Coral Reef Bleaching Sat, 28 Jul 2018 15:48:01 +0000 en-US hourly 1 The Great Barrier Reef Coral bleaching Sat, 26 Jan 2013 12:42:55 +0000 Coral Bleaching the Great Barrier Reef.


The Great Barrier Reef which is made up of around 2,900 individual reefs along with 900 islands having the length over 1,600 miles (2,600 kilometers) has an area of almost 133,000 square miles (344,400 square kilometers ).

The figures explain the reason why it is the largest reef in the world.

The reef is  situated in the Coral Sea, near to Queensland in northeast Australia and the only place in the whole earth which can be detected from the outer space.

Great Barrier Reef

The Great Barrier Reef is the largest structure made by the living creatures named coral polyps. In 1981, it was nominated as a World Heritage Site.

The Great Barrier Reef is a habitation of diversity of life including more than 1,500 fish species, thirty species of whales, the dwarf minke whale, Indo-Pacific humpback dolphins, the endangered dugongs, clownfish, red bass, red-throat emperor, and forty-nine species mass spawn, numerous species of snapper, coral trout, sea snake and many more.

According to BBC News, 2nd October, 2012 the Great Barrier Reef has already bleached over half of its coral cover in the last 27 years.

The results show that coral cover declined from 28.0% to 13.8% between 1985 and 2012.

A research published in the Proceedings of the National Academy of Sciences journal claimed that after analyzing on the condition of 217 coral reefs.

The outcomes disclosed that coral cover from 28% to 13.8% – an average of 0.53% a year which done a total loss of 50.7% in the past 27-year period.

The main reasons of the coral bleaching are storms, an outbreak of coral-feeding starfish and climate change. The observations are done over 2,000 surveys of 214 reefs between 1985 and 2012.

The Great Barrier Reef forms the most productive ecosystem.

But the reef faces the bleaching problem for the last several years due to the climate change, pollution, outbreak of crown-of-thorns starfish and fishing, shipping accidents, oil spills, and tropical cyclones, Skeletal Eroding Band, a disease of bony corals.

The greatest peril to the Great Barrier Reef is to be the climate change like ocean warming.

Mass coral bleaching had already been occurred in the summer of 1998, 2002 and 2006. Pollution and declining water quality are the other crucial danger faced by the Great Barrier Reef.

Great barrier reef

The flood water brought more than 90% of this pollution through farm runoff including overgrazing, excessive fertilizer, and pesticide. The crown-of-thorns starfish kills the coral polyps which are the main reef building ingredients.

According to a study by the RRC (Reefs Research Centre) an outbreak of the crown-of-thorns starfish made a loss of 66% of live coral, in 2000.

Fishing and shipping are also threating to the coral life.


Enhanced by Zemanta
]]> 0
Coral Reef Conservation in U.S.A Fri, 11 Jan 2013 01:50:12 +0000 Coral Reef Conservation in U.S.A


With the rapid decrease in coral reef different organizations as well as individual have taken it upon themselves to conserve the coral reefs.

They have organized camps, as well as educating commutes living in the habitats of coral reefs on the need to conserve them. This has become a concern since most of the habitats of the coral reefs encourage tourist activities thus leading to growth of the economy of a given country.

With the decrease of coral reef, tourist activities have decreased in some areas endangering the economy of these countries. In addition coral reefs are sources of food and shelter to fish species which in turn are used as food by human beings as well as a source of economical empowerment.

Among other issues affecting the coral reefs includes pollution and climate change.

Coral reef,

Coral reef, Shark Island, French Frigate Shoals (Photo credit: USFWS Pacific)

Among such organizations that have tried to save the situation is the United States of American Coral Reef Task Force.

This task force was established in 1988 in order to lead the U.S. government efforts to protect and conserve the coral reefs as well as their ecosystem. It has been helping in building strategies, partnerships and providing support on ground to conserve the coral reefs.

The task force also comprises of government officials and scientists who come together to discuss on the issues facing this organisms.

