In addition to wood fiber and plastic, WPCs can also contain other ligno-cellulosic and/or inorganic filler materials. WPCs are a subset of a larger category of materials called natural fiber plastic composites (NFPCs), which may contain no cellulose-based fiber fillers such as pulp fibers, peanut hulls, coffee husk, bamboo, straw, digestate, etc.
Chemical additives provide for integration of polymer and wood flour (powder) while facilitating optimal processing conditions. (Full article...)
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The Forestry Library of the FAO Forestry Department, located at FAO headquarters in Rome and now part of the David Lubin Memorial Library, is a specialized library that holds approximately 6,000 books and over 600 current periodical titles, yearbooks and other serial titles on forestry and related areas. It also has a large collection of grey literature - including documentation on FAO forestry projects and papers and reports from various FAO Forestry meetings - much of which is not readily available anywhere else. (Full article...)
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Interception refers to precipitation that does not reach the soil, but is instead intercepted by the leaves, branches of plants and the forest floor. It occurs in the canopy (i.e. canopy interception), and in the forest floor or litter layer (i.e. forest floor interception ). Because of evaporation, interception of liquid water generally leads to loss of that precipitation for the drainage basin, except for cases such as fog interception, but increase flood protection dramatically, Alila et al., (2009). Intercepted snowfall does not result in any notable amount of evaporation, and most of the snow falls off the tree by wind or melts. However, intercepted snow can more easily drift with the wind, out of the watershed. Conifers have a greater interception capacity than hardwoods. Their needles gives them more surface area for droplets to adhere to, and they have foliage in spring and fall, therefore interception also depends on the type of vegetation in a wooded area.
Mitscherlich in 1971 calculated the water storage potential as interception values for different species and stand densities. A storm event might produce 50 – 100 mm of rainfall and 4 mm might be the maximum intercepted in this way. Grah and Wilson in 1944 did sprinkling experiments where they watered plants to see how much of the intercepted is kept after watering stops.
Trees like Norway maple and a small-leaved lime have an interception of approximately 38% of the gross precipitation in temperate climate.
The interception depends on the leaf area index and what kind of leaves they are.
Rural sociology is a field of sociology traditionally associated with the study of social structure and conflict in rural areas. It is an active academic field in much of the world, originating in the United States in the 1910s with close ties to the national Department of Agriculture and land-grant university colleges of agriculture.
The International Tropical Timber Agreement (ITTA), 1983) is an agreement to provide an effective framework for cooperation between tropical timber producers and consumers and to encourage the development of national policies aimed at sustainable utilization and conservation of tropical forests and their genetic resources. The International Tropical Timber Organization was established under this agreement, which first opened for signature on 18 November 1983, then Entered into force on 1 April 1985. There were subsequent treaties, with an increasing number of signatories, in 1994 (ITTA2) and 2006 (ITTA3).
ITTA2 (1994) was drafted to ensure that by the year 2000 exports of tropical timber originated from sustainably managed sources and to establish a fund to assist tropical timber producers in obtaining the resources necessary to reach this objective. It further defined the mandate of the International Tropical Timber Organization. The agreement was opened for signature on 26 January 1994, and entered into force on 1 January 1997.
ITTA3 (2006) aimed to "promote the expansion and diversification of international trade in tropical timber from sustainably managed and legally harvested forests and to promote the sustainable management of tropical timber producing forests". It entered into force on 7 December 2011. (Full article...)
Before the modern axe, the stone-agehand axe without a handle was used from 1.5 million years BP. Hafted axes (those with a handle) date only from 6,000 BC. The earliest examples of handled axes have heads of stone with some form of wooden handle attached (hafted) in a method to suit the available materials and use. Axes made of copper, bronze, iron and steel appeared as these technologies developed.
The axe is an example of a simple machine, as it is a type of wedge, or dual inclined plane. This reduces the effort needed by the wood chopper. It splits the wood into two parts by the pressure concentration at the blade. The handle of the axe also acts as a lever allowing the user to increase the force at the cutting edge—not using the full length of the handle is known as choking the axe. For fine chopping using a side axe this sometimes is a positive effect, but for felling with a double bitted axe it reduces efficiency.
Generally, cutting axes have a shallow wedge angle, whereas splitting axes have a deeper angle. Most axes are double bevelled (i.e. symmetrical about the axis of the blade), but some specialist broadaxes have a single bevel blade, and usually an offset handle that allows them to be used for finishing work without putting the user's knuckles at risk of injury. Less common today, they were once an integral part of a joiner and carpenter's tool kit, not just a tool for use in forestry. A tool of similar origin is the billhook.
Most modern axes have steel heads and wooden handles, typically hickory in the US and ash in Europe and Asia, although plastic or fibreglass handles are also common. Modern axes are specialised by use, size and form. Hafted axes with short handles designed for use with one hand are often called hand axes but the term hand axe refers to axes without handles as well. Hatchets tend to be small hafted axes often with a hammer on the back side (the poll). As easy-to-make weapons, axes have frequently been used in combat, and is one of humanity's oldest melee weapons. (Full article...)
The relascope, invented by Walter Bitterlich, is a multi-use instrument for forest inventory. It is primarily used to find the height of a tree, the basal area of a tree, and the diameter of a tree anywhere along the bole. This instrument is used mostly for applications involving variable radius sample plots in a forest survey. (Full article...)
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Pacing is a reasonably easy and quick method of measuring distance in the field. It is used to measure a distance and is often used with a sighting or a hand compass. Most commonly, pacing is split up into segments, such as chains, which are set measures of distance. By determining one's own pace, distance can easily be estimated. (Full article...)
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Tree planting is the process of transplanting tree seedlings, generally for forestry, land reclamation, or landscaping purposes. It differs from the transplantation of larger trees in arboriculture and from the lower-cost but slower and less reliable distribution of tree seeds. Trees contribute to their environment over long periods of time by providing oxygen, improving air quality, climate amelioration, conserving water, preserving soil, and supporting wildlife. During the process of photosynthesis, trees take in carbon dioxide and produce the oxygen we breathe.
In silviculture, the activity is known as "reforestation", or "afforestation," depending on whether the area being planted has recently been forested or not. It involves planting seedlings over an area of land where the forest has been harvested or damaged by fire, disease, or human activity. Tree planting is carried out in many different parts of the world, and strategies may differ widely across nations and regions and among individual reforestation companies. Tree planting is grounded in forest science and, if performed properly, can result in the successful regeneration of a deforested area. Reforestation is the commercial logging industry's answer to the large-scale destruction of old-growth forests, but a planted forest rarely replicates the biodiversity and complexity of a natural forest.
Because trees remove carbon dioxide from the air as they grow, tree planting can be used to help limit climate change. Desert greening projects are also motivated by improved biodiversity and reclamation of natural water systems, as well as improved economic and social welfare due to an increased number of jobs in farming and forestry. (Full article...)
Variable retention is a relatively new silvicultural system that retains forest structural elements for at least one rotation in order to preserve environmental values associated with structurally complex forests.
Some examples for environmental values are forest cover connectivity, soil stabilization, microclimate under retained trees, habitats associated with live or dead trees and species diversity due to habitat preservation, and wildlife corridor preservation. Variable retention also aids in emulation of natural disturbances by leaving behind some residual structure from previous stand which is typical for stand replacing disturbances Traditional silviculture systems such as clearcut, patch cut, shelterwood, etc. are focused on maximizing timber production and future regeneration of the trees. Variable retention on the other hand is focused on what is retained (Full article...)
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A secondary forest (or second-growth forest) is a forest or woodland area which has regenerated through largely natural processes after human-caused disturbances, such as timber harvest or agriculture clearing, or equivalently disruptive natural phenomena. It is distinguished from an old-growth forest (primary or primeval forest), which has not recently undergone such disruption, and complex early seral forest, as well as third-growth forests that result from harvest in second growth forests. Secondary forest regrowing after timber harvest differs from forest regrowing after natural disturbances such as fire, insect infestation, or windthrow because the dead trees remain to provide nutrients, structure, and water retention after natural disturbances. Secondary forests are notably different from primary forests in their composition and biodiversity; however, they may still be helpful in providing habitat for native species, preserving watersheds, and restoring connectivity between ecosystems. (Full article...)
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The chain (abbreviated ch) is a unit of length equal to 66 feet (22 yards), used in both the US customary and Imperial unit systems. It is subdivided into 100 links. There are 10 chains in a furlong, and 80 chains in one statute mile. In metric terms, it is 20.1168 m long. By extension, chainage (running distance) is the distance along a curved or straight survey line from a fixed commencing point, as given by an odometer.
The chain has been used for several centuries in England and in some other countries influenced by English practice. In the United Kingdom, there were 80 chains to the mile, but until the early nineteenth century the Scottish and Irish customary miles were longer than the statute mile; consequently a Scots chain was about 74 (imperial) feet, an Irish chain 84 feet. These longer chains became obsolete following the adoption of the imperial system of units in 1824.
In India, "metric chains" of exactly 20 metres (65.62 feet) are used, along with fractions thereof. (Full article...)
Many tools like remote sensing, GIS and photogrammetry modelling have been developed to improve forest inventory and management planning. Since 1953, the volume of standing trees in the United States has increased by 90% due to sustainable forest management. (Full article...)
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A chainsaw (or chain saw) is a portable handheld powersaw that cuts with a set of teeth attached to a rotating chain driven along a guide bar.
Modern chainsaws are typically gasoline-, electric-, or battery-powered and are used in activities such as tree felling, limbing, bucking, pruning, cutting firebreaks in wildland fire suppression, harvesting of firewood, for use in chainsaw art and chainsaw mills, for cutting concrete, and cutting ice. Precursors to modern chainsaws were first used in surgery, with patents for wood chainsaws beginning in the late 19th century.
A chainsaw comprises an engine, a drive mechanism, a guide bar, a cutting chain, a tensioning mechanism, and safety features. Various safety practices and working techniques are used with chainsaws. (Full article...)
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Dendrology (Ancient Greek: δένδρον, dendron, "tree"; and Ancient Greek: -λογία, -logia, science of or study of) or xylology (Ancient Greek: ξύλον, ksulon, "wood") is the science and study of woody plants (trees, shrubs, and lianas), specifically, their taxonomic classifications. There is no sharp boundary between plant taxonomy and dendrology; woody plants not only belong to many different plant families, but these families may be made up of both woody and non-woody members. Some families include only a few woody species. Dendrology, as a discipline of industrial forestry, tends to focus on identification of economically useful woody plants and their taxonomic interrelationships. As an academic course of study, dendrology will include all woody plants, native and non-native, that occur in a region. A related discipline is the study of sylvics, which focuses on the autecology of genera and species.
In the past, dendrology included the study of the natural history of woody species in specific regions, but this aspect is now considered part of ecology. The field also plays a role in conserving rare or endangered species. (Full article...)
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John EvelynFRS (31 October 1620 – 27 February 1706) was an English writer, landowner, gardener, courtier and minor government official, who is now best known as a diarist. He was a founding Fellow of the Royal Society.
John Evelyn's diary, or memoir, spanned the period of his adult life from 1640, when he was a student, to 1706, the year he died. He did not write daily at all times. The many volumes provide insight into life and events at a time before regular magazines or newspapers were published, making diaries of greater interest to modern historians than such works might have been at later periods. Evelyn's work covers art, culture and politics, including the execution of Charles I, Oliver Cromwell's rise and eventual natural death, the last Great Plague of London, and the Great Fire of London in 1666.
