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Gymnostemon
''Gymnostemon'' is a monotypic genus of plants in the family Simaroubaceae. The sole species, ''Gymnostemon zaizou'', is semi-deciduous forest tree. It is endemic to Côte d'Ivoire and threatened by habitat loss throughout its native range of the Sassandra River Basin. ''G. zaizou'' is a commercial hardwood Hardwood is wood from dicot trees. These are usually found in broad-leaved temperate and tropical forests. In temperate and boreal latitudes they are mostly deciduous, but in tropics and subtropics mostly evergreen. Hardwood (which comes from ... species that is well-adapted to the heavy rainfall of western Africa. Wood from this species of tree is also used locally to make barred percussion instruments. References Simaroubaceae Monotypic Sapindales genera Endemic flora of Ivory Coast Trees of Africa Vulnerable flora of Africa Taxonomy articles created by Polbot Taxa named by François Pellegrin Taxa named by André Aubréville {{rosid-tree-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simaroubaceae
The Simaroubaceae are a small, mostly tropical, family in the order Sapindales. In recent decades, it has been subject to much taxonomic debate, with several small families being split off. A molecular phylogeny of the family was published in 2007, greatly clarifying relationships within the family. Together with chemical characteristics such as the occurrence of petroselinic acid in ''Picrasma'', in contrast to other members of the family such as '' Ailanthus'', this indicates the existence of a subgroup in the family with ''Picrasma'', ''Holacantha'', and ''Castela''. The best-known species is the temperate Chinese tree-of-heaven '' Ailanthus altissima'', which has become a cosmopolitan weed tree of urban areas and wildlands. Well-known genera in the family include the tropical '' Quassia'' and ''Simarouba ''Simarouba'' is a genus of trees and shrubs in the family Simaroubaceae, native to the neotropics. It has been grouped in the subtribe Simaroubina along with the '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
André Aubréville
André Aubréville (30 November 1897, in Pont-Saint-Vincent (Meurthe-et-Moselle) – 11 August 1982, in Paris) was a French botanist, professor at the National Museum of Natural History in Paris and a member of the Academy of Sciences. He was the first scientist to introduce the term "desertification" (in his 1949 book: ''Climats, forêts et désertification de l'Afrique tropicale'' (Climates, Forests, and Desertification of Tropical Africa), and wrote a number of floras of former French colonies. Biography Following his service (as a youth) in the First World War, André Aubréville entered the École Polytechnique (promotion 20 "special") and obtained an engineering degree in 1922. Attracted by the botany of tropical forests, he then studied at the École nationale des eaux et forêts in Nancy, graduating as ''Ingénieur des Eaux et Forêts des Colonies'' (Engineer of Waters and Forests of the Colonies) in 1924. Appointed to the Côte d'Ivoire in 1925, he wrote ''La Forê ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Nations Environment Programme
The United Nations Environment Programme (UNEP) is responsible for coordinating responses to environmental issues within the United Nations system. It was established by Maurice Strong, its first director, after the United Nations Conference on the Human Environment in Stockholm in June 1972. Its mandate is to provide leadership, deliver science and develop solutions on a wide range of issues, including climate change, the management of marine and terrestrial ecosystems, and green economic development. The organization also develops international environmental agreements; publishes and promotes environmental science and helps national governments achieve environmental targets. As a member of the United Nations Development Group, UNEP aims to help the world meet the 17 Sustainable Development Goals. UNEP hosts the secretariats of several multilateral environmental agreements and research bodies, including The Convention on Biological Diversity (CBD), The Minamata Convention ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy Articles Created By Polbot
Taxonomy is the practice and science of categorization or classification. A taxonomy (or taxonomical classification) is a scheme of classification, especially a hierarchical classification, in which things are organized into groups or types. Among other things, a taxonomy can be used to organize and index knowledge (stored as documents, articles, videos, etc.), such as in the form of a library classification system, or a search engine taxonomy, so that users can more easily find the information they are searching for. Many taxonomies are hierarchies (and thus, have an intrinsic tree structure), but not all are. Originally, taxonomy referred only to the categorisation of organisms or a particular categorisation of organisms. In a wider, more general sense, it may refer to a categorisation of things or concepts, as well as to the principles underlying such a categorisation. Taxonomy organizes taxonomic units known as "taxa" (singular "taxon")." Taxonomy is different from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vulnerable Flora Of Africa
Vulnerable may refer to: General *Vulnerability *Vulnerability (computing) * Vulnerable adult *Vulnerable species Music Albums * ''Vulnerable'' (Marvin Gaye album), 1997 * ''Vulnerable'' (Tricky album), 2003 * ''Vulnerable'' (The Used album), 2012 Songs * "Vulnerable" (Roxette song), 1994 * "Vulnerable" (Selena Gomez song), 2020 * "Vulnerable", a song by Secondhand Serenade from '' Awake'', 2007 * "Vulnerable", a song by Pet Shop Boys from ''Yes'', 2009 * "Vulnerable", a song by Tinashe from '' Black Water'', 2013 * "Vulnerability", a song by Operation Ivy from ''Energy'', 1989 Other uses * Climate change vulnerability, vulnerability to anthropogenic climate change In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to ... used in discussion of society's response to climate change * V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trees Of Africa
