Galápagos Islands

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Galápagos Islands
Galapagos Islands topographic map-en.svg
Geography
Location Pacific Ocean
Coordinates 0°40′S 90°33′W / 0.667°S 90.550°W / -0.667; -90.550Coordinates: 0°40′S 90°33′W / 0.667°S 90.550°W / -0.667; -90.550
Major islands 18
Area 8,010 km2 (3,090 sq mi)
Highest elevation 1,707 m (5,600 ft)
Highest point Volcán Wolf
Country
Ecuador
Province Galápagos
Capital city Puerto Baquerizo Moreno
Demographics
Population 26,640 (as of 2012)
Additional information
Official name: Galápagos Islands
Type: Natural
Criteria: vii, viii, ix, x
Designated: 1978 (2nd session)
Reference No. 1
Region: Latin America and the Caribbean
Extension: 2001 and 2003
Endangered: 2007–2010

The Galápagos Islands (official name: Archipiélago de Colón, other Spanish names: Islas Galápagos, Spanish pronunciation: [ˈislas gaˈlapaɣos]) are an archipelago of volcanic islands distributed on either side of the Equator in the Pacific Ocean, 926 km (575 mi) west of continental Ecuador, of which they are a part.

The Galápagos Islands and their surrounding waters form an Ecuadorian province, a national park, and a biological marine reserve. The principal language on the islands is Spanish. The islands have a population of slightly over 25,000.[1]

The islands are famed for their vast number of endemic species and were studied by Charles Darwin during the voyage of the Beagle. His observations and collections contributed to the inception of Darwin's theory of evolution by natural selection.

The first recorded visit to the islands happened by chance in 1535, when the Bishop of Panamá Fray Tomás de Berlanga went to Peru to arbitrate in a dispute between Francisco Pizarro and Diego de Almagro. De Berlanga was blown off course, though he eventually returned to the Spanish Empire and described the conditions of the islands and the animals that inhabited them. The group of islands was shown and named in Abraham Ortelius's atlas published in 1570. The first crude map of the islands was made in 1684 by the buccaneer Ambrose Cowley, who named the individual islands after some of his fellow pirates or after British royalty and noblemen. These names were used in the authoritative navigation charts of the islands prepared during the Beagle survey under captain Robert Fitzroy, and in Darwin's popular book The Voyage of the Beagle. The then new Republic of Ecuador took the islands from Spanish ownership in 1832, and subsequently gave the islands official Spanish names.[2] The older names remained in use in English language publications, including Herman Melville's The Encantadas of 1854.

Physical geography[edit]

The islands are located in the eastern Pacific Ocean, 973 km (525 nmi; 605 mi) off the west coast of South America. The closest land mass is that of mainland Ecuador, the country to which they belong, 926 km/500 nmi to the east.

Orthographic projection centred over the Galápagos.
School of scalloped hammerheads, Wolf Island, Galapagos Islands
Another school of scalloped hammerheads at Wolf Island, Galapagos
Grapsus grapsus on the rocks.
Satellite photo of the Galápagos islands overlaid with the names of the visible main islands.
Isabela seen from Spot Satellite.
Waved Albatrosses on Española.
Galápagos marine iguana.
Main Street on San Cristóbal Island.
An animated tour of the Galápagos.
NASA oceanographer Gene Carl Feldman reflects on his unique perspective on this region.

The islands are found at the coordinates 1°40'N–1°36'S, 89°16'–92°01'W. Straddling the equator, islands in the chain are located in both the northern and southern hemispheres, with Volcán Wolf and Volcán Ecuador on Isla Isabela being directly on the equator. Española Island, the southernmost islet of the archipelago, and Darwin Island, the northernmost one, are spread out over a distance of 220 km (137 mi). The International Hydrographic Organization (IHO) considers them wholly within the South Pacific Ocean, however.[3] The Galápagos Archipelago consists of 7,880 km2 (3,040 sq mi) of land spread over 45,000 km2 (17,000 sq mi) of ocean. The largest of the islands, Isabela, measures 2,250 sq mi/5,827 km2[4] and makes up close to three-quarters of the total land area of the Galápagos. Volcán Wolf on Isabela is the highest point, with an elevation of 1,707 m (5,600 ft) above sea level.

The group consists of 18 main islands, 3 smaller islands, and 107 rocks and islets. The islands are located at the Galapagos Triple Junction. The archipelago is located on the Nazca Plate (a tectonic plate), which is moving east/southeast, diving under the South American Plate at a rate of about 2.5 inches (6.4 cm) per year.[5] It is also atop the Galapagos hotspot, a place where the Earth's crust is being melted from below by a mantle plume, creating volcanoes. The first islands formed here at least 8 million and possibly up to 90 million years ago.[6]

While the older islands have disappeared below the sea as they moved away from the mantle plume, the youngest islands, Isabela and Fernandina, are still being formed, with the most recent volcanic eruption in April 2009 where lava from the volcanic island Fernandina started flowing both towards the island's shoreline and into the centre caldera.

