This species has a restricted distribution in the coastal mountains of Jalisco in Mexico. Localised logging occurs, but no significant declines have been reported.
Distribution
Endemic to Mexico: Jalisco, in the NW part of the Sierra Madre del Sur, on the Pacific slope, mainly in the Sierra de Cuale (Sierra el Tuito) and S of Villa Purificación
Habitat and Ecology
This species generally occurs at altitudes between 800-1,200(-1,650) m a.s.l. in mountainous terrain on deep, acidic soils derived from granitic rocks. The climate is subtropical, with a 5-6 month dry season from December to May and annual precipitation from 1,000-1,500 mm depending on altitude and exposition. Pinus jaliscana is a local constituent of pine or pine-oak forests with a limited extent in most localities known so far. More common and widespread species that grow with it are P. maximinoi and P. oocarpa, and at slightly higher altitudes also P. douglasiana. Several species of Quercus are often codominant, Clusia salvinii is also common.
Human Uses
This species is logged at a local level due for construction and house building (Monroy-Sias et al. 2016). It is not known to be in cultivation. There are currently experimental plots grown in Argentina, Brazil, Colombia, South Africa and Mexico (Dvorak et al. 2000).
Conservation Status
Global Status
Near Threatened
Global Rationale
The extent of occurrence (EOO) and area of occupancy (AOO) of Pinus jaliscana, as presently known, are well below the thresholds for Endangered. Using the Rapoport method of calculating locations/populations with the ArcView GIS mapping tool developed at RBG Kew, based on comprehensive sampling of herbarium collection data, there are five locations, two of these quite disjunct. However, there is at present no evidence of a significant decline despite reports of localised logging with its associated impacts such as erosion and increased fire (Monroy-Sias et al. 2016). The species is therefore listed as Near Threatened as it almost qualifies for a threatened listing under criteria B1ab(iii,v)+2ab(iii,v)
Conservation Actions
No conservation areas are established in the area where this pine species has been found. Some forests where this species occcurs and where it is being logged do have harvest plans enforced at a local level (Monroy-Sias et al. 2016).
References and further reading
Dvorak, K.S., Gutiérrez, E.A., Hodge, G.R., Romero, J.L., Stock, J. and Rivas, O. 2000. Pinus jaliscana. In: College of Natural Resources, NCSU (ed.), Conservation & Testing of Tropical & Subtropical Forest Tree Species by the CAMCORE Coperative, pp. 87-94. Raleigh, NC. USA
Farjon, A. and Styles, B. 1997. Pinus (Pinaceae). Flora Neotropica. Monograph 75. The New York Botanical Garden, New York.
Monroy-Sais, S., Castillo, A., García-Frapolli, E. and Ibarra-Manríquez, G., 2016. Ecological variability and rule-making processes for forest management institutions: a social-ecological case study in the Jalisco coast, Mexico. International Journal of the Commons, 10(2).
