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Box 7.7 The Polylepis tarapacana chronologies: The highest
elevation tree-ring records worldwide
Polylepis , a genus from the Rosaceae family, includes several woody species
of small- to middle-sized trees that grow at very high altitudes in the tropi-
cal Andes of South America (Kessler 1995 ) . Polylepis tarapacana , adapted
to drier and colder conditions than other species of the same genus, reaches
the highest elevation of tree growth in the world. On the slopes of the high
volcanoes in Bolivia and along the Bolivian-Chilean-Argentinean border, P.
tarapacana grows between 4100 and 5200 m elevation.
Box Fig. 7.13 Polylepis tarapacana chronologies in the Bolivian Altiplano and adja-
cent areas of Chile and Argentina. HUA: Huarinka; SER: Serke; NIC: Cerro Nicolás;
ANA: Analasjchi; NAS: Nasahuento; SAJ: Sajama; GUA: Guallatire; TUN: Tunupa; CAQ:
Caquella; TAP: Tapachilca; SON: Soniquera; UTU: Uturun-co; GRA: Cerro Granadas
 
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