Among the research done by this task force, it has been established that in the warmer seas and oceans there has been coral bleaching. Among the deduced cause of this bleaching is increased carbon dioxide emissions especially from factories are said to have made the oceans more acidic thereby changing the pH value of the ocean waters.

This has affected the coral reefs in maintaining their structure.

Coral Reef Task Force

The United States of American Coral Reef Task Force, has tried to made some recommendations that if implemented can have a positive impact in the fight against coral bleaching. In their recommendation they argue coral reefs can be strengthened by focusing more on the climate change through reducing pollution and restoring the coral reefs habitats with clean and clear water that promotes t he growth of these organisms.

They have then recommended for the Clean Water Act which they describe as a powerful tool in their efforts to realize this dream.

Since the implementation of this act, industries have been able to discharge their pollution directly into the ocean and harbor a thing that has seen a lot of progress across the states and territories in the United States.

The act also provides authorized setting of local water in quality standards. This is to eliminate the chemical water standards of quality that endangers coral reefs.

Coral Reef The future.

Coral Reef Task Force

This image depicts all of the areas that the Millenium Coral Reef Landsat Archive covers. Red dots indicate coral reef data at the website: (Photo credit: Wikipedia)

Despite this progress there some clause of the act that has not been implemented fully. Among them is reducing the pollution from source points for example the sewerage treatment and industrial plants. If the recommendations by this taskforce are to be adhered and be implemented fully there US government will have gone a mile in saving the danger facing the coral. In turn economies of the affected states will increase and the effect of global warming will be reduced to some extent.


Enhanced by Zemanta
Effects of coral bleaching on fish communities Sat, 05 Jan 2013 15:32:39 +0000  

The effects of Coral bleaching on fish communities and the effect is so clear especially with the rise in global warming that has seen rise of temperatures hence the death of the most essential organisms especially s the Microscopic algae that has a symbiotic relationship with the coral reefs.

The effects of Coral bleaching on fish communities has seen hundreds of fish species being affected especially in their structure of their communities. Some of the major effects of coral bleaching were experienced in the 1997-1998 El Niño especially in the Indian Ocean. This article describes some of the researched effects of coral breaching on fish species.

effects of Coral bleaching on fish communities...

There have been changes in the size, biodiversity and composition of fish communities following the decline in coral reefs. Since most of fish have depend on the coral reefs for food and bleeding grounds, decline of the coral reefs has seen more fish dies and even their eggs being easily destroyed by their predators.

Coral bleaching has been accused of disturbing the structure of the fish surrounding. This is because as the coral reefs die they become over populated with algae which dominate the previously coral reefs dominated zones. This has an effect on fish since they have to migrate to other grounds to look for foods as well as bleeding grounds.

Effects of Coral bleaching on fish communities.

In addition a lot of fish may die as a lot of the effects of Coral bleaching on fish communities grows out of control. As mentioned earlier coral reef bleaching leads to either death or weakening of the coral reefs. In turn they are unable to control the amount of carbon dioxide levels in the water where fish due to lack of oxygen which forms a major component for survival in the water. Again many fish may die due to deprivation of air especially if out of water. This is because many fish moves in swarms of thousand of fishes and given that the ocean water is not stable there is lots of water waves most of may be swept to the dry land hence deprived of their medium for oxygen.

The change of environment especially after the death of the coral reefs exposes the fish to more dangers. There some species of algae family that attacks the fish infecting them with poison that halts the normal operation of the fish thus killing thousands of fish.


More so, the change of the structure that does not favor the fish since some predators may invade the region invading on the fish.

From the above description, it is obvious evident that coral bleaching has endangered the lives of many fish species. Indeed there is much worry that more of fish may be affected. This would mean decline of economy as a result of decreased fishing activities as well as tourist activities in the regions that are well habited by coral reefs. Though various organizations, governments of the affected countries and some individuals have been concerned, coral bleaching should be announced an international disaster and educate people on some of the factors that contribute to coral bleaching especially global warming.

