73.4 and 84.2 degrees Fahrenheit (23 to 29 degrees Celsius). Coral reefs survive best in the waters between 30 degrees north and 30 degrees south of the equator, mostly in the Pacific and Indian oceans. They also thrive in clear waters with little or no floating particles that can filter out or block direct sunlight. Shallow-water coral grows approximately 3.9 inches (9.9 centimeters) per year, given these optimal conditions. For example, the coasts alongside Oman are an ideal place for coral growth. While tropical shallow-water coral reefs have been studied much more extensively, there are also species of coral that live in deep-water conditions, from about 50 to 2,000 meters (about 165...
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...The coral bleaching from different perspectives Introduction Coral reefs are highly productive ecosystem that also habitats for coastal animals and offer services to human communities (Kubicek, Muhando and Reuter 2012, p. 1). Coral reefs are places for many fishes and other living creatures in the sea to hide and live. Coral reefs also have a huge impact to human communities. Coral reefs and the beauty of living creatures that live within them have become major attraction for tourist and income for local communities. Unfortunately, human activities have caused coral reefs destroyed because of activities such as overfishing, diving, chemical pollution, reef mining and many other things (Carey 2000, p. 147). This activities lead to coral bleaching, which will become danger for many creatures that live in it. The Great Barrier Reef has lost half of its half coral reef in the last 27 years, and 10 per cent of the damage is caused by coral bleaching (De'ath 2012). Coral bleaching however impact many perspectives. From science perspective, coral bleaching has been a threat for many coral species and fishes that lives in it for they are becoming extinct and destroyed (Kubicek, Muhando and Reuter 2012, p. 1). This will leads to the less variety of the coastal ecosystem riches and incur social and economic loss to its social community. Coral bleaching also have impacts to the indigenous people. Indigenous people have used coral reef and its resources as dependence for their food supply...
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...international policies to help protect coral reefs? Section 1: Coral Reefs are an important ecosystem that our planet needs to function correctly. Coral is a living organism that forms in colonies which can stretch out for hundreds of miles long and are then called coral reefs. These coral reefs are habitats for a large number of marine species. There are about 600,000 km of coral reef worldwide (State of the Reefs). Most reefs today are about 8,000 years old, and there are records of some being as much as 2.5 million years old (Dimitrov). The ecosystems of coral reefs have the “largest (amount) biodiversity per unit of area on earth” (Dimitrov). Scientists have discovered 93,000 coral reef species; however some estimate that there could be from 950,000 to as much as 9 million different species of coral reef (Dimitrov). Coral reefs are the second largest ecosystem next to tropical rainforests on Earth. The deterioration of coral reefs is a huge warning sign for everyone internationally to implement more policies on coral reef conservation. The problem that is happening internationally is the deterioration of coral reefs. Coral reefs are one of the most endangered ecosystems worldwide. For the first time in history they will be included on the World Conservation Union’s red list of threatened species (Oliver). According to the United Nations Environment Program and the Nature Conservancy, “around 30 percent of the world's coral reefs are already damaged, some irreparably...
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...Coral reefs form some of the most diverse ecosystems on earth. They occupy less than 1% of the worlds ocean surface, about half the area of France, yet they provide a home for 25% of all marine species, including fishes, molluscs, echinoderms and sponges. They are most commonly found at shallow depths in tropical waters, particularly in the Pacific Ocean. Coral reefs deliver ecosystem services to tourism, fisheries and shoreline protection. The annual global economic value of coral reefs has been estimated at $375 billion. It is believed to have emerged more than 540 million years ago. New species originate 50% faster in coral reefs than in any other habitats. The fossil records show that reefs have been remarkably successful in surviving through large environmental disturbances. However the combination of drastic environmental changes that we're seeing today, such as degraded water quality, depleted fish stocks, coral bleaching, ocean acidification and loss of habitat causes them to be under great threat. Coral reefs are perhaps one of the greatest but, least known of wonders of our world. There are three different kinds of coral reefs. There are fringing, barrier, and atoll. Fringing reefs are attached to margins of an island or continent, rough, table like surface, as much as 1 kilometer wide. On their seaward side they slope steeply to the ocean floor. Fringing reefs grow in shallow water near the shore and prefer dry climates with limited river runoff. There are...
