The Importance Of Coral Reefs

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.

In this episode of the BBC Documentary series, “The Blue Planet: Coral Sea” examines the roles and effects of coral reefs on other marine species. Coral reefs play a major part in the marine food web since they are responsible for about one quarter of all ocean species. Coral reefs are one of the most diversified species in the marine, even though they only covered a tiny portion of the earth. This species can reproduce both asexual and sexual. In sexual reproduction, larva is developed through egg and sperm fertilization. On the other hand in asexual reproduction, they can clone themselves through budding or fragmentation. Coral reefs, however, has been threatening due to overfishing, pollution, climate change, increasing in ocean acidity

Coral Reefs ecosystems only covered two tracks up to the 1970-80’s and they were biological and geological. From those years, we have been able to study and learn more about coral reefs. We have found that these reefs exist and a continued form such as none reef-building coral ecosystems can have fast structures being built. There is still quite a bit of things we will need to learn such as determining if coral communities are dependent on the abilities of reef building. They are used for structure and providing space to the ecosystem of the reef itself, having biodiversity, and to support the reef in all capabilities. Coral reefs are one of the most distinguish ecosystem in the world, but these are getting threatened by ocean acidification.

Coral reefs exist all over the world and are generally known as being one of the most diverse, intricate and beautiful of all existing marine habitats. They have many varying structures which are developed by algae and are symbiotic with various reef building corals which are referred to as, zooxanthellae (algae). There are many other factors such as, coralline algae, sponges and other various organisms that are combined with a number of cementation processes which also contribute to reef growth, (CORAL REEFS, 2015).

"Coral reefs… are fragile structures living within a narrow range of temperature, clarity, salinity and chemistry. Even a slight increase in ocean temperature, or increased CO2… can cause stresses such as bleaching… These stresses slow the rate of growth of the corrals… With some 60 percent of the world’s coral reefs now losing productivity, it’s becoming a global crisis and a scientific mystery."

Consisting of less than 1% of the world oceans, the coral reefs are ancient animals comprising of thin calcium carbonate deposits within the photic layer. Aside from its biologically diverse ecosystems, coral reefs are major source of food for millions and provides habitats and nursery areas for many marine organisms. Coral reefs also act as a physical buffer to protect the coastlines from tropical storms and erosion. In addition, many local communities rely on coral reefs to generate an income through activities such as fishing and diving. However, 75% of the coral reefs are under threat from induced impacts of humans and climate change (Burke, et al., 2011). This essay looks at the human impacts constantly being inflicted on coral reefs.

First, I am going to talk about the importance of coral reefs. Coral reefs are some of the most diverse and valuable ecosystems on Earth. They are home to 4,000 species of fish, 800 species of hard coral, and hundreds of other species. Scientists believe that there are another 1 to 8 million unidentified species (NOAA). According to the National Oceanic and Atmospheric Administration, new drugs are being developed from

A third problem the coral reefs face is strangulation by seaweed. The over-fishing of the coral reefs leads to a decrease in plant-eating fish. This leads to an overgrowth of seaweed which block the light from the coral causing death to the coral reefs. (Denecke, 2001)

The article, Warming Bleaches Two-Thirds of Great Barrier Reef , talks about how Coral reef ecosystems around the world are threatened by human and climate change. The waters of the ocean are raising due to global warming, in turn

Besides being a spectacle to look at, coral reefs are also one of the most diverse ecosystems on the planet. In addition to ⅓ of all fish (not just species) spend at least a portion of their lives on a reef, they are also home to mollusks, sponges, turtles, and a plethora of different species of coral (Basic Facts, 2014). Coral reefs also can protect coastlines from wave erosion and also help support fisherman that depend on the reef as their livelihood. Contrary to the

Conservationists around the world are putting their best foot forward in an attempt to save the coral reefs. Coral reefs today are at a high risk of damage because of all the attention drawn to them by tourists. There are some islands that make all their money through tourism and exploiting the coral reefs, giving snorkel and scuba diving trips to guests that have traveled from around the world. Many people travel to these places with amazing under water worlds and they come extremely uneducated about these beautiful masterpieces. Tourists will drop their anchors on top of corals and drive their boats over corals, causing severe damage that will take the coral years and years to replenish. There are always new ways to enhance the lives of the

There are multiple human factors that can and are affecting the coral reef ecosystems globally. One of the simpler ones is overfishing practices on the reef. An influx of people living in the tropics has caused major stress on coral reefs as a main food source. This can cause major effects on not only fish species, but the whole ecosystem. One article from volume 5, number 9 of the Conservation biology journal written in 1995 by Callum M Roberts from the University of the Virgin Islands reported that overfishing on the coral reef leads to a reduction of species biodiversity, and potential localised extinction of both the target species and other species that are indiscriminately fished from the coral reef. Loss of keystone species, for example, predators, such as triggerfish and pufferfish, of echinoderms, such as sea urchins, through overfishing can affect not just fish communities but the entire ecosystem, leading to major effects on reef processes (Callum M Roberts).

Global warming and climate change is the biggest threat the reef is having to face. Global warming is an effect of pollution caused by humans. Rapid urban development causes an increase ic carbon emissions which leads to an increase in greenhouse gases. A build-up of these gases cause temperatures to rise which will also increase the ocean temperature. This will have a negative affect on coral and put them under stress because they need a stable climate to thrive. During times of stress algae called zooxanthellae (gives coral vibrant colors) is expelled leaving the coral bleached white. This is called coral bleaching (Smithsonian). There have been two mass coral bleaching events in 1998 and 2002 (Great Barrier Reef). But, scientists anounce that these events aren’t over with yet. In fact, they will start to become more common with the rise of oean temperatures. Scientists are predicting that the biggest coral bleaching event yet will take place in the next few months (Smithsonian). Pollution and waste are also big factors in the decline of the reef. Not only do they affect the Great Barrier Reef, but many other ecosystems as well. Eight percent of the coastline along the Great Barrier Reef is used for cattle grazing or crop growing. Fertilisers, pesticides, and animal waste are all things that farms either use or produce and

Coral Reefs: A structure of calcite skeletons built up by coral animals in warm, shallow ocean water

The deterioration of coral reefs is mainly linked to human activities – 88% of coral reefs are threatened through various reasons as