|
Sierra De Los Tuxtlas
The Sierra de Los Tuxtlas (Tuxtlas Mountains) are a volcanic belt and mountain range along the southeastern Veracruz Gulf coast in Eastern Mexico. The Los Tuxtlas Biosphere Reserve (Biósfera Los Tuxtlas) includes the coastal and higher elevations of the Sierra de Los Tuxtlas. 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. Geography Peaks in this range include Volcano Santa Marta and Volcano San Martín Tuxtla, both rising above 1,700 meters. San Martín Tuxtla is the only recently active volcano in the belt, erupting in 1664 and again in May 1793. It is a broad alkaline shield volcano with a one kilometer wide summit. Hundreds of smaller cinder cones are prevalent throughout the Sierra. Other, extinct volcanoes include San Martin P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neotropical Realm
The Neotropical realm is one of the eight biogeographic realms constituting Earth's land surface. Physically, it includes the tropical terrestrial ecoregions of the Americas and the entire South American temperate zone. Definition In biogeography, the Neotropic or Neotropical realm is one of the eight terrestrial realms. This realm includes South America, Central America, the Caribbean islands, and southern North America. In Mexico, the Yucatán Peninsula and southern lowlands, and most of the east and west coastlines, including the southern tip of the Baja California Peninsula are Neotropical. In the United States southern Florida and coastal Central Florida are considered Neotropical. The realm also includes temperate southern South America. In contrast, the Neotropical Floristic Kingdom excludes southernmost South America, which instead is placed in the Antarctic kingdom. The Neotropic is delimited by similarities in fauna or flora. Its fauna and flora are distinct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cinder Cone
A cinder cone (or scoria cone) is a steep conical hill of loose pyroclastic fragments, such as volcanic clinkers, volcanic ash, or scoria that has been built around a volcanic vent. The pyroclastic fragments are formed by explosive eruptions or lava fountains from a single, typically cylindrical, vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as either cinders, clinkers, or scoria around the vent to form a cone that often is symmetrical; with slopes between 30 and 40°; and a nearly circular ground plan. Most cinder cones have a bowl-shaped crater at the summit. Mechanics of eruption Cinder cones range in size from tens to hundreds of meters tall and often have a bowl-shaped crater at the summit. They are composed of loose pyroclastic material (cinder or scoria), which distinguishes them from ''spatter cones'', which are composed of agglomerated volcanic bombs. The pyroclastic material making up a cinder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landforms Of Veracruz
A landform is a natural or anthropogenic land feature on the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills, mountains, canyons, and valleys, as well as shoreline features such as bays, peninsulas, and seas, including submerged features such as mid-ocean ridges, volcanoes, and the great ocean basins. Physical characteristics Landforms are categorized by characteristic physical attributes such as elevation, slope, orientation, stratification, rock exposure and soil type. Gross physical features or landforms include intuitive elements such as berms, mounds, hills, ridges, cliffs, valleys, rivers, peninsulas, volcanoes, and numerous other structural and size-scaled (e.g. ponds vs. lakes, hills vs. mountains) elements including various kinds of inland and oceanic waterbodies and sub-surface features. Mountains, hills, plateaux, and plains are t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Ranges Of Mexico
The geography of Mexico describes the geographic features of Mexico, a country in the Americas. Mexico is located at about 23° N and 102° W in the southern portion of North America. From its farthest land points, Mexico is a little over in length. Mexico is bounded to the north by the United States (specifically, from west to east, by California, Arizona, New Mexico, and Texas), to the west and south by the Pacific Ocean, to the east by the Gulf of Mexico, and to the southeast by Belize, Guatemala, and the Caribbean Sea. The northernmost constituent of Latin America, it is the most populous Spanish-speaking country in the world. Mexico is the world's 13th largest country, three times the size of Texas. Almost all of Mexico is on the North American Plate, with small parts of the Baja California Peninsula in the northwest on the Pacific and Cocos Plates. Some geographers include the portion east of the Isthmus of Tehuantepec including the Yucatán Peninsula within North Amer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Tuxtlas
