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Conchos People
The Río Conchos (Conchos River) is a large river in the Mexican state of Chihuahua. It joins the Río Bravo del Norte (known in the United States as the Rio Grande) at the town of Ojinaga, Chihuahua. Description The Rio Conchos is the main river in the state of Chihuahua and the Rio Grande's largest tributary. It is one of the most important river systems in all of northern Mexico. The Conchos has several reservoirs that make use of its water for agricultural and hydropower uses. Course The Conchos rises in the Sierra Madre Occidental in the municipality of Bocoyna, Chihuahua, where it heads east and receives several tributaries along the way. At Valle de Zaragoza municipality, Chihuahua, it is stopped at the La Boquilla Dam, the largest in Chihuahua forming Toronto Lake. It then heads east again, forming Colina Lake and then passes through Camargo, Chihuahua, the main agricultural center in the region, where it receives the Florido as a tributary. From there, the Concho ...
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Ojinaga
Ojinaga (Manuel Ojinaga) is a town and seat of the municipality of Ojinaga, in the northern Mexican state of Chihuahua. As of 2015, the town had a total population of 28,040. It is a rural border town on the U.S.-Mexico border, with the city of Presidio, Texas, directly opposite, on the U.S. side of the border. Ojinaga is situated where the Río Conchos drains into the Río Grande (known as the Rio Bravo in Mexico), an area called La Junta de los Rios. Presidio and Ojinaga are connected by the Presidio-Ojinaga International Bridge and the Presidio–Ojinaga International Rail Bridge. History Ojinaga was founded around AD 1200 by the Pueblo Native Americans, who were later assimilated by Uto-Aztecan speakers. Ojinaga was first visited by Spanish explorers (led by Álvar Núñez Cabeza de Vaca) in 1535. (See La Junta Indians) During the Mexican Revolution, Ojinaga was the scene of the Battle of Ojinaga, between Pancho Villa's revolutionaries and government troops. The U. ...
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Juan Aldama, Chihuahua
Aldama is a city and seat of the municipality of Aldama in the northern Mexican state of Chihuahua. As of 2020, the city had a population of 22,568 inhabitants. History The city of Aldama dates from August 7, 1671, when Captain Pedro Cano de los Ríos established two sites for cattle raising. By 1717, the Franciscan friars established a mission called San Jerónimo there, to evangelize the local natives, known as ''conchos'' and ''chinarras.'' Economy Agriculture is the city's main economic activity. Commerce now plays an important role, offering products to residents and to people in transit between Chihuahua and Ojinaga. Many residents travel to Chihuahua city to work or study. Infrastructure Transportation Mexican Federal Highway 16 is the main road through Aldama. It crosses Aldama from east to west, connecting it with Chihuahua, Coyame, and Ojinaga, a port of entry to the U.S. state of Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') ...
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List Of Longest Rivers Of Mexico
Among the longest rivers of Mexico are 26 streams of at least . In the case of rivers such as the Colorado River, Colorado, the length listed in the table below is solely that of the main stem. In the case of the Grijalva River, Grijalva and Usumacinta River, Usumacinta, it is the combined lengths of two river systems that share a delta (river), delta. In the case of the Nazas River, Nazas and Aguanaval River, Aguanaval, it is the combined lengths of separate rivers that flow into the same Endorheic basin, closed basin. Three rivers in this list cross international boundaries or form them. The Colorado and the Rio Grande (Río Bravo del Norte or Río Bravo) begin in the United States and flow into Mexico, while the Usumacinta begins in Guatemala and flows into Mexico. The primary source for the length, watershed, and surface runoff data in the table below is the 10th edition of ''Statistics on Water in Mexico'', published by the National Water Commission in Mexico (CONAGUA) ...
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List Of Rivers Of Mexico
This is a list of rivers of Mexico, listed from north to south. There are 246 rivers on this list. Alternate names for rivers are given in parentheses. Rivers flowing into the Gulf of Mexico *Río Bravo, the name of the Rio Grande in Mexico ** San Juan River *** Pesquería River **** Salinas River ** Salado River *** Sabinas Hidalgo River *** Candela River *** Sabinas River **Conchos River *** Chuviscar River ****Sacramento River *** San Pedro River *** Florida River **** Parral River *** Balleza River (San Juan River) * San Fernando River (Conchos River) * Soto La Marina River (Santander River) ** Purificación River *Pánuco River **Tamesí River (Guayalejo River) ** Chicayán River ** Santa Maria River (Tamuín River) (Tampoán River) *** Río Verde **Moctezuma River *** Tempoal River *** Amajac River *** Extoraz River ***Tula River * Tuxpan Ver (Tuxpan River) **Pantepec River **Vinazco River *Cazones River *Tecolutla River **Necaxa River *Nautla River ** Bobos River *Actopan Ri ...