In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are usable as lumber or plants above a specified height. In wider definitions, the taller palms, tree ferns, bananas, and bamboos are also trees. Trees are not a taxonomic group but include a variety of plant species that have independently evolved a trunk and branches as a way to tower above other plants to compete for sunlight. The majority of tree species are angiosperms or hardwoods; of the rest, many are gymnosperms or softwoods. Trees tend to be long-lived, some reaching several thousand years old. Trees have been in existence for 370 million years. It is estimated that there are some three trillion mature trees in the world. A tree typically has many secondary branches supported clear of the ground by the trunk. This trunk typically con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Flora Of Ivory Coast
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. ''Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Sapindales Genera
In biology, a monotypic taxon is a taxonomic group ( taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, ''Amborella'', and in this genus there is only one species, namely ''Amborella trichopod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Percussion Instruments
A percussion instrument is a musical instrument that is sounded by being struck or scraped by a beater including attached or enclosed beaters or rattles struck, scraped or rubbed by hand or struck against another similar instrument. Excluding zoomusicological instruments and the human voice, the percussion family is believed to include the oldest musical instruments.'' The Oxford Companion to Music'', 10th edition, p.775, In spite of being a very common term to designate instruments, and to relate them to their players, the percussionists, percussion is not a systematic classificatory category of instruments, as described by the scientific field of organology. It is shown below that percussion instruments may belong to the organological classes of ideophone, membranophone, aerophone and cordophone. The percussion section of an orchestra most commonly contains instruments such as the timpani, snare drum, bass drum, tambourine, belonging to the membranophones, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hardwood
Hardwood is wood from dicot trees. These are usually found in broad-leaved temperate and tropical forests. In temperate and boreal latitudes they are mostly deciduous, but in tropics and subtropics mostly evergreen. Hardwood (which comes from angiosperm trees) contrasts with softwood (which is from gymnosperm trees). Characteristics Hardwoods are produced by angiosperm trees that reproduce by flowers, and have broad leaves. Many species are deciduous. Those of temperate regions lose their leaves every autumn as temperatures fall and are dormant in the winter, but those of tropical regions may shed their leaves in response to seasonal or sporadic periods of drought. Hardwood from deciduous species, such as oak, normally shows annual growth rings, but these may be absent in some tropical hardwoods. Hardwoods have a more complex structure than softwoods and are often much slower growing as a result. The dominant feature separating "hardwoods" from softwoods is the presen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sassandra River
The Sassandra River is a river of western Côte d'Ivoire in West Africa. It is formed by the confluence of the Tienba River, which originates in the highlands of northwestern Côte d'Ivoire, and the Gouan River (also known as the Bafing Sud River), which originates to the west in the highlands of Guinea. The Sassandra flows south-southeast to empty into the Gulf of Guinea on the Atlantic Ocean. The Buyo Dam was constructed across the middle stretch of the river in 1980, just below the confluence with the Nzo River, to create the reservoir called Lake Buyo. The Davo River joins the Sassandra just before it meets the sea. The port town of Sassandra lies on the seacoast where the river meets the sea. The Sassandra and its tributaries flow through terrestrial ecoregions. The northern, or upper, part of the watershed lies in the Guinean forest-savanna mosaic Guinea ( ),, fuf, 𞤘𞤭𞤲𞤫, italic=no, Gine, wo, Gine, nqo, ߖߌ߬ߣߍ߫, bm, Gine officially the Repu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
François Pellegrin
François Pellegrin (25 September 1881, in Paris's 6e arrondissement – 9 April 1965, in the Hôpital Bichat in the 18e arrondissement) was a French botanist, who specialised in the plants of tropical Africa. He published some 623 plant names, and has been honoured in the specific epithets of many plant species, such as, for example, ''Bikinia pellegrinii'', ''Euphorbia pellegrinii'', ''Hymenostegia pellegrinii'', '' Polyceratocarpus pellegrinii'', and ''Sericanthe pellegrinii''. He was also honoured in 1935 by botanist Hermann Otto Sleumer who published ''Pellegrinia'', a genus of flowering plants from south America, belonging to the family Ericaceae. Biography He studied under Bureau and van Tieghem, and by 1912 had presented his thesis for his doctorate and become an assistant to Professor Paul Henri Lecomte, when war broke out in 1914. In 1914 he was gravely wounded, taken prisoner by the Germans, and after several months "returned" under the requirement to live ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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