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Anjanamba Cave
Anjanamba is the name of a cave in South-Western Madagascar, Atsimo-Andrefana region, in the Mikea Forest. It is a fully submerged cave system that has been explored to more than 10km (in 2019) using cave diving techniques. It is the longest underwater cave of Africa. The cave was first described by Jean-Noël Salomon in 1987 in his PHD Thesis, as a vertical shaft giving access to the water table. He reports the name Ampanonga. In 2016, Ryan Dart (Madagascar Cave Diving Association) and Phillip Lehman (Dominican Republic Speleological Society) rediscovered the entrance and started the underwater explorations. Gathering a team of cave divers, 4 expeditions have been conducted in the cave and more than 10km of flooded passages have been explored and mapped. Three short films have been produced on the explorations, titled Spirits of the Cave. The cave hosts cavefish of the genus Typhleotris ''Typhleotris'' is a genus of cavefish that are endemic to caves in southwestern Madagasc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cave
A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called ''exogene'' caves. Caves which extend further underground than the opening is wide are called ''endogene'' caves. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called ''caving'', ''potholing'', or ''spelunking''. Formation types The formation and development of caves is known as ''speleogenesis''; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorgani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madagascar
Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa across the Mozambique Channel. At Madagascar is the world's List of island countries, second-largest island country, after Indonesia. The nation is home to around 30 million inhabitants and consists of the island of Geography of Madagascar, Madagascar (the List of islands by area, fourth-largest island in the world), along with numerous smaller peripheral islands. Following the prehistoric breakup of the supercontinent Gondwana, Madagascar split from the Indian subcontinent around 90 million years ago, allowing native plants and animals to evolve in relative isolation. Consequently, Madagascar is a biodiversity hotspot; over 90% of wildlife of Madagascar, its wildlife is endemic. Human settlement of Madagascar occurred during or befo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atsimo-Andrefana
Atsimo-Andrefana is a region of Madagascar. It borders Menabe in north, Amoron'i Mania and Haute Matsiatra in northeast, Ihorombe and Anosy in east and Androy in southeast. The capital is Toliara and the population was 1,799,088 in 2018. Atsimo Andrefana is geographically the largest of all Malagasy regions with an area of . Administrative divisions Atsimo-Andrefana Region is divided into nine districts, which are sub-divided into 105 communes. * Ampanihy District - 16 communes * Ankazoabo District - 5 communes * Benenitra District - 5 communes * Betioky Sud District - 5 communes * Beroroha District - 19 communes * Morombe District - 8 communes * Sakaraha District - 11 communes * Toliary I District - 1 commune * Toliara II District - 19 communes Transport Airports *Ampanihy Airport *Andavadoaka Airport *Ankazoabo Airport *Beroroha Airport *Betioky Airport *Morombe Airport * Tanandava Airport *Toliara Airport Protected areas In Atsimo-Andrefana are found the following protecte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mikea Forest
The Mikea Forest (or Forêt des Mikea) is a forested region of southwestern Madagascar, between Manombo and Morombe. More specifically, it stretches from Route Nationale 9 to the west coast and from Mangoky south to the Manombo River. It lies at the transition between dry deciduous forest, which is more common further north in Madagascar, and spiny forest, which is dominant in southwestern Madagascar. Its underlying geology is unconsolidated sand, and the region contains several freshwater lakes. The Forêt des Mikea is one of the largest remaining continuous forest blocks in western and southern Madagascar, but it is not protected and it is threatened by human development. This transitional terrain is one of the least protected of Madagascar's habitats. This soil composition has resulted in a collection of plant and animal species, even distinct from adjacent vegetation on limestone. Small terrestrial mammals found here include the rodents '' Macrotarsomys bastardi'', ''Macro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cave Diving
Cave-diving is underwater diving in water-filled caves. It may be done as an extreme sport, a way of exploring flooded caves for scientific investigation, or for the search for and recovery of divers or, as in the 2018 Thai cave rescue, other cave users. The equipment used varies depending on the circumstances, and ranges from breath hold to surface supplied, but almost all cave-diving is done using scuba equipment, often in specialised configurations with redundancies such as sidemount or backmounted twinset. Recreational cave-diving is generally considered to be a type of technical diving due to the lack of a free surface during large parts of the dive, and often involves planned decompression stops. A distinction is made by recreational diver training agencies between cave-diving and cavern-diving, where cavern diving is deemed to be diving in those parts of a cave where the exit to open water can be seen by natural light. An arbitrary distance limit to the open water s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Table
