|
Oberländer's Ground Thrush
Oberländer's ground thrush (''Geokichla oberlaenderi''), also known as the forest ground-thrush, is a species of bird in the thrush family, Turdidae. It is found in the Democratic Republic of the Congo and Uganda. Taxonomy This species was described as ''Geocichla gurneyi oberlaenderi'' by Sassi in 1914. It was formerly considered a race of the orange ground thrush and the Abyssinian ground thrush. It is monotypic. The species is named after Philipp von Oberländer. Distribution and habitat There have been records of the species in the Ituri Forest, the Semliki Valley and the Itombwe Mountains in the Democratic Republic of the Congo, and the Bwamba Forest and Bwindi Impenetrable Forest in Uganda, but it may have become locally extinct in some areas. In Uganda, the species is only known to still exist in Bwindi Impenetrable National Park. The size of its range is estimated at . Its habitat is riparian forests at elevations of . Description Its length is , and it we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moritz Sassi
Moriz Sassi or Moritz Sassi (13 June 1880 – 25 September 1967) was an Austrian ornithologist who worked at the Natural History Museum in Vienna. In 1933 he was made a government councilor and given the title of ''hofrat''. Sassi was born in Vienna to Eugen and Ida who owned the Schwindgasse palace in Vienna and Villa Sassi in nort. Sassi went to school at Hegelgasse and volunteered with the Dragoons. He then studied zoology at the University of Vienna under Karl Grobben and Berthold Hatschek writing a dissertation on the anatomy of ''Anomia ephippium'' for which he received a doctorate in 1903. He then followed an interest in art. In 1905 he joined an expedition into Anglo-Egyptian Sudan led by Franz Werner and collected numerous specimens of birds and mammals, and describing several as new to science including ''Procavia slatini'' (now merely a synonym for the rock hyrax) dedicated to his friend Rudolf Slatin. In 1908 he joined the Natural History Museum in Vienna under Franz Stei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bwindi Impenetrable Forest
The Bwindi Impenetrable Forest is a large primeval forest located in south-western Uganda in the Kanungu District. The Bwindi forest is on the edge of the Albertine Rift, the western branch of the East African Rift, at elevations ranging from . The forest contains around 160 species of trees and over 100 species of ferns. Origin of name The name Bwindi is derived from the Runyakitara word ''Mubwindi'' and means "a place full of darkness". This name comes from the extensive stands of bamboo interspersed amongst the larger forest hardwoods. The bamboo and thick ground cover of ferns, vines, and other plant growth severely hinder direct access on foot. Also known as the "Place of Darkness", the forest is on the edge of the western arm of the Great Rift Valley, only a few kilometers from the Democratic Republic of the Congo (DRC) border and about north of the Virunga Mountains. Wildlife The forest is one of the most biologically diverse areas on Earth. Half of the world's popul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of Central Africa
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the bee hummingbird to the ostrich. There are about ten thousand living species, more than half of which are passerine, or "perching" birds. Birds have whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. Birds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geokichla
The ''Geokichla'' thrushes are medium-sized mostly insectivorous or omnivorous birds in the thrush family, Turdidae. They were traditionally listed in the '' Zoothera'', but studies suggested their placement in another genus. The genus name ''Geokichla'' comes from Ancient Greek ''geo-'', "ground-" and ''kikhle'', " thrush". List of species * Siberian thrush, ''Geokichla sibirica'' *Pied thrush, ''Geokichla wardii'' * Grey ground thrush, ''Geokichla princei'' * Black-eared ground thrush, ''Geokichla cameronensis'' * Spotted ground thrush, ''Geokichla guttata'' - formerly ''G. fischeri'' *Spot-winged thrush, ''Geokichla spiloptera'' * Crossley's ground thrush, ''Geokichla crossleyi'' *Abyssinian ground thrush, ''Geokichla piaggiae'' ** Kivu ground thrush, ''Geokichla piaggiae tanganjicae'' * Oberländer's ground thrush, ''Geokichla oberlaenderi'' *Orange ground thrush, ''Geokichla gurneyi'' *Orange-headed thrush, ''Geokichla citrina'' * Buru thrush, ''Geokichla dumasi'' * Se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Near Threatened
A near-threatened species is a species which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature as that may be vulnerable to endangerment in the near future, but it does not currently qualify for the threatened status. The IUCN notes the importance of re-evaluating near-threatened taxon at appropriate intervals. The rationale used for near-threatened taxa usually includes the criteria of vulnerable which are plausible or nearly met, such as reduction in numbers or range. Near-threatened species evaluated from 2001 onwards may also be ones which are dependent on conservation efforts to prevent their becoming threatened, whereas before this conservation-dependent species were given a separate category ("Conservation Dependent"). Additionally, the 402 conservation-dependent taxa may also be considered near-threatened. IUCN Categories and Criteria version 2.3 Before 2001, the IUCN used the version 2.3 Categories and Criteria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to IUCN the formally stated goals of the Red List are to provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deforestation
