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Amaranthus Brownii
''Amaranthus brownii'' was an Annual plant, annual herbaceous plant, herb in the family Amaranthaceae. The plant was found only on the small island of Nihoa in the Northwestern Hawaiian Islands, growing on rocky outcrops at altitudes of . It was one of nine species of ''Amaranthus'' in the Hawaiian Islands, as well as the only endemism, endemic Hawaiian species of the genus. It is now considered extinction, extinct. ''A. brownii'' was first discovered during the Tanager Expedition in 1923 in science, 1923 by botanist Edward Leonard Caum. It differed from other Hawaiian species of ''Amaranthus'' with its Thorns, spines, and prickles, spineless leaf axils, Leaf shape, linear leaves, and Dehiscence (botany), indehiscent fruits. It was one of Flora of Nihoa, 26 vascular plants on Nihoa, 17 of which are indigenous, six alien, and three endemic only to Nihoa; these latter three included ''A. brownii'', the Nihoa fan palm or ''loulu'', and the Nihoa carnation. ''A. brownii'' was conside ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erling Christophersen
Erling Christophersen (April 17, 1898 – November 9, 1994) was a Norwegian botanist, geographer and diplomat. He participated in and led several notable scientific expeditions in the 20th century, including the fifth Tanager Expedition (1924) to Nihoa and Necker Island (Northwestern Hawaiian Islands), Necker Island and the Norwegian Scientific Expedition to Tristan Da Cunha 1937-1938, Norwegian Scientific Expedition to Tristan da Cunha (1937–1938). Early life Christophersen was born in Oslo, Christiania, Norway (now known as Oslo) in 1898. He attended the University of Christiania from 1918 to 1921, and received his Ph.D. from Yale University in 1924. Christophersen's dissertation, "Soil reaction and plant distribution in the Sylene National Park, Norway", focused on the art and science of applied forest ecology, or silviculture, of alpine plants in Norway. See also: Career Christophersen was a professor of botany at the University of Hawaiʻi at Mānoa from 1929 to 1932. He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Nihoa
This is a list of the flora of Nihoa, an island in the Northwestern Hawaiian Islands, part of the City & County of Honolulu in the U.S. state of Hawaii. Nihoa is listed in the National Register of Historic Places The National Register of Historic Places (NRHP) is the Federal government of the United States, United States federal government's official United States National Register of Historic Places listings, list of sites, buildings, structures, Hist ... and protected under the Papahānaumokuākea Marine National Monument. See also * Hawaiian tropical low shrublands * List of species of the Northwestern Hawaiian Islands References * *{{cite book, editor-last = Evenhuis, editor-first = Neal L. , editor2=Eldredge, Lucius G. , title = Natural History of Nihoa and Necker Islands, publisher = Bishop Museum Press, series = Bishop Museum Bulletin in Cultural and Environmental Studies; No. 1, year = 2004, location = Honolulu, Hawaii, isbn = 1-58178-029-X Exte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest B
A forest is an ecosystem characterized by a dense community of trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' Food and Agriculture Organization (FAO) defines a forest as, "Land spanning more than 0.5 hectares with trees higher than 5 meters and a canopy cover of more than 10 percent, or trees able to reach these thresholds '' in situ''. It does not include land that is predominantly under agricultural or urban use." Using this definition, '' Global Forest Resources Assessment 2020'' found that forests covered , or approximately 31 percent of the world's land area in 2020. Forests are the largest terrestrial ecosystems of Earth by area, and are found around the globe. 45 percent of forest land is in the tropical latitudes. The next largest share of forests are found in subarctic climates, followed by temperate, and subtro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smithsonian Institution
The Smithsonian Institution ( ), or simply the Smithsonian, is a group of museums, Education center, education and Research institute, research centers, created by the Federal government of the United States, U.S. government "for the increase and diffusion of knowledge". Founded on August 10, 1846, it operates as a trust instrumentality and is not formally a part of any of the Federal government of the United States#branches, three branches of the federal government. The institution is named after its founding donor, British scientist James Smithson. It was originally organized as the United States National Museum, but that name ceased to exist administratively in 1967. The Smithsonian Institution has historical holdings of over 157 million items, 21 museums, 21 libraries, 14 education and research centers, a zoo, and historical and architectural landmarks, mostly located in Washington, D.C. Additional facilities are located in Maryland, New York (state), New York, and Virg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bishop Museum
The Bernice Pauahi Bishop Museum, designated the Hawaii State Museum of Natural and Cultural History, is a museum of history and science in the historic Kalihi district of Honolulu, Hawaii, Honolulu on the Hawaiian island of Oʻahu. Founded in 1889, it is the largest museum in Hawaiʻi and has the world's largest collection of Polynesian Triangle, Polynesian cultural artifacts and natural history specimens. Besides the comprehensive exhibits of Hawaiiana, Hawaiian cultural material, the museum's total holding of natural history specimens exceeds 24 million, of which the entomological collection alone represents more than 13.5 million specimens (making it the third-largest insect collection in the United States). The ''Index Herbariorum'' code assigned to Herbarium Pacificum of this museum is BISH and this abbreviation is used when citing housed herbarium specimens. The museum complex is home to the Richard T. Mamiya Science Adventure Center. History Establishment Charles Reed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Critically Endangered Species
