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vol.73 número4Biodiversidad del complejo de artrópodos asociados al follaje de la vegetación del norte de Chile, II regiónHistoria natural de Emerita analoga (Stimpson) (Anomura, Hippidae) en una playa arenosa del norte de Chile índice de autoresíndice de materiabúsqueda de artículos
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Revista chilena de historia natural

versión impresa ISSN 0716-078X

Resumen

NEIRA, EDUARDO  y  LARA, ANTONIO. Development of tree-ring chronologies for alerce (Fitzroya Cupressoides) in Contao and Mirador, Chile. Rev. chil. hist. nat. [online]. 2000, vol.73, n.4, pp.693-703. ISSN 0716-078X.  http://dx.doi.org/10.4067/S0716-078X2000000400012.

Two ring-width chronologies were developed using samples from alerce (Fitzroya cupressoides (Molina) Johnston). These were collected from two different sites; Contao, in the Andean Range and Mirador, in the Coastal Range. The series from the each site were cross-dated and COFECHA program was used to verify this process. Once correctly cross-dated, ARSTAN program was used to build up a chronology for each site (Contao and Mirador). These chronologies were compared with other existing chronologies. Contao presented the best statistics when compared to the other chronologies. Differences between chronologies from the Coastal and Andes Ranges were detected mainly during the last 150 years. Before this period, chronologies were quite similar. Differences are attributed to factors other than climate, such as human-set fires and logging. Correlations, with climatic variables revealed similar trends to those reported in previous work. Results showed significant correlations with the previous summer's growing conditions; negative correlation with temperature and positive with precipitation

Palabras clave : dendrochronology; alerce; Fitzroya cupressoides; disturbance; fire.

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