What is the big barrier cliff?
The large barrier cliff is the largest system of coral reefs in the world, which extends 2,600 km (1600 miles) on an area of approximately 344,400 square km (133 000 m2). A large barrier cliff, which consists of almost 3,000 individual cliffs, is sometimes called the largest organism in the world, although it is more precisely the largest structure in the world built by organisms. The cliff consists of 900 islands created when the sand collects at the top of the coral just below the surface. The large barrier reef is just off the northeast coast of Australia and can be easily seen from the air. Many of this is protected as part of the Naval Park of the Great Barrier Reefs and was named by the State icon of Queensland, the neighboring Australian state. The new polyps build on the old and create an endless cycle of expansion. Reproduction is large colonies of interconnected coral polyps often genetically identical, which are considered the only organism. Corals occasionally change their genetics by sexual reproduction with anotherEven corals of the same kind, achieved by releasing the sperm into the water. The extension of the colony is kept under the control of predators, food restrictions and strong storms that can interrupt large pieces of reef if they are poorly attached.
The growth of each coral polyp is relatively slow - one polyp can increase the diameter by 1 to 3 cm (0.39 to 1.2 inches) per year, growing a year by 1 to 25 cm (0.4-12 inches). The large barrier reef, along with all other cliffs, grows on the stable areas of the continental shelf interrupted by small submarine hills. They keep the coral elevated and give it a base. There is evidence that part of the skeletal material in the current large memorial reef goes up to 600,000 years, although the current structure of living reefs is considered 6,000 to 8,000 years, making it one of the oldest organisms in the world if considered a whole.
corals require tropical growth growththe heat. For this reason, it is assumed that the growth of corals did not start around 25 million years ago, when Australia moved to tropical waters. Since then, growth has been interrupted by changes in the temperature of the surrounding and sea level. During the last glacial maximum, when the sea levels were 200-400 ft less than today, many parts of the current large barrier cliff would be above the water or very shallow. Unlike some other reef systems, it lacks a large barrier cliff of the atoll, which is demanding to study. Although the structure was known to Australian natives and Torres Strait Islanders for decades, until 1770 that the reef was discovered by James Cook, whose lamb had suffered massive damage as she ran on the cliff.
In some places, the large barrier cluster extends from the surface to a depth of 150 m (490 ft), limited only by a lack of sunlight. Coral polyps are Cnidarians like jellyfish. They use stinging cells called nestatocysts, to capture prey, from plankton to mAle fish and defend themselves against predators such as starfish. These nematocysts consist of a sharp poisonous color that can fire at a target for only 600 nanoseconds and achieve an acceleration of approximately five million g.
Corals such as corals that form a large barrier cliff have a narrow symbiotic relationship with the eyelashes Symbiodinium . These eyelashes live directly on the surface of coral polyps and acquire safety in exchange for food that provide coral through photosynthesis. Many corals gain their clear beautiful color from the eyelashes that inhabit them. Occasionally, because of algae stress, call your symbiotic partner, resulting in a temporary loss of color. When this process occurs on a wide scale, it is called coral bleaching, due to the loss of the color that accompanies it. Mass coral bleaching occurred in the years in 1998, 2002 and 2006 due to rising water temperature from global warming.
Numerous species create their home in a cliff, including thirty DWhale rims, dolphins and pills, six types of sea turtles, 125 types of sharks, skates or chimeras, 215 bird species, 17 types of sea snakes, 1,500 species of fish and more than 400 coral species. Some of these species are endemic for a large barrier cliff that is located anywhere else. The great biodiversity found on the cliff was created by its popular diving places that visited the largest underwater photographers in the world. Divers sometimes wear special protective suits to protect them from dangerous jellyfish in the area.
The large barrier cliff Mábyl is called one of the seven natural miracles in the world. It is his own ecosystem, a biologically active place where thousands of plant and animal species live in coexistence and induce in and out of complex structures created by coral polyps. It is difficult to think of an underwater ecosystem so diverse in its kind or as fantastic as a large barrier cliff. Coral cliffs existed occasionally in subtropical and tropical voDách for hundreds of millions of years.
At present, the large barrier cliff is threatened by a change in climate, water pollution and excessive fishing of Keystone, such as the giant Triton Mollusk. Warmer temperatures interfere with the rare balance between corals and their symbiotic algae, causing mass bleaching events more often than otherwise. The drainage of agricultural fertilizers from Australian farms is caused by eyelash flowers that suck out nutrients and leave little remaining for the living coral reefs and animals that inhabit it. Excessive fishing of Keystone causes coral predators such as the roar of the koruna to reproduce too quickly, and then continue to eat much more living corals than have proved in recent decades. Maintaining a large barrier reef for the country and future generations will require careful environmental management and protection.