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Jubaed chilensis (Mol) Baillon is the world's southernmost palm tree. It grows as an endemic species in Chile in sporadic forests, between 30° and 37° south, mainly in settings of the coastal mountains of the country's mediterranean zone. The hills around the cities of Valparaiso and Vina del Mar have supported the pressure and the advance of the population, causing strong impacts on the humid sclerophyllous remnants of the plant groups of a century ago. This habitat contained several hundred palm trees that have been disappearing due to multiple effects. The results of a research that started ten years ago to study the regression process of these forests and of the Chilean palrn are presented. Cutting, cattle raising, getting firewood and making charcoal, the advance of housing toward the hills due to the growth of coastal cities, road construction, and the recurrence of forest fires since 1960 have been the most recurrent impacts for the present condition of these ecosystems. On the other hand, the constant exploitation of the palm for its fiuits and the use of its long leaves have affected it greatly. It supported an enormous impact when in 1996 there was much land moving on these slopes to build a highway, eliminating andlor transferring about 500 palms. In 1999 space was made also in that area to build a gas duct for Vina del Mar. This again meant the loss of dozens of palms, and to this day the summer fires continue affecting these palm groves.

investigaciones geográficas

Degradacion de ecosistemas de la palma más austral del mundo (Jubaea Chilensis) acelerada por los fuegos estivales en los cordones litorales de Valparaíso y Viña del Mar (32°50'-33° 02'S). Un caso sostenido de perturbación del paisaje