|
Black-fronted Dotterel
The black-fronted dotterel (''Charadrius melanops'') is a small plover in the family Charadriidae that is found throughout much of Australia and New Zealand. Taxonomy The black-fronted dotterel was formally described in 1818 by the French ornithologist Louis Pierre Vieillot under the binomial name ''Charadrius melanops''. The type locality was subsequently designated as New South Wales. The specific epithet combines the Ancient Greek ''melops'' meaning "black" with ''ōps'' meaning "face". This species was previously placed in the monotypic genus ''Elseyornis'' but a molecular phylogenetic study published in 2022 found that it was embedded in a clade containing members of the genus ''Charadrius''. The black-fronted dotterel was therefore moved back to ''Charadrius''. The species is monotypic: no subspecies are recognised. Description As an adult, this small shorebird has an overall length of , a wingspan of and a weight of . The sexes are similar in appearance. It has a dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Victoria Desert
The Great Victoria Desert is a sparsely populated desert ecoregion and Interim Biogeographic Regionalisation for Australia, interim Australian bioregion in Western Australia and South Australia. History In 1875, British-born Australian explorer Ernest Giles became the first European to cross the desert. He named the desert after the then-reigning monarch, Queen Victoria. In 1891, David Lindsey's expedition travelled across this area from north to south. Frank Hann was looking for gold in this area between 1903 and 1908. Len Beadell explored the area in the 1960s. Location and description The Great Victoria is the largest desert in Australia, and consists of many small sandhills, grassland plains, areas with a closely packed surface of pebbles (called desert pavement or gibber plains), and salt lake (geography), salt lakes. It is over wide (from west to east) and covers an area of from the Eastern Goldfields region of Western Australia to the Gawler Ranges in South Australia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estuary
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environments and are an example of an ecotone. Estuaries are subject both to marine influences such as tides, waves, and the influx of saline water, and to fluvial influences such as flows of freshwater and sediment. The mixing of seawater and freshwater provides high levels of nutrients both in the water column and in sediment, making estuaries among the most productive natural habitats in the world. Most existing estuaries formed during the Holocene epoch with the flooding of river-eroded or glacially scoured valleys when the sea level began to rise about 10,000–12,000 years ago. Estuaries are typically classified according to their geomorphological features or to water-circulation patterns. They can have many different names, such as ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mudflat
Mudflats or mud flats, also known as tidal flats or, in Ireland, slob or slobs, are coastal wetlands that form in intertidal areas where sediments have been deposited by tides or rivers. A global analysis published in 2019 suggested that tidal flat ecosystems are as extensive globally as mangroves, covering at least of the Earth's surface. / They are found in sheltered areas such as bays, bayous, lagoons, and estuaries; they are also seen in freshwater lakes and salty lakes (or inland seas) alike, wherein many rivers and creeks end. Mudflats may be viewed geologically as exposed layers of bay mud, resulting from deposition of estuarine silts, clays and aquatic animal detritus. Most of the sediment within a mudflat is within the intertidal zone, and thus the flat is submerged and exposed approximately twice daily. A recent global remote sensing analysis estimated that approximately 50% of the global extent of tidal flats occurs within eight countries (Indonesia, China, Au ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Claypan
Claypan is a dense, compact, slowly permeable layer in the subsoil. It has a much higher clay content than the overlying material, from which it is separated by a sharply defined boundary. The dense structure restricts root growth and water infiltration. Therefore, a perched water table might form on top of the claypan. In the Canadian classification system, claypan is defined as a clay-enriched illuvial B (Bt) horizon. Location Claypan is present in a wide area of the central United States (about 4 million ha) across multiple states such as Kansas, Oklahoma, and Illinois. It can also be found in Australia throughout the south-west Queensland. Formation Claypan is formed in different parent materials depending on geological locations, such as floodplains. The formation of the claypan relates to a lack of vegetation coverage, soil particle size distribution, and high rainfall. The lack of vegetation coverage makes soil become more susceptible to raindrop attacks. When the raindr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Billabong
In Australian English, a billabong ( ) is a small body of water, usually permanent. It is usually an oxbow lake caused by a change in course of a river or creek, but other types of small lakes, ponds or waterholes are also called billabongs. The term is likely borrowed from Wiradjuri, an Aboriginal Australian language of New South Wales. Etymology The word ''billabong'' is most likely derived from the Wiradjuri language of southern New South Wales, which "describes a pond or pool of water that is left behind when a river alters course or after floodwaters recede". According to the '' Macquarie Dictionary'' (2005), the original term ''bilabaŋ'' means "a watercourse that runs only after rain", with ''bila'' meaning "river", and possibly combined with ''bong'' or ''bung'', meaning "dead". The attribution of this last part of the word was contested in 2004 by Frederick Ludowyk of the Australian National Dictionary Centre, whose view was that that "-bong" or "-bang" was a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake
