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Stand-replacing wildfires? :The incidence of multi-cohort and single-cohort Eucalyptus regnans and E. obliqua forests in southern Tasmania


Turner, PAM and Balmer, J and Kirkpatrick, JB, Stand-replacing wildfires? :The incidence of multi-cohort and single-cohort Eucalyptus regnans and E. obliqua forests in southern Tasmania, Forest Ecology and Management, 258, (4) pp. 366-375. ISSN 0378-1127 (2009) [Refereed Article]

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DOI: doi:10.1016/j.foreco.2009.04.021


The natural age structure of wet eucalypt forest has important implications for biodiversity conservation and the mode of wood production. Southern Tasmanian wet eucalypt forests were sampled to describe age class variation and to test the following hypotheses that relate to it: (1) Eucalyptus regnans stands are more likely to be single-cohort than Eucalyptus obliqua and mixed stands; (2) old-growth trees are associated with multi-cohort wet eucalypt forests; (3) the E. regnans stands are more multi-cohort than Victorian E. regnans stands. Data from 762 stands, all with either E. obliqua or E. regnans were analysed to determine how stand characteristics related to forest type and to the presence of old-growth trees. Over half the stands studied were multi-cohort. Stands with E. regnans had a lesser tendency towards multicohortness than stands lacking this species, although most old-growth stands, including those dominated by E. regnans, were multi-cohort. In contrast, most regrowth stands of all species combinations were single-cohort. The proportions of E. regnans stands that were multi-cohort were similar to some estimates from the same type of forest in Victoria. Modifications of forestry regimes in wet eucalypt forests could help to maintain the existence of these biodiverse multi-cohort forests in the landscape.

Item Details

Item Type:Refereed Article
Keywords:Wildfire; Multi-cohort forest; Stand replacing; Tasmania
Research Division:Environmental Sciences
Research Group:Environmental management
Research Field:Conservation and biodiversity
Objective Division:Environmental Management
Objective Group:Fresh, ground and surface water systems and management
Objective Field:Assessment and management of freshwater ecosystems
UTAS Author:Turner, PAM (Dr Perpetua Turner)
UTAS Author:Kirkpatrick, JB (Professor James Kirkpatrick)
ID Code:58099
Year Published:2009
Web of Science® Times Cited:49
Deposited By:Geography and Environmental Studies
Deposited On:2009-09-07
Last Modified:2010-04-13
Downloads:3 View Download Statistics

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