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Sassi's Greenbul
Sassi's olive greenbul (''Phyllastrephus lorenzi'') is a songbird in the bulbul family, Pycnonotidae. It is found in north-eastern and eastern Democratic Republic of the Congo and Uganda. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical moist montane forest. While it was formerly assessed as Near threatened and its population is decreasing due to habitat loss, it is now considered a species of Least concern by the IUCN. Taxonomy and systematics Formerly, some authorities considered Sassi's olive greenbul to be a subspecies of the icterine greenbul. The scientific name commemorates the Austrian zoologist Ludwig Lorenz von Liburnau Ludwig Lorenz von Liburnau (26 August 1856 in Fiume – 9 December 1943 in St. Gilgen) was an Austrian zoologist. He was the son of naturalist Josef Roman Lorenz von Liburnau (1825–1911). In 1879 he obtained his PhD from the University of Vienn .... Alternate names for Sassi's olive greenbul include ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural History Museum, Vienna
The Natural History Museum Vienna () is a large natural history museum located in Vienna, Austria. The NHM Vienna is one of the largest museums and non-university research institutions in Austria and an important center of excellence for all matters relating to natural sciences. The museum's 39 exhibition rooms cover 8,460 square meters and present more than 100,000 objects. It is home to 30 million objects available to more than 60 scientists and numerous guest researchers who carry out basic research in a wide range of topics related to human sciences, earth sciences, and List of life sciences, life sciences. The ''Index Herbariorum'' code assigned to this museum is W and it is used when citing housed herbarium specimens. History The earliest collections of the Natural History Museum Vienna date back more than 250 years. It was the Holy Roman Emperor Francis I, Holy Roman Emperor, Francis I, Maria Theresa’s husband, who in 1750 purchased what was at the time the world's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Least Concern
A least-concern species is a species that has been evaluated and categorized by the International Union for Conservation of Nature (IUCN) as not being a focus of wildlife conservation because the specific species is still plentiful in the wild. They do not qualify as threatened, near threatened, or (before 2001) conservation dependent. Species cannot be assigned the "Least Concern" category unless they have had their population status evaluated. That is, adequate information is needed to make a direct, or indirect, assessment of its risk of extinction based on its distribution or population status. Evaluation Since 2001 the category has had the abbreviation "LC", following the IUCN 2001 Categories & Criteria (version 3.1). Before 2001 "least concern" was a subcategory of the " Lower Risk" category and assigned the code "LR/lc" or lc. Around 20% of least concern taxa (3261 of 15,636) in the IUCN database still use the code "LR/lc", which indicates they have not been re- ... [...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 common ostrich. There are over 11,000 living species and they are split into 44 orders. More than half are passerine or "perching" birds. Birds have wings 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 furth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllastrephus
''Phyllastrephus'' is a songbird genus in the bulbul family (biology), family Pycnonotidae. Most of the species in the genus are Greenbul, typical greenbuls, though two are brownbuls, and one is a leaflove. Taxonomy and systematics The genus ''Phyllastrephus'' was introduced by the English naturalist William Swainson in 1832 with ''Le Jaboteur'' (François Levaillant, Levaillant), now the terrestrial brownbul, as the type species. The genus name combines the Ancient Greek ''phullon '' meaning "leaf" with ''strephō'' meaning "to toss" or "to turn". Species The genus contains the following 20 species: Former species Several species from Madagascar that were formerly placed in the genus ''Phyllastrephus'' have now been moved into ''Bernieria'' and ''Xanthomixis''. Commonly called the Bernieria and the tetrakas, these species are not bulbuls but Malagasy warblers similar to greenbuls due to convergent evolution. Formerly, some authorities also considered the following species (o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ludwig Lorenz Von Liburnau
Ludwig Lorenz von Liburnau (26 August 1856 in Fiume – 9 December 1943 in St. Gilgen) was an Austrian zoologist. He was the son of naturalist Josef Roman Lorenz von Liburnau (1825–1911). In 1879 he obtained his PhD from the University of Vienna, receiving his habilitation in zoology in 1898. From 1880 to 1922 he was associated with the '' Naturhistorisches Museum'' in Vienna. In 1899 he was the first scientist to provide analysis of '' Hadropithecus stenognathus'' (an extinct species of lemur), a study based on a mandible discovered by fossil collector Franz Sikora at Andrahomana cave in southeastern Madagascar. At the time, Lorenz believed the specimen to be the mandible of an anthropoid primate species. The North Island kaka ('' Nestor meridionalis septentrionalis''), a nationally endangered bird from New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island () ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Icterine Greenbul
