Evidence of volcanic activity in the growth rings of trees at the Tacana volcano, Mexico-Guatemala border
Por:
Carlon Allende, Teodoro, Luis Macias, Jose, Mendoza, Manuel E., Villanueva Diaz, Jose
Publicada:
1 ene 2020
Resumen:
Volcanic activity can have a significant effect on the growth and
survival of trees. The objective of our research was to analyze the
effects of the 1855-1856 eruption of the Tacana volcano and the ashfall
from the 1902 eruption of the Santa Maria volcano, Guatemala, on the
radial growth of trees at Tacana. Dendrochronological sampling was
carried out on sites covered by Pinus hartwegii Lindl., and a ring-width
chronology was built using 102 increment cores from 75 trees. The
ring-width chronology shows two statistically significant suppression
events. One of these events occurred from 1857 to 1868 and was
potentially caused by the historic eruption of Tacana (1855-1856). The
second suppression event occurred from 1903 to 1908, during which tree
growth was affected 1 year after the ashfall caused by the 1902 eruption
of Santa Maria. The growth suppression did not have the same magnitude
in all sampled trees and may be related to the thickness of the ash
layer deposited around each tree. For the first time, we show that tree
growth at Tacana is reduced by ashfall from volcanic eruptions. Our
results may contribute to the evaluation of risks associated with the
volcanic activity of the Tacana volcano.
Filiaciones:
Univ Nacl Autonoma Mexico, Unidad Michoacan, CONACYT Inst Geofis, Antigua Carretera Patzcuaro 8701, Morelia 58190, Michoacan, Mexico
Univ Nacl Autonoma Mexico, Unidad Michoacan, Inst Geofis, Antigua Carretera Patzcuaro 8701, Morelia 58190, Michoacan, Mexico
Univ Nacl Autonoma Mexico, Ctr Invest Geog Ambiental, Antigua Carretera Patzcuaro 8701, Morelia 58190, Michoacan, Mexico
Inst Nacl Invest Forestales Agr & Pecuarias, Km 6-5 Margen Derecha Canal Sacramento, Durango 35140, Mexico
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