Great Barrier Reef Ocean Acidification

Improved Essays
A) What is a coral reef?
Coral reefs are underwater ecosystems that are formed by many small animals called polyps, which through their ability to excrete calcium form the limestone skeleton that they live on. As coral reefs grow they can take on three structures fringing, barrier or atoll. The Reef located along the Queensland coastline is called the Great Barrier Reef as it is separated from the shoreline by a section of deep open water. Over many years hard coral polyps form reef structures that support a variety of marine life, these corals also known as reef-building corals found within the Great Barrier Reef include brain coral, staghorn coral and branching coral. In the tissues of these corals algae called Zooxanthellae live and provide the coral with important nutrients, while the coral provides the algae with a protected environment (National Oceanic and Atmospheric Administration, 2017).
B) What is ocean acidification, and how does it affect
…show more content…
Between 1800 and 1994, the oceans had absorbed around 48 percent of the total amount of carbon dioxide from burning fossil fuels (IPCC, 2014). Therefore, the amount of carbon dioxide absorbed by the ocean would have increased considerably since then, and with the increased production of carbonic acid which releases bicarbonate and hydrogen ions, the amount of carbonate ions which are necessary in the creation of coral shells and skeletons decrease significantly. (Australian Government, n.d.) Therefore, more acidic seawater impacts coral significantly, dissolving their shells and skeletons, and hindering their ability to absorb calcium carbonate. Ocean acidification not only impacts coral and the animals that rely on coral as their main food source, but the animals that make calcium carbonate shells such as snails and clams (How does climate change affect the reefs?,

Related Documents

  • Superior Essays

    The acidification of our oceans increases the likelihood of coral reefs to be destroyed or broken down due to erosion. These nearly extinct ecosystems that are either becoming unstable or are being destroyed forces species to find another environment to make their home or to adapt in. The low survival rate of coral reefs under such harsh conditions makes the survival rate of other organisms detrimental as well because it leaves them vulnerable with the reduced amount of living spaces for fish. Leaving fish open to predators, it also has a harmful effects on a fish’s organs. Even though fish do not have shells, they are still affected by the changes that ocean acidification can cause.…

    • 1155 Words
    • 5 Pages
    Superior Essays
  • Improved Essays

    Great Barrier Reef

    • 674 Words
    • 3 Pages

    The Great Barrier Reef (GBR) is found off the northeastern coast of Queensland, Australia, in the Coral Sea of the Pacific Ocean. Scientists believe that the coral reef structure was formed 60,000 years ago, but deteriorated due to climate & sea level changes. However, the coral reefs grew over the old structure. The current GBR is about 6,000 - 8,000 years old. The reef’s abiotic factors include sunlight, soil, water, climate, & temperature.…

    • 674 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    “Runoff carries nutrients sediments, and pollution from land-based sources and deposits them directly onto our reefs.(http://wwf.panda.org/).” Too many nutrients create algal growth creating a decrease in oxygen levels leading to the condition, Eutrophication. Erosion by construction, inland or along coasts, mining, logging and farming increases sediment in rivers. This then ends up in the ocean where it smothers corals by trapping them from the light which is needed to survive. Sedimentation limits the light ability to the corals inhibiting their ability to feed and reproduce.…

    • 1378 Words
    • 6 Pages
    Improved Essays
  • Decent Essays

    Mass Floral Bleaching

    • 62 Words
    • 1 Pages

    Climate change is the greatest global threat to the coral reefs. Mass floral bleaching events and infectious disease outbreaks are happening more often now that the temperatures are rising across the reefs' water, the pH of the water is decreased. This causes the reduction of calcification rates in reef building organisms. Both climate change, and carbon dioxide contribute to these mass bleaching…

    • 62 Words
    • 1 Pages
    Decent Essays
  • Decent Essays

    At least 35% of corals in the northern and central parts of Australia's Great Barrier Reef have been destroyed by bleaching, Australian scientists say. The experts from James Cook University (JCU) say it is the most extreme case of mass bleaching they have ever measured at the World Heritage Site. Bleaching occurs when warmer water causes coral to weaken and lose the colourful algae that provide oxygen and nutrients. It has been linked to climate…

    • 76 Words
    • 1 Pages
    Decent Essays
  • Improved Essays

    Ocean acidification is detrimental to calcium carbonate life. As CO2 is absorbed into the ocean, it has a chemical reaction with water and forms carbonic acid, lowering the pH. This acid reacts with the calcium carbonate that many shellfish need to build their homes and protection, forming a different type of molecule, and depleting the ocean’s calcium carbonate resources. While it was obvious in our lab that our four mollusks, wrinkled drill, cowrie, small oyster, and large oyster, were to be affected by the acids that they were submerged in, it was unclear who would be the worst off. Our results for the hydrochloric acid were fairly inconclusive, on average they were all similar, small and large oysters lost 11% mass, while the cowrie lost…

