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Cornutia Obovata
''Cornutia obovata'' is a rare species of tree in the mint family, and formerly considered a member of the verbena family.Bramley, G., et alNeotropical Lamiaceae.Royal Botanic Gardens, Kew, UK. It is endemic to forested slopes in Puerto Rico, where its common names are ''capá jigüerilla'', ''nigua'', and ''palo de nigua''.World Conservation Monitoring Centre. (1998)''Cornutia obovata'' IUCN Red List of Threatened Species. IUCN 2010www.iucnredlist.org . Retrieved on 19 February 2011. When it was added to the endangered species list of the United States in 1988 there were only seven individuals known to remain in the wild.USFWSDetermination of endangered status for ''Cornutia obovata'' (palo de nigua).''Federal Register'' April 24, 1987. By 1998 there were eight plants known. This is considered one population divided amongst a few locations in the mountain forests of the island. This is an evergreen tree which can reach 10 meters in maximum height and 15 centimeters in trunk di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ignatz Urban
Ignatz Urban (7 January 1848 – 7 January 1931) was a German botanist. He is known for his contributions to the flora of the Caribbean and Brazil, and for his work as curator of the Berlin Botanical Garden. Born the son of a brewer, Urban showed an interest in botany as an undergraduate. He pursued further study at the University of Bonn and later at the University of Berlin where he gained a doctorate in 1873. Urban was appointed by A. W. Eichler to run the Berlin Botanical Garden and supervised its move to Dahlem. He also worked as Eichler's assistant on the ''Flora Brasiliensis'', later succeeding him as editor. In 1884 Urban began working with Leopold Krug on his Puerto Rican collections, a collaboration would later produce the nine-volume '' Symbolae Antillanae'', one of his most important contributions, and his 30-part ''Sertum Antillanum''. Urban's herbarium, estimated to include 80,000 or more sheets, was destroyed when the Berlin Herbarium was bombed in 1943 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serpentine Soil
Serpentine soil is an uncommon soil type produced by weathered ultramafic rock such as peridotite and its metamorphic derivatives such as serpentinite. More precisely, serpentine soil contains minerals of the serpentine subgroup, especially antigorite, lizardite, and chrysotile or white asbestos, all of which are commonly found in ultramafic rocks. The term "serpentine" is commonly used to refer to both the soil type and the mineral group which forms its parent materials. Serpentine soils exhibit distinct chemical and physical properties and are generally regarded as poor soils for agriculture. The soil is often reddish, brown, or gray in color due to its high iron and low organic content. Geologically, areas with serpentine bedrock are characteristically steep, rocky, and vulnerable to erosion, which causes many serpentine soils to be rather shallow. The shallow soils and sparse vegetation lead to elevated soil temperatures and dry conditions. Due to their ultramafic origin, ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fairchild Tropical Garden
Fairchild Tropical Botanic Garden is an botanic garden with extensive collections of rare tropical plants including palms, cycads, flowering trees, and vines. It is located in the city of Coral Gables, Miami-Dade County, just south of Miami, surrounded at the north and west by Matheson Hammock Park. Fairchild opened to the public in 1938. Fairchild is a museum, laboratory, learning center, and conservation research facility whose main role is preserving biodiversity. It has 45,000 members and more than 1,200 volunteers. In 2012, Fairchild became the home of the American Orchid Society. History The garden was established in 1936 by Robert H. Montgomery (1872–1953), an accountant, attorney, and businessman with a passion for plant-collecting. Montgomery pursued the creation of a botanical garden in Miami. He purchased the 83-acre site along Biscayne Bay and later deeded it in large part to Miami-Dade County. Montgomery named the garden after his friend, renowned plant e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deforestation
Deforestation or forest clearance is the removal of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated deforestation occurs in tropical rainforests. About 31% of Earth's land surface is covered by forests at present. This is one-third less than the forest cover before the expansion of agriculture, a half of that loss occurring in the last century. Between 15 million to 18 million hectares of forest, an area the size of Bangladesh, are destroyed every year. On average 2,400 trees are cut down each minute. The Food and Agriculture Organization of the United Nations defines deforestation as the conversion of forest to other land uses (regardless of whether it is human-induced). "Deforestation" and "forest area net change" are not the same: the latter is the sum of all forest losses (deforestation) and all forest gains (forest expansion) in a gi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinction
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camponotus Atriceps
