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MacQueen's Bustard
The Asian houbara (''Chlamydotis macqueenii''), also known as MacQueen's bustard, is a large bird in the bustard family. It is native to the desert and steppe regions of Asia, west from the Sinai Peninsula extending across Iran and further north toward Kazakhstan and Mongolia. In the 19th century, Vagrancy (biology), vagrants were found as far west of their range as Great Britain. Populations have decreased by 20 to 50% between 1984 and 2004 mainly due to hunting and changes in land-use. The Asian houbara is a partial latitudinal Animal migration, migrant while the African houbara (''C. undulata'') is more sedentary. Both species are the only members of the genus ''Chlamydotis''. The Asian houbara used to be regarded as a subspecies of the African houbara. Taxonomy ''Otis macqueenii'' was proposed by John Edward Gray in 1834 for a bustard from India drawn by Thomas Hardwicke. It was long regarded a subspecies of the African houbara ''Chlamydotis undulata''. It was classified as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Edward Gray
John Edward Gray (12 February 1800 – 7 March 1875) was a British zoologist. He was the elder brother of zoologist George Robert Gray and son of the pharmacologist and botanist Samuel Frederick Gray (1766–1828). The same is used for a zoological name. Gray was keeper of zoology at the British Museum in London from 1840 until Christmas 1874, before the natural history holdings were split off to the Natural History Museum. He published several catalogues of the museum collections that included comprehensive discussions of animal groups and descriptions of new species. He improved the zoological collections to make them amongst the best in the world. Biography Gray was born in Walsall, but his family soon moved to London, where Gray studied medicine. He assisted his father in writing ''The Natural Arrangement of British Plants'' (1821). After being blackballed by the Linnean Society of London, Gray shifted his interest from botany to zoology. He began his zoological ... [...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] |
Suffolk
Suffolk ( ) is a ceremonial county in the East of England and East Anglia. It is bordered by Norfolk to the north, the North Sea to the east, Essex to the south, and Cambridgeshire to the west. Ipswich is the largest settlement and the county town. The county has an area of and a population of 758,556. After Ipswich (144,957) in the south, the largest towns are Lowestoft (73,800) in the north-east and Bury St Edmunds (40,664) in the west. Suffolk contains five Non-metropolitan district, local government districts, which are part of a two-tier non-metropolitan county administered by Suffolk County Council. The Suffolk coastline, which includes parts of the Suffolk & Essex Coast & Heaths National Landscape, is a complex habitat, formed by London Clay and Crag Group, crag underlain by chalk and therefore susceptible to erosion. It contains several deep Estuary, estuaries, including those of the rivers River Blyth, Suffolk, Blyth, River Deben, Deben, River Orwell, Orwell, River S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aberdeenshire
Aberdeenshire (; ) is one of the 32 Subdivisions of Scotland#council areas of Scotland, council areas of Scotland. It takes its name from the Shires of Scotland, historic county of Aberdeenshire (historic), Aberdeenshire, which had substantially different boundaries. The Aberdeenshire Council area includes all of the areas of the historic counties of Aberdeenshire and Kincardineshire except the area making up Aberdeen City Council area, as well as part of Banffshire. The historic county boundaries are still officially used for a few purposes, namely land registration and Lieutenancy areas of Scotland, lieutenancy. Aberdeenshire Council is headquartered at Woodhill House in Aberdeen, making it the only Scottish council whose headquarters are located outside its jurisdiction. Aberdeen itself forms a different council area (Aberdeen City). Aberdeenshire borders onto Angus, Scotland, Angus and Perth and Kinross to the south, Highland (council area), Highland and Moray to the west a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yorkshire
Yorkshire ( ) is an area of Northern England which was History of Yorkshire, historically a county. Despite no longer being used for administration, Yorkshire retains a strong regional identity. The county was named after its county town, the city of York. The south-west of Yorkshire is densely populated, and includes the cities of Leeds, Sheffield, Bradford, Doncaster and Wakefield. The north and east of the county are more sparsely populated, however the north-east includes the southern part of the Teesside conurbation, and the port city of Kingston upon Hull is located in the south-east. York is located near the centre of the county. Yorkshire has a Yorkshire Coast, coastline to the North Sea to the east. The North York Moors occupy the north-east of the county, and the centre contains the Vale of Mowbray in the north and the Vale of York in the south. The west contains part of the Pennines, which form the Yorkshire Dales in the north-west. The county was historically borde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lincolnshire
Lincolnshire (), abbreviated ''Lincs'', is a Ceremonial counties of England, ceremonial county in the East Midlands and Yorkshire and the Humber regions of England. It is bordered by the East Riding of Yorkshire across the Humber estuary to the north, the North Sea to the east, Norfolk, Cambridgeshire, Northamptonshire and Rutland to the south, and Leicestershire, Nottinghamshire and South Yorkshire to the west. The county is predominantly rural, with an area of and a population of 1,095,010. After Lincoln (104,565), the largest towns are Grimsby (85,911) and Scunthorpe (81,286). For Local government in England, local government purposes Lincolnshire comprises a non-metropolitan county with seven districts, and the unitary authority areas of North Lincolnshire and North East Lincolnshire. The last two areas are part of the Yorkshire and the Humber region, and the rest of the county is in the East Midlands. The non-metropolitan county council and two unitary councils collabora ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kanhangad
