Climate series in rings of Aspidosperma polyneuron Müll.Arg. y Anacardium excelsum (Bertero ex Kunth) Skeels

Abstract

The growth dynamics of Aspidosperma polyneuron and Anacardium excelsum species that grow in the tropical dry forest of the Cesar department were analyzied. We used dendrochronological techniques and regression models (Clench, Negative Exponential, Logistic and Gompertz). The results obtained show that A. polyneuron rings allowed to build a chronology of 161 years (1854-2014) and the rings of A. excelsum a chronology of 128 years (1887-2014). The growth of A. polyneuron showed a positive growth with spontaneous rain in the dry months and A. excelsum with the rainiest months. Temperature and SOI did not show correlations with growth. The rings of A. polyneuron and A. excelsum documented local climatic variations, but not global as SOI. According to the regression models, the two species will take more than 100 years to reach the maximum diameter, so it is necessary to think about the conservation of the species and the avoided deforestation.