People should also be made aware of the value of the coral reefs to their lives and lives of other organisms.

Enhanced by Zemanta
Coral Reefs Conservation Thu, 09 Feb 2012 03:39:42 +0000 Coral Reefs


Coral reefs are important habitats that are part of underwater’s ecosystem. It is the shelter and the source of food to many underwater species. It is sensitive and somewhat fragile. If something happens to it, ocean life will be threatened and it may lead to human insufficient supplies of seafoods. We will all be affected. In the recent generation, it has been that 10% of coral reef has been destroyed and a much larger percent has been threatened.

Damaged or destroyed coral reefs can actually be found in more than 93 countries and the coral reefs in pacific of South & South East Asia, East Africa and the Caribbean have the greatest risk. Coral Reef destruction is mainly caused by human. Human activities produced global warming which is the main “murderer”of coral reefs.

coral reef

Underwater Ecosystem made balance by Coral Reef

Coral reef conservation.

Government, Non-government and International organizations has been practicing coral reef conservation since 1990’s. In 1994, an organization called International Coral Reef Initiative (ICRI) was founded by eight countries. Their objective is to strictly implement proper measure in coral reef conservation. They have also been educating the people worldwide about coral reef and how to take care of it.

More other organizations involved in coral reef conservation are; Global Coral Relief Monitoring Network, U.S. Coral Reef Initiative, NGO, Project AWARE, the National Oceanic and Atmospheric Association, the Environmental Projection Agency and many more.

Other than those organizations, you can help too by following some of these tips below in helping Coral Reef Conservation.

  • Report any coral reef damage you see to your local dive operators or conservation groups near you.
  • When sailing, make sure to navigate your boat carefully to avoid contact on coral reef and make sure to maintain your engine to prevent oil or gas spills.
  • Enroll in any education programs about coral reef conservation offered by conservation groups or be in the group itself.
  • Be active and supportive. When you see litter on a coral reef, pick it up immediately and educate people about it. Try also to organize a coral reef cleanup on your community. You’ll see, it’ll be fun and a big help to our beloved coral reefs.
coral reef destruction

Damaged Coral Reef caused by Coral Reef Destruction

Surely, we can all be a part of big community that saves the threatened coral reef. Don’t be the cause of coral reef destruction but be the part of its conservation.

Coral Reef Bleaching – Death of Marine Species Sat, 28 Jan 2012 11:58:48 +0000 Coral reef bleaching – 2012


Coral reef bleaching and it’s effects are killing the coral and the most important areas in underwater ecosystem as this is the home of many fishes in the sea. This is also their source of food most of the time. A coral reef is mostly where new eggs can be found. That’s why a small sign of damage to coral reefs is a sign of death to millions of different species of marine life. The biggest coral reef in the world is the Great Barrier Reef found in Coral Sea, off the coast of Queensland in northeast Australia.

The Great Barrier Reef

Global Warming.

The coral reef is one of nature’s valuable gift to us however it’s likely to be banished in the surface of the ocean. Why? Well, it looks like human doesn’t value that gift as it seems that most reasons why our coral reef got “sick” are the human activities. Experts say that 58 percent of the world’s coral reefs were threatened by human activities. And that includes the latest information on the impacts of Global Warming and Coral reef bleaching which is by the way caused by humans. Note that coral reef takes years to recover. This is really a bad news. The two impacts are the main reason of today’s coral reef extinction and it’s reported that it goes bad to worse as years pass.

The Dilemma

Global warming is obviously caused by people around the globe and the worst effect it could give is the coral reef bleaching. This dilemma happens to coral reef when the surface of the ocean rise its temperature from warm to hot. When that happens, the zooxantheallae or the unicellular algae that gives the coral “life” will die leading to coral reef bleaching or the simple definition would be a “lifeless coral reef”. One example of worst coral reef bleaching in the record happened way back 2005 on the area of Atlantic Ocean and Caribbean Sea. And from the year 2010 up to present year, it is predicted to be even worse.

