|
Mulga-eucalypt Line
The mulga-eucalypt line, or mulga-eucalypt boundary line, marks a boundary between '' Acacia''-dominated shrublands and ''Eucalyptus''-dominated open woodlands across Western Australia. It runs across the north of the Eastern Goldfields, and through the northeastern segment of Charles Darwin Reserve, from Seven Mile Well to Christmas Bore. Its course runs along the isohyet A contour line (also isoline, isopleth, or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. It is a plane section of the three-dimensional grap ... marking 250 mm (10 in) annual rainfall. Ferdinand von Mueller predicted its existence in 1883, and it was subsequently mapped by explorers and botanists Woodward, Diels, Clarke, Gardner, Burbidge and Beard. References Biogeography of Western Australia Southwest Australia {{WesternAustralia-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia
''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus name is New Latin, borrowed from the Greek (), a term used by Dioscorides for a preparation extracted from the leaves and fruit pods of ''Vachellia nilotica'', the original type of the genus. In his ''Pinax'' (1623), Gaspard Bauhin mentioned the Greek from Dioscorides as the origin of the Latin name. In the early 2000s it had become evident that the genus as it stood was not monophyletic and that several divergent lineages needed to be placed in separate genera. It turned out that one lineage comprising over 900 species mainly native to Australia, New Guinea, and Indonesia was not closely related to the much smaller group of African lineage that contained ''A. nilotica''—the type species. This meant that the Australasian lineage (by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus
''Eucalyptus'' () is a genus of over seven hundred species of flowering trees, shrubs or mallees in the myrtle family, Myrtaceae. Along with several other genera in the tribe Eucalypteae, including '' Corymbia'', they are commonly known as eucalypts. Plants in the genus ''Eucalyptus'' have bark that is either smooth, fibrous, hard or stringy, leaves with oil glands, and sepals and petals that are fused to form a "cap" or operculum over the stamens. The fruit is a woody capsule commonly referred to as a "gumnut". Most species of ''Eucalyptus'' are native to Australia, and every state and territory has representative species. About three-quarters of Australian forests are eucalypt forests. Wildfire is a feature of the Australian landscape and many eucalypt species are adapted to fire, and resprout after fire or have seeds which survive fire. A few species are native to islands north of Australia and a smaller number are only found outside the continent. Eucalypts have been grow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Australia
Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Australia is Australia's largest state, with a total land area of . It is the second-largest country subdivision in the world, surpassed only by Russia's Sakha Republic. the state has 2.76 million inhabitants percent of the national total. The vast majority (92 percent) live in the south-west corner; 79 percent of the population lives in the Perth area, leaving the remainder of the state sparsely populated. The first Europeans to visit Western Australia belonged to the Dutch Dirk Hartog expedition, who visited the Western Australian coast in 1616. The first permanent European colony of Western Australia occurred following the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Goldfields
The Eastern Goldfields is part of the Western Australian Goldfields in the Goldfields-Esperance region of Western Australia, covering the present and former gold-mining area east of Perth. Extent and name origin The region encompasses the towns of Kalgoorlie, Boulder, Coolgardie, Kambalda, Southern Cross and other smaller settlements within this area. The name is derived in two parts: ''Eastern'' in relation to its location from Perth, and ''Goldfields'' as the name suggests comes from the mining of gold in the region. Vegetation and biological survey In the 1980s, a series of surveys were reported for the broader region. The component areas were designated: * Lake Johnston - Hyden * Edjudina - Menzies * Youanmi - Leonora * Duketon - Sir Samuel * Kurnalpi - Kalgoorlie * Norseman - Balladonia * Sandston - Sir Samuel and Leonora - Laverton * Boorabbin - Southern Cross and Barlee - Menzies Transport The region was the destination of the long-running ''Westland'' overnight railw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Darwin Reserve
Charles Darwin Reserve is a nature reserve in the north east of the wheatbelt region of Western Australia. Description It is 90 km from Wubin and 355 km north of Perth. It lies largely within the Southwestern Botanical Province on the northern edge of the Wheatbelt, with northern parts of the reserve extending into the Eremean Province, and is owned and managed by Bush Heritage Australia (BHA), by which it was purchased and renamed in 2003. The purchase of the reserve was partly funded by a donation by Charles Darwin's great-great-grandson Chris Darwin. The reserve occupies an area of and was formerly part of the pastoral lease, Whitewells Station. Natural values The reserve has a semi-arid Mediterranean climate with an annual average, mainly winter, rainfall of 282 mm. It protects York gum and salmon gum woodlands as well as heath and sand-plains. The old-growth woodlands contain tree-hollows suitable for many animals. Birds recorded on the reserve inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contour Line
A contour line (also isoline, isopleth, or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. It is a plane section of the three-dimensional graph of the function f(x,y) parallel to the (x,y)-plane. More generally, a contour line for a function of two variables is a curve connecting points where the function has the same particular value. In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes. The contour interval of a contour map is the difference in elevation between successive contour lines. The gradient of the function is always perpendicular to the contour lines. When the lines are close together the magnitude of the grad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferdinand Von Mueller
Baron Sir Ferdinand Jacob Heinrich von Mueller, (german: Müller; 30 June 1825 – 10 October 1896) was a German-Australian physician, geographer, and most notably, a botanist. He was appointed government botanist for the then colony of Victoria (Australia) by Governor Charles La Trobe in 1853, and later director of the Royal Botanic Gardens, Melbourne. He also founded the National Herbarium of Victoria. He named many Australian plants. Early life Mueller was born at Rostock, in the Grand Duchy of Mecklenburg-Schwerin. After the early death of his parents, Frederick and Louisa, his grandparents gave him a good education in Tönning, Schleswig. Apprenticed to a chemist at the age of 15, he passed his pharmaceutical examinations and studied botany under Professor Ernst Ferdinand Nolte (1791–1875) at Kiel University. In 1847, he received his degree of Doctor of Philosophy from Kiel for a thesis on the plants of the southern regions of Schleswig. Mueller's sister Bertha had be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biogeography Of Western Australia
Western Australia occupies nearly one third of the Australian continent. Due to the size and the isolation of the state, considerable emphasis has been made of these features; it is the second largest administrative territory in the world, after Yakutia in Russia, despite the fact that Australia is only the sixth largest country in the world by area, and no other regional administrative jurisdiction in the world occupies such a high percentage of a continental land mass. It is also the only first level administrative subdivision to occupy the entire continental coastline in one cardinal direction. Its capital city, Perth, is also considered to be amongst the world's most isolated, being closer to Jakarta in Indonesia, than to the Australian national capital in Canberra. Introduction Western Australia's geology has components that are considered some of the oldest and most recent. The oldest minerals of the world have been discovered at the Jack Hills, and the Yilgarn Crat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
