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      Biosphere Reserve Information



  General Description   The State of Hidalgo delimits physiographic provinces of Sierra Madre Oriental and Eje Neovolcánico. Its irregular boundaries delimit the Biosphere Reserve, although the latter is mainly situated within the Sierra Madre Oriental physiographic province. The shape of the site is quite long and irregular.
The mild climate is related to altitude. While the mountains to the east and northeast reach 1 800 to 2 600 m, in the plain the elevation is approximately 1 200 to 1 300 m. The factors contributing to higher temperatures in the Barranca are the latitude and the adiabatic gradient.
The site includes the municipalities of Acatlán, Atotonilco el Grande, Eloxochitlán, Huasca de Ocampo, Metztitlán, San Agustín Metzquititlán, Zacualtipán de Ángeles y Metepec. They include 135 communities and ranchers: 78 from Metztitlán, 10 from Eloxochitlán, 13 from St. Augustine Metzquititlán, 10 Huascar de Ocampo, 11 Atotonilco el Grande, 13 Acatlan, and 3 from Zacualtipán de Ángeles y Metepec.
There are five communities within the biosphere reserve that are considered as indigenous, since more than 25% of their population speaks the native Ńha-Ńhu language. They are located in the municipality of Metztitlán and belong to the ethnic group Otomi.
  Major ecosystem type   Xeric or desert scrublands
  Major habitats & land cover types   desert scrublands, tropical deciduous forest, sub-mountain scrublands, conifer forest, grassland and riparian vegetation.
  Location   98° 23’ 00 and 98° 57’ 08 longitud W and 20° 14’ 15 and 20° 45’ 26 latitud N
  Area (hectares)    
  Total   96,043
  Core area(s)   12,474.13
  Buffer zone(s)   83,568.81
  Transition area(s) when given  
  Altitude (metres above sea level)   920 to 2600
  Year designated   2006
  Administrative authorities   Salvador Montes Quintero

Last updated: 08/03/2011

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