For that, will the time come that we can only see coral reef on pictures and not in real life?

I hope you enjoyed this small but very important feature.

Reasons Why the Coral Reefs are Dying Sat, 17 Sep 2011 12:40:13 +0000 The Beauty of Coral Reef

The coral reef is probably the most diverse area in the seas since they allow fishes to live and eat. Due to its natural protection to certain predators, small fishes prefer to lay their eggs on the coral’s surface. In general, its diversity is made because of predator-prey interaction and some mutual interaction such as the fishes and corals. They are thus called the “rainforest” of the seas.

Coral ReefBut these homes are slowly dying. Basically, there are two major factors that contribute to the death of coral reefs. Human related activities, such as illegal fishing, excessive exploitation and tourism have a very big impact to their death and the second factor is also made by humans also – global warming.

Global warming is one of the evidence that shows how humans helped make the world hotter and Mother Nature does not like it. It affects every organism that lives in this time, even the ones under the waters.  Coral reefs are affected by this because they are very sensitive to even the slightest change in temperature and pH concentration. Their death is fast and cannot be compensated by their reproduction since even in the normal condition, they reproduce slowly.

Coral Reefs in the Sea

There are many effects to the world if the coral reef will be erased entirely. Their very function itself causes extinction to many marine organisms that depend on them for protection and foraging, and followed by the death of those animals that live by feeding on the organism living in the corals. This process is called successive extinction due to the loss of their limited geographic distribution.

Should we wait for that time to come to change what we are doing wrong? By being aware of this, people should take the first move in conservation since we are in top of the hierarchy of species.

]]> 0
Coral Reef Bleaching – its Effect to the Environment Fri, 16 Sep 2011 02:26:21 +0000 The Coral Reef is most likely the place where all types of fishes stay to find their mate or lay eggs. Because of its very diversity, coral reefs are also called the “rainforest” of the ocean. Although these coral reefs account for only about 1% of the world’s ocean, they are home to 25% of life underwater.

Coral Reef BleachingBut due to a lot of factors including human-related activities and the inevitable warming of the planet, these majestic structures have been slowly dying.

The world’s largest coral reef in Australia, the Great Barrier Reef, has already been affected. Coral reef bleaching occurs when algae are forced to leave the polyps during high temperature in the seas. Some bleached corals recover in the next season but most of them die especially when all the algae that live in them are lost.  The magnitude of the damage is not yet confirmed but it is very visible when the reef is seen on top view.

The destruction of these reefs can result to an end to another ecosystem, termed as the DOMINO EFFECT. When this happens, those marine animals that depend on the coral reefs are most likely be wiped out due to predation. There will be an impact to the economy of the countries which depends largely on fishery. Shores will also be damaged and tourism will decline. The balance of nature will be disrupted and extinction of many species will occur.

Coral Reefs Bleaching to Death Wed, 24 Aug 2011 05:07:15 +0000 What is coral bleaching?


Whip Coral Coliny - coral reefs bleahing

One of the most visually dramatic effects of climate change on corals, has been bleaching. When the ocean warms, the oxygen content reduces, and corals become ‘bleached’.

The heat affects the tiny algae which live symbiotically inside the corals and supply them with food. The heat stress damages the algae and in consequence leads to coral death.

Coral reefs bleaching is mainly result of global warming. Global warming could now mean a death sentence for many coral reefs. If the present rate of destruction continues, most of the world’s coral reefs could be killed within our lifetime.

Coral reefs are extremely important for biodiversity, providing home to over 25% of all the marine life. 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 around the world have been severely damaged by unusually warm ocean temperatures.

However, coral reefs are very fragile sensitive ecosystems that can only tolerate a narrow temperature range.