Main islands[edit]

The 18[7] main islands (with a land area larger than 1 km2) of the archipelago (with their English names) shown alphabetically:

  • Baltra (South Seymour) Island – Also known as South Seymour, Baltra is a small flat island located near the centre of the Galápagos. It was created by geological uplift. The island is very arid, and vegetation consists of salt bushes, prickly pear cacti and palo santo trees.
    Until 1986, Baltra (Seymour) Airport was the only airport serving the Galápagos. Now, there are two airports which receive flights from the continent; the other is located on San Cristóbal Island. Private planes flying to Galápagos must fly to Baltra, as it is the only airport with facilities for planes overnight. On arriving in Baltra, all visitors are immediately transported by bus to one of two docks. The first dock is located in a small bay, where the boats cruising Galápagos await passengers. The second is a ferry dock, which connects Baltra to the island of Santa Cruz.
    During the 1940s, scientists decided to move 70 of Baltra's land iguanas to the neighboring North Seymour Island as part of an experiment. This move proved unexpectedly useful when the native iguanas became extinct on Baltra as a result of the island's military occupation in World War II. During the 1980s, iguanas from North Seymour were brought to the Charles Darwin Research Station as part of a breeding and repopulation project, and in the 1990s, land iguanas were reintroduced to Baltra. As of 1997, scientists counted 97 iguanas living on Baltra; 13 of which had hatched on the islands.
  • Bartolomé (Bartholomew) Island – Bartolomé Island is a volcanic islet just off the east coast of Santiago Island in the Galápagos Islands group. it is one of the "younger" islands in the Galápagos archipelago. This island, and neighbouring Sulivan Bay on Santiago (James) island, are named after lifelong friend of Charles Darwin, Sir Bartholomew James Sulivan, who was a Lieutenant aboard HMS Beagle.[8] Today Sulivan Bay is often misspelled Sullivan Bay. This island is one of the few that is home to the Galapagos penguin which is the only wild penguin species to live on the equator. The green turtle is another animal that resides on the island.
  • Darwin (Culpepper) Island – This island is named after Charles Darwin. It has an area of 1.1 km2 (0.4 sq mi) and a maximum altitude of 168 m (551 ft). Here fur seals, frigates, marine iguanas, swallow-tailed gulls, sea lions, whales, marine turtles, and red-footed and Nazca boobies can be seen.
  • Española (Hood) Island – Its name was given in honor of Spain. It also is known as Hood, after Viscount Samuel Hood. It has an area of 60 km2 (23 sq mi) and a maximum altitude of 206 m (676 ft).
    Española is the oldest island at around 3.5 million years, and the southernmost in the group. Due to its remote location, Española has a large number of endemic species. It has its own species of lava lizard, mockingbird, and tortoise. Española's marine iguanas exhibit a distinctive red coloration change between the breeding season. Española is the only place where the Waved Albatross nests. Some of the birds have attempted to breed on Genovesa (Tower) Island, but unsuccessfully. Española's steep cliffs serve as the perfect runways for these birds, which take off for their ocean feeding grounds near the mainland of Ecuador and Peru.
    Española has two visitor sites. Gardner Bay is a swimming and snorkelling site, and offers a great beach. Punta Suarez has migrant, resident, and endemic wildlife, including brightly colored marine iguanas, Española lava lizards, Hood Mockingbirds, Swallow-tailed Gulls, blue-footed boobies, Nazca boobies, Red-billed Tropicbirds, Galápagos hawks, 3 species of Darwin's finches, and the waved albatross.
  • Fernandina (Narborough) Island – The name was given in honor of King Ferdinand II of Aragon, who sponsored the voyage of Columbus. Fernandina has an area of 642 km2 (248 sq mi) and a maximum altitude of 1,494 m (4,902 ft). This is the youngest and westernmost island. On 13 May 2005, a new, very eruptive process began on this island, when an ash and water vapor cloud rose to a height of 7 km (23,000 ft) and lava flows descended the slopes of the volcano on the way to the sea. Punta Espinosa is a narrow stretch of land where hundreds of marine iguanas gather, largely on black lava rocks. The famous Flightless Cormorants inhabit this island, as do Galápagos Penguins, pelicans, Galápagos sea lions and Galápagos fur seals. Different types of lava flows can be compared, and the mangrove forests can be observed.
  • Floreana (Charles or Santa María) Island – It was named after Juan José Flores, the first President of Ecuador, during whose administration the government of Ecuador took possession of the archipelago. It is also called Santa Maria, after one of the caravels of Columbus. It has an area of 173 km2 (67 sq mi) and a maximum elevation of 640 m (2,100 ft). It is one of the islands with the most interesting human history, and one of the earliest to be inhabited. Flamingos and green sea turtles nest (December to May) on this island. The patapegada or Galápagos petrel, a sea bird which spends most of its life away from land, is found here. At Post Office Bay, since the 19th century whalers kept a wooden barrel that served as post office so that mail could be picked up and delivered to their destinations, mainly Europe and the United States, by ships on their way home. At the "Devil's Crown", an underwater volcanic cone and coral formations are found.
  • Genovesa (Tower) Island – The name is derived from Genoa, Italy. It has an area of 14 km2 (5.4 sq mi) and a maximum altitude of 76 m (249 ft). This island is formed by the remaining edge of a large caldera that is submerged. Its nickname of "the bird island" is clearly justified. At Darwin Bay, frigatebirds and Swallow-tailed Gulls, the only nocturnal species of gull in the world, can be seen. Red-footed boobies, noddy terns, lava gulls, tropic birds, doves, storm petrels and Darwin finches are also in sight. Prince Philip's Steps is a bird-watching plateau with Nazca and red-footed boobies. There is a large Palo Santo forest.
