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Sclerophrys Poweri
''Sclerophrys poweri'' is a species of toad in the family Bufonidae. It is found in extreme southern Angola, northern Namibia, Botswana, southward to central South Africa, and Zambia. The specific name ''poweri'' honours John Hyacinth Power, Irish-born director of the McGregor Museum (Kimberley, South Africa) who collected amphibians as well as reptiles and plants. ''Sclerophrys poweri'' inhabits open savanna, wooded savanna, thornveldt, river valleys, and agricultural areas. Breeding takes place in temporary water (vlei A vlei () is a shallow minor lake, mostly of a seasonal or intermittent nature. It even might refer to seasonal ponds or marshy patches where frogs and similar marsh dwellers breed. Commonly, vleis vary in their extent, or even in the presence ...s, marshes, dams, or pans), and sometimes artificial pools. It is a common and often abundant species that is not facing any significant threats and that is present in many protected areas. References poweri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Hewitt (herpetologist)
John Hewitt (23 December 1880 – 4 August 1961) was a South African zoologist and archaeologist of British origin. He was born in Dronfield, Derbyshire, England, and died in Grahamstown, South Africa. He was the author of several herpetological papers which described new species. He also described new species of spiders and other arachnids. Biography He graduated with a first-class in natural sciences from Jesus College, Cambridge in 1903. From 1905 to 1908 he was Curator of the Sarawak Museum in Kuching, Sarawak. In 1909 he went to South Africa to work as an assistant curator at the Transvaal Museum in Pretoria. In 1910 he was appointed Director of the Albany Museum in Grahamstown, eventually retiring in 1958.Deacon HJ, Deacon J (1999)''Human Beginnings in South Africa: Uncovering the Secrets of the Stone Age.''Walnut Creek, California: AltaMira Press. viii + 215 pp. His daughter, Florence Ellen Hewitt (1910–1979), was a teacher and phycologist. He was a founder mem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vlei
A vlei () is a shallow minor lake, mostly of a seasonal or intermittent nature. It even might refer to seasonal ponds or marshy patches where frogs and similar marsh dwellers breed. Commonly, vleis vary in their extent, or even in the presence or absence of water, according to the fall of rain or dryness of the season."Compendium of South African history and geography", by George McCall Theal, Edition: 3 - 18779/ref> In terms of water salinity, vleis may be freshwater, saltwater, or brackish. Over time a vlei may degrade into a salt pan or clay pan, such as Dead Vlei or Sossusvlei. Ecoregions Ecology Vleis of various types can be of considerable local ecological importance, harboring many endemic and migratory species. Most vleis are too minor to be granted recognition in the form of a name. However, some major vleis are accorded names, for example Rondevlei and Zeekoevlei in the Cape Peninsula, which are permanent bodies of water. Indeed, Rondevlei is home to hippopot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By John Hewitt (herpetologist)
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of Zambia
Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of South Africa
Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic decline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of Namibia
Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of Botswana
Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic decline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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