Endemic to northern Mexico where many years of logging has caused a decline of mature individuals.
Distribution
Mexico: mainly in southern Nuevo León, a few localities in southern Coahuila, Zacatecas and possibly San Luís Potosí.
Populations are likely to be undergoing some decline due to logging.
Habitat and Ecology
Similar as for the species, but generally in drier forests.
Human Uses
Used for timber for light construction
Conservation Status
Global status
Vulnerable B1ab(ii,iii,v)+2ab(ii,iii,v)
Global rationale
The extent of occurrence is estimated to be 6,685 km² and there are 3–4 locations. The area of occupancy of 768km² was calculated on the basis of comprehensive locality data based on herbarium collections. A grid width of 8 km was chosen as this is a forest forming taxon, it may be on the optimistic side given the decline of large trees reported in the 1980s (Perry, 1991). Its EOO and AOO fall within the threshold for Vulnerable and there is continuing decline due to logging.
Global threats
Logging over many years has caused a decline of mature trees in many of the more accessible stands, reducing these to a few individuals in small, scattered groups (Perry, 1991).
Conservation Actions
Forests with this taxon should be managed more sustainably, allowing plenty of time for regeneration to take effect
References and further reading
Barton, A.M., T.W. Swetnam & Baisan, C.H. (2001). Arizona pine (Pinus arizonica) stand dynamics: local and regional factors in a fire-prone madrean gallery forest of Southeast Arizona, USA. Landscape Ecology 16(4): 351-369.
Farjon, A. & B.T. Styles. (1997). Pinus (Pinaceae). Flora Neotropica Monograph 75. New York, NY: The New York Botanical Garden.
Farjon, A. (2013). Pinus arizonica var. stormiae. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. <www.iucnredlist.org>. Downloaded on 13 July 2013.
Perry, J.P. (1991). The Pines of Mexico and Central America. Timber Press, Portland.
