geografia: Charles Darwin

Evidence: 100 • authority: 72

The Structure and Distribution of Coral Reefs, Being the first part of the geology of the voyage of the Beagle, under the command of Capt. Fitzroy, R.N. during the years 1832 to 1836, was published in 1842 as Charles Darwin's first monograph, and set out his theory of the formation of coral reefs and atolls. He conceived of the idea during the voyage of the Beagle while still in South America, before he had seen a coral island, and wrote it out as HMS Beagle crossed the Pacific Ocean, completing his draft by November 1835. At the time there was great scientific interest in the way that coral reefs formed, and Captain Robert FitzRoy's orders from the Admiralty included the investigation of a…

Evidence: 80 • authority: 72

Geological Observations on the Volcanic Islands, visited during the Voyage of H.M.S. Beagle is a book written by the English naturalist Charles Darwin. The book was published in 1844 and is based on his travels during the second voyage of HMS Beagle, commanded by captain Robert FitzRoy. It is the second book in a series of geology books written by Darwin that also includes The Structure and Distribution of Coral Reefs (published in 1842) and Geological Observations on South America (published in 1846). The text contains seven chapters, and includes observations made during Darwin's travels to the volcanic island of St. Jago in Cape Verde, the Fernando de Noronha archipelago, Ascension Islan…

Evidence: 80 • authority: 72

Geological Observations on South America is a book written by the English naturalist Charles Darwin. The book was published in 1846 and is based on his travels during the second voyage of HMS Beagle, commanded by captain Robert FitzRoy. HMS Beagle arrived in South America to map out the coastlines and islands of the region for the British Navy. On the journey, Darwin collected fossils and plants and recorded the continent's geological features. It is the third book in a series of geology books written by Darwin, which also includes The Structure and Distribution of Coral Reefs, published in 1842, and Geological Observations on the Volcanic Islands visited during the Voyage of H.M.S. Beagle,…

Evidence: 41 • authority: 80

On the structure and distribution of coral reefs /

Evidence: 41 • authority: 80

The structure and distribution of coral reefs,

Evidence: 41 • authority: 80

The Structure and Distribution of Coral Reefs

Evidence: 41 • authority: 80

The Structure and Distribution of Coral Reefs

Evidence: 41 • authority: 80

The structure and distribution of coral reefs,

Evidence: — • authority: 80

Macroalgae, nutrients and phase shifts on coral reefs: scientific issues and management consequences for the Great Barrier Reef

Evidence: — • authority: 80

First documented hurricane strikes on eastern Pacific coral reefs reveal only slight damage

Evidence: — • authority: 72

The Great Barrier Reef is the world's largest coral reef system, composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres (1,400 mi) over an area of approximately 344,400 square kilometres (133,000 mi2). The reef is located in the Coral Sea, off the coast of Queensland, Australia. It is separated from the coast by a channel 160 kilometres (100 mi) wide in places and over 61 metres (200 ft) deep. The Great Barrier Reef can be seen from outer space and is the world's biggest single structure made by living organisms. This reef structure is composed of and built by billions of tiny organisms, known as coral polyps. It supports a wide diversity of life and wa…

Evidence: — • authority: 72

A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups. Coral belongs to the class Anthozoa in the animal phylum Cnidaria, which includes sea anemones and jellyfish. Unlike sea anemones, corals secrete hard carbonate exoskeletons that support and protect the coral. Most reefs grow best in warm, shallow, clear, sunny, and agitated water. Coral reefs first appeared 485 million years ago, at the dawn of the Early Ordovician, displacing the microbial and sponge reefs of the Cambrian. Sometimes called rainforests of…