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...Coral Reef Mitigation Plan XXXXXXXXXXXXXXXX SCI/275 October 9, 2011 XXXXXXXXXXXXX Coral Reef Mitigation Plan A recent report estimates that 27% of the world's reefs are already gone and severely damaged and that another 58% are degraded and threatened. Here in the United States, in faraway places, and in the planet’s most secluded areas are experiencing coral reef crisis. Coral reefs survival are endangered from a controlling mixture of stresses which include global warming, bleaching, carbon dioxide, water pollution, sedimentation, coastal development, damaging fishing practices, coral mining, tourism, and ozone depletion. Threatening behavior from human activities, either direct or indirect, create considerable hazards to coral reef ecosystems, and the human populations that rely on them. Ocean warming caused from global warming and ozone depletion is severely hazardous to coral reefs. Coral organisms are extremely receptive to temperature changes. Water temperature increase may cause mass bleaching among coral reefs which causes coral polyps to expel zooxanthellae from the stress caused by ultraviolet radiation or heat. Zooxanthellae supplies reef corals with up to 80% of its energy, making zooxanthellae necessary for coral survival (Coral Reef Alliance, 2010). Zooxanthellae provide color for corals so when released corals become white or bleached. Coral have a chance to recover from bleaching effect only if normal conditions return promptly enough, but in most...
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...A current problem impacting the island of Tonga is the coral reef is being damaged. One solution to this problem is using our water supply for things we need and not for things not needed. According to coral reef.gov, the text states don't leave unwanted or nets in or out of the water. Any kind of litter pollutes the water and can harm the reef and fish. This shows that if people leave unwanted fishing gear on or off of the shore of Tonga or any kind of litter pollutions in the water, it can harm both the fish and coral reef. This shows that if people leave unwanted fishing gear on or off shore of tonga or any kind of litter will pollute in the water, and can harm both the fish and coral reefs. According to coral reef, the text states the...
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...planet, etc. Coral reefs are believed by many to have the highest biodiversity of any ecosystem on the planet—even more than a tropical rainforest. Occupying less than one percent of the ocean floor, coral reefs are home to more than twenty-five percent of marine life. Why is that important? A highly biodiverse ecosystem, one with many different species, is often more resilient to changing conditions and can better withstand significant disturbances. In addition, ecosystem services—benefits that humans receive from natural environments—are often greater in highly diverse places. Coral reefs, thanks to their diversity, provide millions of people with food, medicine, protection from storms, and revenue from fishing and tourism. An estimated six million fishermen in 99 reef countries and territories worldwide—over a quarter of the world’s small-scale fishermen—harvest from coral reefs. The biodiversity of reefs can also be appreciated simply for the wonder and amazement it inspires. Brightly colored, spotted, striped, speckled, or otherwise eccentrically patterned fish swim in and around coral reefs; some specialize in eating different kinds of algae, keeping corals from being smothered by their potentially deadly competitors. Sharks, groupers, and other predatory fish keep populations of smaller fish and other organisms in balance. Parrotfish actually eat the reef itself. They scrape at the coral to get to the small algae (zooxanthellae) living inside the coral polyp, then...
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...The Coral Reefs Ecosystem Hidden beneath the ocean water, is the coral reefs team of life. Fish, corals, lobsters, clams, sponges, seahorses, sea turtles are only a few of hundreds of thousands of creatures that rely on reefs for their survival. I think that coral reefs are beautiful and I find that ecosystem of a reef is fascinating. Despite the fact that Corals look like rock or plants they are definitely marine animals. Corals life begins in tropical water as floating larvae. After a short period of time the larvae attaches itself to a hard surface and becomes a polyp. Corals are related to the jellyfish some people say that a coral looks like a jelly fish upside down due to a coral having a lot of tiny polyps. A single coral polyp may be as large as a saucer or small as the top of a pinhead. There are billions of polyps working together in a cooperative colony. Generation after generation creating a limestone skeleton that forms the framework of the beautiful coral reefs. Coral Reefs grow very slowly. It could take up to a hundred years for a reef to grow 3ft. (Best&Bornbusch, 2001) Coral Reefs have been in existence for over 215 million years and located in tropical waters. The earths ocean floors cover more than 70% of our planet's surface and 97% of that water is found in the ocean. As everyone knows ocean water is salty and the reason being is due to the salinity in the water. The two ions found in seawater are chloride and sodium. The salt in the ocean's water has...