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Overgrazing
Overgrazing occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods. It can be caused by either livestock in poorly managed agricultural applications, game reserves, or nature reserves. It can also be caused by immobile, travel restricted populations of native or non-native wild animals. Overgrazing reduces the usefulness, productivity, and biodiversity of the land and is one cause of desertification and erosion. Overgrazing is also seen as a cause of the spread of invasive species of non-native plants and of weeds. Degrading land, emissions from animal agriculture and reducing the biomass in a ecosystem contribute directly to climate change. Overgrazing can be reversed or prevented by removing grazers in order to give plants time to recover between grazing events. Successful planned grazing strategies have been support in the American bison of the Great Plains, or migratory Wildebeests of the African savann ...
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Introduced Species
An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there by human activity, directly or indirectly, and either deliberately or accidentally. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are considered naturalized. The process of human-caused introduction is distinguished from biological colonization, in which species spread to new areas through "natural" (non-human) means such as storms and rafting. The Latin expression neobiota captures the characteristic that these species are ''new'' biota to their environment in terms of established biological network (e.g. food web) relationships. Neobiota can further be divided into neozoa (also: neozoons, sing. neozoon, i.e. animals) and neophyt ...
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River Engineering
River engineering is a discipline of civil engineering which studies human intervention in the course, characteristics, or flow of a river with the intention of producing some defined benefit. People have intervened in the natural course and behaviour of rivers since before recorded history—to manage the water resources, to protect against flooding, or to make passage along or across rivers easier. Since the Yuan Dynasty and Ancient Roman times, rivers have been used as a source of hydropower. From the late 20th century, the practice of river engineering has responded to environmental concerns broader than immediate human benefit. Some river engineering projects have focused exclusively on the restoration or protection of natural characteristics and habitats. Hydromodification encompasses the systematic response to alterations to riverine and non-riverine water bodies such as coastal waters (estuaries and bays) and lakes. The U.S. Environmental Protection Agency (EPA) has ...
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Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ...
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Spring (hydrosphere)
A spring is a point of exit at which groundwater from an aquifer flows out on top of Earth's crust (pedosphere) and becomes surface water. It is a component of the hydrosphere. Springs have long been important for humans as a source of fresh water, especially in arid regions which have relatively little annual rainfall. Springs are driven out onto the surface by various natural forces, such as gravity and hydrostatic pressure. Their yield varies widely from a volumetric flow rate of nearly zero to more than for the biggest springs. Formation Springs are formed when groundwater flows onto the surface. This typically happens when the groundwater table reaches above the surface level. Springs may also be formed as a result of karst topography, aquifers, or volcanic activity. Springs also have been observed on the ocean floor, spewing hot water directly into the ocean. Springs formed as a result of karst topography create karst springs, in which ground water travels throu ...
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Island Press
Island Press is a nonprofit, environmental publisher based in Washington, D.C., United States, that specializes in natural history, ecology, conservation, and the built environment. Established in 1984, Island Press generates about half of its revenue through sales and half through donations by organizations and individuals. History Island Press originated in northern California in 1978 as a publisher of books on the human relationship to the natural world. In 1984, the press re-organized to focus exclusively on books for people working on solutions to environmental problems, defined broadly to include the protection of biodiversity, land use planning, environmental issues related to international trade, and other topics. As part of this refocusing, Island Press moved its main office to Washington, D.C., where it remains today. The founders in 1984 were Catherine Conover, Walter Sedgwick, Barbara Dean and Charles Savitt. Savitt stepped down as president on April 30, 2016. David M ...
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Biodiversity
Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') level. Biodiversity is not distributed evenly on Earth; it is usually greater in the tropics as a result of the warm climate and high primary productivity in the region near the equator. Tropical forest ecosystems cover less than 10% of earth's surface and contain about 90% of the world's species. Marine biodiversity is usually higher along coasts in the Western Pacific, where sea surface temperature is highest, and in the mid-latitudinal band in all oceans. There are latitudinal gradients in species diversity. Biodiversity generally tends to cluster in hotspots, and has been increasing through time, but will be likely to slow in the future as a primary result of deforestation. It encompasses the evolutionary, ecological, and cultural ...
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Freshwater Ecoregions
An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of land or water, and contain characteristic, geographically distinct assemblages of natural communities and species. The biodiversity of flora, fauna and ecosystems that characterise an ecoregion tends to be distinct from that of other ecoregions. In theory, biodiversity or conservation ecoregions are relatively large areas of land or water where the probability of encountering different species and communities at any given point remains relatively constant, within an acceptable range of variation (largely undefined at this point). Three caveats are appropriate for all bio-geographic mapping approaches. Firstly, no single bio-geographic framework is optimal for all taxa. Ecoregions reflect the best compromise for as many taxa as possible. Sec ...
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