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The Bonin Islands is comprised of oceanic islands located within the subtropical zone of the northwestern Pacific Ocean. Although species richness is low, high endemism is found on the islands due to physical isolation of the unique biota. However, human settlement began in 1830, causing extensive deforestation and the introduction of invasive species. At the height of prosperity, at least 14 islands...
The Bonin Islands are oceanic islands that have never been connected with the Japanese mainland, as such they remained free of terrestrial mammalian carnivores until human settlement began in 1830. Shortly thereafter, however, the domestic cat Felis catus was introduced to the islands by settlers and became feral (Obana 1877). The number of feral cats has increased to the point where they are now...
The Bonin Islands are oceanic islands situated in the northwest Pacific Ocean 1,000 km south of the Japanese main island of Honshu. These islands lacked terrestrial mammalian carnivores until human colonization in 1830. Early immigrants introduced domestic cats Felis earns to the islands, some of which escaped from the island's residential area. Even by 1877 there were already reports of there being...
The black rat Rattus rattus is one of the most invasive alien species in the Bonin Islands and has been recorded on at least 16 of the islands. Higashijima, an uninhabited satellite island of Chichijima, provides breeding sites for thousands of Bulwer's petrels ( Bulweria bulwerii), and a massive die-off of this small petrel caused by rat predation was detected there in 2006. In total, 237 adult carcasses...
The eradication of invasive species is one way to maintain biodiversity on oceanic islands. In the Bonin Islands, eradication programs for goats, pigs, rats, Bischofia javanica, and so on, are either ongoing or complete on several islands. However, the islands are still suffering from the impacts of increasing numbers of invasive species, such as green anoles ( Anolis carolinensis ) and flatworms...
Loss of biodiversity on tropical and subtropical oceanic islands is one of the most pressing conservation issues. These oceanic islands are well known for their unique fauna and ? ora, which evolved over long periods in isolation from external perturbation. However, the maj- ity of these islands in the Paci? c were eventually settled by Polynesians and then by Europeans; by about 200 years ago, only...
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