  • Isabela (Albemarle) Island (Ecuador) – This island was named in honor of Queen Isabela. With an area of 4,640 km2 (1,792 sq mi), it is the largest island of the Galápagos. Its highest point is Volcán Wolf, with an altitude of 1,707 m (5,600 ft). The island's seahorse shape is the product of the merging of six large volcanoes into a single land mass. On this island, Galápagos penguins, flightless cormorants, marine iguanas, pelicans and Sally Lightfoot crabs abound. At the skirts and calderas of the volcanoes of Isabela, land iguanas and Galápagos tortoises can be observed, as well as Darwin finches, Galápagos hawks, Galápagos doves and very interesting lowland vegetation. The third-largest human settlement of the archipelago, Puerto Villamil, is located at the southeastern tip of the island. It is the only island to have the equator run across it. It is also the only place in the world where a penguin can be in its natural habitat in the Northern Hemisphere.
North Seymour Island in the Galapagos about to land on shore, Daphne Island is in the distance.
  • Marchena (Bindloe) Island: Named after Fray Antonio Marchena, it has an area of 130 km2 (50 sq mi) and a maximum altitude of 343 m (1,125 ft). Galápagos hawks and sea lions inhabit this island, and it is home to the Marchena lava lizard, an endemic animal.
  • North Seymour Island – Its name was given after an English nobleman, Lord Hugh Seymour. It has an area of 1.9 km2 (0.7 sq mi) and a maximum altitude of 28 m (92 ft). This island is home to a large population of blue-footed boobies and swallow-tailed gulls. It hosts one of the largest populations of frigate birds. It was formed from geological uplift.
  • Pinzón (Duncan) Island – Named after the Pinzón brothers, captains of the Pinta and Niña caravels, it has an area of 18 km2 (7 sq mi) and a maximum altitude of 458 m (1,503 ft).
  • Pinta (Abingdon) Island – Named after the Pinta caravel, it has an area of 60 km2 (23 sq mi) and a maximum altitude of 777 m (2,549 ft). Sea lions, Galápagos hawks, giant tortoises, marine iguanas, and dolphins can be seen here. Pinta Island was home to the last remaining Pinta tortoise, called Lonesome George. He was moved from Pinta Island to the Charles Darwin Research Station on Santa Cruz Island, where scientists were attempting to breed from him. However, Lonesome George died in June 2012 without producing any offspring.
  • Rábida (Jervis) Island – It bears the name of the convent of Rábida, where Columbus left his son during his voyage to the Americas. It has an area of 4.9 km2 (1.9 sq mi) and a maximum altitude of 367 m (1,204 ft). The high amount of iron contained in the lava at Rábida gives it a distinctive red colour. White-cheeked pintail ducks live in a saltwater lagoon close to the beach, where brown pelicans and boobies have built their nests. Until recently, flamingos were also found in the lagoon, but they have since moved on to other islands, likely due to a lack of food on Rábida. Nine species of finches have been reported in this island.
  • San Cristóbal (Chatham) Island – It bears the name of the patron saint of seafarers, "St. Christopher". Its English name was given after William Pitt, 1st Earl of Chatham. It has an area of 558 km2 (215 sq mi) and its highest point rises to 730 m (2395 ft). This is the first island in the Galapagos Archipelago Charles Darwin visited during his voyage on the Beagle. This islands hosts frigate birds, sea lions, giant tortoises, blue- and red-footed boobies, tropicbirds, marine iguanas, dolphins and swallow-tailed gulls. Its vegetation includes Calandrinia galapagos, Lecocarpus darwinii, and trees such as Lignum vitae. The largest freshwater lake in the archipelago, Laguna El Junco, is located in the highlands of San Cristóbal. The capital of the province of Galápagos, Puerto Baquerizo Moreno, lies at the southern tip of the island.
From an aircraft flying out of Baltra Island (on the right) and the Santa Cruz(on the left), the Itabaca Channel is the waterway in the middle where water taxis take people in between and to waiting boats off shore waiting for multi day cruises.
  • Santa Cruz (Indefatigable) Island (Galápagos) – Given the name of the Holy Cross in Spanish, its English name derives from the British vessel HMS Indefatigable. It has an area of 986 km2 (381 sq mi) and a maximum altitude of 864 m (2834 ft). Santa Cruz hosts the largest human population in the archipelago, the town of Puerto Ayora. The Charles Darwin Research Station and the headquarters of the Galápagos National Park Service are located here. The GNPS and CDRS operate a tortoise breeding centre here, where young tortoises are hatched, reared, and prepared to be reintroduced to their natural habitat. The Highlands of Santa Cruz offer exuberant flora, and are famous for the lava tunnels. Large tortoise populations are found here. Black Turtle Cove is a site surrounded by mangroves, which sea turtles, rays and small sharks sometimes use as a mating area. Cerro Dragón, known for its flamingo lagoon, is also located here, and along the trail one may see land iguanas foraging.
  • Santa Fe (Barrington) Island – Named after a city in Spain, it has an area of 24 km2 (9 sq mi) and a maximum altitude of 259 m (850 ft). Santa Fe hosts a forest of Opuntia cactus, which are the largest of the archipelago, and Palo Santo. Weathered cliffs provide a haven for swallow-tailed gulls, red-billed tropic birds and shear-waters petrels. Santa Fe species of land iguanas are often seen, as well as lava lizards.
  • Santiago (San Salvador, James) Island (Galápagos) – Its name is equivalent to Saint James in English; it is also known as San Salvador, after the first island discovered by Columbus in the Caribbean Sea. This island has an area of 585 km2 (226 sq mi) and a maximum altitude of 907 m (2976 ft). Marine iguanas, sea lions, fur seals, land and sea turtles, flamingos, dolphins and sharks are found here. Pigs and goats, which were introduced by humans to the islands and have caused great harm to the endemic species, have been eradicated (pigs by 2002; goats by the end of 2006). Darwin finches and Galápagos hawks are usually seen, as well as a colony of fur seals. At Sulivan Bay, a recent (around 100 years ago) pahoehoe lava flow can be observed.
  • Wolf (Wenman) Island – This island was named after the German geologist Theodor Wolf. It has an area of 1.3 km2 (0.5 sq mi) and a maximum altitude of 253 m (830 ft). Here, fur seals, frigatebirds, Nazca and red-footed boobies, marine iguanas, sharks, whales, dolphins and swallow-tailed gulls can be seen. The most famous resident is the vampire finch, which feeds partly on blood pecked from other birds, and is only found on this island.

