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Impacts of fire on forest age and runoff in mountain ash forests

Wood, S, Beringer, J., Hutley, Lindsay, Mcguire, D, Vandijk, A and Kilinc, M (2008). Impacts of fire on forest age and runoff in mountain ash forests. Functional Plant Biology: an international journal of plant function,35(6):483-492.

Document type: Journal Article

IRMA ID 73195523xPUB34
Title Impacts of fire on forest age and runoff in mountain ash forests
Author Wood, S
Beringer, J.
Hutley, Lindsay
Mcguire, D
Vandijk, A
Kilinc, M
Journal Name Functional Plant Biology: an international journal of plant function
Publication Date 2008
Volume Number 35
Issue Number 6
ISSN 1445-4408   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-49149085318
Start Page 483
End Page 492
Total Pages 10
Place of Publication Canberra
Publisher CSIRO
Field of Research 0607 - Plant Biology
HERDC Category C1 - Journal Article (DEST)
Abstract Runoff from mountain ash (Eucalyptus regnans F.Muell.) forested catchments has been shown to decline significantly in the few decades following fire – returning to pre-fire levels in the following centuries – owing to changes in ecosystem water use with stand age in a relationship known as Kuczera’s model. We examined this relationship between catchment runoff and stand age by measuring whole-ecosystem exchanges of water using an eddy covariance system measuring forest evapotranspiration (ET) combined with sap-flow measurements of tree water use, with measurements made across a chronosequence of three sites (24, 80 and 296 years since fire). At the 296-year old site eddy covariance systems were installed above the E. regnans overstorey and above the distinct rainforest understorey. Contrary to predictions from the Kuczera curve, we found that measurements of whole-forest ET decreased by far less across stand age between 24 and 296 years. Although the overstorey tree water use declined by 1.8 mm day-1 with increasing forest age (an annual decrease of 657 mm) the understorey ET contributed between 1.2 and 1.5 mm day-1, 45% of the total ET (3 mm day-1) at the old growth forest.
DOI http://dx.doi.org/10.1071/FP08120   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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Created: Fri, 08 May 2009, 12:05:40 CST by Sarena Wegener