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Lake Warden (Western Australia)
Lake Warden is a salt lake in the Goldfields-Esperance region of Western Australia. It and its associated wetlands are protected in a nature reserve; they were recognised as being of international importance under the Ramsar Convention through designation of the Lake Warden System on 7 June 1990 as Ramsar Site 485. The lake is also a DIWA-listed wetland. Location The lake is about north of Esperance, between the two main access roads to the town, the South Coast and Coolgardie-Esperance Highways. It lies in the Esperance Plains IBRA bioregion, and in the Esperance Lakes Nature Reserve. Lake Warden was so named in 1848 by the explorer John Septimus Roe in recognition of Lady Ann Warden Spencer, wife of Sir Richard Spencer, the Government Resident in Albany, for whom the nearby Lake Spencer (now known as Pink Lake) was named. Description The lake has an average depth of , which has been slowly increasing since recording first began in 1979. The average depth of t ... [...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] |
Pink Lake (Western Australia)
Pink Lake (previously known as Lake Spencer) is a salt lake in the Goldfields-Esperance region of Western Australia. Although historically the water in the lake was visibly pink, as of 2017 it had not been pink for over ten years. Salt concentration is vital to Pink Lake's pink hue, and Pink Lake may turn pink again as conditions change. It lies about west of Esperance and is bounded to the east by the South Coast Highway. The dynamics of why a lake turns pink are very complex. External changes and weather conditions can affect the colour of the lake. Esperance's Pink Lake has lost its pink colour due to salinity changes caused by human activity. Description The distinctive colour of the water changes is a result of green alga ''Dunaliella salina'', halobacterium ''Halobacterium cutirubrum'', and/or high concentration of brine prawn. Once the lake water reaches a salinity level greater than that of sea water, the temperature is high enough and adequate light conditions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia Cyclops
''Acacia cyclops'', commonly known as coastal wattle, cyclops wattle, one-eyed wattle, red-eyed wattle, redwreath acacia, western coastal wattle, rooikrans, rooikrans acacia, is a coastal shrub or small tree in the family Fabaceae. Native to Australia, it is distributed along the west coast of Western Australia as far north as Leeman, and along the south coast into South Australia. The Noongar peoples of Western Australia know the plant as wilyawa or woolya wah. Description It is found in locations exposed to coastal winds, red-eyed wattle grows as a dense, dome shaped shrub; this helps protect against salt spray, sand-blast and erosion of soil at the roots. When sheltered from the wind, it tends to grow as a small tree typically to a height of but can reach as high as . Like many other ''Acacia'' species, red-eyed wattle has phyllodes rather than true leaves. The phyllodes range from four to eight centimetres long, and from six to twelve millimetres wide. Its flower heads ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melaleuca Preissiana
''Melaleuca preissiana'', commonly known as stout paperbark, modong or moonah, is a plant in the myrtle family, Myrtaceae and is endemic to coastal areas of southwest Australia. It is a shrub or small tree with papery bark, small leaves and spikes of usually white flowers. It occurs chiefly in areas that are seasonally wet. Description ''Melaleuca preissiana'' is a shrub or small tree sometimes growing to tall with papery bark or sometimes pale-coloured, hard bark. Its leaves are arranged alternately and are long, wide, flat, narrow elliptic to narrow egg-shaped with the end tapering to a point. The flowers are usually white, but sometimes a shade of cream or yellow. They are arranged in spikes on the ends of branches which continue to grow after flowering and sometimes in the upper leaf axils. The spikes are up to in diameter with 7 to 21 groups of flowers in threes. The petals are long and fall off as the flower ages. The stamens are arranged in five bundles around the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juncaceae
Juncaceae is a family of flowering plants, commonly known as the rush family. It consists of 8 genera and about 464 known species of slow-growing, rhizomatous, herbaceous monocotyledonous plants that may superficially resemble grasses and sedges. They often grow on infertile soils in a wide range of moisture conditions. The best-known and largest genus is ''Juncus''. Most of the ''Juncus'' species grow exclusively in wetland habitats. A few rushes, such as '' Juncus bufonius'' are annuals, but most are perennials. Description The leaves are evergreen and well-developed in a basal aggregation on an erect stem. They are alternate and tristichous (i.e., with three rows of leaves up the stem, each row of leaves arising one-third of the way around the stem from the previous leaf). Only in the genus '' Distichia'' are the leaves distichous. The rushes of the genus ''Juncus'' have flat, hairless leaves or cylindrical leaves. The leaves of the wood-rushes of the genus ''Luzula' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyperaceae
The Cyperaceae are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "true sedges" genus ''Carex'' with over 2,000 species. These species are widely distributed, with the centers of diversity for the group occurring in tropical Asia and tropical South America. While sedges may be found growing in almost all environments, many are associated with wetlands, or with poor soils. Ecological communities dominated by sedges are known as sedgelands or sedge meadows. Some species superficially resemble the closely related rushes and the more distantly related grasses. Features distinguishing members of the sedge family from grasses or rushes are stems with triangular cross-sections (with occasional exceptions, a notable example being the tule which has a round cross-section) and leaves that are spirally arranged in three ranks. In comparison, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melaleuca Cuticularis