Minor islands[edit]

  • Daphne Major – A small island directly north of Santa Cruz and directly west of Baltra, this very inaccessible island appears, though unnamed, on Ambrose Cowley's 1684 chart. It is important as the location of multidecade finch population studies by Peter and Rosemary Grant.
  • South Plaza Island (Plaza Sur) – It is named in honor of a former president of Ecuador, General Leonidas Plaza. It has an area of 0.13 km2 (0.05 sq mi) and a maximum altitude of 23 m (75 ft). The flora of South Plaza includes Opuntia cactus and Sesuvium plants, which form a reddish carpet on top of the lava formations. Iguanas (land, marine and some hybrids of both species) are abundant, and large numbers of birds can be observed from the cliffs at the southern part of the island, including tropic birds and swallow-tailed gulls.
  • Nameless Island – A small islet used mostly for scuba diving.
  • Roca Redonda (Galápagos) – An islet approximately 25 km (16 mi) northwest of Isabela. Herman Melville devotes the third and fourth sketches of The Encantadas to describing this islet (which he calls "Rock Rodondo") and the view from it.

Weather[edit]

These satellite maps show chlorophyll concentration (which corresponds with the abundance of phytoplankton) during El Niño (top) and La Niña (lower). Blue represents low concentrations, yellow, orange and red indicate high concentrations. Currents that normally fertilize the phytoplankton reverse during El Niño, resulting in barren oceans. These same currents are strengthened by La Niña, resulting in an explosion of ocean life.
The bottom image shows sea surface temperature, cool upwelling waters are coloured purple. Thriving phytoplankton populations are indicated by high chlorophyll concentrations (top image), coloured green and yellow. Images acquired on 2 March 2009.

Although located on the Equator, the Humboldt Current brings cold water to the islands, causing frequent drizzles during most of the year. The weather is periodically influenced by the El Niño events, which occur about every 3–7 years and are characterized by warm sea surface temperatures, a rise in sea level, greater wave action, and a depletion of nutrients in the water.[9]

During the season known as the garua (June to November), the temperature by the sea is 22 °C (72 °F), a steady and cold wind blows from south and southeast, frequent drizzles (garuas) last most of the day, and dense fog conceals the islands. During the warm season (December to May), the average sea and air temperature rises to 25 °C (77 °F), there is no wind at all, there are sporadic, though strong, rains and the sun shines.

Weather changes as altitude increases in the large islands. Temperature decreases gradually with altitude, while precipitation increases due to the condensation of moisture in clouds on the slopes. There is a large range in precipitation from one place to another, not only with altitude, but also depending on the location of the islands, and also with the seasons.

The following table corresponding to the wet 1969 shows the variation of precipitation in different places of Santa Cruz Island:

Location Charles Darwin
Station
Devine Farm Media Luna
Altitude 6 m 320 m 620 m
January 23.0 mm 78.0 mm 172.6 mm
February 16.8 mm 155.2 mm 117.0 mm
March 249.0 mm 920.8 mm 666.7 mm
April 68.5 mm 79.5 mm 166.4 mm
May 31.4 mm 214.6 mm 309.8 mm
June 16.8 mm 147.3 mm 271.8 mm
July 12.0 mm 42.2 mm 135.6 mm
August 3.8 mm 13.7 mm 89.5 mm
September 18.5 mm 90.9 mm 282.6 mm
October 3.2 mm 22.6 mm 96.5 mm
November 11.0 mm 52.8 mm 172.7 mm
December 15.7 mm 84.1 mm 175.3 mm
TOTALS 469.7 mm 1901.7 mm 2656.4 mm

The precipitation also depends on the geographical location. During March 1969, the precipitation over Charles Darwin Station, on the southern coast of Santa Cruz was 249.0 mm (9.80 in), while on Baltra Island, the precipitation during the same month was only 137.6 mm (5.42 in). This is because Baltra is located behind Santa Cruz with respect to the prevailing southerly winds, so most of the moisture gets precipitated in the Santa Cruz highlands.

There are significant changes in precipitation from one year to another, too. At Charles Darwin Station, the precipitation during March 1969 was 249.0 mm (9.80 in), but during March 1970, it was only 1.2 mm (0.05 in).

History[edit]

European discovery of the Galápagos Islands occurred when Spaniard Fray Tomás de Berlanga, the fourth Bishop of Panama, sailed to Peru to settle a dispute between Francisco Pizarro and his lieutenants. De Berlanga's vessel drifted off course when the winds diminished, and his party reached the islands on 10 March 1535. According to a 1952 study by Thor Heyerdahl and Arne Skjølsvold, remains of potsherds and other artifacts from several sites on the islands suggest visitation by South American peoples prior to the arrival of the Spanish.[10] However, no remains of graves, ceremonial vessels and constructions have ever been found, suggesting no permanent settlement occurred at the time.[11]

The Galápagos tortoise or Galápagos giant tortoise (Chelonoidis nigra) is the largest living species of tortoise, this is from the Island of Santa Cruz.

The Galápagos Islands first appeared on the maps, of Gerardus Mercator and Abraham Ortelius, in about 1570.[12] The islands were named "Insulae de los Galopegos" (Islands of the Tortoises) in reference to the giant tortoises found there.[13]

The first English captain to visit the Galápagos Islands was Richard Hawkins, in 1593. Until the early 19th century, the archipelago was often used as a hideout by mostly English pirates who pilfered Spanish galleons carrying gold and silver from South America to Spain.

As described in 1684.

In 1793, James Colnett described the flora and fauna of Galápagos, and suggested the islands could be used as base for the whalers operating in the Pacific Ocean. He drew the first accurate navigation charts of the islands. Whalers and maritime fur traders killed and captured thousands of the Galápagos tortoises to extract their fat. The tortoises could be kept on board ship as a means of providing of fresh protein, as these animals could survive for several months on board without any food or water. The hunting of the tortoises was responsible for greatly diminishing, and in some cases eliminating, certain species. Along with whalers came the fur-seal hunters, who brought the population of this animal close to extinction.

The first known permanent human resident on Galapagos was Patrick Watkins, an Irish sailor who was marooned on the Island Floreana from 1807–1809. According to later accounts,[14][15] Watkins managed to survive by hunting, growing vegetables and trading with visiting whalers, before finally stealing an open boat and navigating to Guayaquil.

