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Pitlochry Fish Ladder
The Pitlochry fish ladder is a fish ladder next to the Pitlochry Power Station, near Pitlochry, Perth and Kinross, Scotland, which allows salmon to travel upstream during the breeding season. Although viewing the ladder is still allowed, the observation tank as of July 2019 has been closed due to "access and safety concerns" Live web feeds are still available via the visitor's centre. Construction details The ladder was constructed as a result of a 1943 Act of Parliament which laid a duty of care on the North of Scotland Hydro-Electric Board to preserve fish stocks in the waterways encompassing its power schemes. The form and design were created by the fish biologist John Berry. It was completed in 1951 alongside the dam for the hydro-electric power station as part of the Tummel hydro-electric power scheme and was installed in 1952. It was the first of its type in Scotland. The fish ladder consists of 34 separate pools, each higher than the last and covering a dista ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pitlochry Fish-ladder
Pitlochry (; gd, Baile Chloichridh or ) is a town in the Perth and Kinross council area of Scotland, lying on the River Tummel. It is historically in the county of Perthshire, and has a population of 2,776, according to the 2011 census.Scotland's 2011 census. (n.p.). Scotland's Census. Retrieved 24 November 2015, from http://www.scotlandscensus.gov.uk/ It is largely a Victorian town, which developed into a tourist resort after Queen Victoria and Prince Albert visited the area in 1842 and bought a highland estate at Balmoral, and the arrival of the railway in 1863. It remains a popular tourist resort today and is particularly known for its Pitlochry Festival Theatre, salmon ladder and as a centre for hillwalking, surrounded by mountains such as Ben Vrackie and Schiehallion. It is popular as a base for coach holidays. The town has retained many stone Victorian buildings, and the high street has an unusual period cast iron canopy over one side. History Pitlochry today dates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tummel Hydro-electric Power Scheme
The Tummel hydro-electric power scheme is an interconnected network of dams, power stations, aqueducts and electric power transmission in the Grampian Mountains of Scotland. Roughly bounded by Dalwhinnie in the north, Rannoch Moor in the west and Pitlochry in the east it comprises a water catchment area of around and primary water storage at Loch Ericht, Loch Errochty, Loch Rannoch and Loch Tummel, in Perth and Kinross. Water, depending on where it originates and the path it takes, may pass through as many as five of the schemes nine power stations as it progresses from north-west to south-east. The scheme was constructed in the 1940s and 50s incorporating some earlier sites. It is currently managed by SSE plc. Early Development With a growing need for electricity in the central belt of Scotland individual power stations at Rannoch and Tummel Bridge plus associated dams and infrastructure were constructed in the 1930s for the privately owned Grampian Electric Supply Compan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tourist Attractions In Perth And Kinross
Tourism is travel for pleasure or business; also the theory and practice of touring, the business of attracting, accommodating, and entertaining tourists, and the business of operating tours. The World Tourism Organization defines tourism more generally, in terms which go "beyond the common perception of tourism as being limited to holiday activity only", as people "travelling to and staying in places outside their usual environment for not more than one consecutive year for leisure and not less than 24 hours, business and other purposes". Tourism can be domestic (within the traveller's own country) or international, and international tourism has both incoming and outgoing implications on a country's balance of payments. Tourism numbers declined as a result of a strong economic slowdown (the late-2000s recession) between the second half of 2008 and the end of 2009, and in consequence of the outbreak of the 2009 H1N1 influenza virus, but slowly recovered until the COVID-19 p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commercial Buildings Completed In 1951
Commercial may refer to: * a dose of advertising conveyed through media (such as - for example - radio or television) ** Radio advertisement ** Television advertisement * (adjective for:) commerce, a system of voluntary exchange of products and services ** (adjective for:) trade, the trading of something of economic value such as goods, services, information or money * Two functional constituencies in elections for the Legislative Council of Hong Kong: **Commercial (First) **Commercial (Second) * ''Commercial'' (album), a 2009 album by Los Amigos Invisibles * Commercial broadcasting * Commercial style or early Chicago school, an American architectural style * Commercial Drive, Vancouver, a road in Vancouver, British Columbia, Canada * Commercial Township, New Jersey, in Cumberland County, New Jersey See also * * Comercial (other), Spanish and Portuguese word for the same thing * Commercialism Commercialism is the application of both manufacturing and consumption towa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Migrations
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. Most f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquatic Ecology
