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Whistler's Warbler
Whistler's warbler (''Phylloscopus whistleri'') is a species of leaf warbler (family Phylloscopidae). It was formerly included in the "Old World warbler" assemblage. It is found in the Indian subcontinent, from the Himalayas to Myanmar. Its natural habitats are subtropical or tropical moist montane forests and heavily degraded former forest. Whistler's warbler was previously placed in the genus ''Seicercus''. A molecular phylogenetic study published in 2018 found that neither '' Phylloscopus'' nor ''Seicercus'' were monophyletic. In the subsequent reorganization the two genera were merged into ''Phylloscopus'' which has priority under the rules of the International Commission on Zoological Nomenclature. The common name commemorates the English ornithologist Hugh Whistler Hugh Whistler (28 September 1889 – 7 July 1943), F.Z.S., M.B.O.U. was an English police officer and ornithologist who worked in India. He wrote one of the first field guides to Indian birds and documented ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khangchendzonga National Park
Khangchendzonga National Park, also Kanchenjunga Biosphere Reserve, is a national park and a biosphere reserve located in Sikkim, India. It was inscribed to the UNESCO World Heritage Sites list in July 2016, becoming the first "Mixed Heritage" site of India. It was included in the UNESCO Man and the Biosphere Programme. The park is named after the mountain Kangchenjunga (alternative spelling ''Khangchendzonga''), which is the third-highest peak in the world at tall. The total area of the park is . Human history There are a few Lepcha tribal settlements inside the park. The park contains Tholung Monastery, a gompa located in the park's buffer zone. It is considered one of the most sacred monasteries in Sikkim. Geography The Kanchenjunga Park is situated in the Mangan district and Gyalshing districts in the Indian state of Sikkim. It has an elevation of to over and has an area of . It is one of the few high-altitude National parks of India and was recently included as a mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patch Dynamics
Patch dynamics is an ecological perspective that the structure, function, and dynamics of ecological systems can be understood through studying their interactive patches. Patch dynamics, as a term, may also refer to the spatiotemporal changes within and among patches that make up a landscape. Patch dynamics is ubiquitous in terrestrial and aquatic systems across organizational levels and spatial scales. From a patch dynamics perspective, populations, communities, ecosystems, and landscapes may all be studied effectively as mosaics of patches that differ in size, shape, composition, history, and boundary characteristics. The idea of patch dynamics dates back to the 1940s when plant ecologists studied the structure and dynamics of vegetation in terms of the interactive patches that it comprises. A mathematical theory of patch dynamics was developed by Simon Levin and Robert Paine in the 1970s, originally to describe the pattern and dynamics of an intertidal community as a patc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Described In 1925
Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a four-chambered heart, and a strong yet lightweight Bird skeleton, skeleton. Birds live worldwide and range in size from the bee hummingbird to the Common ostrich, 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 Flightless bird, loss of flight in some birds, including ratites, penguins, and diverse endemism, endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of Eastern Himalaya
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] |
Birds Of The Himalayas
The ecology of the Himalayas varies with climate, rainfall, altitude, and soils. The climate ranges from tropical at the base of the mountains to permanent ice and snow at the highest elevations. The amount of yearly rainfall increases from west to east along the southern front of the range. This diversity of climate, altitude, rainfall and soil conditions supports a variety of distinct plant and animal species, such as the Nepal gray langur (''Semnopithecus schistaceus'') Lowland forests On the Indo-Gangetic plain at the base of the mountains, an alluvial plain drained by the Indus and Ganges-Brahmaputra river systems, vegetation varies from west to east with rainfall. The deserts and xeric shrublands, xeric Northwestern thorn scrub forests occupy the plains of Punjab, Pakistan, Pakistani and the Punjab, India, Indian Punjab. Further east lie the Upper Gangetic Plains moist deciduous forests of Uttarakhand and Uttar Pradesh and the Lower Gangetic Plains moist deciduous forests of Bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hugh Whistler
