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Acacia Merrallii
''Acacia merrallii'', commonly known as Merrall's wattle, is a shrub belonging to the genus ''Acacia'' and the subgenus ''Phyllodineae'' that is endemic to south western and southern Australia. Description The shrub typically grows to a height of with a width and can have a dense, rounded or spreading habit. The branchlets are often covered in minutely fine, straight or barely curved hairs. Like most species of ''Acacia'' it has phyllodes rather than true leaves. The thick, smooth, grey-green phyllodes have an obliquely obovate to oblong-elliptic shape and is occasionally ovate. The phyllodes have a length of and a width of and are mostly slightly undulate with an obscure midrib and prominent margins. It blooms from August to October and produces yellow flowers. The rudimentary inflorescences are found on one to three headed racemes with a length of up to . The spherical flower-heads have a diameter of and contain 22 to 35 golden coloured flowers. The bow shaped to irregularl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australasian Virtual Herbarium
The ''Australasian Virtual Herbarium'' (AVH) is an online resource that allows access to plant specimen data held by various Australian and New Zealand herbaria. It is part of the Atlas of Living Australia (ALA), and was formed by the amalgamation of ''Australia's Virtual Herbarium'' and ''NZ Virtual Herbarium''. As of 12 August 2014, more than five million specimens of the 8 million and upwards specimens available from participating institutions have been databased. Uses This resource is used by academics, students, and anyone interested in research in botany in Australia or New Zealand, since each record tells all that is known about the specimen: where and when it was collected; by whom; its current identification together with the botanist who identified it; and information on habitat and associated species. ALA post processes the original herbarium data, giving further fields with respect to taxonomy and quality of the data. When interrogating individual specimen record ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pingrup, Western Australia
Pingrup is a small town in the Great Southern region of Western Australia. The name of the town is Indigenous Australian in origin and was the name of a lake that is close to the townsite. The meaning of Pingrup is most likely taken from A.A. Hassell of Jerramungup (1894) recording of Pingrup (bingerup) meaning place where digging. The Noongar Dictionary gives the meaning for Pingrup as "place where they are digging or have been digging". The name first appeared on charts of the area in 1873. The townsite came into being as a terminus of the Nyabing railway when it was extended into the area in 1923. The townsite was gazetted in 1924. The surrounding areas produce wheat and other cereal crops. The town is a receival site for Cooperative Bulk Handling The CBH Group (commonly known as CBH, an acronym for Co-operative Bulk Handling), is a grain growers' cooperative that handles, markets and processes grain from the wheatbelt of Western Australia. History CBH was formed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Ferdinand Von Mueller
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacias Of Western Australia
''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] |
List Of Acacia Species
Several Cladistics, cladistic analyses have shown that the genus ''Acacia sensu lato, Acacia'' is not monophyletic. While the subg. ''Acacia'' and subg. ''Phyllodinae'' are monophyletic, subg. ''Aculeiferum'' is not. This subgenus consists of three clades. Therefore, the following list of ''Acacia'' species cannot be maintained as a single entity, and must either be split up, or broadened to include species previously not in the genus. This genus has been provisionally divided into 5 genus, genera, ''Acacia'', ''Vachellia'', ''Senegalia'', ''Acaciella'' and ''Mariosousa''. The proposed type species of ''Acacia'' is ''Acacia penninervis''. Which of these segregate genera is to retain the name ''Acacia'' has been controversial. The genus was previously typified with the African species ''Acacia scorpioides'' (L.) W.F.Wright, a synonym of ''Acacia nilotica'' (L.) Delile. Under the original typification, the name ''Acacia'' would stay with the group of species currently recognized ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frost
Frost is a thin layer of ice on a solid surface, which forms from water vapor in an above-freezing atmosphere coming in contact with a solid surface whose temperature is below freezing, and resulting in a phase change from water vapor (a gas) to ice (a solid) as the water vapor reaches the freezing point. In temperate climates, it most commonly appears on surfaces near the ground as fragile white crystals; in cold climates, it occurs in a greater variety of forms. The propagation of crystal formation occurs by the process of nucleation. The ice crystals of frost form as the result of fractal process development. The depth of frost crystals varies depending on the amount of time they have been accumulating, and the concentration of the water vapor (humidity). Frost crystals may be invisible (black), clear (translucent), or white; if a mass of frost crystals scatters light in all directions, the coating of frost appears white. Types of frost include crystalline frost (hoar fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drought
