Document


Title

Fire and succession in the ultramafic maquis of New Caledonia
Document Type: Journal
Author(s): S. McCoy ; T. Jaffre ; F. Rigault ; J. E. Ash
Publication Year: 1999

Cataloging Information

Keyword(s):
  • charcoal
  • decay
  • dendrochronology
  • distribution
  • fire frequency
  • Gymnostoma
  • ignition
  • iron
  • litter
  • mosaic
  • New Caledonia
  • New Caledonia
  • nitrogen
  • Oceania
  • post fire recovery
  • regeneration
  • shrubs
  • size classes
  • soils
  • succession
  • succession
  • swamps
  • ultramafic vegetation
  • vegetation surveys
  • wildfires
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 44883
Tall Timbers Record Number: 20318
TTRS Location Status: In-file
TTRS Call Number: Fire 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

Aim This study investigates the role of fire and post fire succession in determining the structure and composition of vegetation on ultramafic iron crust soils.Location The study was conducted in the Plaines des Lacs region of southern New Caledonia.Methods A survey was made of eighty-eight sites, recording floristic composition, trunk size-class distributions, regeneration after fire, growth ring counts of Dacrydium araucarioides (Podocarpaccae) and historical information on past fires. Floristic data was ordinated using multidimensional scaling and an index of succession based on structural and historical information. A transition matrix model was developed to predict the effect of fire frequency on vegetation composition.Results The vegetation is undergoing postfire succession from maquis to forest, after about 75 years, and eventually to rainforest. Gymnostoma deplancheanum has a key role as an early colonist that produces shade, the bulk of the litter, and forms nitrogen fixing nodules with Frankia sp. However, the open canopy of Gymnostoma and slow litter decay creates flammable conditions. Though many species resprout from rootstocks, only thirty-nine persist through fires while 114 others colonize at later successional stages, as the litter layer and shade increase. Some early successional species are later excluded but these can persist locally in swamps and on rocky hill tops. Forest and rainforest are less flammable and the matrix model suggests that ignition frequency has a critical role in determining the abundance of maquis or forest.Main conclusions The vegetation mosaic represents a post fire succession from open maquis to forest. Palynological and charcoal records from late Pleistocene sediments suggest that fire has been a major factor determining the development of maquis vegetation since before the arrival of humans. Recently, frequent fires have converted much of the vegetation to maquis, posing a threat to some forest species and largely eliminating rainforest from iron crust soils. © 1999 Blackwell Science Ltd. Abstract reproduced by permission.

Online Link(s):
Citation:
McCoy, S., T. Jaffre, F. Rigault, and J. E. Ash. 1999. Fire and succession in the ultramafic maquis of New Caledonia. Journal of Biogeography, v. 26, no. 3, p. 579-594.