John Evelyn's Diary was first published posthumously in 1818, but over the years was overshadowed by that of Samuel Pepys. Pepys wrote a different kind of diary, in the same era but covering a much shorter period, 1660–1669, and in much greater depth.
Among the many subjects Evelyn wrote about, gardening was an increasing obsession, and he left a huge manuscript on the subject that was not printed until 2001. He published several translations of French gardening books, and his Sylva, or A Discourse of Forest-Trees (1664) was highly influential in its plea to landowners to plant trees, of which he believed the country to be dangerously short. Sections from his main manuscript were added to editions of this, and also published separately. (Full article...)
Born into the wealthy Pinchot family, Gifford Pinchot embarked on a career in forestry after graduating from Yale University in 1889. President William McKinley appointed Pinchot as the head of the Division of Forestry in 1898, and Pinchot became the first chief of the U.S. Forest Service after it was established in 1905. Pinchot enjoyed a close relationship with President Theodore Roosevelt, who shared Pinchot's views regarding the importance of conservation. After William Howard Taft succeeded Roosevelt as president, Pinchot was at the center of the Pinchot–Ballinger controversy, a dispute with Secretary of the Interior Richard A. Ballinger that led to Pinchot's dismissal. The controversy contributed to the split of the Republican Party and the formation of the Progressive Party prior to the 1912 presidential election. Pinchot supported Roosevelt's Progressive candidacy, but Roosevelt was defeated by Democrat Woodrow Wilson.
A hand compass (also hand bearing compass or sighting compass) is a compact magnetic compass capable of one-hand use and fitted with a sighting device to record a precise bearing or azimuth to a given target or to determine a location. Hand or sighting compasses include instruments with simple notch-and-post alignment ("gunsights"), prismatic sights, direct or lensatic sights, and mirror/vee (reflected-image) sights. With the additional precision offered by the sighting arrangement, and depending upon construction, sighting compasses provide increased accuracy when measuring precise bearings to an objective.
The term hand compass is used by some in the forestry and surveying professions to refer to a certain type of hand compass optimized for use in those fields, also known as a forester or cruiser compass. A hand compass may also include the various one-hand or 'pocket' versions of the surveyor's or geologist's transit. (Full article...)
It has limited policing powers in protected forest areas to stop illegal poaching and logging, with the power to arrest suspects. (Full article...)
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Even-aged timber management is a group of forest management practices employed to achieve a nearly coeval cohort group of foresttrees. The practice of even-aged management is often pursued to minimize costs to loggers. In some cases, the practices of even aged timber management are frequently implicated in biodiversity loss and other ecological damage. Even-aged timber management can also be beneficial to restoring natural native species succession. (Full article...)
A controlled or prescribed (Rx) burn is the practice of intentionally setting a fire to change the assemblage of vegetation and decaying material in a landscape. The purpose could be for forest management, ecological restoration, land clearing or wildfire fuel management. A controlled burn may also refer to the intentional burning of slash and fuels through burn piles. Controlled burns may also be referred to as hazard reduction burning, backfire, swailing or a burn-off. In industrialized countries, controlled burning regulations and permits are usually overseen by fire control authorities.
Controlled burns are conducted during the cooler months to reduce fuel buildup and decrease the likelihood of more dangerous, hotter fires. Controlled burning stimulates the germination of some trees and reveals soil mineral layers which increases seedling vitality. In grasslands, controlled burns shift the species assemblage to primarily native grassland species. Some seeds, such as those of lodgepole pine, sequoia and many chaparral shrubs are pyriscent, meaning heat from fire causes the cone or woody husk to open and disperse seeds.
Fire is a natural part of both forest and grassland ecology and has been used by indigenous people across the world for millennia to promote biodiversity and cultivate wild crops. Colonial law in North America and Australia displaced indigenous people from lands that were controlled with fire and prohibited from conducting traditional controlled burns. After wildfires began increasing in scale and intensity in the 20th century, fire control authorities in began reintroducing controlled burns and indigenous leadership into land management. (Full article...)
Like most states of the African Sahel, Chad has suffered desertification—the encroachment of the desert. Traditional herding practices and the need for firewood and wood for construction have exacerbated the problem. In the early 1980s, the country possessed between 135,000 and 160,000 square kilometres of forest and woodlands, representing a decline of almost 14% from the early 1960s. To what extent this decline was caused by climatic changes and to what extent by herding and cutting practices is unknown. Regulation was difficult because some people traditionally made their living selling wood and charcoal for fuel and wood for construction to people in the urban center. Although the government attempted to limit wood brought into the capital, the attempts have not been well managed, and unrestricted cutting of woodlands remained a problem. (Full article...)
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An increment borer is a specialized tool used to extract a section of wood tissue from a living tree with relatively minor injury to the plant itself. The tool consists of a handle, an auger bit and a small, half circular metal tray ( the core extractor) that fits into the auger bit; the last is usually manufactured from carbide steel. It is most often used by foresters, researchers and scientists to determine the age of a tree. This science is also called dendrochronology. The operation enables the user to count the rings in the core sample, to reveal the age of the tree being examined and its growth rate. After use the tool breaks down: auger bit and extractor fit within the handle, making it highly compact and easy to carry. (Full article...)
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The European Arboricultural Council (EAC) based in Bad Honnef, Germany is a forum where delegates from a wide range of arboricultural organizations throughout Europe meet. The goal of the EAC is to elevate the status and to raise the professional level of competence within arboriculture. This objective is carried out by liaising on matters ranging from research and education to successful tree establishment and the improvement of safe working practices. (Full article...)
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In the late nineteenth century, about 30% of Ethiopia was covered with forest. The clearing of land for agricultural use and the cutting of trees for fuel gradually changed the scene, and today forest areas have dwindled to less than 4% of Ethiopia's total land. The northern parts of the highlands are almost devoid of trees. However, about 45,000 square kilometres of dense forest exist in the southern and southwestern sections of the highlands. Some of these include coniferous forests, found at elevations above 1,600 meters, but a majority of the forestland consists primarily of woodlands found in drier areas of the highlands and in the drier areas bordering the highlands.
Lumber from the coniferous forests is important to the construction industry. The broadleaf evergreen forests furnish timber that is used in construction and in the production of plywood. The woodlands are a major source of firewood and charcoal. Certain trees --boswellia and species of commiphora—are of special economic significance. Both grow in the arid lowlands and produce gums that are the bases for frankincense and myrrh. A species of acacia found in several parts of the country is a source of gum arabic used in the manufacture of adhesives, pharmaceutical products, and confectionery. The eucalyptus, an exotic tree introduced in the late nineteenth century and grown mainly near urban areas, is a valuable source of telephone and telegraph poles, tool handles, furniture, and firewood. It is also a major source of the material from which fiberboard and particleboard are made.
Data on forestry's contribution to the economy are not readily available, largely because most GDP tables aggregate data on forestry, fishing, and hunting. In 1980/81 forestry accounted for 2.5% of GDP at constant 1960/61 factor cost and 5.4% of the share attributable to the agricultural sector.
Before 1974 about half of the forestland was privately owned or claimed, and roughly half was held by the government. There was little government control of forestry operations prior to the Ethiopian revolution. The 1975 land reform nationalized forestland and sawmills, which existed mostly in the south. The government controlled harvesting of forestland, and in some cases individuals had to secure permits from local peasant associations to cut trees. But this measure encouraged illegal logging and accelerated the destruction of Ethiopia's remaining forests. To ensure that conservation activity conformed with government policy and directives on land use, reforestation programs were organized through the Ministry of Agriculture and Rural Development or district offices that planned, coordinated, and monitored all work. The local peasant associations lacked decision-making authority. (Full article...)
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Ecoforestry has been defined as selection forestry or restoration forestry. The main idea of ecoforestry is to maintain or restore the forest to standards where the forest may still be harvested for products on a sustainable basis. Ecoforestry is forestry that emphasizes holistic practices which strive to protect and restore ecosystems rather than maximize economic productivity. Sustainability of the forest also comes with uncertainties. There are other factors that may affect the forest furthermore than that of the harvesting. There are internal conditions such as effects of soil compaction, tree damage, disease, fire, and blow down that also directly affect the ecosystem. These factors have to be taken into account when determining the sustainability of a forest. If these factors are added to the harvesting and production that comes out of the forest, then the forest will become less likely to survive, and will then become less sustainable.
Since the forest is considered an ecosystem, it is dependent on all of the living and non-living factors within itself. This is a major part of why the forest needs to be sustainable before it is harvested. For example, a tree, by way of photosynthesis, converts sunlight to sugars for respiration to keep the tree alive. The remains of the converted sugars is left in roots for consumption by the organisms surrounding the tree in the habitat. This shows the productivity of an ecosystem with its inhabitants. Productivity within the ecosystem cannot come to fruition unless the forest is sustainable enough to be harvested. If most individual organisms of the ecosystem vanish, the ecosystem itself is at risk. Once that happens, there is no longer any forest to harvest from. The overall productivity of a system can be found in an equation where the Net Primary Production, or NPP, is equal to the Gross Primary Production, or GPP, minus the Respiration, or R. The formula is the NPP = GPP - R. The NPP is the overall efficiency of the plants in the ecosystem. Through having a constant efficiency in NPP, the ecosystem is then more sustainable. The GPP refers to the rate of energy stored by photosynthesis in plants. The R refers to the maintenance and reproduction of plants from the energy expended.
Ecoforestry has many principles within the existence of itself. It covers sustainable development and the fair harvesting of the organisms living within the forest ecosystem. There have been many proposals of principles outlined for ecoforestry. They are covered over books, articles, and environmental agencies. All of the principles relate to the idea that in ecoforestry, less should be harvested, and diversity must be managed. Through harvesting less, there is enough biomass left in the forest, so that the forest may stay healthy and still stay maintained. It will grow at a sustainable level annually, and thus it will be able to still be harvested the following year. Through management of the diversity, species may cohabitate in an ecosystem where the forest may feed off of other species in its growth and production. The Principles of Ecoforestry may be found below. (Full article...)
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The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radio navigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite systems (GNSS) that provide geolocation and time information to a GPS receiver anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. It does not require the user to transmit any data, and operates independently of any telephone or Internet reception, though these technologies can enhance the usefulness of the GPS positioning information. It provides critical positioning capabilities to military, civil, and commercial users around the world. Although the United States government created, controls and maintains the GPS system, it is freely accessible to anyone with a GPS receiver. (Full article...)
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The climate and ecology of different locations on the globe naturally separate into life zones, depending on elevation, location, and latitude. The generally strong dependency on elevation is known as altitudinal zonation: the average temperature of a location decreases as the elevation increases.
The general effect of elevation depends on atmospheric physics. However, the specific climate and ecology of any particular location depends on specific features of that location. This article provides a list of life zones by region, in order to illustrate the features of life zones for regions around the globe. (Full article...)
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The Scheduled Tribes and Other Traditional Forest Dwellers (Recognition of Forest Rights) Act, 2006, is a key piece of forest legislation passed in India on 18 December 2006. It has also been called the Forest Rights Act, the Tribal Rights Act, the Tribal Bill, and the Tribal Land Act. The law concerns the rights of forest-dwelling communities to land and other resources, denied to them over decades as a result of the continuance of colonial forest laws in India.