A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from the ocean, although they may be connected with the ocean by rivers. Lakes, as with other bodies of water, are part of the water cycle, the processes by which water moves around the Earth. Most lakes are fresh water and account for almost all the world's surface freshwater, but some are salt lakes with salinities even higher than that of seawater. Lakes vary significantly in surface area and volume of water. Lakes are typically larger and deeper than ponds, which are also water-filled basins on land, although there are no official definitions or scientific criteria distinguishing the two. Lakes are also distinct from lagoons, which are generally shallow tidal pools dammed by sandbars or other material at coastal regions of ocean ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wetland
A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen-poor ( anoxic) processes taking place, especially in the soils. Wetlands form a transitional zone between waterbodies and dry lands, and are different from other terrestrial or aquatic ecosystems due to their vegetation's roots having adapted to oxygen-poor waterlogged soils. They are considered among the most biologically diverse of all ecosystems, serving as habitats to a wide range of aquatic and semi-aquatic plants and animals, with often improved water quality due to plant removal of excess nutrients such as nitrates and phosphorus. Wetlands exist on every continent, except Antarctica. The water in wetlands is either freshwater, brackish or saltwater. The main types of wetland are defined based on the dominant plants and the source of the water. For example, ''marshes'' ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Awatere River
The Awatere River is a large river flowing through Marlborough, New Zealand. Flowing along the trace of the active Awatere Fault, it runs northeast through a straight valley to the west of the Inland Kaikōura mountains. This valley is parallel with that of the Waiau Toa / Clarence River, to the south. It flows for from its source in the mountainous interior to reach Cook Strait close to the town of Seddon. The New Zealand Ministry for Culture and Heritage gives a translation of "swift river" for ''Awatere'' in Māori. Demographics The Awatere River valley, which corresponds to the statistical area of Awatere, covers , and includes the settlements of Seddon and Ward. It had an estimated population of as of with a population density of people per km2. Awatere had a population of 1,617 at the 2018 New Zealand census, a decrease of 9 people (−0.6%) since the 2013 census, and an increase of 9 people (0.6%) since the 2006 census. There were 594 households, comprisin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wairau River
The Wairau River is one of the longest rivers in New Zealand's South Island. It flows for from the Spenser Mountains (a northern range of the Southern Alps), firstly in a northwards direction and then northeast down a long, straight valley in inland Marlborough. The river's lower reaches and surrounding fertile plain provide the basis for the Marlborough wine region. The river has its outflow into Cook Strait at Cloudy Bay, just north of Blenheim in the island's northeast. The Wairau River meets the sea at the Wairau Bar, an important archaeological site. In pre-European and early colonial New Zealand, one of the South Island's largest Māori settlements was close to the mouth of the Wairau. The Wairau Valley was the scene of the 1843 Wairau Affray, the first violent clash between Māori residents and English settlers over land in New Zealand and the only one to take place in the South Island. Hydroelectricity Two hydroelectric power stations operate on tributaries of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Island
The South Island ( , 'the waters of Pounamu, Greenstone') is the largest of the three major islands of New Zealand by surface area, the others being the smaller but more populous North Island and Stewart Island. It is bordered to the north by Cook Strait, to the west by the Tasman Sea, to the south by the Foveaux Strait and Southern Ocean, and to the east by the Pacific Ocean. The South Island covers , making it the List of islands by area, world's 12th-largest island, constituting 56% of New Zealand's land area. At low altitudes, it has an oceanic climate. The most populous cities are Christchurch, Dunedin, Nelson, New Zealand, Nelson and Invercargill. Prior to European settlement, Te Waipounamu was sparsely populated by three major iwi – Kāi Tahu, Kāti Māmoe, and the historical Waitaha (South Island iwi), Waitaha – with major settlements including in Kaiapoi Pā near modern-day Christchurch. During the Musket Wars expanding iwi colonised Te Tau Ihu Māori, Te Tau Ihu, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canterbury Region
Canterbury () is a region of New Zealand, located in the central-eastern South Island. The region covers an area of , making it the largest region in the country by area. It is home to a population of The region in its current form was established in 1989 during nationwide local government reforms. The Kaikōura District joined the region in 1992 following the abolition of the Nelson-Marlborough Regional Council. Christchurch, the South Island's largest city and the country's second-largest urban area, is the seat of the region and home to percent of the region's population. Other major towns and cities include Timaru, Ashburton, Rangiora and Rolleston. History Natural history The land, water, flora, and fauna of Canterbury has a long history, stretching from creation of the greywacke basement rocks that make up the Southern Alps to the arrival of the first humans. This history is linked to the solidification and development of tectonic plates, the development of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
