Extinction Risks For Coral Reefs Essay

1229 words - 5 pages

Coral reef ecosystems around the globe are threatened by human interferences and climate change. This has led to many scientists conducting studies on global coral reef ecosystems to gain a better understanding of the cause and effects of coral reef damage. In both Hodgson’s (1999) and Carpenter et al.’s (2008) studies, they are aware of the continuous degradation of global coral reef ecosystems. Hodgson's study involved conducting a survey on global coral reef ecosystems to see whether human actions were affecting the health of supposed pristine Coral reefs. Carpenter et al. incorporated Hodgson’s study into a compiled study about the possible extinction of reef building corals due to climate change and anthropogenic effects. Carpenter’s et al. uses Hodgson’s study to show how human effects are assisting the demise of reef-building corals in conjunction with global climate change. The incorporation of Hodgson’s work into Carpenter et al's. compiled paper has been in part misrepresented. Hodgson’s study does identify that there are a low abundance of reef building coral and other indicator species in coral reef ecosystems and that these effects may be attributed to human interference. However, his study does not attribute any depletion of reef building coral to climate change or how human activities have reduced coral resilience to climate change.
Hodgson’s study involved surveying over 300 reefs across the globe. The survey was performed over two and a half months by experienced coral reef surveyors at each coral reef site. The purpose of the survey was to identify eight indicator organisms that are associated with human interference and are commonly found in global coral reef ecosystems, including lobster, grouper, Haemulidae, butterflyfish, fleshy algae, hard coral, Diadema sea urchins and sponges. Hodgson believed the greater the number of indicator organisms at a coral reef the healthier that coral reefs were and the less it has been effected by anthropogenic effects. The coral reef surveyors were instructed to find the best sites that they believed had the most living coral and were thought to be least affected by human activities. This would allow Hodgson to determine if human activities were having an appreciable effect on the supposed pristine coral reefs, which were distant from urban centers. The invertebrate survey was undertaken at two depth intervals of 3m and 10m. Four 0.5 m wide by 20 m long belts were placed on the coral reef. Over a period of 3-5 minutes the observers counted the number of invertebrates found on the belts. The coral survey was performed, by placing four 20 m long belts on the coral substrate. At 0.5 m intervals the substrate on which the belts were lying was examined and recorded.
After the two and half month survey, the data was collected and interpreted by various means: Cluster analysis, Coral Reef Health Index (CRHI) and Distance Population Index (DPI). The coral reef site that had the highest number of...

Find Another Essay On Extinction Risks for Coral Reefs

The Effects of Global Warming On Coral Reefs

975 words - 4 pages The Effects of Global Warming On Coral Reefs Graphs Missing Introduction: The effects of global warming touch every human, animal, plant, ocean, landmass, and atmosphere level on this planet. The numerous effects of global warming are mixes of "good" and "bad" results, depending on how your definition of "good" results and "bad" results are. A "good" effect, a person could say, would be for regions with normally cold temperatures to receive

Coral Reefs: Why We Must Save Them.

2262 words - 9 pages . This paper will cover what coral reefs are, what they do for us, where the coral reefs are, what they do for us, and some of the hazards to coral reefs. So just what is coral?Many corals look like stone formations or plants. But they are neither; they are in fact very fragile animals called coral polyps. According to Garrison, There are two types of corals; the first is Hermatypics from the Greek word hermatos meaning "mound builder," (435

The Effects of Global Warming on the Great Barrier Reef

922 words - 4 pages skeletons of the coral colony. According to Dr. Ove-Hoegh Guldberg, coral bleaching occurs when algae in a symbiotic relationship with the coral become dysfunctional and expelled. The algae (dinoflagellates) normally provide foods for the coral through photosynthesis. However, when the temperature increases, the ability to perform photosynthesis is completely shut down. The future of reefs The future of coral reefs is not bright. As of

The Importance Of Coral Reefs To The World

2757 words - 11 pages incredible. It has been estimated that coral reefs provide a habitat for over 4,000 species of fish (Coral Reef Diversity, 2000). This figure calculates to about 18 percent of all fish in the world. On top of this, about 7,000 different species of coral make up the world's reefs (The Coral Reef Alliance, 2000). When you add in other types of plants and animals such as plankton, clams, or octopus you can conclude that the coral reef ecosystem is the most

