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Saipan Reed Warbler
The Saipan reed warbler or gå'ga' karisu in Chamorro (''Acrocephalus hiwae'') is an endangered songbird of the Northern Mariana Islands. Taxonomy It is sometimes considered a subspecies of the extinct nightingale reed warbler (''A. luscinius)'' by some taxonomists. Distribution and habitat It occurs on two islands: Saipan and Alamagan. An estimated population of 2700 birds was reported in 2009 on Saipan, and on Alamagan 950 birds were reported in 2010. It inhabits wetlands, thickets and the margins of forests. Description The Saipan reed warbler is approximately long, and is greyish olive-brown above with a pale-yellow underside. The female is slightly smaller than the male. Both sexes have a long bill compared to other reed warbler species. Conservation Threats to the survival of the Saipan reed warbler include habitat destruction Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yoshimaro Yamashina
Marquis was a Japanese ornithologist. He was the founder of the Yamashina Institute for Ornithology. Biography Yamashina was born in Kōjimachi, Tokyo, the second son of Prince Kikumaro Yamashina and Princess Noriko (Kujo) Yamashina. Through his mother, a half-sister of the Crown Princess Sadako, he was the nephew of the then Crown Prince Yoshihito, the future Taishō Emperor. He developed a love of birds at an early age, which were found in abundance on the vast Yamashina estate in Tokyo. He was presented with a stuffed mandarin duck for his sixth birthday present. Yamashina attended the Gakushuin Peer's School, and per the orders of Emperor Meiji entered the Imperial Japanese Army, graduating from the 33rd class of the Imperial Japanese Army Academy with a specialty in artillery. In 1920, per a revision in the Imperial Household Law, he lost his status as an imperial prince, and became a member of the ''kazoku'' with the peerage title of marquis (''kōshaku'') on 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Mariana Islands
The Northern Mariana Islands, officially the Commonwealth of the Northern Mariana Islands (CNMI), is an Territories of the United States, unincorporated territory and Commonwealth (U.S. insular area), commonwealth of the United States consisting of 14 islands in the northwestern Pacific Ocean.Lin, Tom C.W.Americans, Almost and Forgotten 107 California Law Review (2019) The CNMI includes the 14 northernmost islands in the Mariana Islands, Mariana Archipelago; the southernmost island, Guam, is a separate U.S. territory. The Northern Mariana Islands were listed by the United Nations as a non-self-governing territory until 1990. During the colonial period, the Northern Marianas were variously under the control of the Spanish Empire, Spanish, German colonial empire, German, and Empire of Japan, Japanese empires. After World War II, the islands were part of the United Nations trust territories under American administration before formally joining the United States as a territory in 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nightingale Reed Warbler
The nightingale reed warbler (''Acrocephalus luscinius''), or Guam reed-warbler, is an extinct songbird that was endemic to Guam. Taxonomy and systematics The nightingale reed warbler was described by the French zoologists Jean Quoy and Joseph Gaimard in 1832 from a specimen collected on the island of Guam in the western Pacific Ocean. They coined the binomial name, ''Thryothorus luscinius''. Until 2011, the Pagan reed warbler, Aguiguan reed warbler, and Saipan reed warbler were considered as subspecies of the nightingale reed warbler until split by the IOC. Extinction The nightingale reed warbler was driven to extinction by several introduced species. These included the brown tree snake (''Boiga irregularis'') which has also decimated the populations or even caused the extinctions of several other bird species on Guam. Other introduced predators included rats (''Rattus'' sp.), cats (''Felis catus'') and feral ungulates such as goats (''Capra hircus'') or sheep (''Ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saipan
Saipan () is the largest island and capital of the Northern Mariana Islands, an unincorporated Territories of the United States, territory of the United States in the western Pacific Ocean. According to 2020 estimates by the United States Census Bureau, the population of Saipan was 43,385. Its people have been United States citizens since the 1980s. Saipan is one of the main homes of the Chamorro people, Chamorro, the Indigenous peoples of Oceania, indigenous people of the Mariana Islands. Saipan has been inhabited for over four thousand years. From the 17th century, the island experienced Spanish Empire#Pacific exploration and trade, Spanish occupation and rule until the Spanish–American War of 1898, when Saipan was briefly occupied by the United States, before being German–Spanish Treaty (1899), formally sold German New Guinea#Imperial German Pacific protectorates, to Germany. About 15 years of German rule were South Seas Mandate, followed by 30 years of Empire of Japan, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alamagan