In 1818 the Nantucket whaleship Globe, under Captain George Washington Gardner, discovered a "mother lode" of sperm whales some thousand miles west of the South American coast approximately at the equator. He returned to Nantucket in 1820 with more than 2000 barrels of sperm whale oil and the news of his discovery. This led to an influx of whaleships to exploit the new whaling ground and the Galapagos Islands became a frequent stop for the whalers both before and after visiting what came to be known as the Offshore Grounds. This led to the establishment in the Galapagos Islands of a kind of unofficial "post office" where whaleships stopped to pick up and drop off letters as well as for purposes of provisioning and repairs.[16]

In October 1820, the whaleship Essex, out of Nantucket, stopped at the Galapagos for these purposes on its way to the Offshore Grounds. On what was then known as Charles Island, while most of the crew were hunting tortoises one crewmember, English boatsteerer Thomas Chappel, for reasons still unclear, lit a fire which quickly burned out of control. Some of the tortoise hunters had a narrow escape and had to run a gauntlet of fire to get back to the ship. Soon almost the entire island was in flames. Crewmembers reported that after a day of sailing away they could still see the flames against the horizon. One crewmember who returned to the Galapagos several years afterward described the entire island as still a blackened wasteland.[17]

Ecuador annexed the Galápagos Islands on 12 February 1832, naming them the Archipelago of Ecuador. This new name added to several names that had been, and are still, used to refer to the archipelago. The first governor of Galápagos, General José de Villamil, brought a group of convicts to populate the island of Floreana, and in October 1832, some artisans and farmers joined them.

The voyage of the Beagle brought the survey ship HMS Beagle, under captain Robert FitzRoy, to the Galápagos on 15 September 1835 to survey approaches to harbours. The captain and others on board, including his companion, the young naturalist Charles Darwin, made observations on the geology and biology on Chatham, Charles, Albemarle and James islands before they left on 20 October to continue on their round-the-world expedition. Primarily a geologist at the time, Darwin was impressed by the quantity of volcanic craters they saw, later referring to the archipelago as "that land of craters." His study of several volcanic formations over the 5 weeks he stayed in the islands, led to several important geological discoveries, including the first, correct explanation for how volcanic tuff is formed.[18] Darwin noticed the mockingbirds differed between islands, though he thought the birds now known as Darwin's finches were unrelated to each other, and did not bother labelling them by island.[19] Nicholas Lawson, acting Governor of Galápagos for the Republic of the Equator, met them on Charles Island, and as they walked to the prison colony, told Darwin the tortoises differed from island to island. Towards the end of the voyage, Darwin speculated that the distribution of the mockingbirds and the tortoises might "undermine the stability of Species".[20] When specimens of birds were analysed on his return to England, it was found that many apparently different kinds of birds were species of finches, which were unique to islands. These facts were crucial in Darwin's development of his theory of natural selection explaining evolution, which was presented in The Origin of Species.[19]

José Valdizán and Manuel Julián Cobos tried a new colonization, beginning the exploitation of a type of lichen found in the islands (Roccella portentosa) used as a coloring agent. After the assassination of Valdizán by some of his workers, Cobos brought from the continent a group of more than a hundred workers to San Cristóbal Island, and tried his luck at planting sugar cane. He ruled his plantation with an iron hand, which led to his assassination in 1904. In 1897, Antonio Gil began another plantation on Isabela Island.

Over the course of a whole year, from September 1904, an expedition of the Academy of Sciences of California, led by Rollo Beck, stayed in the Galápagos collecting scientific material on geology, entomology, ornithology, botany, zoology and herpetology. Another expedition from that Academy was done in 1932 (Templeton Crocker Expedition) to collect insects, fish, shells, fossils, birds and plants.

For a long time during the early 1900s and at least through 1929, a cash strapped Ecuador had reached out for potential buyers of the islands to alleviate financial troubles at home. The US had repeatedly expressed its interest in buying the islands for military use as they were positioned strategically guarding the Panama Canal.[21]

In 1920s and 1930s, a small wave of European settlers arrived in the islands. Ecuadorian laws provided all colonists with the possibility of receiving twenty hectares each of free land, the right to maintain their citizenship, freedom from taxation for the first ten years in Galapagos, and the right to hunt and fish freely on all uninhabited islands where they might settle.[22] The first European colonists to arrive were Norwegians who settled briefly on Floreana, before moving on to San Cristobal and Santa Cruz. A few years later, other colonists from Europe, America and Ecuador started arriving on the islands, seeking a simpler life.[23] Descendants of the Norwegian Kastdalen family and the German Angermeyer still live on the islands.

During World War II, Ecuador authorized the United States to establish a naval base in Baltra Island, and radar stations in other strategic locations. Baltra was established as a United States Army Air Force base. Crews stationed at Baltra patrolled the Pacific for enemy submarines, as well as provided protection for the Panama Canal. After the war, the facilities were given to the government of Ecuador. Today, the island continues as an official Ecuadorian military base. The foundations and other remains of the US base can still be seen as one crosses the island. In 1946, a penal colony was established in Isabela Island, but it was suspended in 1959.

The marine iguana (Amblyrhynchus cristatus) Galápagos Islands Santa Cruz – swimming in Puerto Ayora

The Galápagos became a national park in 1959,[24] and tourism started in the 1960s, imposing several restrictions upon the human population already living on the island. However, opportunities in the tourism, fishing, and farming industries attracted a mass of poor fishermen and farmers from mainland Ecuador. In the 1990s and 2000s, violent confrontations between parts of the local population and the Galapagos National Park Service occurred, including capturing and killing giant tortoises and holding staff of the Galapagos National Park Service hostage to obtain higher annual sea cucumber quotas.[25]

Politics[edit]

Flag of the Galápagos Province.
Water taxi on Puerto Ayora, Galapagos.
Main article: Galápagos Province

The islands are administered by a provincial government. It was made a province by presidential decree by President Guillermo Rodríguez Lara on 18 February 1973. The province is divided into cantons, each covering certain islands. The capital is Puerto Baquerizo Moreno.

