Document


Title

Cloud forest dynamics in the Mexican neotropics during the last 1300 years
Document Type: Journal Article
Author(s): B. L. Figueroa-Rangel; K. J. Willis; M. Olvera-Vargas
Publication Year: 2010

Cataloging Information

Keyword(s):
  • agriculture
  • archaeological sites
  • charcoal
  • competition
  • conservation
  • conservation
  • distribution
  • disturbance
  • fire management
  • forest ecology
  • forest management
  • grazing
  • histories
  • humidity
  • logging
  • logging
  • Mexico
  • palaeoecology
  • paleoecology
  • pollen
  • tropical forests
  • wildfires
Topic(s):
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 48632
Tall Timbers Record Number: 24807
TTRS Location Status: Not in file
TTRS Call Number: Not in File
TTRS Abstract Status: Okay, Fair use, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.

Description

Key questions for understanding the resilience and variability of Mexican Neotropical cloud forest assemblages in current and future climate change include: How have human disturbances and climate change affected the dynamics of the cloud forest assemblage? What are the predominant processes responsible for its present day composition and distribution? Are the current conservation strategies for the cloud forest in accordance with preserving its natural variability through time? In this study, the temporal dynamics of the cloud forest in west-central Mexico over the last ~1300 years were reconstructed using palaeoecological techniques. These included analyses of fossil pollen, microfossil charcoal, and sediment geochemistry. Results indicated that a cloud forest assemblage has been the predominant vegetation type in this region over the last ~1300 years. During this time, however, there have been changes in the vegetation with an apparent expansion of cloud forest from ~832 to 620 cal years BP and a decline from 1200 to 832 cal years BP. Climate change (intervals of aridity) and human disturbances through anthropogenic burning appear to have been the main factors influencing the dynamics of this cloud forest. The spatial heterogeneity reported for high-altitude forests in this region, in concert with high beta diversity, appears to be a manifestation of the high temporal variability in species composition for these forests. Greater turnover in cloud forest taxa occurred during intervals of increased humidity and is probably representative of a higher temporal competition for resources among the cloud forest taxa. The present results support the current protection scheme for cloud forests in west-central Mexico where areas are kept in exclusion zones to avoid timber extraction, grazing, and agriculture; this will maintain diversity within these forests, even if there are only a few individuals per species, and enable the forests to retain some resilience to current and future climate change. © 2009 Blackwell Publishing Ltd.

Citation:
Figueroa-Rangel, B. L., K. J. Willis, and M. Olvera-Vargas. 2010. Cloud forest dynamics in the Mexican neotropics during the last 1300 years. Global Change Biology, v. 16, no. 6, p. 1689-1704. 10.1111/j.1365-2486.2009.02024.x.