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Alexander's Bush Squirrel
Alexander's bush squirrel (''Paraxerus alexandri'') is a species of squirrel native to the Democratic Republic of the Congo and Uganda. It is arboreal and lives in tropical moist forests, especially undisturbed mature forests. It is a common species with a wide range, and the International Union for Conservation of Nature has rated it as being of "least concern". Its common name and Latin binomial commemorate Lieutenant Boyd Alexander, a British Army officer, explorer and ornithologist. Description This is a very small squirrel with a head-and-body length of about and a tail about in length, with a weight of . The fur is a grizzled mixture of yellow, grey and black, with a few black guard hairs, giving an overall impression of a greenish-brown colour. There is a broad band of tawny orange running from the head to the rump, bordered on either side by a thin black band and a narrow creamy-white band. The underparts are a paler greenish-brown colour, sometimes with yellowish blot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oldfield Thomas
Michael Rogers Oldfield Thomas (21 February 1858 – 16 June 1929) was a British zoologist. Career Thomas worked at the Natural History Museum on mammals, describing about 2,000 new species and subspecies for the first time. He was appointed to the museum secretary's office in 1876, transferring to the zoological department in 1878. In 1891, Thomas married Mary Kane, daughter of Sir Andrew Clark, heiress to a small fortune, which gave him the finances to hire mammal collectors and present their specimens to the museum. He also did field work himself in Western Europe and South America. His wife shared his interest in natural history, and accompanied him on collecting trips. In 1896, when William Henry Flower took control of the department, he hired Richard Lydekker Richard Lydekker (; 25 July 1849 – 16 April 1915) was an English naturalist, geologist and writer of numerous books on natural history. Biography Richard Lydekker was born at Tavistock Square in London. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mbomou River
The Mbomou River or Bomu (also spelled M'bomou in French) forms part of the boundary between the Central African Republic (CAR) and the Democratic Republic of the Congo (DRC). The Mbomou merges with the Uele River to form the Ubangi River. The Ubangi, a tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ... of the Congo, also serves as part of the border between the CAR and the DRC. Gallery File:Forward, forward.jpg, Man on the Mbomou river, between Bangassou and Ndu References Further reading * * External links * Rivers of the Central African Republic Rivers of the Democratic Republic of the Congo Central African Republic–Democratic Republic of the Congo border International rivers of Africa Border rivers Tributaries of the Ubangi River {{DRCongo-r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Oldfield Thomas
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 int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Described In 1907
Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles (including birds) from which they diverged in the Carboniferous, over 300 million years ago. Around 6,400 extant species of mammals have been described divided into 29 orders. The largest orders, in terms of number of species, are the rodents, bats, and Eulipotyphla (hedgehogs, moles, shrews, and others). The next three are the Primates (including humans, apes, monkeys, and others), the Artiodactyla ( cetaceans and even-toed ungulates), and the Carnivora (cats, dogs, seals, and others). In terms of cladistics, which reflects evolutionary history, mammals are the only living members of the Synapsida (synapsids); this clade, together with Saur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Of Uganda
Mammals () are a group of vertebrate animals constituting the class (biology), class Mammalia (), characterized by the presence of mammary glands which in Female#Mammalian female, females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three ossicles, middle ear bones. These characteristics distinguish them from reptiles (including birds) from which they Genetic divergence, diverged in the Carboniferous, over 300 million years ago. Around 6,400 extant taxon, extant species of mammals have been described divided into 29 Order (biology), orders. The largest Order (biology), orders, in terms of number of species, are the rodents, bats, and Eulipotyphla (hedgehogs, Mole (animal), moles, shrews, and others). The next three are the Primates (including humans, apes, monkeys, and others), the Artiodactyla (cetaceans and even-toed ungulates), and the Carnivora (cats, dogs, pinniped, seals, and others). In terms of cladistic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Of The Democratic Republic Of The Congo
Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles (including birds) from which they diverged in the Carboniferous, over 300 million years ago. Around 6,400 extant species of mammals have been described divided into 29 orders. The largest orders, in terms of number of species, are the rodents, bats, and Eulipotyphla (hedgehogs, moles, shrews, and others). The next three are the Primates (including humans, apes, monkeys, and others), the Artiodactyla ( cetaceans and even-toed ungulates), and the Carnivora (cats, dogs, seals, and others). In terms of cladistics, which reflects evolutionary history, mammals are the only living members of the Synapsida (synapsids); this clade, together wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodents Of Africa
Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are native to all major land masses except for New Zealand, Antarctica, and several oceanic islands, though they have subsequently been introduced to most of these land masses by human activity. Rodents are extremely diverse in their ecology and lifestyles and can be found in almost every terrestrial habitat, including human-made environments. Species can be arboreal, fossorial (burrowing), saltatorial/richochetal (leaping on their hind legs), or semiaquatic. However, all rodents share several morphological features, including having only a single upper and lower pair of ever-growing incisors. Well-known rodents include mice, rats, squirrels, prairie dogs, porcupines, beavers, guinea pigs, and hamsters. Rabbits, hares, and pikas, whose incisors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Destruction
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] |
Lukuga River
The Lukuga River is a tributary of the Lualaba River in the Democratic Republic of the Congo (DRC) that drains Lake Tanganyika. It is unusual in that its flow varies not just seasonally but also due to longer term climate fluctuations. Location The Lukuga runs along the northern edge of the Katanga Plateau. The river leaves Lake Tanganyika at Kalemie and flows through a gap in the highlands westward through the Tanganyika District to join the Lualaba between Kabalo and Kongolo. Typically the river accounts for 18% of water loss from the lake, with the rest being due to evaporation. The Lukuga is heavily mineralized. The proportions of ionic contents where the Lukuga River leaves the lake, with magnesium and potassium more prevalent than calcium and sodium, are caused by the Albertine Rift's hydrothermal inputs, as seen also at the outlets of Lake Kivu and Lake Edward. It seems likely that the present hydrological system was established quite recently when the still-active Viru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lualaba River
The Lualaba River flows entirely within the eastern Democratic Republic of the Congo. It provides the greatest streamflow to the Congo River, while the source of the Congo is recognized as the Chambeshi. The Lualaba is long. Its headwaters are in the country's far southeastern corner near Musofi and Lubumbashi in Katanga Province, next to the Zambian Copperbelt. Course The source of the Lualaba River is on the Katanga plateau, at an elevation of above sea level. The river flows northward to end near Kisangani, where the name Congo River officially begins. From the Katanga plateau it drops, with waterfalls and rapids marking the descent, to the Manika plateau. As it descends through the upper Upemba Depression (Kamalondo Trough), in . Near Nzilo Falls it is dammed for hydroelectric power at the Nzilo Dam. At Bukama in Haut-Lomami District the river becomes navigable for about through a series of marshy lakes in the lower Upemba Depression, including Lake Upemba and Lake Kisale ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Charles Wroughton
Robert Charles Wroughton (15 August 1849, in Naseerabad – 15 May 1921) was an officer in the Indian Forest Service from 10 December 1871 to 1904. He was a member of the Bombay Natural History Society (BNHS) and was interested in Hymenoptera, particularly ants and then later took an interest in scorpions due to his interaction with Reginald Innes Pocock. His major work was on the mammals of India and after his retirement in 1904, became a regular worker at the Natural History Museum in London. He initially took an interest in African mammals and there was little material from India. He persuaded his friends in India to collect specimens and this led to a collaborative mammal survey in 1911. Interest in small mammals was also raised by work on plague particularly due to the work of Captain Glen Liston who delivered a special address to the members of the BNHS. Collectors for the small mammal survey included C. A. Crump (Khandesh, Darjeeling), Sir Ernest Hotson (Baluchistan), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