Kanhangad () is a commercial city, located in the Kasaragod District, state of Kerala, India. Location The area contains villages around Kanhangad town with Kasaragod as the northern border, Nileshwar, popularly known as the 'cultural town' of Kasaragod district with its rich rivers and lakes; as the southern boundary. The eastern part of Kanhangad is categorized as Panathur area with the difference in terrain mainly because of the hilly terrain and hill stations and to the West lies the Arabian Sea. The importance of Kanhangad is that it lies in the exact centre between the two major cities Mangalore and Kannur, equidistant from their respective district headquarters. Geography Kanhangad lies at 12°18′0″N 75°5.4′0″E in the geographic map of Kasaragod. It is a coastal town which has a varied topography with plain areas in the centre of the city. The landscape is dominated by the characteristic coconut palms accompanying rolling hills and streams flowing into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gobi Desert
The Gobi Desert (, , ; ) is a large, cold desert and grassland region in North China and southern Mongolia. It is the sixth-largest desert in the world. The name of the desert comes from the Mongolian word ''gobi'', used to refer to all of the waterless regions in the Mongolian Plateau; in Chinese, ''gobi'' is used to refer to rocky, semi-deserts such as the Gobi itself rather than sandy deserts. Geography The Gobi measures from southwest to northeast and from north to south. The desert is widest in the west, along the line joining the Lake Bosten and the Lop Nor (87°–89° east). Its area is approximately . Gobi includes the long stretch of desert extending from the foot of the Pamirs (77° east) to the Greater Khingan Mountains, 116–118° east, on the border of Manchuria; and from the foothills of the Altay, Sayan, and Yablonoi mountain ranges on the north to the Kunlun, Altyn-Tagh, and Qilian mountain ranges, which form the northern edges of the Tibetan Pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caspian Sea
The Caspian Sea is the world's largest inland body of water, described as the List of lakes by area, world's largest lake and usually referred to as a full-fledged sea. An endorheic basin, it lies between Europe and Asia: east of the Caucasus, west of the broad steppe of Central Asia, south of the fertile plains of Southern Russia in Eastern Europe, and north of the mountainous Iranian Plateau. It covers a surface area of (excluding the highly saline lagoon of Garabogazköl to its east), an area approximately equal to that of Japan, with a volume of . It has a salinity of approximately 1.2% (12 g/L), about a third of the salinity of average seawater. It is bounded by Kazakhstan to the northeast, Russia to the northwest, Azerbaijan to the southwest, Iran to the south, and Turkmenistan to the southeast. The name of the Caspian Sea is derived from the ancient Iranian peoples, Iranic Caspians, Caspi people. The sea stretches from north to south, with an average width of . Its gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linear Discriminant Analysis
Linear discriminant analysis (LDA), normal discriminant analysis (NDA), canonical variates analysis (CVA), or discriminant function analysis is a generalization of Fisher's linear discriminant, a method used in statistics and other fields, to find a linear combination of features that characterizes or separates two or more classes of objects or events. The resulting combination may be used as a linear classifier, or, more commonly, for dimensionality reduction before later statistical classification, classification. LDA is closely related to analysis of variance (ANOVA) and regression analysis, which also attempt to express one dependent variable as a linear combination of other features or measurements. However, ANOVA uses categorical variable, categorical independent variables and a continuous variable, continuous dependent variable, whereas discriminant analysis has continuous independent variables and a categorical dependent variable (''i.e.'' the class label). Logistic regr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pakistan
Pakistan, officially the Islamic Republic of Pakistan, is a country in South Asia. It is the List of countries and dependencies by population, fifth-most populous country, with a population of over 241.5 million, having the Islam by country#Countries, second-largest Muslim population as of 2023. Islamabad is the nation's capital, while Karachi is List of cities in Pakistan by population, its largest city and financial centre. Pakistan is the List of countries and dependencies by area, 33rd-largest country by area. Bounded by the Arabian Sea on the south, the Gulf of Oman on the southwest, and the Sir Creek on the southeast, it shares land borders with India to the east; Afghanistan to the west; Iran to the southwest; and China to the northeast. It shares a maritime border with Oman in the Gulf of Oman, and is separated from Tajikistan in the northwest by Afghanistan's narrow Wakhan Corridor. Pakistan is the site of History of Pakistan, several ancient cultures, including the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitochondrial DNA
Mitochondrial DNA (mtDNA and mDNA) is the DNA located in the mitochondrion, mitochondria organelles in a eukaryotic cell that converts chemical energy from food into adenosine triphosphate (ATP). Mitochondrial DNA is a small portion of the DNA contained in a eukaryotic cell; most of the DNA is in the cell nucleus, and, in plants and algae, the DNA also is found in plastids, such as chloroplasts. Mitochondrial DNA is responsible for coding of 13 essential subunits of the complex oxidative phosphorylation (OXPHOS) system which has a role in cellular energy conversion. Human mitochondrial DNA was the first significant part of the human genome to be sequenced. This sequencing revealed that human mtDNA has 16,569 base pairs and encodes 13 proteins. As in other vertebrates, the human mitochondrial genetic code differs slightly from nuclear DNA. Since animal mtDNA evolves faster than nuclear genetic markers, it represents a mainstay of phylogenetics and evolutionary biology. It als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