The icterine greenbul (''Phyllastrephus icterinus'') is a species of songbird in the bulbul family, Pycnonotidae. It is native to the African tropical rainforest. Taxonomy and systematics The icterine greenbul was originally described in the genus '' Trichophorus'' (a synonym for ''Criniger''). The term ''icterine'' refers to its yellowish colouration. Formerly, some authorities have considered Sassi's greenbul to be a subspecies of the icterine greenbul. Alternate names for the icterine greenbul include the lesser icterine bulbul. Liberian greenbul Until 2018, a rare colour morph of the icterine greenbul from the Cavalla forest in south-eastern Liberia was believed to be a separate species. The Liberian greenbul (''Phyllastrephus leucolepis'') was known from only a few sightings between 1981 and 1984, and a specimen collected in 1984. This specimen is now considered to have been a plumage aberration. A 2017 DNA analysis revealed that the bird(s) were common icterine greenbul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated as subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific name, infraspecific ranks, such as variety (botany), variety, may be named. In bacteriology and virology, under standard International Code of Nomenclature of Prokaryotes, bacterial nomenclature and virus clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN
The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status of the natural world and the measures needed to safeguard it. It is involved in data gathering and Data analysis, analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through buildin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Loss
Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease in biodiversity and Abundance (ecology), species numbers. Habitat destruction is in fact the leading cause of biodiversity loss and species extinction worldwide. Humans contribute to habitat destruction through the Exploitation of natural resources, use of natural resources, agriculture, industrial production and urbanization (urban sprawl). Other activities include mining, logging and trawling. Environmental factors can contribute to habitat destruction more indirectly. Geological processes, climate change, introduced species, introduction of invasive species, ecosystem nutrient depletion, water pollution, water and noise pollution are some examples. Loss of habitat can be preceded by an initial habitat fragmentation. Fragmentation and lo ... [...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''. Life and work Sassi was born in Vienna to Eugen and Ida who owned the Schwindgasse palace in Vienna and Villa Sassi in northern Italy. 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 Mus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Near Threatened
A near-threatened species is a species which has been Conservation status, categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature (IUCN) as that may be vulnerable to Endangered species, endangerment in the near future, but it does not currently qualify for the threatened status. The IUCN notes the importance of reevaluating near-threatened taxon, taxa at appropriate intervals. The rationale used for near-threatened taxa usually includes the criteria of Vulnerable species, vulnerable which are plausible or nearly met, such as reduction in numbers or range. Those designated since 2001 that depend on conservation efforts to not become threatened are no longer separately considered conservation-dependent species. IUCN Categories and Criteria version 2.3 Before 2001, the IUCN used the version 2.3 Categories and Criteria to assign conservation status, which included a separate category for conservation-dependent species ("Conservation Dependen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montane Forest
Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures lapse rate, fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucial factor in shaping plant community, biodiversity, metabolic processes and ecosystem dynamics for montane ecosystems. Dense montane forests are common at moderate elevations, due to moderate temperatures and high rainfall. At higher elevations, the climate is harsher, with lower temperatures and higher winds, preventing the growth of trees and causing the plant community to transition to montane grasslands and shrublands or alpine tundra. Due to the unique climate conditions of montane ecosystems, they contain increased numbers of endemic species. Montane ecosystems also exhibit variation in ecosystem services, which include carbon storage and water supply. Life zones As elevation increases, the alpine climate, climate becomes co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