Supporters of the Act claim that it will redress the "historical injustice" committed against forest dwellers, while including provisions for making conservation more effective and more transparent. The demand for the law has seen massive national demonstrations involving hundreds of thousands of people.
However, the law has also been the subject of considerable controversy in India. Opponents of the law claim it will lead to massive forest destruction and should be repealed.
A little over one year after it was passed, the Act was notified into force on 31 December 2007. On 1 January 2008, this was followed by the notification of the Rules framed by the Ministry of Tribal Affairs to supplement the procedural aspects of the Act. (Full article...)
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Drywall (also called plasterboard, dry lining, wallboard, sheet rock, gib board, gypsum board, buster board, turtles board, slap board, custard board, and gypsum panel) is a panel made of calcium sulfatedihydrate (gypsum), with or without additives, typically extruded between thick sheets of facer and backer paper, used in the construction of interior walls and ceilings. The plaster is mixed with fiber (typically paper, glass wool, or a combination of these materials); plasticizer, foaming agent; and additives that can reduce mildew, flammability, and water absorption.
In the mid-20th century, drywall construction became prevalent in North America as a time- and labor-saving alternative to lath and plaster. (Full article...)
Agroforestry can be practiced for economic, environmental, and social benefits, and can be part of sustainable agriculture. Apart from production, benefits from agroforestry include improved farm productivity, healthier environments, reduction of risk for farmers, beauty and aesthetics, increased farm profits, reduced soil erosion, creating wildlife habitat, less pollution, managing animal waste, increased biodiversity, improved soil structure, and carbon sequestration.
Agroforestry practices are especially prevalent in the tropics, especially in subsistence smallholdings areas, with particular importance in sub-Saharan Africa. Due to its multiple benefits, for instance in nutrient cycle benefits and potential for mitigating droughts, it has been adopted in the USA and Europe. (Full article...)
Brazil is currently developing very fast rate, only out-performed by countries such as China and India, both in terms of economic growth and its recovery rate after the global financial crisis in the late 2000s.
The saying that “Brazil is the country of the future...and it always will be” has haunted Brazil for decades. But economic policy changes made since the founding of the New Republic have allowed Brazil to gain international confidence. American President Barack Obama stated that “The people of Brazil should know that the future has arrived” during a visit to Rio de Janeiro in March 2011. Brazil is no longer referred to as a developing country, but as an emerging country, a newly industrialised country (NIC) and a member of the BRIC economies. But with this growth rate comes huge responsibility in terms of sustainability. Brazil's economic growth is supported by the huge demand for natural resources from China, resources that Brazil has in abundance. Brazil is currently successfully matching the needs of China's manufacturing industry and with huge investments currently being made to sustain this demand from China, Brazil is building new ports and airports and increasing the capacity of its current ones.
The extraction of natural resources is coming at a price for the natural environment. Former Environment Minister Marina Silva resigned in 2008 as she felt the Brazilian government was prioritizing the interests of big businesses and the economy, and felt she was fighting a losing battle to protect l Brazil's environment, including the Amazon rainforest.
Despite these claims, Brazil has been praised for its environmental sustainability efforts and attempts to reduce its carbon emissions. The Brazilian government created the Ministry of the Environment (MMA) in 1985 and following this, organisations such as IBAMA, created in 1989, work to protect the natural environment. Brazil has also taken a front seat with regards to global environmental governance by jointly creating and presiding over the Megadiverse Like-Minded Countries Group, which includes 70% of the world's living biodiversity and 45% of the world's population. (Full article...)
It was established to represent forestry and wood-using businesses, from nurseries and growers, to wood processing end-users. It was created to represent the views of the industry to the Forestry Commission and the policy makers within the relevant legislatures and executives. (Full article...)
The dumb gulper shark (Centrophorus harrissoni) is a rare and endangered deepwater dogfish, found along the east coast of Australia and in isolated spots north and west of New Zealand. It is also known as the dumb shark, Harrison's deep-sea dogfish, or Harrison's dogfish. (Full article...)
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The puffadder shyshark (Haploblepharus edwardsii), also known as the Happy Eddie, is a species of catshark, belonging to the familyScyliorhinidae, endemic to the temperate waters off the coast of South Africa. This common shark is found on or near the bottom in sandy or rocky habitats, from the intertidal zone to a depth of 130 m (430 ft). Typically reaching 60 cm (24 in) in length, the puffadder shyshark has a slender, flattened body and head. It is strikingly patterned with a series of dark-edged, bright orange "saddles" and numerous small white spots over its back. The Natal shyshark (H. kistnasamyi), formally described in 2006, was once considered to be an alternate form of the puffadder shyshark.
When threatened, the puffadder shyshark (and other members of its genus) curls into a circle with its tail covering its eyes, giving rise to the local names "shyshark" and "doughnut". It is a predator that feeds mainly on crustaceans, polychaete worms, and small bony fishes. This shark is oviparous and females deposit egg capsules singly or in pairs onto underwater structures. Harmless to humans, the puffadder shyshark is usually discarded by commercial and recreational fishers alike for its small size. It has been assessed as endangered by the International Union for Conservation of Nature (IUCN), as its entire population is located within a limited area and could be affected by a local increase in fishing pressure or habitat degradation. (Full article...)
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Orectolobus hutchinsi, the western wobbegong, is a species of carpet shark in the familyOrectolobidae. The western wobbegong shark is a moderate sized marine shark found off the coast of Western Australia. Its scientific name is Orectolobus hutchinsi, and it was first identified in 1983 by Dr. Barry Hutchins, but was only recently classified, described, and published in 2006. O. hutchinsi is found on the shallow continental shelf in Western Australia from Coral Bay to Groper Bluff. This species is distinct from other wobbegong sharks because the western wobbegong shark has a yellowish brown upper body and darker brown saddles on their backs. Unlike other wobbegong sharks from the same area, the western wobbegong shark does not have white rings or blotches on their backs. (Full article...)
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The bullhead sharks are members of the genus Heterodontus, the only members of the family Heterodontidae and only living members of the order Heterodontiformes. All are relatively small, with the largest species reaching just 1.65 metres (5.5 ft) in maximum length. They are bottom feeders in tropical and subtropical waters.
The Heterodontiforms appear in the fossil record in the Early Jurassic. The oldest fossils of the modern genus date to the Late Jurassic. Despite the very ancient origins of this genus and its abundance in the fossil record, phylogenetic evidence indicates that all extant species in the genus arose from a single common ancestor that survived the Cretaceous-Paleogene extinction, with diversification into modern species only starting around the mid-Eocene. (Full article...)
The silvertip shark (Carcharhinus albimarginatus) is a large species of requiem shark, in the familyCarcharhinidae, with a fragmented distribution throughout the tropicalIndian and Pacific Oceans. It is often encountered around offshore islands and coral reefs, and has been known to dive to a depth of 800 m (2,600 ft). The silvertip shark resembles a larger and bulkier grey reef shark (C. amblyrhynchos), but can be easily identified by the prominent white margins on its fins. It attains a maximum length of 3 m (10 ft).
An aggressive, powerful apex predator, the silvertip shark feeds on a wide variety of bony fishes, as well as eagle rays, smaller sharks, and cephalopods. This species dominates other requiem sharks of equal size when competing for food, and larger individuals are often heavily scarred from conflicts with others of its species. As with other members of its family, the silvertip shark is viviparous, with females giving birth to one to 11 pups in the summer. Silvertip sharks are regarded as potentially dangerous to humans, as they often approach divers quite closely. This slow-reproducing species is taken by commercial fisheries for its meat, fins, skin, cartilage, and jaws and teeth, which has apparently led to local population declines or extirpations. (Full article...)
The blackspot shark (Carcharhinus sealei) is a small species of requiem shark in the family Carcharhinidae found in the tropical Indo-West Pacific Ocean between latitudes 24°N and 30°S, from the surface to a depth around 40 m (130 ft). Its length is a little under one meter (yard) and it is not considered to be dangerous to humans. It feeds mainly on fish, crustaceans, and squid. This shark is also caught in small-scale fisheries for human consumption. (Full article...)
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The broadfin sawtail catshark (Galeus nipponensis) is a common species of catshark, part of the familyScyliorhinidae. It is found on or near the bottom at depths of 150–540 m (490–1,770 ft), from southeastern Japan to the East China Sea. A slender species growing to 68 cm (27 in) long, this shark is characterized by a fairly long, pointed snout, a series of indistinct, dark saddles along its back and tail, and a prominent crest of enlarged dermal denticles along the dorsal edge of its caudal fin. In addition, adult males have very long claspers that reach past the anal fin. The broadfin sawtail catshark is an opportunistic predator of bony fishes, cephalopods, and crustaceans, with immature and mature sharks being primarily piscivorous. It is oviparous and reproduces year-round. (Full article...)
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The dwarf sawtail catshark (Galeus schultzi) is a little-known species of catshark, belonging to the familyScyliorhinidae, found exclusively in the deep waters off Luzon in the Philippines. Unlike other members of its genus, this slender, diminutive shark has a short, rounded snout and very short furrows at the corners of its jaws. It has indistinct darker saddles beneath each dorsal fin and two dark bands on the caudal fin, as well as a prominent crest of enlarged dermal denticles along the upper caudal fin margin. (Full article...)
Little is known about the whitespotted bullhead shark. It is found on the outer continental shelf and is thought to feed on crabs, based on the gut contents of two specimen. As a member of the genus Heterodontus, it is thought to be oviparous, but egg case of this species have never been seen. (Full article...)
The milk shark (Rhizoprionodon acutus) is a species of requiem shark, and part of the familyCarcharhinidae, whose common name comes from an Indian belief that consumption of its meat promotes lactation. The largest and most widely distributed member of its genus, the milk shark typically measures 1.1 m (3.6 ft) long, and can be found in coastal tropical waters throughout the eastern Atlantic and the Indo-Pacific regions. Occurring from the surface to a depth of 200 m (660 ft), this species is common near beaches and in estuaries, and has been recorded swimming up rivers in Cambodia. Juveniles are known to inhabit tidal pools and seagrass meadows. The milk shark has a slender body with a long, pointed snout and large eyes, and is a nondescript gray above and white below. This shark can be distinguished from similar species in its range by the long furrows at the corners of its mouth, and seven to 15 enlarged pores just above them.
The peppered catshark (Galeus piperatus) is a common but little-known species of catshark, part of the familyScyliorhinidae, inhabiting depths of 130–1,326 m (427–4,350 ft) in the northern Gulf of California. It is found on or near the ocean floor, and conducts seasonal migrations, spending winter in deeper water. Reaching a length of 37 cm (15 in), this species has a slender grayish body with a fine covering of black dots. On the dorsal edge of its caudal fin is a prominent crest of enlarged dermal denticles. It is oviparous, with the reproductive period probably lasting from May to September. The International Union for Conservation of Nature (IUCN) has listed the peppered catshark under Least Concern, as it faces no significant threats from human activity. (Full article...)
While these common names may apply to several species, Squalus acanthias is distinguished by two spines (one anterior to each dorsal fin) and no anal fin. It lives in shallow waters and further offshore in most parts of the world, especially in temperate waters. Those in the northern Pacific Ocean were reevaluated in 2010 and found to constitute a separate species, now called the Pacific spiny dogfish (Squalus suckleyi). (Full article...)