Coral Reefs

750 words - 3 pages as protection for certain species. Most corals sustain a symbiotic relationship with a plant-like algae called zooxanthellae. This algae performs photosynthesis and provides food for the coral. In exchange, the coral provides protection. Coral reefs provide habitats for a wide variety of species. These organisms rely on corals for food and shelter. A loss in coral reef habitat can lead to a dramatic loss of biodiversity. Many scientists are

Coral Reefs: A Diverse Ecosystem

925 words - 4 pages Coral reefs are one of the oldest and the most diverse ecosystems in the planet; because of such matter, scientists coined coral reefs as ‘rainforests of the sea. The National Oceanic and Atmospheric Administration or NOAA for short (2008) estimated that about 25% of marine life use coral reefs as safe havens from predators, breeding grounds, and feeding grounds despite the fact that coral reefs only cover a small percentage (estimated about

Coral Reefs .

1254 words - 5 pages environment very easilyespecially since it is located so close to shore. This also makes it hard for all of the species whichuse the coral reef to survive. Coral reefs are home to perhaps one-fourth of all marine species. This inturns effects the entire ecosystem of the ocean. Pollution by humans have directly or indirectly causedthe death of 5%-10% of the world's living reefs, according to marine biologist Clive Wilkinson of theAustralian Institute of

Coral Reefs Need Help

2540 words - 10 pages Beautiful beaches, a hot sun, glistening sand, and a clear ocean would make the perfect vacation, right? Many of us would enjoy being somewhere tropical. This kind of vacation won’t last much longer if we don’t start taking care of endangered coral reefs now! World government leaders should establish laws to protect them. People may ask, “If coral reefs are in such danger, why don’t we fix the problem since they provide benefits for the whole

Are Coral Reefs in Danger?

751 words - 3 pages put out a brownish zooxanthelle which causes them to lose their color. Without the zooxanthelle, the corals cannot provide nourishment for itself and this can eventually lead to death. (Encarta) 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. (University of Washington) Man-made destruction has a much wider

Coral Reefs

1325 words - 5 pages , which if not stopped it will destroy all coral reefs. Corals are animals, not plants, sunlight is the key to their survival. They need it to power the millions of microscopic algae, called zooxanthellae, that live in their tissues. The algae provides the corals with food and oxygen in return for raw materials and a secure place to live. This teamwork is what allows the reef to survive in nutrient-poor tropical seas. This relationship is

Palau Coral Reef

2354 words - 9 pages Palau Coral Reef Coral reefs are one of the most complex and colorful tropical ecosystems, rivaling rain forests in their richness of life. Coral reef organisms build massive & intricate physical structures that are home to some of the most fascinating plants and animals in the world. Their extraordinary beauty captivates visitors and their productivity provides a wealth of resources for local communities and the world

Similar Essays

Destruction Of Coral Reefs Essay

950 words - 4 pages 280p.p.m (parts per million) to about 385p.p.m till now. The scientists speculate that coral reefs will survive up to 400p.p.m but they will face extinction if they hit 500p.p.m and the reefs all around the will start eroding and will get affected. For collecting coral cores and preparing the data, Australian Institute of Marine Science (AIMS) uses specialized equipment. The equipment luminometere and densitometer are used for non-destructive coral

The Coral Reef Ecosystem Essay

980 words - 4 pages litter streets and storm drains empty into rivers and streams thatlead to our coasts. When visiting coral reefs, do not touch living coral, because not onlythere is a risk of poisoning, but it can also damage the coral.The direct impact of extinction of coral reefs would be that if the corals die off, sowould other plants and animals that depend on, and live in coral reefs for food and shelter,and this would eventually lead to the collapse of the

Degradation Of The Coral Reefs Essay

1098 words - 4 pages reefs. If the present rate of destruction continues, 60% of the world's coral reefs will be destroyed in the next 30 years. The loss of healthy coral reefs would mean the elimination of a primary source of food, income, and employment for millions of people around the world, as well as the extinction of many marine species. The reefs bring in about $400 billion a year in fishing and tourism revenues.There are several ways in protecting the reefs

Coral Reefs Essay

1562 words - 6 pages Holly KeepersEnvironmental Science6/29Coral ReefsCoral reefs are very productive ecosystems that home enormous amounts of biodiversity and are also immensely important to modern society. These reefs are habitats for about 25 percent of all the animals and plants that live in the ocean. Coral reefs support more species per unit area than any other marine environment. They provide provide protection and shelter for many species of fish, and