Pinus caribaea var. bahamensis(Grisebach) W.H.Barrett & Golfari–Bahamas pine, Caicos pine (The Bahamas, Turks and Caicos Islands)
Pinus caribaea var. hondurensis(Sénéclauze) W.H.Barrett & Golfari–Honduras pine, Nicaragua pine (states of Quintana Roo and the Yucatán in Mexico, Belize, Guatemala, El Salvador, Honduras, Nicaragua). Treated a separate species, Pinus hondurensisSénéclauze, by some authors.[3] It differs markedly from vars. caribaea and bahamensis in having larger cones with a prominent transverse ridge on the apophyses and stouter spike-like umbo (rather than small prickles),[3][4][5] and in the seedlings retaining glaucous single juvenile leaves for nine months to a year or more, as opposed to three to four months in the other two varieties.[5] The seedling growth rate is also significantly faster.[5]
Distribution
It has been proposed that the pines of Australes subsection (of which Caribbean pine is part) arrived to the Caribbean basin from the southeastern United States.[6] Regarding the population in the Bahamas, it has been proposed that this species emigrated into the region from Florida four or five thousand years ago, long after the end of the Ice Age, as the climate became wetter. Based on fossil species assemblages it is believed that the environment on the Bahamas was much less forested and a dry savannah during the glacial maximum some 18,000 years ago when the sea level was some 120 metres (390 feet) lower than it is today.[7][8]
Paleoclimatic[9] and genetic data[10] have been used to propose that P.caribaea ultimately originated in Central America. According to chloroplast genetic data, P.caribaea lineages colonized the Caribbean islands from populations in Central America at least twice (one leading to Cuban populations and another leading to the populations on the Bahamas).[10]
Ecology
Periodic wildfires play a major role in the distribution of this species; this tree regenerates quickly and aggressively, replacing broadleaf trees after fires. In zones without fires, the succession continues and the pine forest is replaced by tropical broadleaf forest. The young pines require bright sunlight to grow, and are resistant to fire once they mature.[11][12]
Lumber and pulpwood from this tree shipped to Florida is the main export of the Abaco Islands.[16]
The Uverito forest in Venezuela, located between the states of Anzoátegui and Monagas, is the largest artificial forest in the world planted by man, with around 600,000 hectares of Caribbean pine forest plantations.
1 2 Businský, Roman (2008). "The Genus Pinus L., Pines – contribution to knowledge". Acta Pruhoniciana (in Czech). 88: 1–126.
↑ Loock, E. E. M. (1950). The Pines of Mexico and British Honduras. pp.210–213.
1 2 3 Lückhoff, H. A. (1964). "The natural distribution, growth and botanical variation of Pinus caribaea and its cultivation in South Africa". Annale Universiteit van Stellenbosch. 39 (1): 3–108.
↑ Adams, D.C., Jackson, J.F. (1997). A phylogenetic analysis of the southern pines (Pinus subsect. Australes Loudon): biogeographical and ecological implications. Proceedings of the Biological Society of Washington 110: 681–692.
↑ Dvorak, W. S., Hamrick, J. L. &Gutierrez E. A. (2005). The origin of Caribbean pine in the seasonal swamps of the Yucatán. International Journal of Plant Sciences 166: 985-994.
1 2 Jardón-Barbolla, L., Delgado-Valerio, P., Geada-López, G., Vázquez-Lobo, A., & Pinero D. (2011). Phylogeography of Pinus subsection Australes in the Caribbean Basin. Annals of Botany 107: 229-241.
↑ Bower, Paul (1997). "Abaco Islands". In Johnston, Bernard (ed.). Collier's Encyclopedia. Vol.I A to Ameland (Firsted.). New York, NY: P.F. Collier. p.4.
This page is based on this Wikipedia article Text is available under the CC BY-SA 4.0 license; additional terms may apply. Images, videos and audio are available under their respective licenses.