Coral Reefs: The Rainforests of the Sea

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

They protect against coastal flooding, wave damage, storm surges, wave damage, and also they provide homes for lots of fish.. Coral reefs are dying because of the increase in ocean acidification that is caused by the increase of CO2 in the atmosphere. Coral reefs may stop growing if the CO2 concentration levels are high which is expected over the coming decades according to the article. Coral reefs are also vital for people and business. In the article it was reported that more than 30 million small-scale fisherman and women depend on coral reefs for their livelihoods, specifically in Indonesia where fish supported by the reefs provide the primary source of protein.

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.

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

Located in tropical ocean waters, coral reefs provide priceless resources to both human and marine life. The leading natural cause of destruction among the coral reefs is global warming. 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. Man-made destruction has a much wider impact on the health of the coral reefs. This destruction includes over-fishing, damage from anchors, aquarium industry, overgrowth of seaweed, and being smothered by sediments.

Barrier reefs are defined as, a coral reef running parallel to the shore but separated from it by a channel of deep water ("About The Reef“). These reefs are all over the world and are some of the most beautiful sites to see. In fact, one of the seven wonders of the natural world is a barrier reef. The Great Barrier Reef is in Australia off the Queensland coast ("About The Reef“). The reef stretches around 1,800 miles down the Queensland coast, and can get to 40 miles wide ("About The Reef“). The Great Barrier Reef is home to many animals including: 1,500 species of fish, 200 types of birds, and 20 different types of reptiles ("About The Reef “). The amount of life that lives in these waters just add to the amazement of the Great Barrier Reef. Many people go to this reef for many different reasons. People go to see the amazing coral reefs, humpback whale breeding, and many endangered species ("About The Reef”). Although there are so many beautiful aspects of the Great Barrier Reef, there are many things that make it a Not-so Great Barrier Reef.

Coral reefs are wonderful places in the ocean they can be found in shallow water where it is warm and unpolluted. Funny thing is even though they look like plants they are living organisms. There are many kinds like lettuce coral, fire coral, and leather coral. There is also a lot of sea life like cuttlefish, manta ray, and reef whitetip shark. Speaking of sharks, the coral reef is also where many sharks feed.

Of those threats, climate change is the one that has the biggest impact on the reef. The rising temperatures are causing bleaching.When water is too warm, corals will expel the algae, called zooxanthellae, living in their tissues causing the coral to turn completely white (NNOA). Without it, the coral starves, but doesn’t have to die. It can recover from this, but has a higher fatality rate than corals who didn’t go through the bleaching process. The poor water quality is a result of increasing sediment, nutrients and contaminants entering coastal waters in run-off from agricultural, industrial and urban land uses (“Poor Water Quality”). The nutrients and sediments boost algae growth, which effects the corals growth. Overfishing is the final major threat. Once the fisherman catch most of the fish in the area, they must go lower. This leads to them hitting the coral and causing further damage. Although they have these threats, they can overcome it to continue to

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

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.

“Coral reefs are extremely important for biodiversity, providing a home to over 25% of all marine life. They are also vital for people and business. They provide nurseries for many species of commercially important fish, protection of coastal areas from storm waves, and are a significant attraction for the tourism industry”

Coral Reefs are distinctive and unique to the areas around them, boasting a variety and biodiversity of species that can rival any terrestrial area. Although the reefs only cover 0.2 percent of the earth's oceanic floor, an estimated one million species found around coral reefs (NASA)—around 25% of our marine species (Coral Reef Alliance). Beyond science, reefs generate an estimated $375 billion each year (Bunting). Coral reefs benefit the aquarium, fishing, and ecotourism industries, creating at least 500 million jobs (Chasing Coral).

     Coral reefs are one of the oldest types of living systems on earth, and certainly one of the most spectacular (Goreau, 1987). They are massive underwater structures formed by the limestone skeletons of tiny invertebrate animals. Reefs house a greater diversity of body forms, chemistry, and animal phyla (thirty-two compared to the eight that inhabit the most biodiversity ecosystems on land). Phyla comprise the second largest category of living things, after kingdoms.