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Trindade and Martim Vaz

Archipelago in Brazil

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Trindade is a volcanic island off the coast of the Brazilian state of Espirito Santo . It constitutes an archipelago with Martim Vaz. The distance to the nearest coast of mainland Brazil is 1167 km, a
Simone Marinho · CC BY-SA 3.0

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The islands are of volcanic origin and have rugged terrain; the date of last eruption in the island is unknown, but occurred on the southeastern tip of the island at Vulcão de Paredão. They are largely barren, except for the southern part of Trindade. They were discovered in 1502 by Portuguese explorer Estêvão da Gama and stayed Portuguese until they became part of Brazil at its independence in 1822. From 1895 to 1896, Trindade was occupied by the United Kingdom until an agreement with Brazil was reached. During the period of British occupation, Trindade was known as South Trinidad.

The islands are situated some 2,100 kilometres (1,300 miles) southwest of Ascension Island and 2,550 kilometres (1,580 miles) west of Saint Helena, and the distance to the west coast of Africa is 4,270 kilometres (2,650 miles).

Due to the introduction of invasive species, such as sheep, the island's biodiversity has heavily deteriorated since the second half of the 20th century, with many indigenous species having become endangered.

Geography

The individual islands with their respective locations are given in the following:

  • Ilha da Trindade (Portuguese for "Trinity Island") (20°31′30″S 29°19′30″W / 20.52500°S 29.32500°W)
  • Ilhas de Martim Vaz (20°30′00″S 28°51′00″W / 20.50000°S 28.85000°W)
    • Ilha do Norte ("North Island"), 300 metres (980 feet) north-northwest of Ilha da Racha, 75 metres (246 feet) high. (20°30′00″S 28°51′00″W / 20.50000°S 28.85000°W)
    • Ilha da Racha ("Crack Island") or Ilha Martim Vaz, the largest, 175 metres (574 feet) high near the northwest end. The shores are strewn with boulders. (20°30′18″S 29°20′42″W / 20.50500°S 29.34500°W)
    • Rochedo da Agulha ("Needle Rock"), a flat circular rock 200 metres (660 feet) northwest of Ilha da Racha, is 60 metres (200 feet) high.
    • Ilha do Sul ("South Island"), 1,600 metres (5,200 feet) south of Ilha da Racha, is a rocky pinnacle. Ilha do Sul is the easternmost point of Brazil. (20°31′00″S 28°51′00″W / 20.51667°S 28.85000°W)

Trindade

Trindade is a mountainous, desiccated volcanic island. The highest summit is Pico Desejado, near the center, 620 metres (2,030 feet) high. Nearby to the northwest are Pico da Trindade (590 m (1,940 ft)) and Pico Bonifácio (570 m (1,870 ft)). Pico Monumento, a remarkable peak in the form of a slightly inclined cylinder, rises from the west coast to 270 m (890 ft). Until around 1850, between 75 and 85% of the island was covered by a forest of Colubrina glandulosa trees, 15m in height and 40 cm trunk diameter. The introduction of non-native animals (like goats, pigs, sheep, etc.), and the indiscriminate cutting of trees, led to total extirpation of the forest, causing heavy erosion on the island, with a loss of about 1 to 2 meters of fertile soils. The effect of this devastation impaired the flow of water streams, with the depletion of several springs.

There is a small settlement in the north on the shore of a cove called Enseada dos Portugueses, supporting a garrison of the Brazilian Navy, 32 strong.

The archipelago is the main nesting site of the green sea turtle in Brazil. There are also large numbers of breeding seabirds, including the endemic subspecies of the Great frigatebird (Fregata minor nicolli) and Lesser frigatebird (F. ariel trinitatis), and it is the only Atlantic breeding site for the Trindade petrel. Humpback whales have been confirmed to use the Trindade island as a nursery.

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