Sierra Madre del Sur pine-oak forests
|Sierra Madre del Sur pine-oak forests|
|Biome||Tropical and subtropical coniferous forests|
|Borders||Balsas dry forests, Tehuacan Valley matorral, Sierra Madre de Oaxaca pine-oak forests and Southern Pacific dry forests|
|Area||61,200 km2 (23,600 sq mi)|
The pine-oak forests occupy the higher slopes of the Sierra Madre del Sur range, which runs east and west parallel to Mexico's southern Pacific Coast. The forests are surrounded by tropical dry forests at lower elevations; the Jalisco dry forests to the west; the Balsas dry forests to the north, in the basin of the Balsas River, and the Southern Pacific dry forests to the south and east along the Pacific coast.
The chief plant communities are oak forests, cloud forests, pine-oak forests, and fir forests. The plant communities vary with elevation and rainfall.
The oak forests occur between 1900 and 2500 metres elevation (6,200-8,200 feet). Quercus magnoliifolia and Quercus castanea are the predominant tree species, with individuals of Pinus montezumae. Orchids and bromeliads grow as epiphytes.
Pine-oak forests grow at 2400–2500 metres (7,900-8,200 feet). Predominant trees are Quercus magnoliifolia, Q. castanea, Q. obtusata, Pinus herrerai, P. pseudostrobus, P. pringlei, P. ayacahuite, P. rzedowskii, and Arbutus xalapensis.
Fir forests grow above 3,000 metres (9,800 feet).
- Hoekstra, J. M.; Molnar, J. L.; Jennings, M.; Revenga, C.; Spalding, M. D.; Boucher, T. M.; Robertson, J. C.; Heibel, T. J.; Ellison, K. (2010). Molnar, J. L., ed. The Atlas of Global Conservation: Changes, Challenges, and Opportunities to Make a Difference. University of California Press. ISBN 978-0-520-26256-0.
- "Sierra Madre del Sur pine-oak forests" WWF. Accessed 26 April 2105. 
- "Sierra Madre del Sur pine-oak forests". Terrestrial Ecoregions. World Wildlife Fund.
- World Wildlife Fund (2001). "Sierra Madre del Sur pine-oak forests". WildWorld Ecoregion Profile. National Geographic Society. Archived from the original on 2010-03-08.
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