Deforestation or forest clearance is the removal of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated deforestation occurs in tropical rainforests. About 31% of Earth's land surface is covered by forests at present. This is one-third less than the forest cover before the expansion of agriculture, a half of that loss occurring in the last century. Between 15 million to 18 million hectares of forest, an area the size of Bangladesh, are destroyed every year. On average 2,400 trees are cut down each minute. The Food and Agriculture Organization of the United Nations defines deforestation as the conversion of forest to other land uses (regardless of whether it is human-induced). "Deforestation" and "forest area net change" are not the same: the latter is the sum of all forest losses (deforestation) and all forest gains (forest expansion) in a gi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest Degradation
Forest degradation is a process in which the biological wealth of a forest area is permanently diminished by some factor or by a combination of factors. "This does not involve a reduction of the forest area, but rather a quality decrease in its condition. "The forest is still there, but with fewer trees, or less species of trees, plants or animals, or some of them affected by plagues. This degradation makes the forest less valuable and may lead to deforestation. Forest degradation is a type of the more general issue of land degradation. Deforestation and forest degradation continue to take place at alarming rates, which contributes significantly to the ongoing loss of biodiversity. Since 1990, it is estimated that some 420 million hectares of forest have been lost through conversion to other land uses, although the rate of deforestation has decreased over the past three decades. Between 2015 and 2020, the rate of deforestation was estimated at 10 million hectares per year, down f ... [...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] |
Liverworts
The Marchantiophyta () are a division of non-vascular land plants commonly referred to as hepatics or liverworts. Like mosses and hornworts, they have a gametophyte-dominant life cycle, in which cells of the plant carry only a single set of genetic information. It is estimated that there are about 9000 species of liverworts. Some of the more familiar species grow as a flattened leafless thallus, but most species are leafy with a form very much like a flattened moss. Leafy species can be distinguished from the apparently similar mosses on the basis of a number of features, including their single-celled rhizoids. Leafy liverworts also differ from most (but not all) mosses in that their leaves never have a costa (present in many mosses) and may bear marginal cilia (very rare in mosses). Other differences are not universal for all mosses and liverworts, but the occurrence of leaves arranged in three ranks, the presence of deep lobes or segmented leaves, or a lack of clearly differ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bwindi Impenetrable National Park
The Bwindi Impenetrable National Park (BINP) is in southwestern Uganda. The park is part of the Bwindi Impenetrable Forest and is situated along the Democratic Republic of the Congo (DRC) border next to the Virunga National Park and on the edge of the Albertine Rift. Composed of of both montane and lowland forest, it is accessible only on foot. BINP is a United Nations Educational, Scientific and Cultural Organization-designated World Heritage Site. Species diversity is a feature of the park. It provides habitat for 120 species of mammals, 348 species of birds, 220 species of butterflies, 27 species of frogs, chameleons, geckos, and many endangered species. Floristically, the park is among the most diverse forests in East Africa, with more than 1,000 flowering plant species, including 163 species of trees and 104 species of ferns. The northern (low elevation) sector has many species of Guineo-Congolian flora, including two endangered species, the brown mahogany and ''Brazzeia lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Locally Extinct
Local extinction, also known as extirpation, refers to a species (or other taxon) of plant or animal that ceases to exist in a chosen geographic area of study, though it still exists elsewhere. Local extinctions are contrasted with global extinctions. Local extinctions mark a change in the ecology of an area. In recent times, local extinction has sometimes been followed by a replacement of the species taken from other locations; wolf reintroduction is an example of this. The term "local extinction" is highly vernacular. The more proper biological term is ''extirpation''. Discussion Glaciation can lead to local extinction. This was the case during the Pleistocene glaciation event in North America. During this period, most of the native North American species of earthworm were killed in places covered by glaciation. This left them open for colonization by European earthworms brought over in soil from Europe. Species naturally become extirpated from islands over time. The number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Birds Of Central Africa")
