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Lake Coleridge
Lake Coleridge ( mi, Whakamatau) is located in inland Canterbury, in New Zealand's South Island. Located to the northwest of Methven, it has a surface area of . The lake is situated in an over-deepened valley formed by a glacier over 20,000 years ago in the Pleistocene era. It currently has no natural outflows. There is a small settlement at the lake. Ecology Early colonial explorers found the shores of the lake covered in mānuka (or kānuka), kōwhai, cabbage trees, flax and general swamp plants. The lake was also surrounded by Southern Rata trees, and native beech trees. The lake itself was fairly lacking in aquatic plants due to a lack of nutrients. The lake was known for a population of large eels. Human activity has significantly changed the ecology. Colonial settlers introduced game fish including rainbow trout, brown trout, Atlantic salmon and Chinook salmon. The changing water levels caused by the operation of the Coleridge Power Station killed most of the kānuka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coleridge Power Station
The Coleridge Power Station is a hydroelectric facility at Lake Coleridge on the Rakaia River in Canterbury, New Zealand. The power station is owned and operated by TrustPower. History Coleridge was New Zealand's first major power station in which the state was involved. It was constructed mainly to supply electricity to Christchurch, with construction beginning in 1911 and completed with three generating units in 1914. For the most part it was built by hand, with some heavier work done by steam shovels. Following its initial construction, the twin 66 kV transmission lines connecting the power station with Christchurch's Addington substation were the highest voltage in New Zealand, and the longest at over long. In the early years of the station, demand for electricity in Christchurch grew rapidly and the transmission system extended to reach Rangiora in the north and Oamaru in the south. The limited capacity at Coleridge resulted in regular interruptions to supply. To remed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selwyn District
Selwyn District is a predominantly rural district in central Canterbury, on the east coast of New Zealand's South Island. It is named after the Selwyn River / Waikirikiri, which is in turn named after Bishop George Selwyn, the first Anglican bishop of New Zealand who, in 1843 and 1844, travelled the length of the country by horse, foot, boat and canoe, leaving in his wake a sprinkling of locations that now bear his name. History The first inhabitants of the area were the Māori who first settled New Zealand from the Cook and Society Islands about 700 years ago. The predominant Māori tribe today, in Selwyn and most of the rest of the South Island, is Ngāi Tahu, whose local marae (meeting house) is at Taumutu near the exit of Lake Ellesmere (Te Waihora). In the late 19th century, European (chiefly British) colonists arrived and carved the area up into farmland. This has remained the predominant pattern ever since. The Selwyn District as a unit of government was formed in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swamp
A swamp is a forested wetland.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p. Swamps are considered to be transition zones because both land and water play a role in creating this environment. Swamps vary in size and are located all around the world. The water of a swamp may be fresh water, brackish water, or seawater. Freshwater swamps form along large rivers or lakes where they are critically dependent upon rainwater and seasonal flooding to maintain natural water level fluctuations.Hughes, F.M.R. (ed.). 2003. The Flooded Forest: Guidance for policy makers and river managers in Europe on the restoration of floodplain forests. FLOBAR2, Department of Geography, University of Cambridge, Cambridge, UK. 96 p. Saltwater swamps are found along tropical and subtropical coastlines. Some swamps have hammocks, or dry-land protrusions, covered by aquatic vegetation, or vegetation that tolerates periodic inu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acaena
''Acaena'' is a genus of about 60 species of mainly evergreen, creeping herbaceous perennial plants and subshrubs in the family Rosaceae, native mainly to the Southern Hemisphere, notably New Zealand, Australia and South America, but with a few species extending into the Northern Hemisphere, north to Hawaii ('' A. exigua'') and California ('' A. pinnatifida''). The leaves are alternate, long, and pinnate or nearly so, with 7–21 leaflets. The flowers are produced in a tight globose nflorescence in diameter, with no petals. The fruit is also a dense ball of many seeds; in many (but not all) species the seeds bear a barbed arrowhead point, the seedhead forming a burr which attaches itself to animal fur or feathers for dispersal. Several ''Acaena'' species in New Zealand are known by the common name bidibid. The word is written variously ''bidi-bidi'', ''biddy-biddy'', ''biddi-biddi'', ''biddi-bid'' and a number of other variations. These names are the English rendition of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coprosma
''Coprosma'' is a genus of flowering plants in the family Rubiaceae. It is found in New Zealand, Hawaiian Islands, Borneo, Java, New Guinea, islands of the Pacific Ocean to Australia and the Juan Fernández Islands. Description The name ''Coprosma'' means "smelling like dung" and refers to the smell (methanethiol) given out by the crushed leaves of a few species. Many species are small shrubs with tiny evergreen leaves, but a few are small trees and have much larger leaves. The flowers have insignificant petals and are wind-pollinated, with long anthers and stigmas. Most species are dioecious, but some (particularly those native to New Zealand) species can sometimes have individuals with perfect flowers. Natural hybrids are common. The fruit is a non-poisonous juicy berry, most often bright orange (but can be dark red or even light blue), containing two small seeds. The orange fruit of the larger species were eaten by Māori children, and are also popular with birds. It is said ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thicket
A thicket is a very dense stand of trees or tall shrubs, often dominated by only one or a few species, to the exclusion of all others. They may be formed by species that shed large numbers of highly viable seeds that are able to germinate in the shelter of the maternal plants. Thicket is used for tobacco pipes as it doesn't catch fire when burning tobacco. In some conditions, the formation or spread of thickets may be assisted by human disturbance of an area. Where a thicket is formed of briar (also spelled brier), which is a common name for any of a number of unrelated thorny plants, it may be called a briar patch. Plants termed briar include species in the genera ''Rosa'' (Rose), ''Rubus ''Rubus'' is a large and diverse genus of flowering plants in the rose family, Rosaceae, subfamily Rosoideae, with over 1,350 species. Raspberries, blackberries, and dewberries are common, widely distributed members of the genus. Most of the ...'', and '' Smilax''. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulex
