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The Great Barrier Reef

Escrito por Peces y Corales

THE GREAT BARRIER REEF

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INFORMATION PROVIDED BY THE ARTICLE
introduccion estado coral exploracion origen

Introduction

Current situation
Artícles about corals
Exploration Origin
aguayvida atraccionturistica hidrologia articulosrelacionados  videos
Waters and life-forms
Tourist interest
Hydrology
Related articles
 Related videos

 

THE GREAT BARRIER REEF WANT TO KNOW MORE? - REMAIN IN ACUAPEDIA
granbarreracoral
Ecology
Oceanography
Salinity
Invertebrates
The ocean
Speciation
Corals
Marine ecology
Saltwater

 

introduccionIntroduction

The Great Barrier Reef is a complex of coral reefs, shoals and islets in the Pacific Ocean off the north-eastern coast of Australia, which is the longest and largest reef complex in the world. The Great Barrier Reef extends approximately northwest-southeast over 2,000 km, at a distance on the high seas ranging from 16 to 160 km, and has an area of about 350,000 square km. It has been characterized, something not entirely exact, as the largest structure ever built by living creatures.

estadoCurrent situation

The reef is made up of about 2,100 individual reefs and about 800 fringe reefs (formed around islands or border shores). Many are dry or barely flooded with low tide. Some have islands of coral sand, or cays; Others border the high islands or the coast of the mainland. Despite this variety, reefs share a common origin: each has formed, over millions of years, skeletons and skeletal debris from a mass of living marine organisms. The "bricks" that build the reef are formed by the calcareous remains of small creatures known as coral and coral polyps, while the "cement" that unites these remains is formed largely by coralline algae and bryozoans. The interstices of the reef have been filled by vast quantities of skeletal waste produced by the coming and going of the waves and the depredations of drilling organisms.

coralARTICLES ABOUT CORALS
BUBBLE CORAL
SEA PEN
BLACK CORAL
STAGHORN CORAL
DENDRONEPHTHYA

exploracionExploration throughout history

The exploration was started by the Europeans in 1770, when the British captain and explorer James Cook sailed with his boat on the reef until he ended up running aground in him. The work of plotting channels and passages through the labyrinth of reefs, initiated by Cook, continued during the nineteenth century. The expedition of the Great Barrier Reef of 1928 – 29 contributed important knowledge about coral physiology and the ecology of coral reefs. Today, a modern laboratory on Heron Island continues scientific research, and several studies have been conducted in other reef-related areas.

origenOrigin

The reef has risen on the shallow continental shelf that borders the Australian continent, in warm waters that have allowed corals to flourish (they cannot exist where average temperatures fall below 21 °c). Recent surveys have established that the reefs were growing on the continental shelf as early as the Miocene period (23.7 to 5.3 million years ago). The sinking of the Continental Shelf has continued, with some investments, since the early Miocene.

 

IT MAY BE OF YOUR INTEREST - AQUARIUM AND FISHTANKS OF DIFFERENT SIZES

aguayvidaCharacteristics of its waters and life-forms

The waters of the Great Barrier Reef are formed by a layer of surface water from the southwestern Pacific Ocean. The waters of the reef show little seasonal variation: the surface water temperature is high, which varies from 21 to 38 ° C. The waters are usually crystalline, with underwater characteristics clearly visible up to depths of 30 meters.

Life forms include at least 300 species of hard coral, as well as anemones, sponges, worms, gastropods, lobsters, crabs, prawns, and a wide variety of fish and poultry. The most destructive reef animal is the sea star of the Crown of Thorns (Acanthaster Planci), which has reduced the colour and attractiveness of many of the main reefs by eating much of the live coral. Red algae encrusted as the Lithothamnion and Porolithon form the border of fortifying purple red algae which is one of the most characteristic traits of the Great Barrier Reef, while the Halimeda green algae flourishes almost everywhere. On the surface, the plant life of the cays is very restricted, consisting of only about 30 to 40 species. Some varieties of mangroves occur in the northern Cays.

atraccionturisticaTourist interest

In addition to its scientific interest, the reef has become more and more important as a tourist attraction. The growing concern for the preservation of its natural heritage has led to greater control of potentially threatening activities such as the drilling of oil resources. The extensive use of tourist boats and the sustainability of commercial fishing were controversial issues at the end of the twentieth century.

The health of the reef, however, is also threatened by other factors. Some marine scientists observed that coral reef coverage fell by about 50 percent between 1985 and 2012 as a result of damage caused by coral bleaching, invasive species such as sea star of the Crown of Thorns (Acanthaster Planci), and tropical cyclones.

Reef supervision is largely responsible for the Great Barrier Reef Marine Park (declared in 1975), which covers the vast majority of the area. There are also smaller state and national parks. In 1981 the Great Barrier Reef was added to the UNESCO World Heritage List.

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IT MAY BE OF YOUR INTEREST - FOOD FOR SEVERAL TYPES OF FISH

 

videosGREAT DOCUMENTARIES ABOUT THE GREAT REEF BARRIER

 

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