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Type: Journal Article
Author(s): Gabriela B. Nardoto; M. M.dC. Bustamante; A. S. Pinto; C. A. Klink
Publication Date: 2006

Nutrient resorption efficiency of woody plants, litterfall and nutrient fluxes were investigated in a burned and an unburned cerrado plot between October 1997 and September 1999. A large experiment (Fire Project, Brasýlia, Brazil) on the effects of prescribed burnings was initiated in 1992. Cerrado plots were delimited and subjected to different fire regimes. Seasonal trend of litterfall was similar in both plots but the production in the burned plot was 42.2 gm-2 y-1 before the fourth prescribed fire (September 1998) and decreased by 22% 1 y after burning while in the unburned plot it was around 230 gm-2 y-1. Although nutrient concentrations in leaf litter were higher in the burned plot, the nutrient fluxes were 60-80% lower than in the unburned plot. Nutrient use efficiency (ecosystem level) was 4373 for P and 137 for N. Measured resorption efficiency for 10 cerrado species ranged from 14.5 to 37.2% for N and from 40 to 70.4% for P and in general, there were no differences between plots. N is in short supply, partly because of fire history, but the results, both at ecosystem and species levels (mean N/P in fresh leaves was 18), indicated a stronger limitation by P than by N. © 2006 Cambridge University Press.

Citation: Nardoto, G. B., M. M. d. C. Bustamante, A. S. Pinto, and C. A. Klink. 2006. Nutrient use efficiency at ecosystem and species level in savanna areas of Central Brazil and impacts of fire. Journal of Tropical Ecology, v. 22, no. 02, p. 191-201.

Cataloging Information

Topics:
Regions:
Keywords:
  • Brazil
  • cerrado
  • cerrado
  • fire management
  • fire regimes
  • litter
  • litterfall
  • nitrogen
  • nitrogen
  • nutrient content
  • nutrients
  • phosphorus
  • phosphorus
  • precipitation
  • range management
  • resorption
  • savanna
  • savannas
  • South America
  • woody plants
Tall Timbers Record Number: 27658Location Status: Not in fileCall Number: Not in FileAbstract Status: Okay, Fair use, Reproduced by permission
Record Last Modified:
Record Maintained By: FRAMES Staff (https://www.frames.gov/contact)
FRAMES Record Number: 50928

This bibliographic record was either created or modified by Tall Timbers 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 Tall Timbers.