An IUCN Red List critically endangered (CR or sometimes CE) species is one that has been categorized by the International Union for Conservation of Nature as facing an extremely high risk of extinction in the wild. As of December 2023, of the 157,190 species currently on the IUCN Red List, 9,760 of those are listed as critically endangered, with 1,302 being possibly extinct and 67 possibly extinct in the wild. The IUCN Red List provides the public with information regarding the conservation status of animal, fungi, and plant species. It divides various species into seven different categories of conservation that are based on habitat range, population size, habitat, threats, etc. Each category represents a different level of global extinction risk. Species that are considered to be critically endangered are placed within the "Threatened" category. As the IUCN Red List does not consider a species extinct until extensive targeted surveys have been conducted, species that are p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered Species Act
The Endangered Species Act of 1973 (ESA; 16 U.S.C. § 1531 et seq.) is the primary law in the United States for protecting and conserving imperiled species. Designed to protect critically imperiled species from extinction as a "consequence of economic growth and development untempered by adequate concern and conservation", the ESA was signed into law by President Presidency of Richard Nixon#Environmental policy, Richard Nixon on December 28, 1973. The Supreme Court of the United States described it as "the most comprehensive legislation for the preservation of endangered species enacted by any nation"."Tennessee Valley Authority v. Hill" 437 U.S. 153 (1978) Retrieved 24 November 2015. The purposes of the ESA are two-fold: to prevent extinction and to recover species to the point wher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papahānaumokuākea Marine National Monument
The Papahānaumokuākea Marine National Monument (PMNM) (roughly ) is a World Heritage Site, World Heritage listed National monument (United States), U.S. national monument encompassing of ocean waters, including ten islands and atolls of the Northwestern Hawaiian Islands. It was created in June 2006 with and expanded in August 2016 by moving its border to the limit of the Exclusive economic zone of the United States, exclusive economic zone, making it one of the List of largest protected areas, world's largest protected areas. It is internationally known for its cultural and natural values as follows: The area has deep cosmological and traditional significance for living Native Hawaiians, Native Hawaiian culture, as an ancestral environment, as an embodiment of the Hawaiian kinship, Hawaiian concept of kinship between people and the natural world, and as the place where it is believed that life originates and to where the spirits return after death. On two of the islands, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawaiian Islands National Wildlife Refuge
Hawaiian may refer to: * Native Hawaiians, the current term for the indigenous people of the Hawaiian Islands or their descendants * Hawaii state residents, regardless of ancestry (only used outside of Hawaii) * Hawaiian language, a Polynesian language originally spoken on the eight major islands of the Hawaiian archipelago Historic uses * things and people of the Kingdom of Hawaii, during the period from 1795 to 1893 * things and people of the Republic of Hawaii, the short period between the overthrow of the monarchy and U.S. annexation * things and people of the Territory of Hawaii, during the period the area was a U.S. territory from 1898 to 1959 * things and people of the Sandwich Islands, the name used for the Hawaiian Islands around the end of the 18th century Other uses * Hawaiian Airlines, a commercial airline based in Hawaii * Hawaiian pizza, a style of pizza topped with pineapple See also * Hawaiians (other) * Hawaiian cuisine (other) * Hawaiian Isl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Fish And Wildlife Service
The United States Fish and Wildlife Service (USFWS or FWS) is a List of federal agencies in the United States, U.S. federal government agency within the United States Department of the Interior which oversees the management of fish, wildlife, and natural habitats in the United States. The mission of the agency is "working with others to conserve, protect, and enhance fish, wildlife, plants and their habitats for the continuing benefit of the American people." Among the responsibilities of the USFWS are enforcing federal wildlife laws; protecting endangered species; managing migratory birds; restoring nationally significant fisheries; conserving and restoring wildlife habitats, such as wetlands; helping foreign governments in international conservation efforts; and distributing money to fish and wildlife agencies of U.S. states through the Wildlife Sport Fish and Restoration Program. The vast majority of fish and wildlife habitats are on U.S. state, state or private land not co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Island Restoration
The ecological restoration of islands, or island restoration, is the application of the principles of ecological restoration to islands and island groups. Islands, due to their isolation, are home to many of the world's endemic (ecology), endemic species, as well as important breeding grounds for seabirds and some marine mammals. Their ecosystems are also very vulnerable to human disturbance (ecology), disturbance and particularly to introduced species, due to their small size. Island groups, such as New Zealand and Hawaii, have undergone substantial extinctions and losses of Habitat (ecology), habitat. Since the 1950s several organisations and government agencies around the world have worked to restore islands to their original states; New Zealand has used them to hold natural populations of species that would otherwise be unable to survive in the wild. The principal components of island restoration are the removal of introduced species and the reintroduction of native species. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
