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Oriental Basin
The Oriental Basin, also known as the Libres-Oriental Basin, Oriental-Serdán Basin or San Juan Plains (in Spanish, ''Llanos de San Juan'' or ''Cuenca de Libres-Oriental)'', is an endorheic basin in east-central Mexico. It covers an area of 4,958.60 square kilometers, lying in the states of Puebla, Tlaxcala, and Veracruz. The climate is temperate and subtropical, semi-arid to subhumid, with summer rains. Average annual temperature 12-16 °C, and annual total precipitation is 400–800 mm. The Trans-Mexican Volcanic Belt pine-oak forests ecoregion covers the mountains surrounding the basin to the west, north, and east. The mountains to the north and west, including the Cofre de Perote volcano, leave the valley in a rain shadow, and the xeric shrublands of the Tehuacán Valley matorral ecoregion occupies the center of the basin, and extend south into the Tehuacán and Cuicatlán valleys. Vegetation includes pine-oak forests and pine-fir forests at higher elevations, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quechulac Silverside
''Poblana squamata'', the Quechulac silverside, is a species of neotropical silverside Endemism, endemic to Mexico. It is only found in the volcanic crater lake of Oriental_Basin#Maar_lakes, Quechulac which is southeast of Alchichica, Puebla State, Mexico at an elevation of . It was first Species description, described by Jose Álvarez del Villar in 1950 from Type (biology), types collected from the lake. The lake is approximately half a kilometre square and deep. The fish only inhabit some areas of the lake, avoiding the steep slopes and preferring areas where Cyperaceae, sedges grow. Due to this extremely small habitat area, the species is listed as Critically Endangered on the IUCN Red List. While the lake is not affected by human alteration, there is danger of overfishing. It prefers pelagic zone, pelagic (open water) areas. Its diet is omnivorous and consists of crustaceans. algae, insects, and sometimes its own larvae. References Poblana, squamata Endemic fish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