An aquatic ecosystem is an ecosystem formed by surrounding a body of water, in contrast to land-based terrestrial ecosystems. Aquatic ecosystems contain communities of organisms that are dependent on each other and on their environment. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems. Freshwater ecosystems may be lentic (slow moving water, including pools, ponds, and lakes); lotic (faster moving water, for example streams and rivers); and wetlands (areas where the soil is saturated or inundated for at least part of the time). Types Marine ecosystems Marine coastal ecosystem Marine surface ecosystem Freshwater ecosystems Lentic ecosystem (lakes) Lotic ecosystem (rivers) Wetlands Functions Aquatic ecosystems perform many important environmental functions. For example, they recycle nutrients, purify water, attenuate floods, recharge ground water and provide habitats for wildlife. Aquatic ecosystems are also used f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loch Faskally
Loch Faskally (Scottish Gaelic: Loch Faschoille) is a man-made reservoir in Perth and Kinross, Scotland, northwest of Pitlochry. Geography The loch lies between steeply wooded hills and is approximately in length, narrowing to around wide. The loch is retained by the Pitlochry Dam which was built by Wimpey Construction between 1947 and 1950 as part of the North of Scotland Hydro-Electric Board's Tummel Hydro-Electric Power Scheme. The dam incorporates a salmon fish ladder, allowing around 5,400 salmon to ascend annually, and is a popular visitor attraction. The loch is popular with anglers. The water holds a good head of brown trout and the native fish are augmented by a stocking in the 1-5lb range. A 7-pounder was recorded in 2001. Salmon and a few sea trout pass through as they head up the Tummel and Garry systems. 54 salmon were caught in 2001 the best being a fish of 14 ½ lbs, however fish to 28lbs have also been caught. June also sees the arrival of the summer gril ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Counter
Automatic fish counters are automatic devices for measuring the number of fish passing along a particular river in a particular period of time. Usually one particular species is of interest. One important species studied by fish counters are Atlantic salmon. This species is of interest owing to its ecologically vulnerable status and anadromous lifestyles. Methods of operation Fish counters can be divided into three principal types: resistive counters, optical counters, and hydroacoustic counters. Resistive counters A resistive counter is associated with an in-river structure, an example constituting a Crump weir. The resistivity of a fish is lower than that of water. So, as fish cross this barrier, they pass embedded electrodes, and the difference in resistivity disturbs the field established in the vicinity of the electrodes, altering inter-electrode resistance. With three electrodes these disturbances can then be measured by a Wheatstone bridge, or other means, to detect t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectricity
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Ladder
A fish ladder, also known as a fishway, fish pass, fish steps, or fish cannon is a structure on or around artificial and natural barriers (such as dams, locks and waterfalls) to facilitate diadromous fishes' natural migration as well as movements of potamodromous species. Most fishways enable fish to pass around the barriers by swimming and leaping up a series of relatively low steps (hence the term ''ladder'') into the waters on the other side. The velocity of water falling over the steps has to be great enough to attract the fish to the ladder, but it cannot be so great that it washes fish back downstream or exhausts them to the point of inability to continue their journey upriver. History Written reports of rough fishways date to 17th-century France, where bundles of branches were used to make steps in steep channels to bypass obstructions. A pool and weir salmon ladder was built around 1830 by James Smith, a Scottish engineer on the River Teith, near Deanston, Perths ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Berry (zoologist)
John Berry, CBE DL FRSE (5 August 1907 – 19 February 2002) was a Scottish zoologist and ecologist. He was the first Director of the Nature Conservancy (UK) for Scotland (1949 to 1967). He was the youngest and longest served Fellow of the Royal Society of Edinburgh during the 20th century. Life He was born on 5 August 1907, the son of William Berry of Tayfield, an advocate in Edinburgh. His father instilled in him a love of nature conservation and especially bird protection. His mother died in his early youth and he was largely raised by aunts. He had brittle bones and dyslexia. John was sent to boarding school, being educated at Eton College in England, and then continuing on to Trinity College, Cambridge before receiving a PhD at St Andrews University. At Cambridge he shared accommodation (and a love of birds) with Peter Scott, later to become one of Britain's most loved ornithologists. During this time Berry was nicknamed ’’’Gooseberry’’’, due to his love and k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Of Scotland Hydro-Electric Board
The North of Scotland Hydro-Electric Board (1943–1990) was founded to design, construct and manage hydroelectricity projects in the Highlands of Scotland. It is regarded as one of the major achievements of Scottish politician Thomas Johnston, who chaired the board from 1945 to 1959. Background In the 1930s several schemes were proposed to develop hydro-electric power in the north of Scotland. These met with opposition by landowners, sporting interest and the coal mining industry on the grounds of competition. There was also opposition from official sources. Plans to build a power station at Kinlochleven for the benefit of the aluminium industry were shelved when Inverness County Council refused to allow water from the River Spey and River Laggan to cross the county border into Argyllshire. In 1938, the Caledonian Water Power bill was defeated in Parliament. This would have allowed a private company to build hydro-electric schemes in the Highlands, and its defeat was welcomed b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