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...Coral reefs occupy only 0.2% of the ocean floor, yet they are the most biologically diverse marine ecosystems known today, and support over 25% of all marine organisms (Yip). Due to the massive amount of marine species that populate coral reef habitats, maintaining healthy reefs is crucial for the continuation of marine biodiversity. In past years, the increase of mortality rates in coral has been caused by a number of factors, including wide-spread stress and disease. In the Indo-Pacific, coral reefs have been declining at a rate of approximately 2% per year for the last 20 years (Yip). Coral reef fish biodiversity is crucial for the sustainability of the coral reef ecosystem, as well as for the ability of the coral reefs to provide services...
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...Coral reef's are one of the most diverse ecosystems in the world, inhabiting around 25% of all marine species; 4000 of which are fish and another 800 are hard coral (Reaka-Kudla, 1997). Many different factors by both human and natural causes propose threats to the coral reef's. Some of which, if carried on, could mean that the coral reef's will subside. Coral reef's are a major habitat for marine organisms. But if their population declined, this wouldn't just affect different species that live there, it would also affect humans as well. Many different species of fish live in the reef's that humans live off so if overfishing continues in the coral reef's then humans will have to find an alternative food source or try fishing elsewhere. However...
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...The dissolution of coral reefs is a growing consequence to human activities, sedimentation, and ocean acidification. While efforts and monetary investments towards regulation of anthropogenic factors and ocean acidification can project small feats of improvement, it will require time to observe whether or not reduction of these factors correlate with restoration. Coral transplantation appears most effective because it directly combats dissolution of coral reefs and aims to return coral ecosystems. Furthermore, human activity including over fishing, oil disposal, sewage, and chemical pollution influence the warming of ocean waters attribute to only a portion of the disruption of diverse coral reef ecosystems. Sedimentation presents itself as a problem because it buries the coral reefs underneath rocky layers and ultimately hinders their growth. Additionally, ocean acidification is a large constituent due to its “impact on rates of biogenic calcium carbonate production by the dominant reef calcifiers: corals and coralline algae” which affect the calcium carbonate structures that hold together the coral reefs (Pandolfi et...
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...Coral reefs are one of the biological cornerstones of the ocean and are fundamental to many marine ecosystems worldwide. Whilst they have countless uses to socioeconomic and tourism sectors globally, their role in the biological sense is of far greater value. By looking at their importance to the biology of the oceans, a greater understanding of the level in which they need to be protected can be formed. One of their key characteristics is their ability to provide shelter and protection to countless marine organisms. This is done so efficiently that entire ecosystems form solely around coral reefs and the habitats they create. These reefs also act as a vital buffer for waves and strong ocean conditions. By dissipating the wave energy, they...
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...Raekwon Filmore Clarkson University Department of Biology Spring 2018 BY-445 Background Coral reefs are one of nature’s most diverse ecosystems. The variation in organisms and plant life is what drives many scientists to understand how something so unique can occur. Because coral reefs are so diverse, they help the environment they inhabit in various ways. Coral reefs are biologically diverse and economically important to the ecosystems of the planet. The reason for this importance to the ecosystems is that it provides services that are essential to human life and industries through fisheries, coastal protection, building materials, new biochemical compounds,...
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...The first major threat to coral reefs is global warming or climate change. The warming of the oceans is detrimental for coral reefs because they are very particular about what water temperature they live in. Also the warming of the oceans causes glacier to melt, thus causing rising seas. " The Intergovernmental Panel on Climate Change has found that sea level is rising at a rate of .12 inches per year—60 percent faster than the .08 inches per year it predicted in 2007" (Global Reef Threats). Rising seas causes coral reefs to be deeper in the ocean. As something gets further away from the surface it common sense that it will receive less light. This will cause the coral reefs to grow slower. This is a problem considering some coral reefs already...
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...extent for these supports are the coral reef ecosystems, which are the most diverse ecosystems in the sea. “High diversity density gives rise to intense species competition and the subsequent organism capability to construct exotic defensive and offensive chemicals, many with pharmacological value” (Addey 228). Only about ten percent of reef biodiversity is known, and only a minor fraction of that ten percent has been explored for active compounds. Unfortunately, these coral reefs are facing several...
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