Demographics[edit]

The Galápagos Islands is one of the few places in the world without an indigenous population. The largest ethnic group is composed of Ecuadorian Mestizos, the mixed descendants of Spanish colonists and indigenous Native Americans, who arrived mainly in the last century from the continental part of Ecuador. There is also a large number of whites, mostly of Spanish descent. Some descendants of the early European and American colonists on the islands also still remain on the islands.

In 1959, approximately 1,000 to 2,000 people called the islands their home. In 1972 a census in the archipelago recorded a population of 3,488. By the 1980s, this number had risen to more than 15,000 people, and 2006 estimates place the population around 25,000 people. In 2010 there were 25,124 people in the Galapagos.

Five of the islands are inhabited: Baltra, Floreana, Isabela, San Cristobal and Santa Cruz.

Travel[edit]

Options for flying into the Galapagos are limited to two islands; San Cristobal and Baltra. Private aircraft must use Baltra as it is the airport equipped with overnight plane accommodations. Seymour Airport on Baltra was recently renovated (2012–2013) to accommodate larger planes.

Until 1969 the only way to visit was on a private or chartered vessel. There was no regular air service until Forrest Nelson's Hotel Galapagos began the first organized tours in April 1969. Soon other travel companies brought in tour ships and yachts, and local fishermen began converting their wooden boats for rudimentary cruising with guests. These vessels were the main source of overnight accommodations in the Galapagos. Today there are about 85 yachts and ships equipped for overnight guests, but are limited by the government to 16 up to 100 passengers. In 2006 the Baltra military governed island, was opened up to limited overnight camping. Baltra also requires permits by the military government for overnight stays on the beach. Other inhabited islands also allow camping on the beaches designated as "recreational" use to the locals. All of these camping permits are limited to number of people and nights, with most nights not to exceed 3.

Land based hotels are opening on the inhabited islands of San Cristobal, Santa Cruz, Floreana and Isabela. By 2012, more than half the visitors to Galapagos made their tours using day boats and these small hotels. Restaurants, easy access and economy make this an attractive travel option. The cruise tours are still the best way to see all the complex environment and wildlife of the islands.

There are only 116 visitor sites in the Galapagos: 54 land sites and 62 scuba-diving or snorkeling sites. Small groups are allowed to visit in 2–4 hour shifts only, to limit impact on the area. All groups are accompanied by licensed guides.

Conservation[edit]

Galápagos land iguana basking on a rock
Tortuga Bay on Santa Cruz Island, Galápagos
Two ducks on the Island of Santa Cruz
Clouds, Tortuga Bay.
Grapsus grapsus in the Galapagos.
Spheniscus mendiculus – a juvenile Galapagos Penguin before it has banding markings.

Though the first protective legislation for the Galápagos was enacted in 1930 and supplemented in 1936, it was not until the late 1950s that positive action was taken to control what was happening to the native flora and fauna. In 1955, the International Union for the Conservation of Nature organized a fact-finding mission to the Galápagos. Two years later, in 1957, UNESCO, in cooperation with the government of Ecuador, sent another expedition to study the conservation situation and choose a site for a research station.

In 1959, the centenary year of Charles Darwin's publication of The Origin of Species, the Ecuadorian government declared 97.5% of the archipelago's land area a national park, excepting areas already colonised. The Charles Darwin Foundation (CDF) was founded the same year. The core responsibility of CDF, an international nongovernmental organization (NGO) constituted in Belgium, is to conduct research and provide the research findings to the government for effective management of Galápagos. CDF's research efforts began with the establishment of the Charles Darwin Research Station on Santa Cruz Island in 1964. During the early years, conservation programs, such as eradication of introduced species and protection of native species, were carried out by research station personnel. Now much of that work is accomplished by the Galapagos National Park Service using the research findings and methodologies developed by CDF.

In 1986, the 70,000 square kilometers (27,000 sq mi.) of ocean surrounding the islands was declared a marine reserve, second in size only to Australia's Great Barrier Reef. In 1990, the archipelago became a whale sanctuary. UNESCO recognised the islands in 1978 as a World Heritage Site[26] and in 1985, as a biosphere reserve. This was later extended in December 2001 to include the marine reserve. In July 2010, the World Heritage Committee agreed to remove the Galapagos Islands from its list of precious sites endangered by environmental threats or overuse.[27]

Noteworthy species include:

Environmental threats[edit]

Introduced plants and animals, such as feral goats, cats, and cattle, brought accidentally or willingly to the islands by humans, represent the main threat to Galápagos. Quick to reproduce and with no natural predators, these alien species decimated the habitats of native species. The native animals, lacking natural predators on the islands, are defenseless to introduced predators.

Some of the most harmful introduced plants are the guayaba or guava (Psidium guajava), avocado (Persea americana), cascarilla (Cinchona pubescens), balsa (Ochroma pyramidale), hill raspberry (Rubus niveus), various citrus (orange, grapefruit, lemon), floripondio, higuerilla (Ricinus communis) trees and the elephant grass, Pennisetum purpureum. These plants have invaded large areas and eliminated endemic species in the humid zones of San Cristobal, Floreana, Isabela and Santa Cruz. Also, these harmful plants are just a few of introduced species on the Galápagos Islands. There are over 700 introduced plant species today. There are only 500 native and endemic species. This difference is creating a major problem for the islands and the natural species that inhabit them.

