Document


Title

Short-term responses from controlled burning and intense fires in the forests of Western Australia
Document Type: Whole Book
Author(s): G. B. Peet ; J. McCormick
Publication Year: 1971

Cataloging Information

Keyword(s):
Australia; bark; crown fires; crown scorch; crowns; Eucalyptus diversicolor; Eucalyptus marginata; field experimental fires; fire control; fire injuries (plants); fire intensity; fire management; fire resistant plants; fire sensitive plants; flame length; flammability; forest management; fuel accumulation; fuel types; hardwood forests; jarrah; karri; litter; pine; pine forests; Pinus pinaster; Pinus radiata; sclerophyll forests; scrub; season of fire; seedlings; size classes; statistical analysis; trees; western Australia
Region(s):
International
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 38795
Tall Timbers Record Number: 13409
TTRS Location Status: In-file
TTRS Call Number: Fire File DDW
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

Summary ... 'This publication sets out short-term results from eleven experiments measuring responses to controlled burning in girth growth of pole-sized trees and crown damage to saplings. The experimental results were divided into the trees species, tree sizes, and intensity of the treatment fires. Fire intensity was described by Byram's formula I = Hwr. The experiments included four species, jarrah, karri, maritime pine and monterey pine, all of which are subjected to varying amounts of controlled burning in Western Australia. The fire intensities were within the limits normally used for controlled burning. For pole sizes they ranged from 13 to 27 B.T.U. per second per foot for jarrah, 22 to 29 for karri, 9 to 11 for maritime pine, and 4 to 5 for monterey pine. These fires failed to produce responses in girth growth over two- to four-year measurement periods. One experiment included treatment with intense fires for jarrah poles. Twenty per cent. of these trees were killed in spring and 27 per cent. in autumn. Most of the remainder developed 'dry-sides' and the area of this damage was related to bark thickness. Damage from the intense fires contrasted with the controlled-burnt poles where only one in 253 trees was killed, and there was little or no evidene of butt damage to the remainder. Subsequent girth growth of trees in the intense fire treatments was similar to the unburnt control trees. Small jarrah and karri saplins were susceptible to crown damage during controlled burning. Jarrah saplings less than nine feet (2.7m). high were damaged by 9 to 12 B.T.U. per second per foot, and saplings up to 13 feet (4m). high were damaged by 25 B.T.U. Karri saplings less than 19 feet (5.8m). high were killed by 20 to 30 B.T.U. but saplings 30 feet (9.1m.) high withstood 12 B.T.U. without butt damage or loss in girth growth. Controlled burning under pole-sized pines failed to produce responses in girth growth, but marked responses after intense fires which scorched the crowns. These responses were related to the length of green tip above the scorched crown.'

Citation:
Peet, G. B., and J. McCormick. 1971. Short-term responses from controlled burning and intense fires in the forests of Western Australia. Perth, Australia, W.R. Wallace, Conservator of Forests.