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Laguna De Términos
Laguna de Términos is the largest tidal lagoon by volume located entirely on the Gulf of Mexico, as well as one of the most biodiverse. Exchanging water with several rivers and lagoons, the Laguna is part of the most important hydrographic river basin in Mexico. It is important commercially, as well as ecologically by serving as a refuge for an extensive number of flora and fauna; its mangroves provide an important role as a refuge for migratory birds. Geography Laguna de Términos (''Lagoon of Ends'', as it is the end of regional rivers) is made up of a series of rich, sediment-laden lagoons and tidal estuaries connected by two channels to the Bay of Campeche in the southern part of the Gulf of Mexico. It lies in the southwestern part of the Mexican state of Campeche, mostly within Carmen Municipality, with the southwestern portion in Palizada Municipality. It is long, wide, and covers an area of . Every nine days, approximately 50% of the lagoon's water volume is renewed, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Campeche
Campeche (; yua, Kaampech ), officially the Free and Sovereign State of Campeche ( es, Estado Libre y Soberano de Campeche), is one of the 31 states which make up the 32 Federal Entities of Mexico. Located in southeast Mexico, it is bordered by the states of Tabasco to the southwest, Yucatán to the northeast, and Quintana Roo to the east; to the southeast by the Orange Walk district of Belize, and by the Petén department of Guatemala to the south. It has a coastline to the west with the Gulf of Mexico. The state capital, also called Campeche, was declared a World Heritage Site in 1997. The formation of the state began with the city, which was founded in 1540 as the Spanish began the conquest of the Yucatán Peninsula. The city was a rich and important port during the colonial period, but it declined after Mexico's independence. Campeche was part of the province of Yucatán but split off in the mid-19th century, mostly due to political friction with the city of Mérida. Much ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isla Del Carmen
Ciudad del Carmen is a city in the southwest of the Mexican state of Campeche. Ciudad del Carmen is located at on the southwest of Carmen Island, which stands in the Laguna de Términos on the coast of the Gulf of Mexico. , Ciudad del Carmen had a population of 169,466, up from the 2005 census of 154,197. In July 2006, Ciudad del Carmen celebrated its 150th anniversary as a city. The city is nicknamed "The Pearl of the Gulf". Ciudad del Carmen was a small city mostly devoted to fishing until the 1970s when oil was discovered in the region; since then it has grown and developed substantially. To this day Carmen is known as one of the best locations to find seafood in Mexico. As late as the early 1980s the city could long be reached only by ferry boats called "pangas" or small motorboats ("lanchas") operating between Ciudad del Carmen and Zacatal; this changed with the construction of a causeway bridge to the mainland in the 1980s (eastbound) and another one in 1994 (westbound) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Threatened
Threatened species are any species (including animals, plants and fungi) which are vulnerable to endangerment in the near future. Species that are threatened are sometimes characterised by the population dynamics measure of ''critical depensation'', a mathematical measure of biomass related to population growth rate. This quantitative metric is one method of evaluating the degree of endangerment. IUCN definition The International Union for Conservation of Nature (IUCN) is the foremost authority on threatened species, and treats threatened species not as a single category, but as a group of three categories, depending on the degree to which they are threatened: *Vulnerable species *Endangered species * Critically endangered species Less-than-threatened categories are near threatened, least concern, and the no longer assigned category of conservation dependent. Species which have not been evaluated (NE), or do not have sufficient data (data deficient) also are not considered "t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protected Area
Protected areas or conservation areas are locations which receive protection because of their recognized natural, ecological or cultural values. There are several kinds of protected areas, which vary by level of protection depending on the enabling laws of each country or the regulations of the international organizations involved. Generally speaking though, protected areas are understood to be those in which human presence or at least the exploitation of natural resources (e.g. firewood, non-timber forest products, water, ...) is limited. The term "protected area" also includes marine protected areas, the boundaries of which will include some area of ocean, and transboundary protected areas that overlap multiple countries which remove the borders inside the area for conservation and economic purposes. There are over 161,000 protected areas in the world (as of October 2010) with more added daily, representing between 10 and 15 percent of the world's land surface area. As of 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seagrass
Seagrasses are the only flowering plants which grow in marine environments. There are about 60 species of fully marine seagrasses which belong to four families (Posidoniaceae, Zosteraceae, Hydrocharitaceae and Cymodoceaceae), all in the order Alismatales (in the clade of monocotyledons). Seagrasses evolved from terrestrial plants which recolonised the ocean 70 to 100 million years ago. The name ''seagrass'' stems from the many species with long and narrow leaves, which grow by rhizome extension and often spread across large "meadows" resembling grassland; many species superficially resemble terrestrial grasses of the family Poaceae. Like all autotrophic plants, seagrasses photosynthesize, in the submerged photic zone, and most occur in shallow and sheltered coastal waters anchored in sand or mud bottoms. Most species undergo submarine pollination and complete their life cycle underwater. While it was previously believed this pollination was carried out without pollinators ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexican Federal Highway 180
