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Araucaria Biramulata
''Araucaria biramulata'', the biramule araucaria, or piggyback araucaria, is a species of conifer in the family Araucariaceae. It is found only in New Caledonia on the main island of Grande Terre (New Caledonia), Grande Terre. ''Araucaria biramulata'' is a medium-large tree reaching 30 meters in height. As with several other endemic New Caledonian Araucaria, New Caledonian araucaria species, it is threatened by habitat loss with a fragmented wild population of less than 10,000 mature trees, and ongoing decline in remaining populations, with the main threats being forest fires and mining activities. Piggyback araucaria gets its common name from the unusual growth habit of mature trees, where they often develop a second growth tip halfway up the trunk, giving the appearance of a smaller tree "piggybacking" on the side of a larger one.James E Eckenwalder. Conifers of the World, The Complete Reference. p 156. Timber Press 2009. References Araucaria, biramulata Endemic flora ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araucaria Biramulata (2)
''Araucaria biramulata'', the biramule araucaria, or piggyback araucaria, is a species of conifer in the family Araucariaceae. It is found only in New Caledonia on the main island of Grande Terre (New Caledonia), Grande Terre. ''Araucaria biramulata'' is a medium-large tree reaching 30 meters in height. As with several other endemic New Caledonian Araucaria, New Caledonian araucaria species, it is threatened by habitat loss with a fragmented wild population of less than 10,000 mature trees, and ongoing decline in remaining populations, with the main threats being forest fires and mining activities. Piggyback araucaria gets its common name from the unusual growth habit of mature trees, where they often develop a second growth tip halfway up the trunk, giving the appearance of a smaller tree "piggybacking" on the side of a larger one.James E Eckenwalder. Conifers of the World, The Complete Reference. p 156. Timber Press 2009. References Araucaria, biramulata Endemic flora ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conifer
Conifers are a group of conifer cone, cone-bearing Spermatophyte, seed plants, a subset of gymnosperms. Scientifically, they make up the phylum, division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a single extant class (biology), class, Pinopsida. All Neontology, extant conifers are perennial plant, perennial woody plants with secondary growth. The great majority are trees, though a few are shrubs. Examples include Cedrus, cedars, Pseudotsuga, Douglas-firs, Cupressaceae, cypresses, firs, junipers, Agathis, kauri, larches, pines, Tsuga, hemlocks, Sequoioideae, redwoods, spruces, and Taxaceae, yews.Campbell, Reece, "Phylum Coniferophyta". Biology. 7th. 2005. Print. P. 595 As of 1998, the division Pinophyta was estimated to contain eight families, 68 genera, and 629 living species. Although the total number of species is relatively small, conifers are ecology, ecologically important. They are the dominant plants over large areas of land, most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araucariaceae
Araucariaceae – also known as araucarians – is an extremely ancient family of coniferous trees. The family achieved its maximum diversity during the Jurassic and Cretaceous periods and the early Cenozoic, when it was distributed almost worldwide. Most of the Araucariaceae in the Northern Hemisphere vanished in the Cretaceous–Paleogene extinction event, and they are now largely confined to the Southern Hemisphere, except for a few species of ''Agathis'' in Southeast Asia. Description Members of Araucariaceae are typically extremely tall evergreen trees, reaching heights of or more. They can also grow very large stem diameters; a New Zealand kauri tree (''Agathis australis'') named ''Tāne Mahuta'' ("The Lord of the Forest") has been measured at tall with a diameter at breast height of . Its total wood volume is calculated to be , making it the third-largest conifer after '' Sequoia'' and ''Sequoiadendron'' (both from the Cupressaceae subfamily Sequoioideae). The trunks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Caledonia