    • 561 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    A healthy coral reef is one of the most economically valuable ecosystems there are, as they can provide us with lots of vital ecosystem services. They can provide food for billions in the form of the fish that live there, approximately half of the federally managed fisheries in the U.S depend on coral reefs, give our coastlines shelter from storms and are the home to lots of different kinds of fish and other organisms, almost 4,000 species of fish and about 800 species of hard corals all while covering less than one tenth of the ocean floor. Their rough surfaces and complex structures dissipate a lot of the force of incoming waves, thus lessening the strain on our coastlines. They also provide us with jobs in the form of fishing, recreation…

    • 179 Words
    • 1 Pages
    Improved Essays
  • Improved Essays

    Coral Reef Bleaching

    • 1177 Words
    • 5 Pages

    With the global climate changing so is the coral like many other things and sadly they are dying off because of the temperature changing. Which is causing coral reef bleaching which is when the whitening of diverse invertebrate taxa it is caused by when zooxanthellae decline and or the concentration of photosynthetic pigments within the zooxanthellae…

    • 1177 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    According to National Ocean Service (NOS) (2016), the marine life is affected by increasing carbon dioxide in the ocean as carbonate ions which are an important building block of structures such as sea shells and coral skeletons decreases. Consequently, insufficient carbonate ions present in the ocean can make building and maintaining shells and other calcium carbonate structures more difficult. Other than that, lower pH of the ocean menaces the marine life such as corals, mollusks, and crustaceans as they face a great challenge when their calcium carbonate shells or skeletons dissolve in the acidic ocean. According to Rodolfo-Metalpa et al. (2011), corals, mollusks and other marine life have shown decrease in skeletal growth due to increase in carbon dioxide level in the ocean.…

    • 407 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    “Ocean acidification is sometimes called climate change’s equally evil twin,” and for good reason: it's a significant and harmful consequence of excess carbon dioxide in the atmosphere that we don't see or feel because its effects are happening underwater”. Based on this two statement it can be derived that carbon dioxide is the main factor involve in ocean acidification.…

    • 521 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    Unfortunately, these reefs are being destroyed at an alarming rate. According to the World Wide Fund (WWF) within 25 years the world will lose 60 % of its coral reefs strict actions will not be taken. Human activities such as pollution, illegal fishing and recreational activities like diving and snorkeling are major threats. Global warming is also be contributing to their demise by raising seawater temperatures above the narrow range in which corals thrive. Natural calamities like typhoons and earthquakes may also contribute to the destruction of reefs.…

    • 246 Words
    • 1 Pages
    Decent Essays
  • Decent Essays

    Ocean Acidification Ocean acidification levels are rising due to all the CO2 in the atmosphere. Ever since the beginning of the industrial revolution people have released tons of carbon dioxide into the atmosphere. Luckily most of the carbon dioxide is absorbed into the ocean. All of the CO2 that is absorbs into the ocean is turned into a type of acid that is capable of dissolving crustaceans shells. Every year crustaceans are dying because of the amount of CO2 released into the atmosphere.…

    • 230 Words
    • 1 Pages
    Decent Essays
  • Great Essays

    While the destruction of coral reefs can also be attributed to large, destructive weather events such as cyclones, as well as the increased prevalence of destructive invasive species, the chief perpetrator of the death of millions of corals everywhere is coral bleaching. To better grasp the sheer complexity of this issue, it is necessary to break it down into the following four segments: the impact bleaching has on coastal human communities, the impact bleaching has on marine life, the science behind the entire process of coral bleaching, and what the causes of coral bleaching are. The recorded history of mass coral bleaching is a relatively short one due to the lack of data on record. It was only after the mass bleaching event that affected the Great Barrier Reef in 1981/82 that scientists began to uncover the correlation between ocean temperature and bleaching (Veron).…

    • 1770 Words
    • 8 Pages
    Great Essays
  • Decent Essays

    According to Edith Widder, “Our biggest challenges for the ocean and for the planet are problems of perception. People need to understand that species extinctions, habitat destruction, ocean acidification, and pollution are all chipping away at the resilience of the thin layer of life that sustains us on Spaceship Earth.” I will be discussing what ocean acidification is, how do the CO2 get into oceans, and what are biological impacts. Ocean Acidification is a reduction in ocean pH due to the uptake of anthropogenic carbon dioxide (CO2) by surface waters, has recently emerged as a major research area in the marine science (Hoffman et al. 2010). Carbon dioxide (CO2) diffuses into the ocean carbon cycle where molecules of CO2 enter the ocean…

    • 259 Words
    • 2 Pages
    Decent Essays
  • Superior Essays

    Ocean Acidification Essay

    • 1116 Words
    • 5 Pages
    • 5 Works Cited

    Increased ocean acidification isn’t the only thing affecting the ocean, but it is very problematic because it erodes aragonite which is a mineral of calcium carbonate. In other words it kills corals and causes the hard exoskeleton to erode. Action needs to be taken to ensure the survival of corals and the creatures that rely on coral reefs to survive. Coral reefs are sources of food for millions of people, but also are sources of medicines. As coral reefs disappear so do the organisms that are mutualistic to it.…

    • 1116 Words
    • 5 Pages
    • 5 Works Cited
    Superior Essays