The water table is the upper surface of the zone of saturation. The zone of saturation is where the pores and fractures of the ground are saturated with water. It can also be simply explained as the depth below which the ground is saturated. The water table is the surface where the water pressure head is equal to the atmospheric pressure (where gauge pressure = 0). It may be visualized as the "surface" of the subsurface materials that are saturated with groundwater in a given vicinity. The groundwater may be from precipitation or from groundwater flowing into the aquifer. In areas with sufficient precipitation, water infiltrates through pore spaces in the soil, passing through the unsaturated zone. At increasing depths, water fills in more of the pore spaces in the soils, until a zone of saturation is reached. Below the water table, in the phreatic zone (zone of saturation), layers of permeable rock that yield groundwater are called aquifers. In less permeable soils, such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phillip Lehman
Phillip Lehman (born Philip, alternatively spelled Philippe) is a Franco-American artist, music producer, and cave diver best known as Bando, the graffiti pioneer of France who helped popularize the medium in Europe throughout the 1980s. Following this period, Lehman co-founded a string of funk labels in Paris and New York including Desco Records, the precursor to Daptone Records and his Truth & Soul Records. Since the 2000s, he has worked as a cave diver and speleologist in the Dominican Republic. Biography Born in 1965 to artistic parents, Aki and Robin Lehman, Lehman was raised between New York City and Paris. As a teenager, Lehman took part in New York graffiti culture under the name Bando, later bringing its ethos over to Europe. He is credited as bringing graffiti, particularly tagging, to France in the early 1980s and as a pioneer throughout Europe; an early and prolific participant in Europe's nascent graffiti culture, his style had particular influence into the 1990 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cavefish
Cavefish or cave fish is a generic term for fresh and brackish water fish adapted to life in caves and other underground habitats. Related terms are subterranean fish, troglomorphic fish, troglobitic fish, stygobitic fish, phreatic fish and hypogean fish.Romero, Aldemaro, editor (2001). ''The Biology of Hypogean Fishes.'' Developments in Environmental Biology of Fishes. Helfman, G.S. (2007). ''Fish Conservation: A Guide to Understanding and Restoring Global Aquatic Biodiversity and Fishery Resources'', pp. 41–42. Island Press. There are more than 200 scientifically described species of obligate cavefish found on all continents, except Antarctica. Although widespread as a group, many cavefish species have very small ranges and are seriously threatened.Fenolio, D.B.; Zhao, Y.; Niemiller, M.L.; and Stout, J. (2013). ''In-situ observations of seven enigmatic cave loaches and one cave barbel from Guangxi, China, with notes on conservation status.'' Speleobiology Notes 5: 19-33.Proud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Typhleotris
''Typhleotris'' is a genus of cavefish that are endemic to caves in southwestern Madagascar. Although traditionally considered to belong to the family Eleotridae, studies show that they represent a distinct and far-separated lineage together with the ''Milyeringa ''Milyeringa'' is a genus of blind cavefish from the Cape Range and Barrow Island, northwestern Australia. Although traditionally considered to belong to the family Eleotridae, studies show that they represent a distinct and far-separated linea ...'' cavefish from Australia, leading some to move them to their own family, Milyeringidae. Species The recognized species in this genus are: * '' Typhleotris madagascariensis'' Petit, 1933 * '' Typhleotris mararybe'' Sparks and Chakrabarty, 2012 * '' Typhleotris pauliani'' Arnoult, 1959 See also * '' Glossogobius ankaranensis'', another cave fish species from Madagascar References Milyeringidae Taxonomy articles created by Polbot {{Gobiiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caves Of Madagascar
A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called ''exogene'' caves. Caves which extend further underground than the opening is wide are called ''endogene'' caves. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called ''caving'', ''potholing'', or ''spelunking''. Formation types The formation and development of caves is known as ''speleogenesis''; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorganisms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