Many species were introduced to the Galápagos by pirates. Thor Heyerdahl quoted documents that mention the Viceroy of Peru, knowing that British pirates ate the goats that they themselves had released in the islands, ordered dogs to be freed there to eliminate the goats[28] Also, when colonization of Floreana by José de Villamil failed, he ordered the goats, donkeys, cattle and other animals from the farms in Floreana be transferred to other islands for the purpose of later colonization.

Non-native goats, pigs, dogs, rats, cats, mice, sheep, horses, donkeys, cows, poultry, ants, cockroaches, and some parasites inhabit the islands today. Dogs and cats attack the tame birds and destroy the nests of birds, land tortoises, and marine turtles. They sometimes kill small Galápagos tortoises and iguanas.[29] Pigs are even more harmful, covering larger areas and destroying the nests of tortoises, turtles and iguanas, as well as eating the animals' native food. Pigs also knock down vegetation in their search for roots and insects. This problem abounds in Cerro Azul volcano and Isabela, and in Santiago, pigs may be the cause of the disappearance of the land iguanas that were so abundant when Darwin visited. The black rat (Rattus rattus) attacks small Galápagos tortoises when they leave the nest, so in Pinzón they stopped the reproduction for a period of more than 50 years; only adults were found on that island. Also, where the black rat is found, the endemic rat has disappeared. Cattle and donkeys eat all the available vegetation and compete with native species for the scarce water. In 1959, fishermen introduced one male and two female goats to Pinta island; by 1973, the National Park service estimated the population of goats to be over 30,000 individuals. Goats were also introduced to Marchena in 1967 and to Rabida in 1971. A recent goat eradication program, however, has cleared most of the goat population from Isabela.

The fast-growing poultry industry on the inhabited islands has been cause for concern from local conservationists, who fear domestic birds could introduce disease into the endemic wild bird populations.

The Galápagos marine sanctuary is under threat from a host of illegal fishing activities, in addition to other problems of development.[30] The most pressing threat to the Marine Reserve comes from local, mainland and foreign fishing targeting marine life illegally within the Reserve, such as sharks (hammerheads and other species) for their fins,[30] and the harvest of sea cucumbers out of season. Development threatens both land and sea species. The growth of both the tourism industry and local populations fuelled by high birth rates and illegal immigration threaten the wildlife of the Archipelago. The grounding of the oil tanker Jessica in 2001 and the subsequent oil spill brought this threat to world attention.

Currently, the rapidly growing problems, including tourism and a human population explosion, are further destroying habitats. Travel Companies, conservation organizations, and other groups have formed IGTOA[31] (International Galapagos Tour Operators Association) that is dedicated to preserve and protect the Galapagos Islands for future generations of travellers. Membership is only open to organizations, but welcomes the involvement of individuals.

In 2007, UNESCO put the Galápagos Islands on their List of World Heritage in Danger because of threats posed by invasive species, unbridled tourism and overfishing.[32] On 29 July 2010, the World Heritage Committee decided to remove the Galapagos Islands from the list because the Committee found significant progress had been made by Ecuador in addressing these problems.[33]

On 28 January 2008, Galapagos National Park official Victor Carrion announced 53 sea lions (13 pups, 25 youngsters, 9 males and 6 females) were killed at the Galapagos Islands nature reserve on Pinta, with their heads caved in. In 2001, poachers killed 35 male sea lions.[34]

The Galápagos Islands were short-listed as a candidate to be one of the New7Wonders of Nature by the New7Wonders of Nature Foundation. As of February 2009, the archipelago was ranked first in Group B, the category for islands.[35]

The islands' biodiversity is under threat from several sources. The human population is growing at an unsustainable rate of 8% per year (1995). Introduced species have caused damage, and in 1996 a US$5 million, five-year eradication plan commenced in an attempt to rid the islands of introduced species such as goats, rats, deer, and donkeys. El Niño has adversely affected the marine ecosystem. And in January 2001, an oil slick from a stranded tanker threatened the islands, but winds and shifting ocean currents helped disperse the oil before much damage was done. The 1997–98 El Niño adversely affected wildlife in the waters surrounding the islands, as the waters were 5 °C (9 °F) warmer than normal. Corals and barnacles suffered, hammerhead sharks were driven away, and most of the island's seabirds failed to breed 1997–98. The mortality rate of marine iguanas rose as the green algae they feed on was replaced by inedible red algae. During the 1982–83 El Niño, 70% of the marine iguanas starved to death because of this.[36]

See also[edit]

References[edit]