The Oman bullhead shark, Heterodontus omanensis, is a bullhead shark of the family Heterodontidae found in the tropical western Indian Ocean around central Oman, from the surface to a depth of 72 m (236 ft) on the continental shelf. This species has an average length of 56 cm (22 in) and can reach a maximum length of 61 cm (24 in). This shark was described in 2005, making it one of the most recently described of its genus. The Oman bullhead shark likely is accidentally caught as bycatch, putting the species at risk. (Full article...)
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The Pondicherry shark (Carcharhinus hemiodon) is an extremely rare species of requiem shark, in the family Carcharhinidae. A small and stocky gray shark, it grows not much longer than 1 m (3.3 ft) and has a fairly long, pointed snout. This species can be identified by the shape of its upper teeth, which are strongly serrated near the base and smooth-edged near the tip, and by its first dorsal fin, which is large with a long free rear tip. Furthermore, this shark has prominent black tips on its pectoral fins, second dorsal fin, and caudal fin lower lobe.
The Pondicherry shark is critically endangered. It was once found throughout Indo-Pacific coastal waters from the Gulf of Oman to New Guinea, and is known to enter fresh water. Fewer than 20 specimens are available for study, and most aspects of its natural history are unknown. It probably feeds on bony fishes, cephalopods, and crustaceans, and gives birth to live young with the embryos forming a placental connection to their mother. While the International Union for Conservation of Nature (IUCN) has listed the Pondicherry shark as Critically endangered, it had been thought to be extinct since the 1970s. It is probably threatened by intense and escalating fishing pressure throughout its range. The shark is among the 25 "most wanted lost" species that are the focus of Global Wildlife Conservation's "Search for Lost Species" initiative. The Pondicherry has been spotted in rivers in India in the late 2010s. A Pondicherry shark was caught in the Menik Ganga (river) in SE Sri Lanka in 2011. It was photographed and released alive. (Full article...)
The whiskery shark (Furgaleus macki) is a species of houndshark in the family Triakidae, and the only member of its genus. This common shark inhabits the Australiancontinental shelf from Western Australia to the Bass Strait, to a depth of 220 m (720 ft). It is demersal in habits and prefers rocky and vegetated habitats. Stout-bodied and almost "humpbacked" in form, the whiskery shark can be distinguished from all other members of its family by the presence of long nasal barbels. Its two moderately large dorsal fins are roughly equal in size. It is brownish gray above and lighter below, with a pattern of darker saddles and blotches in younger sharks. This species reaches 1.6 m (5.2 ft) in length.
The diet of the whiskery shark consists almost entirely of octopuses. It is viviparous; females bear litters of four to 28 pups every other year from August to October, after a gestation period of 7–9 months. This harmless shark is used for its meat, being one of the species marketed as "flake" in Australia. It is mainly caught by a Western Australian commercialgillnetfishery. Its numbers declined significantly from overfishing in the 1970s and early 1980s, leading to the introduction of new management measures in the mid-1980s. Since then, strict fishery management has kept the whiskery shark population stable or increasing, resulting in its listing as of least concern by the International Union for Conservation of Nature. (Full article...)
The Borneo shark (Carcharhinus borneensis) is a species of requiem shark, and part of the family Carcharhinidae. Extremely rare, it is known only from inshore waters around Mukah in northwestern Borneo, though it may once have been more widely distributed. A small, gray shark reaching 65 cm (26 in) in length, this species is the only member of its genus with a row of enlarged pores above the corners of its mouth. It has a slender body with a long, pointed snout and a low second dorsal fin placed posterior to the anal fin origin.
Almost nothing is known about the natural history of the Borneo shark. It is viviparous like other requiem sharks; the females bear litters of six pups, which are provisioned through gestation by a placental connection. The International Union for Conservation of Nature last assessed this species as Critically Endangered. While an extant population has since been found, the Borneo shark continues to merit conservation concern given its highly limited range within heavily fished waters. (Full article...)
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The cobbler wobbegong, Sutorectus tentaculatus, is a carpet shark in the familyOrectolobidae, the only member of the genusSutorectus. It is found in the subtropical eastern Indian Ocean around Western Australia between latitudes 26° S and 35° S. It is frequently found in rocky and coral reef areas. Cobbler wobbegongs reach a length of 92 cm. It has unbranched dermal lobes on the head, rows of warty tubercles along the back and black spots on the body and fins.
Hemiscyllium halmahera, or the Halmahera epaulette shark, is a species of bamboo shark from Indonesia. This species is described from two specimens collected near Ternate island in 2013, off the coast of larger Halmahera island. This species is most similar to Hemiscyllium galei, found in West Papua, but looks strikingly different in its pattern of spots. While H. galei has seven large, dark spots on each side of its body, H. halmahera has a brown color with clusters of brown or white spots in polygon configurations all over its body. These small sharks are like other bamboo sharks, in that they use their pectoral fins to "walk" along the ocean floor. (Full article...)
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The Arabian catshark (Bythaelurus alcockii) is a catshark of the familyScyliorhinidae. It can grow up to 30 centimetres (12 in) long, and lives in open seas. It is only known from a single specimen, now lost, which was found on the continental slope of the Arabian Sea. (Full article...)
The cloudy catshark (Scyliorhinus torazame) is a common species of catshark, belonging to the familyScyliorhinidae. It is a bottom-dweller that inhabits rocky reefs in the northwestern Pacific Ocean, from the shore to a depth of 320 m (1,050 ft). Growing up to 50 cm (20 in) long, this small, slim shark has a narrow head with a short blunt snout, no grooves between the nostrils and mouth, and furrows on the lower but not the upper jaw. It is also characterized by extremely rough skin and coloration consisting of a series of dark brown saddles along its back and tail, along with various darker and lighter spots in larger individuals.
The salamander shark or salamander catshark (Parmaturus pilosus) is a little known catshark that inhabits a range from Japan and the East China Sea, on the upper to middle continental slope at depths of 358–895 m. Specimens of this species can attain a total length of at least 64 cm. This catshark is a potential bycatch of trawl fisheries operating within its range, but no details are available. There are high levels of squalene in this catshark's liver. The reproduction of this catshark is oviparous. (Full article...)
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The Brazilian sharpnose shark (Rhizoprionodon lalandii) is a requiem shark of the familyCarcharhinidae. It is found in the tropical waters of the western Atlantic Ocean between latitudes 13° N and 33° S, at depths between 3 and 70 m; it has been recorded in the following countries Aruba, Brazil, Colombia, French Guiana, Guyana, Panama, Suriname, Trinidad and Tobago and Venezuela. It can reach a length of 77 cm. It is considered Vulnerable in Brazil due to intensive fishing although it may actually classify at a higher level. The flesh is eaten for food but the fins are not used as they are too small. Other threats include water pollution from plastic litter and three specimens have been found with plastic collars on their head or gills. The shark feeds on teleostei and squid. Research showed the shark may be an important predator of demersal and pelagic prey. (Full article...)
The Brazilian sharpnose shark (Rhizoprionodon lalandii) is a requiem shark of the familyCarcharhinidae. It is found in the tropical waters of the western Atlantic Ocean between latitudes 13° N and 33° S, at depths between 3 and 70 m; it has been recorded in the following countries Aruba, Brazil, Colombia, French Guiana, Guyana, Panama, Suriname, Trinidad and Tobago and Venezuela. It can reach a length of 77 cm. It is considered Vulnerable in Brazil due to intensive fishing although it may actually classify at a higher level. The flesh is eaten for food but the fins are not used as they are too small. Other threats include water pollution from plastic litter and three specimens have been found with plastic collars on their head or gills. The shark feeds on teleostei and squid. Research showed the shark may be an important predator of demersal and pelagic prey. (Full article...)
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The black dogfish (Centroscyllium fabricii) is a species of dogfish shark in the familyEtmopteridae. It is common over the outer continental shelf and continental slope at depths of 180–2,250 m (590–7,380 ft). Females generally inhabit deeper water than males, and depending on the region, smaller sharks may occur at different depths than larger ones. This species is distributed widely in the Atlantic Ocean, from Greenland and Iceland to Virginia and West Africa in the north, and off southwestern Africa and Argentina in the south. The largest member of its family, the black dogfish, typically measures 60–75 cm (24–30 in) long. It has a stocky, dark brown body that is darker below than above, and bears scattered, minute bioluminescent organs. Its two dorsal fins are preceded by stout spines, and the anal fin is absent.
The viper dogfish or viper shark (Trigonognathus kabeyai) is a rare species of dogfish shark in the familyEtmopteridae, and the only extant member of its genus. It has been found in the Pacific Ocean off southern Japan, the Bonin Islands, Pacific Ocean off northern Taitung County and the Northwestern Hawaiian Islands. This species inhabits upper continental slopes and seamounts. It may migrate vertically, shifting between bottom waters 270–360 m (890–1,180 ft) deep during the day and upper waters less than 150 m (490 ft) deep at night. A slender, black shark reaching 54 cm (21 in) in length, the viper dogfish can be recognized by its narrow, triangular jaws and well-spaced, fang-like teeth. It also has two spined dorsal fins, dermal denticles with faceted crowns, and numerous light-emitting photophores concentrated on its ventral surface.
Feeding mainly on bony fishes, the viper dogfish captures prey by protruding its jaws and impaling them with its teeth. Its impressive gape allows it to swallow relatively large fish whole. The skeletal and muscular structure of its head shows unique features that support this feeding mechanism, which is unlike that of other dogfish sharks. This shark gives birth to live young, which are nourished by yolk during gestation; the litter size is probably fewer than 26 pups. Small numbers of viper dogfish are caught incidentally in purse seines and bottom trawls. (Full article...)
The dusky snout catshark (Bythaelurus naylori) is a catshark of the familyScyliorhinidae. This species is found from the Southwest Indian Ridge, southwestern Indian Ocean. The specimens were collected from 89–1,443 m depth in both bottom trawls and midwater trawls. The shallowest catch record of the new species, possibly at 89 m, came from a midwater trawl. This species can be distinguished from its two closest congeners, B. giddingsi and B. lutarius, by a combination of prominent comb-like dermal denticles along the upper caudal-fin margin, absence of oral papillae, uniform body coloration, and noticeable dark dusky snout; Bythaelurus giddingsi has oral papillae present and a variegated color pattern, while B. lutarius lacks a caudal crest of enlarged denticles and matures at a much smaller size than the new species. (Full article...)
The largetooth cookiecutter shark (Isistius plutodus) is a rare species of squaliform shark in the familyDalatiidae, reported from depths of 60–200 m (200–660 ft) at scattered locations in the Atlantic and Pacific Oceans. As its common name suggests, it is similar in appearance to the cookiecutter shark (I. brasiliensis) but has much larger lower teeth. This species reaches a maximum known length of 42 cm (17 in). The largetooth cookiecutter shark feeds by gouging out chunks of flesh from larger animals, including bony fishes, sharks, and marine mammals, and is able to take larger bites than I. brasiliensis. Little is known of its life history; it is thought to be a weaker swimmer than I. brasiliensis, and is presumably aplacental viviparous like the rest of its family. This shark is an infrequent bycatch of commercial trawl and longlinefisheries, but is not thought to be much threatened by these activities. (Full article...)
Colbún Lake (Spanish: Lago Colbún) is a reservoir in the Maule Region in Chile, straddling the provinces of Talca (comuna of San Clemente) and Linares (comuna de Colbún). Located 48 km southeast of the city of Talca, the regional capital and 35 km northeast of the city of Linares and with an area of 5,700 hectares and a capacity of 1,490,000 m³, it is the largest artificial reservoir in Chile. The lake lies at an altitude of 440 metres above sea level.
