Capacity of old trees to respond to environmental change

J Integr Plant Biol. 2008 Nov;50(11):1355-64. doi: 10.1111/j.1744-7909.2008.00746.x.

Abstract

Atmospheric carbon dioxide [CO2] has increased dramatically within the current life spans of long-lived trees and old forests. Consider that a 500-year-old tree in the early twenty-first century has spent 70% of its life growing under pre-industrial levels of [CO2], which were 30% lower than current levels. Here we address the question of whether old trees have already responded to the rapid rise in [CO2] occurring over the past 150 years. In spite of limited data, aging trees have been shown to possess a substantial capacity for increased net growth after a period of post-maturity growth decline. Observations of renewed growth and physiological function in old trees have, in some instances, coincided with Industrial Age increases in key environmental resources, including [CO2], suggesting the potential for continued growth in old trees as a function of continued global climate change.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Review

MeSH terms

  • Carbon Dioxide / toxicity*
  • Climate*
  • Ecosystem
  • Environmental Monitoring
  • Time Factors
  • Trees / drug effects*
  • Trees / growth & development*

Substances

  • Carbon Dioxide