Federal Highway 180 is a Mexican Federal Highway that follows Mexico's Gulf and Caribbean Coast from the Mexico-U.S. border at Brownsville, Texas, into Matamoros, Tamaulipas, to the resort city of Cancún, Quintana Roo, in the Yucatán Peninsula. Although the highway is numbered as a west-east route, it initially follows a north-south alignment through Tamaulipas and Veracruz. The highway is briefly interrupted from El Encinal to Soto la Marina in Tamaulipas just north of Tampico. The highway goes through Tampico south, interrupted briefly from Cerro Azul to Potrero del Llano, to the city of Poza Rica. It continues south from there through Veracruz and Coatzacoalcos. From there it goes east into Villahermosa, north through Campeche into Mérida, and finally east into Cancún. Highway 180 connects at the Mexico–United States border with U.S. Route 83, one of the longest north-south U.S. Highways in the United States at . Federal Highway 180 also connects to both Interstate 6 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zacatal Bridge
The Zacatal Bridge ( es, Puente El Zacatal) is located southwest of Ciudad del Carmen, in the state of Campeche in Mexico. It connects the Atasta peninsula and the Isla del Carmen. This is the longest bridge in the state and at the time of opening the longest in Mexico with a length of 3,861 m and a width of 9.00 m. It is a two-lane road bridge for the Federal Highway 180. It is one of the busiest in the country since it is the gateway to the Yucatán Peninsula The Yucatán Peninsula (, also , ; es, Península de Yucatán ) is a large peninsula in southeastern Mexico and adjacent portions of Belize and Guatemala. The peninsula extends towards the northeast, separating the Gulf of Mexico to the north .... The superstructure is composed entirely of prefabricated elements to base being: 121 heads of precast concrete, 496 Type IV girders Aastha amended and 8 box girders well as 124 post-tensioned concrete slabs. It was completed in October 1994. External links {{Use dmy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Pedro Y San Pablo River
The San Pedro y San Pablo River is a river of Mexico. It is a distributary of the Usumacinta River. It branches from the lower Usumacinta and flows northwards, emptying into Atasta and Pom lagoons which are connected to Laguna de Términos, which in turn connects to the Gulf of Mexico.Bach, L., Calderon, R., Cepeda, M. F., Oczkowski, A., Olsen, S.B., Robadue, D. (2005). ''Level One Site Profile: Laguna de Términos and its Watershed, Mexico''. Narragansett, RI: Coastal Resources Center, University of Rhode Island. See also *List of rivers of Mexico References *Atlas of Mexico, 1975 (http://www.lib.utexas.edu/maps/atlas_mexico/river_basins.jpg). *The Prentice Hall American World Atlas, 1984. *Rand McNally, The New International Atlas, 1993. Rivers of Mexico Usumacinta River Gulf Coast of Mexico {{Mexico-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palizada River
The Palizada River is a river in Mexico. It is a distributary of the Usumacinta River. It branches from the lower Usumacinta and flows northeastwards, emptying into a complex of lagoons (Viejo, Santa Gertrudis, and El Vapor) connected to Laguna de Términos, a coastal lagoon of the Gulf of Mexico.Bach, L., Calderon, R., Cepeda, M. F., Oczkowski, A., Olsen, S.B., Robadue, D. (2005). ''Level One Site Profile: Laguna de Términos and its Watershed, Mexico''. Narragansett, RI: Coastal Resources Center, University of Rhode Island. The town of Palizada is on the river. The Palizada provides about 75% of the freshwater inflow to the Laguna de Términos. The river's flow varies seasonally, generally highest during October and November, and declining from December to June. The Palizada is an important source of nutrients for the adjacent wetlands and lagoons. The Palizada flows through the Pantanos de Centla, a large seasonally- and permanently-flooded freshwater swamp forest. As it nears ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Usumacinta River
The Usumacinta River (; named after the howler monkey) is a river in southeastern Mexico and northwestern Guatemala. It is formed by the junction of the Pasión River, which arises in the Sierra de Santa Cruz (Guatemala), Sierra de Santa Cruz (in Guatemala) and the Salinas River (Guatemala), Salinas River, also known as the Chixoy River, Rio Chixoy, or the Rio Negro, which descends from the Sierra Madre de Chiapas, Sierra Madre de Guatemala. It defines part of the border between Guatemala and the Mexican state of Chiapas, then continues its northwesterly course, meandering through the Mexican state of Tabasco to the Gulf of Mexico. After serving as a border between Mexico and Guatemala, the Usumacinta River enters Mexican territory in the state of Tabasco and across the Cañón del Usumacinta (Usumacinta Canyon) ecological reserve, forming impressive canyons along its route. Passing the canyon called ''"Boca del Cerro",'' Tenosique, the Usumacinta goes into the plain of Tabasc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distributary
A distributary, or a distributary channel, is a stream that branches off and flows away from a main stream channel. Distributaries are a common feature of river deltas. The phenomenon is known as river bifurcation. The opposite of a distributary is a tributary, which flows ''towards'' and joins another stream. Distributaries are often found where a stream approaches a lake or an ocean. They can also occur inland, on alluvial fans, or where a tributary stream bifurcates as it nears its confluence with a larger stream. In some cases, a minor distributary can divert so much water from the main channel that it can later become the main route. Related terms Common terms to name individual river distributaries in English-speaking countries are ''arm'' and ''channel''. These terms may refer to a distributary that does not rejoin the channel from which it has branched (e.g., the North, Middle, and South Arms of the Fraser River, or the West Channel of the Mackenzie River), or to one ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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