Buhisan Dam is a dam located in Buhisan, Cebu City, Philippines. It is one of the main source of water for Cebu City and Metro Cebu. Part of Central Cebu Protected Landscape, Buhisan Dam is situated in the mountains of Barangay Buhisan behind Labangon, Cebu. Built in 1911-1912 and maintained by the Metro Cebu Water District, it is being developed into an eco-tourism location. It supplies five percent of Metropolitan Cebu Water District's (MCWD) current water capacity. (Full article...)
This dam was built on the Gondang River in Wonorejo Village using a loan from OECF of ¥ 14.954 billion.
As a result of sedimentation, in 2011, the total capacity of the reservoir formed as a result of the construction of this dam is estimated to remain at 107.2 million cubic meters, with an active capacity of 97 million cubic meters and an inactive capacity of 10.1 million cubic meters. (Full article...)
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Glomfjord power plant is a hydroelectric power plant in the village of Glomfjord in the municipality of Meløy in Nordland county, Norway. It gets its water from Nedre Navervatn lake which is located about 465 metres (1,526 ft) above sea level. The plant also house a newer 2.4MW Francis generator taking water from Fykanvatn lake as well. The outlet of the plant is the Glomfjorden and then the Norwegian Sea.
The Nampho Dam or West Sea Dam, also known as the West Sea Barrage or West Sea Lock Gate,[a] is a tidal barrage located 15 km west of the special city of Nampho, North Korea. It is a large, eight-km-long system of dams, three lock chambers, and 36 sluices, allowing the passage of ships up to 50,000 tons. The dam closes the estuary of the Taedong River off from the Yellow Sea. It was built by the North Korean Army from 1981 to 1986, with the resources of the whole country directed to this main construction project. The West Sea Barrage Line runs over the dam.
The stated goal of the dam was:
The prevention of seawater intrusion into the fresh water, thus solving the water supply problem;
The irrigation of additional land, enlarging the arable territory of the region.
The dam is considered a major accomplishment of North Korea, and is a commonly seen backdrop for North Korean television news broadcasts from Korean Central News Agency. It is also a popular stop for tour groups of international tourists, for whom there is a visitor centre on P'i Do Island where films are shown about the construction of the dam and the locks.
The dam's estimated total cost was US$4 billion. (Full article...)
It uses water provided by five reservoirs high up in the Papenoo Valley, above the commune. Each reservoir is created on the Papenoo River or a tributary by an embankment dam. From highest in elevation to lowest; Vaitapaa Dam at , which lies at an elevation of 411 m (1,348 ft) above sea level, is 15 m (49 ft) tall. It withholds a reservoir of 8,000 m3 (6.5 acre⋅ft). Next, at an elevation of 400 m (1,300 ft), Tahinu Dam, at is 33 m (108 ft) high and withholds a larger reservoir of 1,500,000 m3 (1,200 acre⋅ft). It is the tallest dam in Tahiti. Moving down is Vainavenave Dam at which lies at 399 m (1,309 ft) above sea level, is 29 m (95 ft) tall, and withholds a reservoir of 150,000 m3 (120 acre⋅ft). Fourth down the valley is the Vaituoru Dam at an elevation of 200 m (660 ft) with a reservoir capacity of 100,000 m3 (81 acre⋅ft). It is located at . Finally is the Tevaiohiro Dam at 85 m (279 ft) above sea level with a reservoir volume of 150,000 m3 (120 acre⋅ft). It is located at .
Water from the reservoirs is sent to three separate power stations via 25.5 km (15.8 mi) of penstock. The power station highest in elevation, Papenoo 1 contains four 4 MW Pelton-turbine-generators and is located at . Next downstream is Papenoo 2 at which contains one 4 MW Pelton turbine-generators. Lastly, Papenoo 3 contains two 4 MW Pelton turbine-generators and is located at . (Full article...)
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The Lower Se San 2 Dam (also: Lower Sesan 2 Dam and Han Se San 2 Dam) is a hydroelectric dam under development on the Se San River in Stung Treng Province, northeastern Cambodia. The Se San River is a major tributary of the Mekong River. The dam site is located 25 kilometres (16 mi) east of the provincial capital, also named Stung Treng. The first turbine began producing electricity in November 2017. The dam was officially opened on December 18, 2018. (Full article...)
The construction of the dam began in 1974 and was completed in 1979. Power is generated by fourteen Kaplanturbines, totaling the installed capacity to 1,890 MW (2,530,000 hp). The dam passes approximately 64,000 cubic metres (2,300,000 cu ft) of water per second, compared to the current average flow of the Uruguay River at 4,622 cubic metres (163,200 cu ft). The reservoir has a total area of 783 square kilometres (302 sq mi), while its maximum dimensions are 140 by 9 kilometres (87.0 mi × 5.6 mi). (Full article...)
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Hub Dam (Urdu: حب ڈیم ) is a reservoir on the Hub River. It is situated 56 km from Karachi city in Karachi and Hub District on Sindh and Balochistan provinces border. The dam is extended to 24300 acres with gross storage capacity of 857000 acre feet. It is Pakistan's fifth-largest dam. It is an important source that provides the drinking water to the metropolitan city Karachi.
In 1974, the government of Sindh declared the area around dam as a wildlife sanctuary. The sanctuary is about 27219 hectors in size. It is favorable area for feeding and nesting for Cranes, Pelicans, Ducks and Waders. It also an important habitat of migratory birds. The Dam was designated a Ramsar site on 1 May 2001.
Hub Dam is also a tourist resort. On weekend holidays many people from Karachi visit to enjoy picnics, swimming and fishing. A rest house of WAPDA is also located there for tourists stay.
In August 2018, Wapda to enhance Hub Dam's storage capacity and to set up small hydroelectric power project at the dam but due to negligence no ground work have started yet as of August 2020. (Full article...)
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The Al-Wehda Dam (سد الوحدة, Sadd Al-Weḥda, Unity Dam), formerly known as Maqarin Dam, is a 110 m (360 ft) roller-compacted concretegravity dam on the Yarmouk River on the border between Syria and Jordan. It can hold up to 115,000,000 m3 (93,000 acre⋅ft) water and is designed to provide Jordan with water for both human consumption and agriculture. Water from the reservoir is diverted through a diversion weir at Addassiyah downstream of the Al-Wehda dam to the King Abdullah Canal where it is mixed with other freshwater sources. Some of the water from the canal is then pumped to Amman to be used as drinking water, after being treated in the Zai water treatment plant. The discharge of effluents from adjacent agricultural lands has caused algae growth and eutrophication especially in spring. Construction was funded by the Arab Fund for Economic and Social Development (80%), the Abu Dhabi Development Fund (10%) and the Government of Jordan (10%). In February 2004 King Abdullah II of Jordan and Syrian President Bashar al-Assad launched the construction of the dam. Turkey's Ozaltin Company constructed 60 per cent of the dam, while the remaining 40 per cent were carried out by Marwan Alkurdi Company and the National Company for Roads and Bridges.
The sharing of the waters of the Yarmouk River between the two countries is governed by a 1987 treaty that set up a Jordanian-Syrian Yarmouk River Basin Higher Committee. The agreement was renewed in 2001 when the design of the dam was modified, reducing the storage capacity from 480 to 115 million cubic meters, and removing a hydropower plant that had initially been foreseen from the plans. According to a statement made by the Jordanian Minister of Water and Irrigation, Mousa Jamani, in April 2012 Syria violates the water sharing agreement, because Syrian farmers downstream of the dam use more than the 6 million cubic meters per year that they are entitled to for irrigation along the riverbank. The Minister also said that "since the agreement was signed, the number of Syrian dams increased from 26 to 48, while around 3,500 wells were drilled to pump water from the river basin", thus decreasing the amount of water flowing into the dam's reservoir. Until the 1960s, the Yarmouk River’s flow used to reach 16 cubic meters per second, but has since dropped to only one cubic meter per second. (Full article...)
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The Unbong Dam, or Yunfeng Dam, is a concrete gravity dam on the Yalu River which borders China and North Korea. It is located 33 km (21 mi) northeast of Ji'an in Jilin Province, China and Chasŏng in Chagang Province, North Korea. The primary purpose of the dam is hydroelectric power generation and it supports a 400 MW power station. Construction of the dam had initially began in August 1942 but was halted in 1945 after the surrender of Japan ending World War II. In October 1959, construction on the dam recommenced and in September 1965, the first of the four 100 MW Francis turbine-generators was operational. The last generator was operational on 4 April 1967. The 113.75 m (373 ft) tall dam creates a reservoir with a storage capacity of 3,895,000,000 m3 (3,157,728 acre⋅ft). The dam's spillway is an overflow type with 21 floodgates and has a maximum discharge of 21,900 m3/s (773,391 cu ft/s). The dam is located before a bend in the river and its power station is located on the other side of a ridge that meets the dam's right abutment. Water is delivered to the power station via two tunnels, 775 m (2,543 ft) and 759 m (2,490 ft) long. Generators 1 and 3 deliver power to China while 2 and 4 deliver to North Korea. (Full article...)
Klang Gates Dam (Malay: Empangan Klang Gates) is a dam in Ulu Klang, Gombak District, Selangor, Malaysia. It is also known as the Bukit Tabur Dam. Completed in 1958, the dam is the first dam in Malaysia for water supply. It is a concrete arch dam with a spillway in the centre.
The reservoir impounded by the dam is one of the major sources of drinking water for residents of the Klang Valley, where the national capital, Kuala Lumpur, is located. The dam's water storage capacity is 25,104 million liters. The Bukit Nanas water treatment plant takes raw water from this reservoir and produces 145 million liters of treated water per day.
During the 2014 water crisis, capacity dropped as low as 54%, providing only approximately 80 days of water supply.
Beside the dam is Klang Gate Ridge, the largest quartz ridge in the world. Split into two sections known as Bukit Tabur West and Bukit Tabur East, the ridge is 200m wide and has a length of 22km. It is unique for its sheer size as well as for its four types of quartz formations. The ridge is rich in vegetation, supporting at least 265 plant species including 5 endemic ones. A rare animal, the serow (a mountain goat), is also found on the ridge. (Full article...)
The Rusumo Hydroelectric Power Station (Kinyarwanda: Urugomero rw'amashanyarazi rwa Rusumo, French: Centrale hydroélectrique de Rusumo), also known as the Rusumo Power Station, is a hydropower plant under construction, with initial planned capacity installation of 80 megawatts (110,000 hp) when completed. The project will involve the construction of a dam, with run of river design. A more expensive 90 megawatts (120,000 hp) reservoir design was considered before being abandoned in favor of an 80 MW project with a smaller environmental impact and an estimated cost of US$300 million compared to US$400 million for the bigger project. The World Bank announced on 6 August 2013 that it had approved loans totaling US$340 million towards the US$468.60 million needed for the project. In November 2013, the African Development Bank approved a loan of US$113 million towards completion of the project. (Full article...)
Construction began in 1986. The dam was immediately seen as a threat by the South Korean government. The Bukhan River is a tributary of the Han River, and war scenarios foresaw North Korea releasing flood waters that could engulf the South Korean capital of Seoul. Though fears of a "water attack" have diminished, 2002 satellite photos of cracks in the North Korean dam caused fears it could collapse following heavy rains. In September 2005, without warning, North Korea released a massive amount of water from a dam, causing large floods in South Korea.
