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Sierra Madre Oriental pine-oak forests (WWF
Oak and pine forest in the Chisos Mountains, Big Bend National Park, Texas
Source of bioregions data: Olson, D. M. and E. Dinerstein. The Global 200: Priority ecoregions for global conservation. (PDF file) Annals of the Missouri Botanical Garden 89:125-126.
Distinctiveness (1=highest,4=lowest): 1
The high altitude and fragmentation of this ecoregion produces islands of temperate climate within the surrounding desert or tropical habitats. This produces a high degree of endemism. The ecoregion contains the highest diversity of Agave species.
Conservation Status (1=most endangered, 5=most
intact): 1 (critical)
Nearly all native pine-oak forests have been logged and over 60% have been converted to agricultural use.*
Some views from the ecoregion
Big Bend National Park, western Texas
(Left) View of Chisos Mountains from Chihuahuan desert. (right) View of Chihuahuan desert from the Chisos Mountains hires hires
Views of oak and pine forests in the Chisos Mountains hires hires hires hires hires
(Left) Agave flowers. (center and right) Ephemeral pools hires hires hires
* Source: https://www.worldwildlife.org/ecoregions/na0303