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Fire and cyclone damage to woody vegetation on the north coast of the Northern Territory, Australia

Citation

Bowman, DMJS and Panton, WJ, Fire and cyclone damage to woody vegetation on the north coast of the Northern Territory, Australia, Australian Geographer, 25, (1) pp. 32 - 35. ISSN 0004-9182 (1994) [Refereed Article]

DOI: doi:10.1080/00049189408703096

Abstract

Tree stem (>2 m tall) mortality was assessed following a late dry-season wildfire across a seasonally flooded elevation gradient at Workshop Jungle, near Darwin, in the Northern Territory of Australia. For all species combined, dead stems had significantly smaller diameter at breast height (dbh) than living stems. Assessment of tree-stem damage following a tropical cyclone at Cobourg Peninsula, NT, revealed that damaged stems had significantly greater dbh than undamaged stems for all tree species sampled across a boundary between monsoon rainforest and savanna. A greater proportion of stems were damaged by the cyclone than by the fire (28 per cent as against 18 per cent), although there were considerable between-community differences in the proportion of damaged stems at the two sites. The fire caused little impact (<10 per cent) on total basal area of three different forest communities on the elevation gradient at Workshop Jungle. The cyclone was found to cause >50 per cent damage to total basal area of three different communities on Cobourg Peninsula. It is suggested that the combination of a cyclone followed by an intense fire in storm debris could potentially destroy a monsoon rainforest through its impact on all tree-size classes. This may explain why some monsoon rainforests rapidly contracted following Cyclone Tracy that destroyed the city of Darwin on Christmas Day, 1974.

Item Details

Item Type:Refereed Article
Research Division:Environmental Sciences
Research Group:Ecological applications
Research Field:Ecosystem function
Objective Division:Environmental Management
Objective Group:Fresh, ground and surface water systems and management
Objective Field:Assessment and management of freshwater ecosystems
UTAS Author:Bowman, DMJS (Professor David Bowman)
ID Code:69151
Year Published:1994
Web of Science® Times Cited:20
Deposited By:Plant Science
Deposited On:2011-04-19
Last Modified:2011-06-07
Downloads:0

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