To protect itself against the perceived threat, South Korea built the Peace Dam across the border, 22 miles to the south.
Since Imnam Dam was built, water inflow to the Han River has decreased by 12 percent. This has caused environmental problems and water shortages in the Seoul metropolitan area.
Imnam Dam is 710 meters wide, 121.5 meters high, and has a claimed capacity of 2.62 billion tons of water. (Full article...)
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The Mazar Dam is a concrete-face rock-fill dam on the Paute RiverCañar Province, Ecuador. The purpose of the dam is hydroelectric power generation and it is located directly upstream of the Paute Dam as part of the Amaluza-Molino project. The dam's power station has an installed capacity of 170 megawatts (230,000 hp). Construction on the dam began in 2004; the generators were commissioned in 2010 and the remaining works were completed in 2011. (Full article...)
Aiviekste hydroelectric power station is the first hydroelectric power station constructed in Latvia. It is located on the Aiviekste River. The power station was commissioned in 1925 and until 1938 it was the largest in Latvia. The power station was decommissioned in 1969; however, in 1988 it was decided to restore it. In 1993, the power station restarted power generation.
The power station has total capacity of 0.8 MW. In 2007, it generated 3GWh of electricity. The power station is operated by Latvenergo. (Full article...)
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Velebit Pumped Storage Power Plant (Croatian: Reverzibilna hidroelektrana Velebit) is a pumped-storage power plant in Croatia that has two turbines with a nominal capacity of 138 megawatts (185,000 hp) each, having a total capacity of 276 megawatts (370,000 hp). , it was one of three operational pumped-storage power plants in Croatia.
Wadi Shawka (literally 'powerful wadi') is a seasonal watercourse in the Hajar Mountains of Ras Al Khaimah, in the United Arab Emirates. Famous locally for the Shawka Dam, a renowned beauty spot and destination for outdoor sports, the wadi has long been an agricultural area and alongside existing farms, and many abandoned settlements exist on the sides of the wadi. The wadi enjoys unusually high rainfall of some 120mm per annum. (Full article...)
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Djorf Torba Dam is a dam in Kenadsa District, Béchar Province, Algeria, crossing the Oued Guir about 50 kilometres (31 mi) west of the capital, Béchar. It is used for the purposes of irrigation and water supply. The area around the head of the dam features a number of notable ancient monuments. The dam has resulted in a significant reduction in the flow of Oued Guir and Oued Saoura in locations downstream of the dam. (Full article...)
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Senj Hydroelectric Power Plant is a large high-pressure diversion power plant harnessing the Lika and Gacka Rivers water in Croatia. Senj HPP has four turbines with a nominal capacity of 72 MW each having a total capacity of 220 MW.
Another unit of HE Senj is about to be built with the support of EU funds and HEP Croatian Energy Company. A construction on a billion dollar project is set to start in mid 2014 with completion dates around 2017 or 2018 at the latest. (Full article...)
Dubrava Hydro Power Plant is a large power plant in Croatia that has four turbines with a nominal capacity of 21 MW each, amounting to a total capacity of 84 MW.
The power plant, which uses Lake Dubrava as its reservoir, was completed in 1989. It is located near the village of Sveta Marija in Međimurje County, not far from Donja Dubrava municipality seat, on the county's border with Varaždin County. The reservoir is also divided between the two counties.
Krčić is classified by its operator Hrvatska elektroprivreda as a very small power plant, as its installed power is 0.35 MW and produces between 1 and 2 GWh per year. Constructed in 1988, it is located on the Krka River spring, under the Topolje waterfall in the Kovačići village, approximately 4.5 km northeast from Knin. (Full article...)
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Weija Dam is a dam on the Densu River which supports the main water treatment plant for Accra in the Greater Accra Region of Ghana. It is operated by the Ghana Water Company.This supplies about 80 percent of the potable water for the entire city of Accra and its surrounding environs. Its construction began in 1974 and was completed in 1978 by Messrs Tahi, an Italian Company. (Full article...)
Jatiluhur Dam was designed by Coyne et Bellier and was constructed between 1957 and 1965 while the power station became operational in 1967. The dam serves several purposes including the provision of hydroelectric power generation, water supply, flood control, irrigation, and aquaculture. The power station has an installed capacity of 186.5 MW which feeds into the Java grid managed by the state-owned electricity company Perusahaan Listrik Negara. The Jatiluhur reservoir helps irrigate 240,000 ha (593,053 acres) of rice fields. The earth-fill dam is 105 m (344 ft) high and withholds a reservoir of 3,000,000,000 m3 (2,432,140 acre⋅ft), the largest in the country.
The dam's reservoir and morning glory looking towards the south and the spillway.
The Miljacka Hydroelectric Power Plant, formerly called Manojlovac, is a relatively small high-pressure diversion power plant. It is one of the oldest in Croatia. It was built in 1906 on the Krka River, some 15 km downstream from the town of Knin. The power plant capacity in the beginning was 17.7 MW, and it supplied the power to the calcium carbide factory in Šibenik.
The Ulu Tutong Dam is an embankment dam on the Sungai Tutong River in Tutong District, Brunei. The primary purpose of the dam is to increase water supply in Tutong and Brunei-Muara Districts by as much as 156,000,000 m3 (126,000 acre⋅ft) annually. It has a normal reservoir volume of 100,000,000 m3 (81,000 acre⋅ft), making it the largest water supply project in the country. In February 2010 Sinohydro won the bid to construct the US$63 million project and construction began soon thereafter. It was originally expected to be complete in February 2014 but the date was pushed to February 2015 due to difficulties at the construction site. It was eventually fully completed in February 2017. In July 2018, it was officially renamed Ulu Tutong Golden Jubilee Dam by Sultan Hassanal Bolkiah. The dam is owned by the Public Works Department of Brunei. (Full article...)
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The Baysh Dam is a gravity dam on Wadi Baysh about 35 km (22 mi) northeast of Baysh in the Jizan Region of southwestern Saudi Arabia. The dam has many purposes to include flood control, irrigation and groundwater recharge. The dam was constructed between 2003 and 2009. At 106 m (348 ft) in height, it is the tallest dam in Saudi Arabia. It was constructed by Yüksel İnşaat A.Ş. and is owned and operated by the Ministry of Water and Electricity. (Full article...)
Wawa Dam used to be the only source of water for Manila until Angat Dam was built and Wawa was abandoned in 1968. Due to insufficiency of water supply for Metro Manila, there was a strong clamor to reuse the dam. The dam and surrounding area is currently protected as part of the Pamitinan Protected Landscape.
The dam is also part of an urban legend called the "River Dam Lady", where Pandora, the soul of a woman who drowned there, drowns people, with firstborn males said to be the usual targets. (Full article...)
{{ Transclude list item excerpts as random slideshow | List of mountain ranges | section=Mountain ranges on Earth }} Select from Earth section, avoiding Moon
A significant part of Bulgaria's hydropower resources are located in the western areas of the range. There are a number of hydro-cascades and dams used for electricity production, irrigation, and as tourist destinations. In Greece, there are also the hydroelectric power plants of Thisavros and Platanovrysi. The Rhodopes have a rich cultural heritage including ancient Thracian sites such as Perperikon, Tatul and Belintash, and medieval castles, churches, monasteries, and picturesque villages with traditional Bulgarian architecture from the 18th and 19th centuries. (Full article...)
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Snowdonia, or Eryri (pronounced[ɛrəri]ⓘ), is a mountainous region and national park in North Wales. It contains all 15 mountains in Wales over 3000 feet high, including the country's highest, Snowdon (Yr Wyddfa), which is 1,085 metres (3,560 ft) tall. These peaks are all part of the Snowdon, Glyderau, and Carneddau ranges in the north of the region. The shorter Moelwynion and Moel Hebog ranges lie immediately to the south.
The national park has an area of 823 square miles (2,130 km2) (the fourth-largest in the UK), and covers most of central and southern Gwynedd and the western part of Conwy County Borough. This is much larger than the area traditionally considered Snowdonia, and in addition to the five ranges above includes the Rhinogydd, Cadair Idris, and Aran ranges and the Dyfi Hills. It also includes most of the coast between Porthmadog and Aberdyfi. The park was the first of the three national parks of Wales to be designated, in October 1951, and the third in the UK after the Peak District and Lake District, which were established in April and May 1951 respectively. The park received 3.89 million visitors in 2015. (Full article...)
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The Cariboo Mountains are the northernmost subrange of the Columbia Mountains, which run down into the Spokane area of the United States and include the Selkirks, Monashees and Purcells. The Cariboo Mountains are entirely within the province of British Columbia, Canada. The range is 7,700 square kilometres (3,000 sq mi) in area and about 245 km in length (southeast–northwest) and about 90 km at its widest (southwest–northeast). (Full article...)
The terms for 'mountain' are Adrar and adras in some Berber languages, and these terms are believed to be cognates of the toponymAtlas. The mountains are home to a number of animals and plants which are mostly found within Africa but some of which can be found in Europe. Many of these species are endangered and a few are already extinct. The weather is generally cool but summers are sunny, and the average temperature there is 25 °C. (Full article...)
The name shows the range's great importance as a source of drinking water, and the waters supply a great number of important cities in the southeast of Brazil. From its brooks are formed the Jaguari River, which supplies the northern region of Greater São Paulo; most left-bank tributaries of the Paraíba do Sul River, which crosses a densely populated and highly industrialized region; and the Grande River, which is the source of the Paraná River, one of the longest and most important in South America and the river with the world's largest hydroelectric output, through a series of power plants way down the river to Argentina and Paraguay.
The Wharepapa / Arthur Range is a mountain range partially marking the boundary between the Tasman District and West Coast Region of New Zealand's South Island. The range is at the eastern extent of the Tasman Mountains which make up much of the island's northwest, making it easily visible from across the low-lying Waimea Plains further to the east. The range's location and its many uses make it a significant site for local Māori, including the iwi of Te Ātiawa and Ngāti Rārua. This includes the prominent peaks of Mount Arthur and Pukeone / Mount Campbell, which both hold mana in their own right and have become part of the identity of the aforementioned iwi.
The mountains of Wharepapa / Arthur Range have a complex geological history, with most of their rocks dating to the Ordovician and having been transformed several times before being uplifted to their current position. The range is also notable for the vast networks of caves beneath its surface, including several of the deepest caves in New Zealand. These caves have developed as an excellent record of climatic and ecological conditions, with fossils or sub-fossils of dozens of native birds having been found, some of which are either extinct or no longer found in the region.
Despite early economic use, the conservation value of the range continues to be high, and during the late 1980s and early 1990s the area was a core part of efforts to establish a national park in the island's northwest. This culminated in the establishment of Kahurangi National Park in 1996, which continues to protect the Wharepapa / Arthur Range to this day. (Full article...)
The Gila Mountains lie northwest of Safford, Arizona and the Santa Teresa Mountains lie to the southwest across the Gila Valley. The highest point of the Gila Mountains is Slaughter Mountain at 6,556 feet (1,998 m); the Fishhooks Wilderness is located on the northwest end of the mountain range.
The volcanic mountains were used as a basalt source by the Olmec culture during the Early Formative period (1500 BCE to about 400 BCE). Quarried basalt was transported by raft through a network of rivers, to sites in the Olmec heartland for use in creating monuments, including colossal heads. (Full article...)