Alamagan is an island in the Northern Mariana Islands in the Pacific Ocean, north of Guguan, north of Saipan, and south of Pagan. It is currently undergoing resettlement since 2018, with a few people living there. The project was coordinated by the Northern Islands Mayor's office and the people there have radio contact with the mainland. History Alamagan was once settled by the Chamorros, who left behind archaeological evidence including stone columns (called latte stones) and ceramics. From a European perspective, Alamagan was discovered in 1669 by the Spanish missionary Diego Luis de San Vitores, who named it ''Concepción'' (Immaculate Conception in Spanish). It is likely that it was previously visited in 1522 by the Spanish sailor Gonzalo de Vigo, a deserter from the Magellan expedition in 1521 and the first European castaway in the history of the Pacific. In 1695, Alamagan's natives were forcibly removed to Saipan, and three years later to Guam. Following the sale of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wetlands
A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen-poor ( anoxic) processes taking place, especially in the soils. Wetlands form a transitional zone between waterbodies and dry lands, and are different from other terrestrial or aquatic ecosystems due to their vegetation's roots having adapted to oxygen-poor waterlogged soils. They are considered among the most biologically diverse of all ecosystems, serving as habitats to a wide range of aquatic and semi-aquatic plants and animals, with often improved water quality due to plant removal of excess nutrients such as nitrates and phosphorus. Wetlands exist on every continent, except Antarctica. The water in wetlands is either freshwater, brackish or saltwater. The main types of wetland are defined based on the dominant plants and the source of the water. For example, ''marshes'' are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reed Warbler
The ''Acrocephalus'' warblers are small, insectivorous passerine birds belonging to the genus ''Acrocephalus''. Formerly in the paraphyletic Old World warbler assemblage, they are now separated as the namesake of the marsh and tree warbler family Acrocephalidae. They are sometimes called marsh warblers or reed warblers, but this invites confusion with marsh warbler and reed warbler. These are rather drab brownish warblers usually associated with marshes or other wetlands. Some are streaked, others plain. Many species breeding in temperate regions are migratory. This genus has heavily diversified into many species throughout islands across the tropical Pacific. This in turn has led to many of the resulting insular endemic species to become endangered. Several of these species (including all but one of the species endemic to the Marianas and two endemic to French Polynesia) have already gone extinct. The most enigmatic species of the genus, the large-billed reed warbler (''A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Destruction
Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease in biodiversity and species numbers. Habitat destruction is in fact the leading cause of biodiversity loss and species extinction worldwide. Humans contribute to habitat destruction through the use of natural resources, agriculture, industrial production and urbanization (urban sprawl). Other activities include mining, logging and trawling. Environmental factors can contribute to habitat destruction more indirectly. Geological processes, climate change, introduction of invasive species, ecosystem nutrient depletion, water and noise pollution are some examples. Loss of habitat can be preceded by an initial habitat fragmentation. Fragmentation and loss of habitat have become one of the most important topics of research in ecology as the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acrocephalus (bird)
The ''Acrocephalus'' warblers are small, insectivorous passerine birds belonging to the genus ''Acrocephalus''. Formerly in the paraphyletic Old World warbler assemblage, they are now separated as the namesake of the marsh and tree warbler family Acrocephalidae. They are sometimes called marsh warblers or reed warblers, but this invites confusion with marsh warbler and Eurasian reed warbler, reed warbler. These are rather drab brownish warblers usually associated with marshes or other wetlands. Some are streaked, others plain. Many species breeding in temperate regions are bird migration, migratory. This genus has heavily diversified into many species throughout islands across the tropical Pacific Ocean, Pacific. This in turn has led to many of the resulting insular Endemism, endemic species to become Endangered species, endangered. Several of these species (including all but one of the species endemic to the Mariana Islands, Marianas and two endemic to French Polynesia) have al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of The Northern Mariana Islands
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the bee hummingbird to the common ostrich. There are over 11,000 living species and they are split into 44 orders. More than half are passerine or "perching" birds. Birds have wings whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have furt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
