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Hahajima is the second-largest island of the Ogasawara Islands south of the Japanese main island chain. It is about 21 km2 (8 sq mi) in area with a population of 440.
The conservation status of a group of organisms indicates whether the group still exists and how likely the group is to become extinct in the near future. Many factors are taken into account when assessing conservation status: not simply the number of individuals remaining, but the overall increase or decrease in the population over time, breeding success rates, and known threats. Various systems of conservation status exist and are in use at international, multi-country, national and local levels as well as for consumer use.
Tennessee Valley Authority v. Hiram Hill et al., or TVA v. Hill, 437 U.S. 153 (1978), was a United States Supreme Court case and the Court's first interpretation of the Endangered Species Act of 1973. After the discovery of the snail darter fish in the Little Tennessee River in August 1973, a lawsuit was filed alleging that the Tennessee Valley Authority (TVA)'s Tellico Dam construction was in violation of the Endangered Species Act. Plaintiffs argued dam construction would destroy critical habitat and endanger the population of snail darters. It was decided by a 6-3 vote, in which the U.S. Supreme Court ruled in favor of Hill, et al. and granted an injunction stating that there would be conflict between Tellico Dam operation and the explicit provisions of Section 7 of the Endangered Species Act.
The Kanab ambersnail, scientific name Oxyloma haydeni kanabense or Oxyloma kanabense, is a critically endangered subspecies or species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Succineidae, the amber snails. The common name of the amber snails is based on the shell, which is translucent and when empty usually resembles the color of amber.
Succineidae are a family of small to medium-sized, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the superfamily Succineoidea.
Vertigo angustior, the narrow-mouthed whorl snail, is a species of minute land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae, the whorl snails.
The Endangered Species Act (ESA) was first passed in 1973 and forms the basis of biodiversity and endangered species protection in the United States. The original purpose of the Endangered Species Act of 1973 was to prevent species endangerment and extinction due to the human impact on natural ecosystems. The three most powerful sections of the ESA are Sections 4,7 and 9. Section 4 allows the Secretaries of Interior and Commerce to list species as threatened or endangered based on best available data. Section 7 requires federal agencies to consult with Fish and Wildlife Service (FWS) or National Marine Fisheries Service (NMFS) before taking any action that may threaten a listed species. Section 9 forbids the taking of an endangered species. The first amendment to the ESA was passed by the 95th United States Congress in 1978 to "introduce some flexibility into the Endangered Species Act."
Hacrochlamys lineolatus is a species of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Euconulidae, the hive snails.
Neophaedusa spelaeonis, in Japanese: Kazaanagiseru, is a species of small, air-breathing land snail, terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails, all of which have a clausilium.
Ogasawarana yoshiwarana is a species of land snail with an operculum, a terrestrial gastropod mollusk in the family Helicinidae, the helicinids.
Trochochlamys ogasawarana is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Chronidae.
Megalophaedusa martensi is a species of medium-sized air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails, all of which have a clausilium.
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and invasive species. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration.
Pomacea maculata is a species of large freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails.
Boysidia megaphonum is a species of terrestrial pulmonate gastropod in the family Vertiginidae, the whorl snails.
Hypselostoma perigyra is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Vertiginidae, the whorl snails.
Hypselostoma is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Vertiginidae, the whorl snails.
Hypselostoma lacrima is a species of minute pulmonate gastropod of the family Hypselostomatidae endemic to limestone precipices in Guangxi, China.
Gastrocoptidae is a family of minute, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the superfamily Pupilloidea.
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Pilsbry H. A. (1908). "Two genera of land snails new to Japan and Korea". The Conchological magazine, Kyoto, 2(8): 39-42. - ↑ (in Japanese) ラッパガイ Hypselostoma insularum. Japanese Red Data Book, accessed 21 April 2010.