Los Tuxtlas is a region in the south of the Mexican state of Veracruz. Politically it refers to four municipalities: Catemaco, San Andrés Tuxtla, Santiago Tuxtla and Hueyapan de Ocampo. It also refers to a high complex natural ecosystem, an isolated volcanic mountain range next to the Gulf of Mexico, home to the northern edge of tropical rainforest in the Americas. Although seriously deforested, most of it is under protection as the Los Tuxtlas Biosphere Reserve, which stretches over eight municipalities, centering on the four mentioned above. The area's early history was influenced by the Olmecs but had its own trajectory. In the colonial period, the population became a mix of indigenous, African and European. For all its history until the present, it has been rural and agricultural. Today one of its notable crops is tobacco. However, conservation efforts since the 1970s have promoted ecotourism, especially in Catemaco. Geography and environment Topography The Sierra de Los Tux ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Ecoregions In Mexico
The following is a list of ecoregions in Mexico as identified by the World Wide Fund for Nature (WWF). A different system of ecoregional analysis is used by the Commission for Environmental Cooperation, a trilateral body linking Mexican, Canadian and United States environmental regime. Terrestrial ecoregions The terrestrial ecoregions of Mexico span two biogeographic realms - the Nearctic and Neotropic - which together constitute the entire biogeography of the Americas. Veracruz is the most biodiverse state with 10 ecoregions across 5 biomes and 2 realms. Chiapas comes in a close second with 10 ecoregions across 4 biomes in the same realm. By contrast, Morelos and Mexico City are the least biodiverse states with just 2 ecoregions each. Freshwater ecoregions Baja California Complex * Baja California Colorado River Complex * Colorado Delta * Sonoran Sinaloan Coastal Complex * Sinaloan Coastal Rio Bravo Complex * Rio Bravo * Pecos * Guzman * Mapimí * Cuatro Ciénegas * L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynastes Moroni
''Dynastes moroni'' is a large scarab beetle endemic to the Sierra de los Tuxtlas region in Mexico.Ratcliffe, B. C., R. D. Cave, and E. Cano. 2013. The dynastine scarab beetles of Mexico, Guatemala, and Belize (Coleoptera: Scarabaeidae). Bulletin of the University of Nebraska State Museum 27: 1-666. Taxonomy This beetle species was originally described as a subspecies, ''Dynastes hyllus moroni'', but subsequent genetic analyses clearly indicate that it is unrelated to '' Dynastes hyllus''; ''D. hyllus'' is sister to ''Dynastes grantii'', while ''D. moroni'' is sister to ''Dynastes maya ''Dynastes'' is a genus of large beetles belonging to the family Scarabaeidae. They occur in the Nearctic realm and in the Neotropical realm, from the United States to Brazil; [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered Species
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and invasive species. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration. Human activity is a significant cause in causing some species to become endangered. Conservation status The conservation status of a species indicates the likelihood that it will become extinct. Multiple factors are considered when assessing the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Craugastor Vulcani
''Craugastor vulcani'' is a species of frog in the family Craugastoridae. It is endemic to the Sierra de los Tuxtlas range in southern Veracruz state, Mexico. Its name refers to its type locality on the San Martin Tuxtla volcano. Common name Volcan San Martin rainfrog has been proposed for it. Description Adult males measure in snout–vent length lthough males as small 31 mm SVL had nuptial padsand adult females SVL. The tympanum is distinct. The fingers and toes bear well-developed discs. The fingers have lateral keels while the toes have lateral flanges and are moderately webbed. The eyelids have numerous medium-sized, rounded tubercles. Skin of the dorsum is rugose with groups of tubercles and short glandular folds, and typically with well-defined parietal and suprascapular ridges. The dorsal coloration is variable: olive brown, reddish brown, or dark smokey gray, and either uniformly colored or with an irregular middorsal yellow or orange stripe; some individuals are mo ... [...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] |
Tuxtla Quail-dove
The Tuxtla quail-dove (''Zentrygon carrikeri'') is a species of bird in the family Columbidae. It is endemic to southeastern Mexico. Taxonomy and systematics The Tuxtla quail-dove is monotypic. It and the purplish-backed quail-dove (''Zentrygon lawrencii'') of Central America were previously considered conspecific.Baptista, L. F., P. W. Trail, H. M. Horblit, P. F. D. Boesman, and E. F. J. Garcia (2020). Tuxtla Quail-Dove (''Zentrygon carrikeri''), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.tuqdov1.01 retrieved September 23, 2021 Description The Tuxtla quail-dove is long. The adult's head, neck, throat and breast are light bluish gray and the flanks light brown. It has a wide black malar stripe. Its back and wings are olive brown with little iridescence. Juveniles are darker all over with cinnamon edges to the upperparts' feathers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecoregion
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. Se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Landforms Of Veracruz")
.jpg "Click for more on -> Endemism")
