Document


Title

Fuel and fire characteristics in savanna-woodland of West Africa in relation to grazing and dominant grass type
Document Type: Journal Article
Author(s): Patrice Savadogo; Didier Zida; Louis Sawadogo; Daniel Tiveau; Mulualem Tigabu; Per Christer Oden
Publication Year: 2007

Cataloging Information

Keyword(s):
  • Africa
  • annual plant
  • backfire
  • Burkina Faso
  • climatology
  • dead fuels
  • fire behavior model
  • fire intensity
  • fire management
  • flame length
  • fuel loading
  • fuel management
  • fuel moisture
  • grasses
  • grassland
  • grazing
  • headfires
  • perennial plant
  • pyric herbivory
  • range management
  • rate of spread
  • residence time
  • savannas
  • size classes
  • statistical analysis
  • temperature
  • weather variables
  • West Africa
  • wind
Region(s):
  • International
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 8712
Tall Timbers Record Number: 22199
TTRS Location Status: In-file
TTRS Call Number: Journals-I
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

Fuel characteristics, fire behaviour and temperature were studied in relation to grazing, dominant grass type and wind direction in West African savanna-woodland by lighting 32 prescribed early fires. Grazing significantly reduced the vegetation height, total fuel load, and dead and live fuel fractions whereas plots dominated by perennial grasses had higher values for vegetation height, total fuel load and the quantity of live fuel load. Although fire intensity remained insensitive (P > 0.05) to any of these factors, fuel consumption was significantly (P = 0.021) reduced by grazing, rate of spread was faster in head fire (P = 0.012), and flame length was shorter in head fire than back fire (P = 0.044). The average maximum temperature was higher (P < 0.05) on non-grazed plots, on plots dominated by annual grasses, on plots subjected to head fire, and at the soil surface. Lethal temperature residence time showed a nearly similar trend to fire temperature. Wind speed and total fuel load were best predictors of fire behaviour parameters (R2 ranging from 0.557 to 0.862). It can be concluded that grazing could be used as a management tool to modify fire behaviour, back fire should be carried out during prescribed burning to lower fire severity, and the fire behaviour models can be employed to guide prescribed early fire in the study area.

Online Link(s):
Citation:
Savadogo, Patrice; Zida, Didier; Sawadogo, Louis; Tiveau, Daniel; Tigabu, Mulualem; Oden, Per Christer. 2007. Fuel and fire characteristics in savanna-woodland of West Africa in relation to grazing and dominant grass type. International Journal of Wildland Fire 16(5):531-539.