''Camponotus atriceps'', previously referred as ''C. abdominalis'', is a species of carpenter ant, endemic to the Americas. Habitat It has been found in a variety of moist and forested habitats, including wet lowland and rainforest, tropical rainforests, pine or oak forests, wet montane forest, and in mature wet forest. It occurs from near sea level to as high as 2,290 meters. Races There are two accepted races: * ''Camponotus atriceps atriceps'' * ''Camponotus atriceps nocens'' Parasites A variety of parasites have been identified from the subspecies, ''Camponotus abdominalis floridanus''. These include the inquilines '' Microdon fulgens'', ''Myrmecophila pergandei'', an undetermined species of Atelurinae, ''Alachua floridensis'' and ''Obeza floridana''. The cockroach, '' Myrmecoblatta wheeleri'' has also been found associated with the ant in southern Florida. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nectar
Nectar is a sugar-rich liquid produced by plants in glands called nectaries or nectarines, either within the flowers with which it attracts pollinating animals, or by extrafloral nectaries, which provide a nutrient source to animal mutualists, which in turn provide herbivore protection. Common nectar-consuming pollinators include mosquitoes, hoverflies, wasps, bees, butterflies and moths, hummingbirds, honeyeaters and bats. Nectar plays a crucial role in the foraging economics and evolution of nectar-eating species; for example, nectar foraging behavior is largely responsible for the divergent evolution of the African honey bee, ''A. m. scutellata'' and the western honey bee. Nectar is an economically important substance as it is the sugar source for honey. It is also useful in agriculture and horticulture because the adult stages of some predatory insects feed on nectar. For example, a number of parasitoid wasps (e.g. the social wasp species ''Apoica flavissima'') rely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miconia Sintenisii
''Miconia'' is a genus of flowering plants in the glory bush family, Melastomataceae, native to warm temperate to tropical regions of the Americas. The species are mostly shrubs and small to medium-sized trees up to 15 m tall. The generic name honours Catalan physician and botanist Francesc Micó. Some species are known by the common name johnnyberry. Many species are threatened by habitat destruction in their native range, and some are feared to be on the brink of extinction. On the other hand, '' M. calvescens'' is a contributing factor in the decline and maybe even extinction of other plants: it has become a highly invasive weed on a number of Pacific Islands where it was introduced, including Hawaii and Tahiti. It is often referred to as the "purple plague" or the "green cancer" in reference to its habit of overgrowing native ecosystems, and its leaves which are bright green above and bright purple below. ''Miconia'' fruit are a favorite food of many birds (invasive ''M. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guettarda Ovalifolia
''Guettarda'' is a plant genus in the family Rubiaceae. Most of these plants are known by the common name velvetseed. Estimates of the number of species range from about 50 Anthony J. Huxley, Mark Griffiths, and Margot Levy (editors). 1992. ''The New Royal Horticultural Society Dictionary of Gardening.'' The Macmillan Press Limited, London; The Stockton Press, New York. (set) to 162.''Guettarda'' At: World Checklist of Rubiaceae At: Kew Gardens Website. (see ''External links'' below). Most of the species are neotropical.David J. Mabberley. 2008. ''Mabberley's Plant-Book'' third edition (2008). Cambridge University Press: UK. Twenty are found in New Caledonia and one reaches Australia. A few others are found on islands and in coastal areas of the Indian and Pacific Oceans. Three species (''G. odorata, G. scabra, G. speciosa'') are known in cultivation. ''Guettarda argentea'' provides edible fruit. The type species for the genus is ''Guettarda speciosa''.''Guettarda'' In: Index ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendropanax Laurifolius
''Dendropanax laurifolius'' is a tree in the family Araliaceae. It is endemic to Puerto Rico Puerto Rico (; abbreviated PR; tnq, Boriken, ''Borinquen''), officially the Commonwealth of Puerto Rico ( es, link=yes, Estado Libre Asociado de Puerto Rico, lit=Free Associated State of Puerto Rico), is a Caribbean island and Unincorporated ..., and is found in moist regions of forests at middle or high elevations.Page 149, ''Flora of Puerto Rico and adjacent islands: a systematic synopsis'' Alain H. Liogier, Luis F. Martorell. Published by La Editorial, UPR, 2000. / References Araliaceae Endemic flora of Puerto Rico Flora without expected TNC conservation status {{Araliaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daphnopsis Philippiana
''Daphnopsis'' is a plant genus in the family Thymelaeaceae. There are 50 to 65 species distributed in the Neotropics. They are shrubs and small trees with tubular or bell-shaped flowers. Individuals are dioecious, with male and female flowers produced on separate trees. The Plant List The Plant List. accepts the following species: *'''' Nevling *'' Daphnopsis alpestris'' (Gardner) Benth. & Hook.f. ex B.D.Jacks. *'' Daphnopsis americana [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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