  1. ^ "Censo 2010". Instituto Nacional de Estadística y Censos. 2010. Retrieved 13 December 2011. 
  2. ^ Discovery, Darwin and Evolution
  3. ^ "Limits of Oceans and Seas, 3rd edition". International Hydrographic Organization. 1953. Retrieved 7 February 2010. 
  4. ^ "Galápagos Islands." The Columbia Encyclopedia. New York: Columbia University Press, 2008. Credo Reference. Web. 17 September 2012
  5. ^ Pearson, David L., David W. Middleton (1999). The New Key to Ecuador and the Galapagos (3rd ed. ed.). Berkeley: Ulysses Press. 
  6. ^ W. M. White (2 October 1997). "A Brief Introduction to the Geology of the Galapagos". Cornell University Earth and Atmospheric Sciences. Retrieved 14 December 2011. 
  7. ^ Miller, B., Breckheimer, I., McCleary, A., Guzmán-Ramirez, L., Caplow, S., Jones-Smith, J., & Walsh, S. (2010). Using stylized agent-based models for population–environment research: a case study from the Galápagos Islands. Population & Environment, 31(6), 401–426.
  8. ^ Grant, K. Thalia and Estes, Gregory B. 2009. Darwin in Galapagos: Footsteps to a New World. Princeton: Princeton University Press. [1]
  9. ^ Vinueza, L.; Branch, G.; Branch, M.; Bustamante, R. (2006). "Top-down herbivory and bottom-up El Niño effects on Galapagos rocky-shore communities". Ecological Monographs 76 (1): 111–131. doi:10.1890/04-1957. 
  10. ^ Heyerdahl, Thor; & Skjolsvold, Arne (1956). Archaeological Evidence of Pre-Spanish Visits to the Galápagos Islands, Memoirs 12, Society for American Archaeology.
  11. ^ Lundh, Jacob, 1995. "A brief account of some early inhabitants of Santa Cruz Island." In Noticias de Galápagos No. 55. Charles Darwin Foundation for the Galápagos Islands.
  12. ^ Stewart, Paul D. (2006). Galápagos: the islands that changed the world. Yale University Press. p. 43. ISBN 978-0-300-12230-5. 
  13. ^ Jackson, Michael Hume (1993). Galápagos, a natural history. University of Calgary Press. p. 1. ISBN 978-1-895176-07-0. 
  14. ^ Porter, D. (1815/2007) Journal of a Cruise Made to the Pacific Ocean. Kessinger Publishing.
  15. ^ Tarnmoor, Salvator R. (Herman Melville) (1854) Encantadas or the Enchanted Isles. Putnam's Monthly Magazine of American Literature, Science, and Art. March–May 1854.
  16. ^ Perry, Roger; The Galapagos Islands; 1972; Dodd, Mead & Company, New York p. 44 ISBN 978-0396065760
  17. ^ Nickerson, T. (ca. 1876) Account of the Ship Essex Sinking, 1819–1821. Holograph ms. in the Thomas Nickerson Collection, 1819–1876, Folder 1. Nantucket, Massachusetts: Nantucket Historical Society.
  18. ^ Grant, K. Thalia and Estes, Gregory B. 2009. Darwin in Galapagos: Footsteps to a New World. Princeton: Princeton University Press. [2]
  19. ^ a b Niles Eldredge (Spring 2006). "VQR – Confessions of a Darwinist". The Virginia Quarterly Review. pp. 32–53. Retrieved 26 December 2007. 
  20. ^ Keynes, Richard ed. 2000. Charles Darwin's zoology notes & specimen lists from H.M.S. Beagle. Cambridge: Cambridge University Press. June – August 1836, 291–293
  21. ^ "May Sell Galapagos". from "The United Press". The Pittsburgh Press. 21 January 1929. Retrieved 4 September 2012. 
  22. ^ Lund, J.P. Galapagos: A Brief History. http://www.galapagos.to/TEXTS/LUNDH-3.HTM#chap12
  23. ^ Hoff, S. (1985) Drømmen om Galapagos. Oslo: Grøndahl & Sønn
  24. ^ "Galapagos Conservation". 
  25. ^ Stutz, Bruce D., 1995, "The sea cucumber war," Audubon 97.
  26. ^ Grant, K. Thalia. 2009 "Darwin and the Galapagos: Evolution of a Legacy" World Heritage No. 54 [3]
  27. ^ "Galapagos no longer on List of World Heritage in Danger – News Watch". Blogs.nationalgeographic.com. 29 July 2010. Retrieved 23 May 2012. 
  28. ^ Heyerdahl & Skjølsvold, op. cit.
  29. ^ Feral dogs and cats in Galápagos
  30. ^ a b Carr, Lindsey A; Stier, Adrian C; Fietz, Katharina; Montero, Ignacio; Gallagher, Austin J; Bruno, John F (2013). "Illegal shark fishing in the Galapagos marine reserve". Marine Policy 39: 317–321. doi:10.1016/j.marpol.2012.12.005. Retrieved 12 March 2013. 
  31. ^ igtoa.org
  32. ^ "World Heritage in Danger List". UNESCO World Heritage. Retrieved 8 August 2007. 
  33. ^ "World Heritage Committee inscribes the Tombs of Buganda Kings (Uganda) and removes Galapagos Islands (Ecuador)". UNESCO World Heritage. Retrieved 30 July 2010. 
  34. ^ "BBC NEWS, Sea lions massacred in Galapagos". BBC News. 29 January 2008. Retrieved 23 May 2012. 
  35. ^ New 7 Wonders of the World: Live Ranking[dead link]
  36. ^ "Galapagos Islands." The Hutchinson Unabridged Encyclopedia with Atlas and Weather guide. Abington: Helicon, 2010. Credo Reference. Web. 21 September 2012

Further reading[edit]

  • Black, Juan (1973). Galápagos, Archipiélago del Ecuador. (Quito, Ecuador). Comprehensive monograph by a former officer of Galápagos National Park, financed by the World Wildlife Fund and the Charles Darwin Foundation for the Galápagos Islands
  • Grant, K. Thalia and Estes, Gregory B. (2009). Darwin in Galapagos: Footsteps to a New World. Princeton University Press, Princeton. [4].
  • Heyerdahl, Thor; & Skjolsvold, Arne (1956). Archaeological Evidence of Pre-Spanish Visits to the Galápagos Islands, Memoirs 12, Society for American Archaeology.
  • Müller, Bodo; & Stolt, Matthias (2003). Galápagos Die verwunschenen Inseln. (BLV). ISBN 3-86108-909-2.
  • Quammen, David (1996). The Song of the Dodo. Touchstone, New York.
  • Romero, Simon (4 October 2009). "To Protect Galápagos, Ecuador Limits a Two-Legged Species". The New York Times.
  • Perry, Roger (1972). The Galapagos Islands. (Dodd, Mead & Company). Short history illustrated with photographs and a map by a former director of Charles Darwin Research Station.
  • Wittmer, Margret (2013). Floreana: A Woman's Pilgrimage to the Galapagos. (Moyer Bell Limited). Memoir written by the matriarch of the first family to successfully inhabit Floreana, after fleeing Nazi Germany in 1936. 2013 paperback edition ISBN 978-1559213998 (originally published by the Travel Book Club in 1961)

External links[edit]

Media related to Galapagos at Wikimedia Commons