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The Chugach Mountains of southern Alaska are the northernmost of the several mountain ranges that make up the Pacific Coast Ranges of the western edge of North America. The range is about 250 miles (402 km) long and 60 miles (97 km) wide, and extends from the Knik and Turnagain Arms of the Cook Inlet on the west to Bering Glacier, Tana Glacier, and the Tana River on the east. It is bounded on the north by the Matanuska, Copper, and Chitina rivers. The highest point of the Chugach Mountains is Mount Marcus Baker, at 13,094 feet (3,991 m), but with an average elevation of 4,006 feet (1,221 m), most of its summits are not especially high. Even so, its position along the Gulf of Alaska ensures more snowfall in the Chugach than anywhere else in the world, an annual average of over 1500 cm (800 in).
On Mount Gordon Lyon, at about the 4,000 feet (1,200 m) level, is a 300 feet (91 m) five-pointed star using around 350 light globes. This faces Anchorage to be visible from the city at night. It is illuminated to commemorate Christmas, being lit from Thanksgiving until Christmas Day; and, on 9/11. Maintenance is undertaken by the US Air Force’s Joint Base Elmendorf-Richardson, although it was established in around 1960 and formerly maintained by the US Army having been near the former Army (Nike missileSite Summit) in the mountains. (Full article...)
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Stogovo (Macedonian: Стогово; Albanian: Stogovë) is a mountain in the western part of North Macedonia. It has impressive peaks: Golem Rid (2278 m), Babin Srt (2242 m), Kanesh and many more higher than 2000 meters above the sea level. Mountain Stogovo can be easily reached by bus that goes from the capital of North Macedonia – Skopje to the town of Debar, at the place called "Boshkov most" (bridge). The nature is almost totally preserved on the range, because this mountain is far away from the large populated areas in the country and it is not frequently visited by mountain climbers. (Full article...)
The Humboldts run roughly north-south for a distance of some 30 kilometres (19 mi), its eastern and western edges defined by the roughly parallel glaciated valleys of the Hollyford and Dart / Te Awa Whakatipu rivers. They are separated from the Ailsa Range to the south by the smaller valley of the Caples River. In the extreme southeast, the range drops straight to the waters of Lake Wakatipu, close to the small settlements of Kinloch and Glenorchy. Numerous small rivers have their sources within the Humboldts, notably the Routeburn River and the Olivine River. Two major tramping tracks follow valleys within the Humboldt Range, the Caples Track and the Routeburn Track.
Several peaks within the Humboldt Mountains rise to over 2,000 metres (6,600 ft) above sea level, the highest peak being Mount Bonpland, at 2,348 metres (7,703 ft). (Full article...)
The Dieng Volcanic Complex (Javanese: ꦢꦶꦲꦾꦁ, romanized: Dihyang) is a volcanic complex located on the Dieng Plateau in Central Java, Indonesia, a complex of volcanoes. The volcanic complex consists of two or more stratovolcanoes, more than 20 small craters, and Pleistocene to Holocene-age volcanic cones. It covers a 6 by 14 kilometres (3.7 by 8.7 mi) area. The Prahu stratovolcano was truncated by a large Pleistocene caldera and then filled by parasitic cones, lava domes, and craters which is 120 °C (248 °F). Some of them are turned into lakes. Toxic volcanic gas has caused fatalities and is a hazard at several craters. On 20 February 1979, 149 people died of gas poisoning in Pekisaran village on the plateau near the Sinila crater. The area is also home to a major geothermal project. (Full article...)
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Dovrefjell is a mountain range in Central Norway that forms a natural barrier between Eastern Norway and Trøndelag. The mountain range is located in Innlandet, Møre og Romsdal, and Trøndelag counties in Norway. As a result of its central location, its valleys and passes have been heavily trafficked during and probably preceding historical times. Several mountain inns were established in the Middle Ages to house pilgrims traveling through Dovrefjell to Trondheim, and there are even ruins of an old leper colony in the northern area of it. The main south-north highway (European route E6) and the Dovrebanen railway line both run through a mountain pass in the Dovrefjell range. The highway is a year-round highway but on rare occasions it is closed for short periods during heavy winter weather conditions. The mountain range runs through the municipalities of Oppdal in Trøndelag county, Folldal, Dovre, and Lesja in Innlandet county, and Sunndal in Møre og Romsdal county. The municipalities of Oppdal, Folldal, and Dovre, together, make up what is sometimes known as the Dovre Region.
As it is a natural habitat for many rare plants and animals, much of the Dovrefjell range has become a national park in several stages starting in 1911, when some plants were put under protection. When the railroad was built from Oslo to Trondheim in 1921, one of the marshes was preserved. In 1974, parts of the mountain range became Dovrefjell National Park and the park was extensively enlarged in 2002. Together with the neighboring Rondane National Park, the area has Norway (and Europe's) last stock of wild reindeer of Beringian origin. Dovrefjell (west of E6 / the Dovre Line) also has a stock of musk oxen, imported from East Greenland in 1932.
The Dovrefjell area has now been almost entirely protected as two national parks:
The highest mountain in the region is the 2,286-metre (7,500 ft) tall Snøhetta. The range provides cross-country skiing and hiking opportunities. The river Driva, running north through the municipality of Oppdal, has its source in the Dovrefjell range. (Full article...)
More than one hundred million years ago during the Nevadan orogeny, granite formed deep underground. The range started to uplift less than five million years ago, and erosion by glaciers exposed the granite and formed the light-colored mountains and cliffs that make up the range. The uplift caused a wide range of elevations and climates in the Sierra Nevada, which are reflected by the presence of five life zones (areas with similar plant and animal communities). Uplift continues due to faulting caused by tectonic forces, creating spectacular fault blockescarpments along the eastern edge of the southern Sierra.
The Sierra Nevada has played an important role in the history of California and the United States. The California Gold Rush occurred in the western foothills from 1848 through 1855. Due to its inaccessibility, the range was not fully explored until 1912. (Full article...)
The Alpine arch extends from Nice on the western Mediterranean to Trieste on the Adriatic and Vienna at the beginning of the Pannonian Basin. The mountains were formed over tens of millions of years as the African and Eurasian tectonic plates collided. Extreme shortening caused by the event resulted in marine sedimentary rocks rising by thrusting and folding into high mountain peaks such as Mont Blanc and the Matterhorn.
Mont Blanc spans the French–Italian border, and at 4,809 m (15,778 ft) is the highest mountain in the Alps. The Alpine region area contains 128 peaks higher than 4,000 m (13,000 ft).
The altitude and size of the range affect the climate in Europe; in the mountains, precipitation levels vary greatly and climatic conditions consist of distinct zones. Wildlife such as ibex live in the higher peaks to elevations of 3,400 m (11,155 ft), and plants such as edelweiss grow in rocky areas in lower elevations as well as in higher elevations.
Evidence of human habitation in the Alps goes back to the Palaeolithic era. A mummified man ("Ötzi"), determined to be 5,000 years old, was discovered on a glacier at the Austrian–Italian border in 1991.
By the 6th century BC, the Celtic La Tène culture was well established. Hannibal notably crossed the Alps with a herd of elephants, and the Romans had settlements in the region. In 1800, Napoleon crossed one of the mountain passes with an army of 40,000. The 18th and 19th centuries saw an influx of naturalists, writers, and artists, in particular, the Romanticists, followed by the golden age of alpinism as mountaineers began to ascend the peaks of the Alps.
The Alpine region has a strong cultural identity. Traditional practices such as farming, cheesemaking, and woodworking still thrive in Alpine villages. However, the tourist industry began to grow early in the 20th century and expanded significantly after World War II, eventually becoming the dominant industry by the end of the century.
The Winter Olympic Games have been hosted in the Swiss, French, Italian, Austrian and German Alps. the region is home to 14 million people and has 120 million annual visitors. (Full article...)
The Trinity Mountains are a subrange of the Klamath Mountains, one of the ranges within the California Coast Ranges and part the greater Pacific Coast Ranges, the coastal mountain system extending from Mexico to Alaska. The Trinity Mountains subrange rises in Siskiyou County and eastern Trinity County, Northern California.
The range is a large fault block of Cenozoic age created by the movements of the Santa Ynez Fault. A very narrow range, the Santa Ynez Mountains rise quickly on its north side and drops off equally dramatically along the range's south face along the Gaviota Coast. The Santa Ynez Mountains begin as a series of volcanic hills near Point Arguello, and gradually transitions eastward into a single, well-defined ridge extending from Gaviota Peak to Matilija Creek. The range is approximately contiguous with the Topatopa Mountains beyond to the east, which terminates abruptly at Sespe Creek.
The climate of the range is Mediterranean with most of the precipitation falling between November and March. Most of the range lies in the California chaparral and woodlands ecoregion. At the crest and on the north slope, the rainier regions support extensive oak woodlands, mixed with other broadleafed species such as madrone, sycamore and bay laurel, along with some conifers, primarily Coulter pines. (Full article...)
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Otryt is a mountain range in the Bieszczady Mountains of south-eastern Poland. It is located north of the San river. Its highest point is Trohaniec (939 m). Otryt is a long, straight ridge, approx. 18 km long, covered with fir and beech forests. (Full article...)
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The Columbia Mountains are a group of mountain ranges along the Upper Columbia River in British Columbia, Montana, Idaho and Washington. The mountain range covers 135,952 km² (52,491 sq mi). The range is bounded by the Rocky Mountain Trench on the east, and the Kootenai River on the south; their western boundary is the edge of the Interior Plateau. Seventy-five percent of the range is located in Canada and the remaining twenty-five percent in the United States; American geographic classifications place the Columbia Mountains as part of the Rocky Mountains complex, but this designation does not apply in Canada (despite a British Columbia government tourism campaign to rebrand their southern portion as the "Kootenay Rockies"). Mount Sir Sandford is the highest mountain in the range, reaching 3,519 metres (11,545 ft). (Full article...)
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The Chinati Mountains of Texas are a small range in the high desert of far West Texas near the city of Presidio. There is a pass through the mountains on Ranch to Market Road 2810, also known as Pinto Canyon Road, which connects to Farm to Market Road 170 at Ruidosa, Texas. Some believe the range derives its name from the Apache word ch'íná'itíh, which means gate or mountain pass.
The mountains are primarily composed of igneous and metamorphic rocks, and are believed to be the remains of a number of explosive volcanic caldera-building events in the remote past. The mountains are generally not forested, but rather vegetated with grasses, cactus, and brush typical of the Chihuahuan Desert. The Chinatis were extensively mined for silver from the 1860s through the 1910s.
The highest point in the range is Chinati Peak, with an elevation of 7,728 feet (2,355 m). Chinati Peak is also the highest point in Presidio County. It serves as a major landmark for the surrounding area, and its dome-shaped hump can be seen rising prominently in the distance to the southwest from US 90 between Van Horn and Marfa. Chinati Peak is encircled by jagged desert peaks and rugged canyons. The summit of Chinati Peak is broad and relatively flat, but it is surrounded by cliffs and brush-filled drainages on all sides. Sierra Parda, at 7,185 feet (2,190 m), is the second-highest peak in the range.
