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The Pitcairn Islands, officially the Pitcairn, Henderson, Ducie and Oeno Islands, are a group of four volcanic islands in the southern Pacific Ocean that form the sole British Overseas Territory in the Pacific Ocean. The four islands—Pitcairn, Henderson, Ducie and Oeno—are scattered across several hundred miles of ocean and have a combined land area of about 18 square miles (47 km2). Henderson Island accounts for 86% of the land area, but only Pitcairn Island is inhabited. The islands nearest to the Pitcairn Islands are Mangareva at 688 km to the west and Easter Island at 1,929 km to the east.
Henderson Island is an uninhabited island in the south Pacific Ocean. It is part of the Pitcairn Island Group, together with Pitcairn, Oeno, and Ducie Islands. Measuring 9.6 by 5.1 kilometres, it has an area of 37.3 km2 (14.4 sq mi) and is located 193 km (104 nmi) northeast of Pitcairn Island. It has poor soil and little fresh water, and is unsuitable for agriculture. There are three beaches on the northern end and the remaining coast comprises steep cliffs up to 15 m (50 ft) in height. In 1902, it was annexed to the Pitcairn Islands colony, which is now a British Overseas Territory.
Ducie Island is an uninhabited atoll in the Pitcairn Islands. It lies east of Pitcairn Island, and east of Henderson Island, and has a total area of 1.5 square miles (3.9 km2), which includes the lagoon. It is 1.5 miles (2.4 km) long, measured northeast to southwest, and about 1 mile (1.6 km) wide. The island is composed of four islets: Acadia, Pandora, Westward and Edwards.
Diastole tenuistriata is a species of air-breathing land snails or semi-slugs, terrestrial pulmonate gastropod mollusks in the family Helicarionidae. This species is endemic to the Pitcairn Islands, a British territory in the southern Pacific Ocean.
Nesopupa is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Nesopupinae of the family Vertiginidae.
Ptychalaea is a fossil genus of very small, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Gastrocoptidae.
Sinployea pitcairnensis is a species of land snail in the family Charopidae. It is endemic to Pitcairn.
Tubuaia fosbergi is a species of air-breathing land snail or semislug, a terrestrial pulmonate gastropod mollusk in the family Helicarionidae. This species is endemic to the Pitcairn Islands.
Achatinellidae is a family of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Pupilloidea.
Diastole is a genus of air-breathing land snails or semi-slugs, terrestrial pulmonate gastropod mollusks in the family Euconulidae.
Allopeas gracile, common name the graceful awlsnail, is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.
The Tuamotu tropical moist forests is a tropical and subtropical moist broadleaf forests ecoregion in the Tuamotu Archipelago of French Polynesia and the Pitcairn Islands.
References
- ↑ Robert Irving; Terry Dawson (August 2012). The Marine Environment of the Pitcairn Islands (PDF). Pew Environment Group. Archived from the original (PDF) on 21 September 2017. Retrieved 21 October 2019.
- ↑ Tim Male. "French Polynesia (France), Pitcairn Island (Great Britain)". World Wildlife Fund . Retrieved 21 October 2019.
Henderson Island was occupied by Polynesians from 800 to 1600 but not since, and it has now been set aside as a World Heritage Site by UNESCO. Conservation organizations are working with Pitcairn Islanders to establish a management plan that will protect the flora and fauna of Henderson, Oeno, and Ducie Islands from introduced species and unsustainable use (Vickery 1994). In addition, some of Pitcairn's 22 species of land snail and plant species occupy less than 1 hectare of habitat, and forest conservation and control of the invasive tree Syzygium jambos is important for the survival of both snail and plant species (Preece 1995).
- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Preece R. C. (1995) "Systematic review of the land snails of the Pitcairn Islands". Biological Journal of the Linnean Society 56(1-2): 273-307. doi : 10.1111/j.1095-8312.1995.tb01091.x abstract