Coral Reefs threatend by Climate Change Wed, 22 Dec 2010 10:41:27 +0000

JAKARTA, Aug. 20 (UPI) — A dramatic rise in the surface temperature of Indonesian waters has devastated local coral populations, research shows.

coral reefsMarine biologists with the Wildlife Conservation Society, in an initial survey of the waters in May, found that more than 60 percent of the coral had “bleached,” which occurs when algae living within coral tissues are expelled.

By August, surveys by researchers from Australia’s James Cook University and Indonesia’s Syiah Kuala University showed 80 percent of those bleached corals had since died.

“It’s a disappointing development, particularly in light of the fact that these same corals proved resilient to other disruptions to this ecosystem, including the Indian Ocean Tsunami of 2004,” said Stuart Campbell, marine program director for the Wildlife Conservation Society of Indonesia.

Sea surface temperatures in the Andaman Sea — an area that includes the coasts of Myanmar, Thailand, the Andaman and Nicobar Islands, and north western Indonesia — have been on the rise.

According to the National Oceanic and Atmospheric Administration’s Coral Hotspots Web site, air temperatures in the region peaked at 93 degrees Fahrenheit in late May, representing a 7 degree rise over long-term averages for the area.

The coral bleaching is caused by a combination of warmer water and greater exposure to sunlight that is unfiltered by clouds or wind.

coral reefsThe August findings represent “a tragedy not only for some of the world’s most biodiverse coral reefs, but also for people in the region, many of whom are extremely impoverished and depend on these reefs for their food and livelihoods,” Caleb McClennen, marine program director for the society, said in a statement.

“It is another unfortunate reminder that international efforts to curb the causes and effects of climate change must be made if these sensitive ecosystems and the vulnerable human communities around the world that depend on them are to adapt and endure,” he said.

Clive Wilkinson, a coordinator at the Global Coral Reef Monitoring Network in Australia, told the Voice of America the bleaching appears to be spreading to Vietnam and Southeast Asia. He warned that it could reach Taiwan and southern Japan very soon.

“We’re sadly quite convinced that this is a climate change event,” Wilkinson said. “What’s happened is that there is far more energy in the atmosphere and in the oceans at the moment because of global warming.”

While coral reefs account for just 1 percent of the world’s ocean surface, they provide a home for 25 percent of all sea life.

Coral Reef Bleaching Wed, 08 Dec 2010 19:29:14 +0000

Coral reefs are a sight to behold. Great coral reefs in the world, such as the Great Barrier Reef in Australia, Belize Barrier Reef in Mexico, Red Sea Coral Reef in the Middle East and the Tubbataha Reef in the Philippines are testaments to the magnificence of natural underwater treasures.

coral reef bleaching

However, coral reefs are also among the most susceptible to environmental destruction. One challenge for the existence of coral reefs is coral reef bleaching.

Coral bleaching is the whitening or fading of coral colors due to the expulsion of the zooxantheallae, a type of a unicellular algae, from the coral system. The zooxantheallae gives the coral reefs its sparkling, gorgeous colors. The loss of zooxantheallae is a sign that the coral reef is undergoing stress, thus a coral reef bleaching occurs. The bleaching signals that environmental imbalance is going on underwater, and the loss of color is the coral reef’s response to these stressors, or imbalance.

Coral reef bleaching is a result of both pathogenic and anthropogenic (human-induced) factors. Pathogenic infection is caused by the bacteria Vibrio Shiloi which is triggered by a marked increase in temperature. Mostly in the summertime, the bacteria unleash heat-sensitive toxins that attack the zooxanthellae in coral reefs.

coral reef bleachingHuman activities contribute to coral reef bleaching. The two major culprits are global warming that induces high sea surface temperature and the increase in solar irradiance that penetrates bodies of water, producing photosynthetical radiation and ultra-violet (UV) light. The thinning of the Earth’s ozone layer and activities like cutting down of trees and destruction of naturally occurring shades enable too much sunlight to penetrate the depths of oceans and seas. Other causes include too much acidity in the ocean, overfishing that destroys marine food cycle and changes in the salinity of seas and oceans, among others.

]]> 0