The Texas Parks and Wildlife Department received a donation from the Richard King Mellon Foundation of 39,000 acres in the Chinati Mountains in the late 1990s. Texas Parks and Wildlife is in the process of conducting multi-year surveys and development of the Chinati Mountains State Natural Area. As of 2022, access to the land is limited. (Full article...)
This mountainous area was named after Danish politician Thorvald Stauning (1873–1942) who had helped to finance expeditions to east Greenland planned and carried out by Danish explorers. (Full article...)
In the language of the native Ute people, Wasatch means "mountain pass" or "low pass over high range." According to William Bright, the mountains were named for a Shoshoni leader who was named with the Shoshoni term wasattsi, meaning "blue heron". In 1926, Cecil Alter quoted Henry Gannett from 1902, who said that the word meant "land of many waters," then posited, "the word is a common one among the Shoshones, and is given to a berry basket" carried by women. (Full article...)
The geography of Ireland comprises relatively low-lying mountains surrounding a central plain, with several navigable rivers extending inland. Its lush vegetation is a product of its mild but changeable climate which is free of extremes in temperature. Much of Ireland was woodland until the end of the Middle Ages. Today, woodland makes up about 10% of the island, compared with a European average of over 33%, with most of it being non-native conifer plantations. The Irish climate is influenced by the Atlantic Ocean and thus very moderate, and winters are milder than expected for such a northerly area, although summers are cooler than those in continental Europe. Rainfall and cloud cover are abundant.
Gaelic Ireland had emerged by the 1st century AD. The island was Christianised from the 5th century onwards. During this period Ireland was divided into many petty kingships under provincial kingships (Cúige "fifth" of the traditional provinces) vying for dominance and the title of High King of Ireland. In the late 8th century to early 11th century AD Viking raids and settlement took place culminating in the Battle of Clontarf on 23 April 1014 which resulted in the ending of Viking power in Ireland. Following the 12th century Anglo-Norman invasion, England claimed sovereignty. However, English rule did not extend over the whole island until the 16th–17th century Tudor conquest, which led to colonisation by settlers from Britain. In the 1690s, a system of Protestant English rule was designed to materially disadvantage the Catholic majority and Protestant dissenters, and was extended during the 18th century. With the Acts of Union in 1801, Ireland became a part of the United Kingdom. A war of independence in the early 20th century was followed by the partition of the island, leading to the creation of the Irish Free State, which became increasingly sovereign over the following decades until it declared a republic in 1948 ( Republic of Ireland Act, 1948) and Northern Ireland, which remained a part of the United Kingdom. Northern Ireland saw much civil unrest from the late 1960s until the 1990s. This subsided following the Good Friday Agreement in 1998. In 1973, both the Republic of Ireland and the United Kingdom, with Northern Ireland as part of it, joined the European Economic Community. Following a referendum vote in 2016, the United Kingdom, Northern Ireland included, left the European Union (EU) in 2020. Northern Ireland was granted a limited special status and allowed to operate within the EU single market for goods without being in the European Union; the economy has subsequently grown faster than the rest of the UK.
The Lower Himalayan Range (Nepali: पर्वत शृङ्खला parbat shrinkhalā) – also called the Middle Himalayas or Lesser Himalayas or Himachal – is a major east–west mountain range with elevations 3,700 to 4,500 m (12,000 to 14,500 feet) in the northernmost regions of the Indian subcontinent along the crest, paralleling the much higher High Himalayas range from the Indus River in Pakistan across northern India, Nepal and Bhutan but then the two ranges become increasingly difficult to differentiate east of Bhutan as the ranges approach the Brahmaputra River. The Himachal range also parallels the lower Shiwalik or Churia Range (Outer Himalaya) to the south. The Pir Panjal is the largest range of the Lesser Himalayas. (Full article...)
The Massif de la Hotte is a mountain range in southwestern Haiti, on the Tiburon Peninsula. About 2.5 million years ago, Massif de la Hotte was separated from the Massif de la Selle by a deep, wide sea channel, and formed a separate island. This resulted in a hotbed of endemism in la Hottes bird, plant, and reptile communities. The Massif de la Hotte is subdivided into the Oriental la Hotte in the East, the central la Hotte and the Occidental la Hotte on the Western tip of the Tiburon peninsula. The Occidental la Hotte is relatively remote and is one of the most biologically diverse and significant areas of all of Hispaniola. It also supports some of the last stands of Haiti's dense cloud forest on its peaks.
{{ Transclude list item excerpts as random slideshow | List of dams and reservoirs | section=Africa | sectiononly=yes }} Should pick only the international dams
The Koudiat Acerdoune Dam is a gravity dam located 9.5 km (6 mi) southwest of Kadiria on the Isser River in Bouïra Province, Algeria. The dam was constructed between 2002 and 2008 with the roller-compacted concrete technique. It serves the purpose of providing water for industrial, irrigation and municipal uses. It retains a 640,000,000 m3 (518,856 acre⋅ft) capacity reservoir which supplies water for the irrigation of 20,000 ha (49,421 acres) of land along with providing the Algiers region with 178,000,000 m3 (144,307 acre⋅ft) of drinking water annually. (Full article...)
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The Gove Dam is an embankment dam on the Kunene River about 75 km (47 mi) south of Huambo in Huambo Province, Angola. The purpose of the dam is to control floods and generate hydroelectric power. It has a power generating capacity of 60 megawatts (80,000 hp) each) (three turbines of 20 megawatts (27,000 hp) each), enough to power over 30,000 homes. (Full article...)
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The Akosombo Dam, also known as the Volta Dam, is a hydroelectric dam on the Volta River in southeastern Ghana in the Akosombo gorge and part of the Volta River Authority. The construction of the dam flooded part of the Volta River Basin and led to the subsequent creation of Lake Volta. Lake Volta is the largest man-made lake in the world by surface area. It covers 8,502 square kilometres (3,283 sq mi), which is 3.6% of Ghana's land area. With a volume of 148 cubic kilometers, Lake Volta is the world's third largest man-made lake by volume; the largest being Lake Kariba which contains 185 cubic kilometers of water.
The primary purpose of the Akosombo Dam was to provide electricity for the aluminium industry. The Akosombo Dam was called "the largest single investment in the economic development plans of Ghana." The dam is significant for providing the majority of both Togo and Benin's electricity, although the construction of the Adjarala Dam (on Togo's Mono River) hopes to reduce these countries' reliance on imported electricity. The dam's original electrical output was 912 megawatts (1,223,000 hp), which was upgraded to 1,020 megawatts (1,370,000 hp) in a retrofit project that was completed in 2006.
The flooding that created the Lake Volta reservoir displaced many people and had a significant impact on the local environment, including seismic activity that led to coastal erosion; a changed hydrology caused microclimatic changes with less rain and higher temperatures. The soil surrounding the lake is less fertile than the soil under it, and heavy agricultural use has required the use of fertilizers, which in turn has led to eutrophication, which caused, among others, the explosive growth of an invasive weed that renders water navigation and transportation difficult, and form a habitat for the vectors of water-borne illnesses such as bilharzia, river blindness and malaria. Resettlement of the displaced inhabitants proved complex and in some cases unsuccessful; traditional farming practices disappeared and poverty increased. (Full article...)
The Kariba Dam is a double curvature concrete arch dam in the Kariba Gorge of the Zambezi river basin between Zambia and Zimbabwe. The dam stands 128 metres (420 ft) tall and 579 metres (1,900 ft) long. The dam forms Lake Kariba, which extends for 280 kilometres (170 mi) and holds 185 cubic kilometres (150,000,000 acre⋅ft) of water. (Full article...)
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Mai Nefhi (Tigrigna for "Water-Distend?") is both a location near Asmara, Eritrea and the dam after which it was named. The Mai Nefhi dam was completed in 1970, during the reign of Haile Selassie, and remains the main water source for Asmara.
Abardae a town with a population of 3000 residents is located nearby. Eritrea Institute of Technology, the only technical college in the country is located 500m away from Abardae-Mai Nefhi. (Full article...)
The site for the dam at Bumbuna Falls was first identified in 1971, and construction was begun in 1975. Work was halted in May 1997, about 85% completed, due to the Sierra Leone Civil War, and did not restart until 2005. The project was completed and went online in 2009. Nearly a third of the dam's US$327 million cost ($103 million) was supplied by the African Development Bank. A 26 January 2005 report noted that 33 villages would be affected by the dam, although only one (of 16 households and 135 people) would require resettlement.
The dam has a maximum height of 87 metres (285 ft), a length of 400 metres (1,300 ft) at the crest and a volume of 2,500,000 cubic metres (88,000,000 cu ft). The volume of the reservoir created is 410,000,000 cubic metres (1.4×1010 cu ft), 428,000,000 cubic metres (1.51×1010 cu ft) or 480,000,000 cubic metres (1.7×1010 cu ft). There are two Francis turbines, each rated for 25 megawatts (34,000 hp).
After completion, the project has been plagued with problems, and barely produces 10 megawatts (13,000 hp) or 25 megawatts (34,000 hp) as of 2013.
A second phase is planned, for a 110-megawatt (150,000 hp) power station. In June 2011, the government announced it had awarded the $750 million Phase II project to Joule Africa, a UK-based company. This will entail a second dam and plant. Construction was set to begin in 2014 and continue on until at least 2017. (Full article...)
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The Naute Dam is a dam outside of Keetmanshoop in the ǁKaras Region of Namibia. It was built by Concor between 1970 and 1972 and was officially commissioned in September 1972. It is the third largest dam in Namibia after Hardap Dam to Naute's north and can hold up to 69 million cubic metres of water. The dam's source is the Löwen River, a tributary of the Fish River. (Full article...)
The Von Bach Dam (originally the Sartorius von Bach Dam) is a rock-fill embankment dam on the Swakop River near Okahandja in the Otjozondjupa Region of Namibia. Built in 1968 and commissioned in 1970, the dam provides Namibia's capital of Windhoek with much of the city's water. It also supplies Okahandja. The dam has a capacity of 48.56 million cubic metres (63,510,000 cu yd). Water from the reservoir is sent directly to a water treatment plant downstream. The treatment plant was completed in 1971 and upgraded in 1997. (Full article...)
Toker Dam is the fourth largest dam in Eritrea. Construction was begun in 1997 and completed in 2001, despite having to be halted for a few months in 1998 when Ethiopia and Eritrea were at war. Its primary designer was Natural Resources Consulting Engineers from Colorado, USA. Furthermore, NRCE Inc., was the primary consultant on the project. The construction contractor was Keagnam of South Korea.
The project was designed to provide modern and effective service to the City of Asmara and neighboring villages. It further provides safe drinking water for the local population. The dam is a roller compacted concrete dam, and was one of the highest in sub-Saharan Africa at the time it was built. (Full article...)
The Bujagali Power Station is a hydroelectric power station across the Victoria Nile that harnesses the energy of its namesake, the Bujagali Falls, in Uganda. Construction began in 2007 and concluded in 2012. It was officially inaugurated on 8 October 2012 by Ugandan President Yoweri Museveni and Aga Khan IV in the presence of African politicians and investors.
The 250-megawatt power station was the largest hydroelectric energy source in Uganda when it was commissioned. However, the planned Karuma and Ayago power stations would be larger. The funding for the station was a source of some concern, as investors joined and departed from the project. As of July 2014, the plant was managed by Bujagali Energy Limited, which selected Italian contractor Salini Impregilo to develop the project. (Full article...)
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Outline of underwater diving § Modes of underwater diving[edit]
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