Hugh Whistler (28 September 1889 – 7 July 1943), F.Z.S., M.B.O.U. was an English police officer and ornithologist who worked in India. He wrote one of the first field guides to Indian birds and documented the distributions of birds in notes in several journals apart from describing new subspecies. Life and career Hugh was the first son of Major Fuller Whistler of the Highland Light Infantry and Gwenllian Annie (née Robinson) and was born at Mablethorpe in 1889. Whistler was educated at Aldenham School. His younger brother Ralfe Allen Fuller Whistler (24 July 1895 - 28 April 1917) followed after his father and joined the Highland Light Infantry while Hugh went to serve with the Indian police mainly in the Punjab. He served in India from December 1909 to April 1926. He was initially posted at Phillaur but was later to serve across Punjab including districts such as Jhang that were considered unpopular. He was posted in other regions including Kangra, Lahul and Spiti. He began to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Commission On Zoological Nomenclature
The International Commission on Zoological Nomenclature (ICZN) is an organization dedicated to "achieving stability and sense in the scientific naming of animals". Founded in 1895, it currently comprises 26 commissioners from 20 countries. Organization The ICZN is governed by the "Constitution of the ICZN", which is usually published together with the ICZN Code. Members are elected by the Section of Zoological Nomenclature, established by the International Union of Biological Sciences (IUBS). The regular term of service of a member of the Commission is six years. Members can be re-elected up to a total of three full six-year terms in a row. After 18 continuous years of elected service, a break of at least three years is prescribed before the member can stand again for election. Activities Since 2014, the work of the Commission is supported by a small secretariat based at the National University of Singapore, in Singapore. Previously, the secretariat was based in London and fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monophyletic
In cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic groups are typically characterised by shared derived characteristics ( synapomorphies), which distinguish organisms in the clade from other organisms. An equivalent term is holophyly. The word "mono-phyly" means "one-tribe" in Greek. Monophyly is contrasted with paraphyly and polyphyly as shown in the second diagram. A ''paraphyletic group'' consists of all of the descendants of a common ancestor minus one or more monophyletic groups. A '' polyphyletic group'' is characterized by convergent features or habits of scientific interest (for example, night-active primates, fruit trees, aquatic insects). The features by which a polyphyletic group is differentiated from others are not inherited from a common ancestor. These definitions have tak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Phylogenetic
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to determine the processes by which diversity among species has been achieved. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree. Molecular phylogenetics is one aspect of molecular systematics, a broader term that also includes the use of molecular data in taxonomy and biogeography. Molecular phylogenetics and molecular evolution correlate. Molecular evolution is the process of selective changes (mutations) at a molecular level (genes, proteins, etc.) throughout various branches in the tree of life (evolution). Molecular phylogenetics makes inferences of the evolutionary relationships that arise due to molecular evolution and results in the construction of a phylogenetic tree. History The theoretical framew ... [...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 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, 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 climate becomes cooler, due to a decrease in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Sikkim
Gyalshing District or Geyzing District is a list of Indian districts, district of the Indian state of Sikkim. Its headquarter is Geyzing, also known as Gyalshing. The district is a favourite with trekkers due to the high elevations. Other important towns include Pelling and Yuksom. Local people also call it as ''Pallo-Sikkim'' and ''Sano-Sikkim'' commonly. History West Sikkim is the site of the ancient state capital Yuksom. West Sikkim It served as Sikkim's capital beginning in 1642 for almost 50 years until it was shifted to Rabdentse. The district was under the occupation of the Nepalese for 30 years in the eighteenth and nineteenth centuries. After Anglo-Nepalese War (1814–16), the district was returned to Sikkim. Geography West Sikkim covers an area of . Attractions include the Khecheopalri Lake, where, according to legend, not a leaf is allowed to fall on the surface of the lake and the Dubdi Monastery, the first monastery of the state. Assembly constituencies The distr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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