''Ulex'' (commonly known as gorse, furze, or whin) is a genus of flowering plants in the family Fabaceae. The genus comprises about 20 species of thorny evergreen shrubs in the subfamily Faboideae of the pea family Fabaceae. The species are native to parts of western Europe and northwest Africa, with the majority of species in Iberia. Gorse is closely related to the brooms and like them has green stems and very small leaves and is adapted to dry growing conditions. However it differs in its extreme thorniness, the shoots being modified into branched thorns long, which almost wholly replace the leaves as the plant's functioning photosynthetic organs. The leaves of young plants are trifoliate, but in mature plants they are reduced to scales or small spines. All the species have yellow flowers, generally showy, some with a very long flowering season. Species The greatest diversity of ''Ulex'' species is found in the Iberian Peninsula, and most species have narrow distributio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genisteae
Genisteae is a tribe of trees, shrubs and herbaceous plants in the subfamily Faboideae of the family Fabaceae. It includes a number of well-known plants including broom, lupine (lupin), gorse and laburnum. The tribe's greatest diversity is in the Mediterranean, and most genera are native to Europe, Africa, the Canary Islands, India and southwest Asia. However, the largest genus, ''Lupinus'', is most diverse in North and South America. ''Anarthrophytum'' and ''Sellocharis'' are also South American and ''Argyrolobium'' ranges into India. Description The Genisteae arose 32.3 ± 2.9 million years ago (in the Oligocene). The members of this tribe consistently form a monophyletic clade in molecular phylogenetic analyses. The tribe does not currently have a node-based definition, but several morphological synapomorphies have been identified: … bilabiate calyces with a bifid upper lip and a trifid lower lip, … the lack of an aril, or the presence of an aril but on the short ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discaria Toumatou
''Discaria toumatou'', commonly called matagouri, tūmatakuru or wild Irishman, is a tangle-branched thorny plant endemic to New Zealand. Matagouri is a tangle-branched, extremely thorny, divaricating shrub or small tree up to five metres tall. It has small leathery leaves close to the thorns, which are only abundant in spring or the shade. The flowers are tiny and white with no petals. It is the only New Zealand native plant that has thorns. It is most common in tussock grassland, stony areas and river beds. It is common in the eastern South Island, and found in a few coastal localities in the North Island south from the mouth of the Waikato River. As with other ''Discaria'' species it fixes nitrogen from the atmosphere with the help of symbiotic bacteria of the genus ''Frankia'' in its roots. It often grows in association with mingimingi ('' Coprosma propinqua''), porcupine shrub (''Melicytus alpinus'', an alpine mahoe), native brooms (''Carmichaelia'' species) and the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinook Salmon
The Chinook salmon (''Oncorhynchus tshawytscha'') is the largest and most valuable species of Pacific salmon in North America, as well as the largest in the genus '' Oncorhynchus''. Its common name is derived from the Chinookan peoples. Other vernacular names for the species include king salmon, Quinnat salmon, Tsumen, spring salmon, chrome hog, Blackmouth, and Tyee salmon. The scientific species name is based on the Russian common name ''chavycha'' (чавыча). Chinook are anadromous fish native to the North Pacific Ocean and the river systems of western North America, ranging from California to Alaska, as well as Asian rivers ranging from northern Japan to the Palyavaam River in the Arctic northeast Siberia. They have been introduced to other parts of the world, including New Zealand, thriving in Lake Michigan Great Lakes of North America and Michigan's western rivers, and Patagonia. A large Chinook is a prized and sought-after catch for a sporting angler. The flesh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic Salmon
The Atlantic salmon (''Salmo salar'') is a species of ray-finned fish in the family Salmonidae. It is the third largest of the Salmonidae, behind Siberian taimen and Pacific Chinook salmon, growing up to a meter in length. Atlantic salmon are found in the northern Atlantic Ocean and in rivers that flow into it. Most populations are anadromous, hatching in streams and rivers but moving out to sea as they grow where they mature, after which the adults seasonally move upstream again to spawn. When the mature fish re-enter rivers to spawn, they change in colour and appearance. Some populations of this fish only migrate to large lakes, and are "landlocked", spending their entire lives in freshwater. Such populations are found throughout the range of the species. Unlike Pacific species of salmon, ''S. salar'' is iteroparous, which means it can survive spawning and return to sea to repeat the process again in another year. Such individuals can grow to extremely large sizes, although ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown Trout
The brown trout (''Salmo trutta'') is a European species of salmonid fish that has been widely introduced into suitable environments globally. It includes purely freshwater populations, referred to as the riverine ecotype, ''Salmo trutta'' morpha ''fario'', a lacustrine ecotype, ''S. trutta'' morpha ''lacustris'', also called the lake trout, and anadromous forms known as the sea trout, ''S. trutta'' morpha ''trutta''. The latter migrates to the oceans for much of its life and returns to fresh water only to spawn. Sea trout in Ireland and Britain have many regional names: sewin in Wales, finnock in Scotland, peal in the West Country, mort in North West England, and white trout in Ireland. The lacustrine morph of brown trout is most usually potamodromous, migrating from lakes into rivers or streams to spawn, although evidence indicates some stocks spawn on wind-swept shorelines of lakes. ''S. trutta'' morpha ''fario'' forms stream-resident populations, typically in alpine s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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