) , anthem = "" , image_map = New Caledonia on the globe (small islands magnified) (Polynesia centered).svg , map_alt = Location of New Caledonia , map_caption = Location of New Caledonia , mapsize = 290px , subdivision_type = Sovereign state , subdivision_name = , established_title = Annexed by France , established_date = 24 September 1853 , established_title2 = Overseas territory , established_date2 = 1946 , established_title3 = Nouméa Accord , established_date3 = 5 May 1998 , official_languages = French , regional_languages = , capital = Nouméa , coordinates = , largest_city = capital , demonym = New Caledonian , government_type = Devolved parliamentary dependency , leader_title1 = President of France , leader_name1 = Emmanuel Macron , leader_title2 = President of the Government , leader_name2 = Louis Mapou , leader_title3 = President of the Congress , leader_name3 = Roch Wamytan , leader_title4 = High Commissioner , leader_name4 = Patrice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grande Terre (New Caledonia)
Grande Terre is the largest and principal island of New Caledonia, which is a territory of France. History British explorer James Cook sighted Grande Terre in 1774 and named it "New Caledonia", Caledonia being the Latin name for what is now Scotland. The island's mountains reminded him of Scotland. Eventually, the name "New Caledonia" became applied to Grande Terre and its surrounding islands. It was annexed by the French Empire and became a penal colony in 1853. Today, Grande Terre has about 268,000 residents. Geography The largest settlement on Grande Terre is Nouméa, the capital city of New Caledonia. Locals refer to Grand Terre as "Le Caillou", the pebble. The island has a fairly hot and humid climate, though varying as the south-east trade winds bring relatively cool air. Surrounding the island and especially to the north-west is the New Caledonian barrier reef. The island is located roughly east of Australia. Grande Terre is oriented northwest-to-southeast; its area ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Caledonian Araucaria
The main diversity among genus ''Araucaria'' is hosted in New Caledonia, where 14 species, all endemic, are described out of a total of 20 extant species.Mill RR., Ruhsam M., Thomas PI., Gardner MF. and Hollingsworth PM. 2017. ''Araucaria goroensis'' (Araucariaceae), a new Monkey Puzzle from New Caledonia, and nomenclatural notes on ''Araucaria muelleri''. ''Edinburgh Journal of Botany'' 1–17. These New Caledonian species are mainly found as dispersed populations in open areas, where competition is less intense.Veillon JM. 1980. Architecture des espèces néo-Calédoniennes du genre ''Araucaria''. ''Candollea'' 35: 609-640. New Caledonia, considered as the smallest of the most significant biodiversity hotspots in the world, hosts a unique flora of which 75.1% is endemic. Species of ''Araucaria'' trees can be found in every habitat that New Caledonia possesses. However, almost all of them are growing on ultramafic substrate, characterized by low fertility (low N, P, K levels) an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Loss
Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby reducing biodiversity and species abundance. Habitat destruction is the leading cause of biodiversity loss. Fragmentation and loss of habitat have become one of the most important topics of research in ecology as they are major threats to the survival of endangered species. Activities such as harvesting natural resources, industrial production and urbanization are human contributions to habitat destruction. Pressure from agriculture is the principal human cause. Some others include mining, logging, trawling, and urban sprawl. Habitat destruction is currently considered the primary cause of species extinction worldwide. Environmental factors can contribute to habitat destruction more indirectly. Geological processes, climate change, introdu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araucaria
''Araucaria'' (; original pronunciation: [a.ɾawˈka. ɾja]) is a genus of evergreen Conifer, coniferous trees in the family Araucariaceae. There are 20 extant taxon, extant species in New Caledonia (where 14 species are endemism, endemic, see New Caledonian Araucaria, New Caledonian ''Araucaria''), Norfolk Island, eastern Australia, New Guinea, East Argentina, South Brazil, Chile and Paraguay. They are still common in the Pacific Ocean, South Pacific rejoin and Eastern states of Australia, Eastern Australia. Description ''Araucaria'' are mainly large trees with a massive erect stem, reaching a height of . The horizontal, spreading branches grow in whorls and are covered with leathery or needle-like leaf, leaves. In some species, the leaves are narrow, awl-shaped and lanceolate, barely overlapping each other; in others they are broad and flat, and overlap broadly. The trees are mostly dioecy, dioecious, with male and female Conifer cone, cones found on separate tree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Flora Of New Caledonia
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 s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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