A drought is defined as drier than normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D. Jiang, A. Khan, W. Pokam Mba, D. Rosenfeld, J. Tierney, and O. Zolina, 2021Water Cycle Changes In Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. Maycock, T. Waterfield, O. Yelekçi, R. Yu, and B. Zhou (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 1055–1210, doi:10.1017/9781009157896.010. This means that a drought is "a moisture deficit relative to the average water availability at a given location and season". A drought can last for days, months or years. Drought ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erosion Control
Erosion control is the practice of preventing or controlling wind or water erosion in agriculture, land development, coastal areas, river banks and construction. Effective erosion controls handle surface runoff and are important techniques in preventing water pollution, soil loss, wildlife habitat loss and human property loss. Usage Erosion controls are used in natural areas, agricultural settings or urban environments. In urban areas erosion controls are often part of stormwater runoff management programs required by local governments. The controls often involve the creation of a physical barrier, such as vegetation or rock, to absorb some of the energy of the wind or water that is causing the erosion. They also involve building and maintaining storm drains. On construction sites they are often implemented in conjunction with sediment controls such as sediment basins and silt fences. Bank erosion is a natural process: without it, rivers would not meander and change course. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Median Strip
The median strip, central reservation, roadway median, or traffic median is the reserved area that separates opposing lanes of traffic on divided roadways such as divided highways, dual carriageways, freeways, and motorways. The term also applies to divided roadways other than highways, including some major streets in urban or suburban areas. The reserved area may simply be paved, but commonly it is adapted to other functions; for example, it may accommodate decorative landscaping, trees, a median barrier, or railway, rapid transit, light rail, or streetcar lines. Regional terminology There is no international English standard for the term. Median, median strip, and median divider island are common in North American and Antipodean English. Variants in North American English include regional terms such as neutral ground in New Orleans usage. In British English the central reservation or central median the preferred usage; it also occurs widely in formal documents in som ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yorke Peninsula
The Yorke Peninsula is a peninsula located northwest and west of Adelaide in South Australia, between Spencer Gulf on the west and Gulf St Vincent on the east. The peninsula is separated from Kangaroo Island to the south by Investigator Strait. The most populous town in the region is Kadina. History Prior to European settlement of the area commencing around 1840, following the British colonisation of South Australia, Yorke Peninsula was the home to the Narungga people. This Aboriginal Australian nation are the traditional owners of the land, and comprised four clans sharing the peninsula, known as Guuranda: Kurnara in the north, Dilpa in the south, Wari in the west and Windarra in the east. Today the descendants of these people still live on Yorke Peninsula, supported by the Narungga Aboriginal Progress Association in Maitland, and in the community at Point Pearce. It was named “Yorke’s Peninsula” by Captain Matthew Flinders, after Charles Philip Yorke (later Lord H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maitland, South Australia
Maitland () is a town in South Australia. By road, it is 168 km west of Adelaide by, 164 km south of Port Pirie and 46 km north of Minlaton known as the "heart of Yorke Peninsula" due to being near the centre of the region. At the , Maitland had a population of 1,029. Maitland is within a short driving distance of coastal towns on either side, with Port Victoria to the west and Ardrossan to the east, each within 25 km. It has a grain receiving depot operated by AWB Limited, serviced only by road. Maitland is also the home base of the Narungga Aboriginal Progress Association. History The town was named in 1872 after Lady Jean Maitland, who died in 1766, who was the wife of the 2nd Lord of Kilkerran, Sir James Fergusson, 1688-1759 2nd Baronet of Kilkerran, the Great-Great Grandmother of governor of South Australia at this time, Sir James Fergusson 1832-1907; the local aborigines calling it "madu waltu", meaning white flint. Maitland's urban design is patt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moonta, South Australia
Moonta is a town on the Yorke Peninsula of South Australia, north-northwest of the state capital of Adelaide. It is one of three towns known as the Copper Coast or "Little Cornwall" for their shared copper mining history. Description The town's centre is about south west of Kadina, site of Wallaroo Mines, and south of the port of Wallaroo. There are 11 suburbs surrounding central Moonta, each being a distinct historic locality or hamlet. These are: Cross Roads, East Moonta, Hamley, Kooroona, Moonta Bay, Moonta Mines, North Moonta, North Yelta, Paramatta, Port Hughes and Yelta. At the 2011 census, the Moonta township and the adjacent suburbs of Cross Roads and Yelta had a combined population of 681. The broader Moonta urban centre, also including Moonta Bay, North Moonta and Port Hughes, had a population of 3,659. By 2016, the area had grown to a population of 4,700, making it the fastest growing area on the Copper Coast. History Aboriginal The Moonta area ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