''Melaleuca cuticularis'', commonly known as the saltwater paperbark is a tree in the myrtle family, Myrtaceae and is native to the south-west of Western Australia. There is also a disjunct population on Kangaroo Island in South Australia. It is distinguished from other melaleucas by its unusual fruits and very white, papery bark. Description ''Melaleuca cuticularis'' is usually a shrub growing to a height of high but sometimes develops into a tree as high as . The leaves are linear to oblong, grey-green to dark green in colour and long and wide. The trunk of ''M. cuticularis'' is covered in a pale papery bark and connects to rigid and torturous branches. The flowers are in groups of three, white or cream in colour, located on the ends of the branches and surrounded by overlapping brown bracts. ''M. cuticularis'' flowers between the months of September and January and the fruit which follow are woody capsules appearing star-shaped when viewed end-on. The fruits are gener ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Clearing In Australia
Land clearing in Australia describes the removal of native vegetation and deforestation in Australia. Land clearing involves the removal of native vegetation and habitats, including the bulldozing of native bushlands, forests, savannah, woodlands and native grasslands and the draining of natural wetlands for replacement with agriculture, urban and other land uses. , of the vegetation which existed in Australia at the time of European settlement, approximately 87% remains. One estimate places the rate of rainforest of all types has been reduced by three quarters since the time of European settlement from eight million hectares to two million. Land clearing threatens native species including ground orchids and eucalyptus. Land clearing is an important environmental issue in Australia. Bans on land clearing have been placed by state governments. This policy largely permitted Australia to abide by its commitments to the Kyoto Protocol. Causes The underlying causes of land-cle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woody Lake
Woody Lake is a salt lake in the Goldfields-Esperance region of Western Australia, approximately north east of Esperance. The lake is between Lake Wheatfield to the east and Windabout Lake to the west. The lake covers an area of and is situated within the Woody Lake Nature Reserve, which occupies an area of . The reserve was originally gazetted as an "A" class nature reserve in 1970. It was gazetted again in 1978 with the purpose of "Recreation and Conservation of Flora and Fauna" when a wide limited access area on the north-east side of Wheatfield Lake was gazetted for recreational use. The reserve incorporates most of Windabout Lake, Woody Lake and Wheatfield Lake. The permanent wetlands formed by these lakes and Lake Warden form the Lake Warden System Ramsar site. The wetlands are connected by a series of channels with surface water from Coramup Creek entering the system at Lake Wheatfield and the outflow moving from east to west through Lake Wheatfield directly into Woo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrology
Hydrology () is the scientific study of the movement, distribution, and management of water on Earth and other planets, including the water cycle, water resources, and environmental watershed sustainability. A practitioner of hydrology is called a hydrologist. Hydrologists are scientists studying earth or environmental science, civil or environmental engineering, and physical geography. Using various analytical methods and scientific techniques, they collect and analyze data to help solve water related problems such as environmental preservation, natural disasters, and water management. Hydrology subdivides into surface water hydrology, groundwater hydrology (hydrogeology), and marine hydrology. Domains of hydrology include hydrometeorology, surface hydrology, hydrogeology, drainage-basin management, and water quality, where water plays the central role. Oceanography and meteorology are not included because water is only one of many important aspects within those fields. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dune
A dune is a landform composed of wind- or water-driven sand. It typically takes the form of a mound, ridge, or hill. An area with dunes is called a dune system or a dune complex. A large dune complex is called a dune field, while broad, flat regions covered with wind-swept sand or dunes with little or no vegetation are called ''ergs'' or ''sand seas''. Dunes occur in different shapes and sizes, but most kinds of dunes are longer on the stoss (upflow) side, where the sand is pushed up the dune, and have a shorter ''slip face'' in the lee side. The valley or trough between dunes is called a ''dune slack''. Dunes are most common in desert environments, where the lack of moisture hinders the growth of vegetation that would otherwise interfere with the development of dunes. However, sand deposits are not restricted to deserts, and dunes are also found along sea shores, along streams in semiarid climates, in areas of glacial outwash, and in other areas where poorly cemented sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marsh
A marsh is a wetland that is dominated by herbaceous rather than woody plant species.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p Marshes can often be found at the edges of lakes and streams, where they form a transition between the aquatic and terrestrial ecosystems. They are often dominated by grasses, rushes or reeds. If woody plants are present they tend to be low-growing shrubs, and the marsh is sometimes called a carr. This form of vegetation is what differentiates marshes from other types of wetland such as swamps, which are dominated by trees, and mires, which are wetlands that have accumulated deposits of acidic peat. Marshes provide habitats for many kinds of invertebrates, fish, amphibians, waterfowl and aquatic mammals. This biological productivity means that marshes contain 0.1% of global sequestered terrestrial carbon. Moreover, they have an outsized influence on climate resi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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