Global Decline Of Coral Reef Abundance Are Closely Associated With Increasing Human Pressures

Corals build colonies that secrete calcium carbonate to form ocean reefs. When they're healthy, coral reefs provide shelter and food for animals all along the food chain, including the top: us. Across the planet, half a billion people rely, directly and indirectly, on corals for their living. That's why what happens to the 9,000-year-old Great Barrier Reef, as well as to other reefs worldwide, is critical. The floods in Queensland have hurt the Great Barrier Reef by funnelling into the ocean vast plumes of freshwater and agricultural runoff that could severely damage the coral. Besides the extreme rain that sparked the floods, rising ocean temperatures, changes to the ocean's chemistry and the global trade in natural resources — all symptoms of our fossil-fuel economy — are waging a multiform war on the marine

The article talks about how climate change has affected coral reefs over the past several years. Kim Cobb who is a marine scientist at the Georgia Institute of Technology said that climate change has damaged the coral, the entire reef is covered with red-brown fuzz and algae had grown over the dead coral during his last dive in the deep waters of Kiritimati Island. According to the article, Scientists believe that the damages of coral reefs are caused by the mass bleaching of coral reefs around the world, heat stress from multiple severe weather events like El Nino and climate change. As a result, more than a third of Earth’s coral reefs are threatened and many may not recover.

The ocean is two-thirds of our planet a vast blue landscape home to many biomes which according to Boyce Thorne-Miller “(ecosystem types) corresponding to sets of environmental conditions that vary with depth, latitude, and longitude” (16). However, the ocean and its biomes is under attack from the changing environment. We can see this through coral reef biomes as they make their home near the shores. Through coral reefs we can view the effects that these changes have on the ocean through how the coral reef biome is affected. Humans are a danger to the coral reefs and the wildlife that resides in the biome. The pollution being released into the environment is poisoning the coral and causes death and malformation to the wildlife. The ocean is changing due to global warming which is causing a change in the temperature and rising water levels leading to a change in the stabile areas coral can survive. The increasing acidification of the ocean is causing the coral reefs to die. I will be looking at the effects these issues cause to coral reefs biomes and the ocean to see the similarities in how they affect both.

"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.

The purpose of this research is to apply the knowledge learned about the ecology of the Hawaiian Coral Reef to a real-life situation. The coral reef stretches over 1,000 miles in the Pacific Ocean. In the Pacific Ocean, near the 124 islands of Hawaii, is the Hawaiian Coral Reef, which covers nearly 1,200 miles. Out of all the coral reefs in the world, the Hawaiian reef consists of 85% of all reefs. Coral Reefs are made of organisms, coral, and limestone skeletons. 25% of organisms are not existent anywhere else in the world. Abiotic factors are nonliving things, and abiotic factors of a coral reef are depth, light, wave motion, salinity, and temperature of the ocean. Biotic factors, living factors, is the whole coral reef,

Oceans are important when it comes to slowing down climate change, they absorbs heat and greenhouse gases but it becomes more acidic dues to carbon dioxide (Dorey, 2015). By 2045, the pH level of seawater is expected to reach 7.8, which is slightly more acidic than normal and many sea creatures will not survive in this condition (Dorey, 2015). The acidification makes it difficult for sea creatures with external shells or skeletons to develop their structures, creatures such as corals, planktons, and crabs may even start to dissolve when the pH levels are too high (Dorey, 2015). This poses a major threat to Australia’s Great Barrier Reef, affecting the food chain from plankton to the fish at the top, and ultimately damaging the ecosystem. Coral reefs are sensitive even to the slightest changes in ocean temperatures, along with the ocean’s acidity, the coral reefs are unable to grow properly nor survive storms, resulting in the mortality of certain areas of the Great Barrier Reef (Dorey, 2015). It is expected that 95% of the existing coral reefs may be lost by 2050, and creatures that rely on the reefs for shelter will suffer (Dorey, 2015). Australia’s loss in its ocean resources and Great Barrier Reef will impact the ecosystems, affecting all life as climate change occurs too

The ocean is a very delicate ecosystem in which the slightest change of pH or chemical composition will result in devastating results. Between 25 and 40% of anthropogenic carbon emissions have entered the marine area since the industrial age (Sabine et

It is estimated that by the end of the century, climate change and warmer oceans will kill coral reefs. Lubofsky follows the studies of graduate student Hannah Barkley in this article. Hannah Barkley has been studying coral health in the western Pacific. She investigates how coral reefs respond to climate change and which corals can survive in this climate change. Coral reefs “provide habitats for 25 percent of all marine species” (Lubofsky 28) and protect shorelines from storm damage. Barkley moved her research from “Cape Cod to the Rock Islands of Palau to study reef communities” (Lubofsky 28) since temperature and acidity have risen in some Palauan bays. To obtain the temperatures in the Palauan reefs, Barkley and her colleagues set up a network of underwater temperature sensors around the barrier reef and inside the lagoons. One of Barkley’s advisors, Cohen, found that “ocean warming affects coral reefs in at least two ways” (Lubofsky 29). First, an increase in temperature by 1oC can break down the symbiotic relationship between the coral and algae causing the corals to become bleached and die. Coral bleaching happens when the symbiotic relationship is gone and photosynthesis ceases to occur. Second, warming “stratifies the ocean into warmer surface layers and denser,

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

Scenario: You are marine biologist presenting a seminar titled ‘coral reefs under threat’, which discusses human impact on reef systems. A sceptical member of the audience questions whether there is sufficient evidence to support your claims, and goes on to state that maybe the issues regarding coral reefs have simply been exaggerated by the media, environmentalists and scientists.

A group of researchers aimed to quantify regional and global patterns of decline as everyone seemed to know coral reefs were declined but not at what rate. Previous studies gathered qualitative data that was difficult to combine into a comprehensive understanding of what global coral reef patterns are like. They amassed and analyzed data on coral reef cover from 1968-2004 in the Indo-Pacific ocean which has 75% of the world’s coral population. The researchers presented their data with the intention of informing the public to effect better coral management and restoration practices. Their hypothesis was that coral reef decline would occur all over due to the ocean-wide increase in temperature and that it vary between areas depending on nearby

Coral reefs are indispensable to multiple life forms, particularly human beings. In response to concerns, many environmental

In “Sponge erosion under acidification and warming scenarios: differential impacts on living and dead coral”, Amber Stubler, Bradley T. Furman, and Bradley J. Peterson acknowledges that climate change and ocean acidification will disproportionately impact the growth of calcifying organisms in coral reef ecosystems. Simultaneously, sponge bio-eroders, will be a growing threat as seawater pH level decreases. Stubler, Furman and Peterson emphasizes that while species vary in degree of vulnerability, the effect of acidification on coral health, calcification, survival, and reproduction has been revealed to be negative. Concurrent inflation of sea surface temperatures as result of elevated C02 will impact coral calcification and survival on reefs.

The first thing that comes to mind when we think of coral reefs is either an image of Nemo swimming through those finger-like plants in the ocean or a jumble of those plants we see on postcards and on television, thinking that one of them (but which one?) must be a coral reef. On the contrary, however, coral reefs are far from being plants but are in fact, an ecosystem filled with corals, both hard and soft, and endless reef species. The coral itself is made of many coral polyps, delicate limestone-secreting animals, which serve as a skeleton for the coral. The impact of these reefs on both marine life and humans is immense, but as of today, we have lost almost twenty to twenty-five percent of the world’s coral reefs and about another