A cost-benefit analysis of leaves of eight Australian savanna tree species of differing leaf life-span

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dc.contributor.author Eamus, D
dc.contributor.author Myers, B
dc.contributor.author Duff, G
dc.contributor.author Williams, R
dc.date.accessioned 2011-02-07T06:21:19Z
dc.date.issued 1999
dc.identifier.citation Photosynthetica, 1999, 36 (4), pp. 575 - 586
dc.identifier.issn 0300-3604
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/13398
dc.description.abstract Cost-benefit analyses of foliar construction and maintenance costs and of carbon assimilation of leaves of differing life-span were conducted using two evergreen, three semi-deciduous, and three deciduous tree species of savannas of north Australia. Rates of radiant-energy-saturated CO2 assimilation (P(max)) and dark respiration were measured and leaves were analysed for total nitrogen, fat, and ash concentrations, and for heat of combustion. Specific leaf area, and leaf N and ash contents were significantly lower in longer-lived leaves (evergreen) than shorter-lived leaves (deciduous) species. Leaves of evergreen species also had significantly higher heat of combustion and lower crude fat content than leaves of deciduous species. On a leaf area basis, P(max) was highest in leaves of evergreen species, but on a leaf dry mass basis it was highest in leaves of deciduous species. P(max) and total Kjeldahl N content were linearly correlated across all eight species, and foliar N content was higher in leaves of deciduous than evergreen species. Leaf construction cost was significantly higher and maintenance costs were lower for leaves of evergreen than deciduous species. Maintenance and construction costs were linearly related to each other across all species. Leaves of evergreen species had a higher cost-benefit ratio compared to leaves of deciduous species but with longer lived leaves, the payback interval was longer in evergreen than deciduous species. These results support the hypotheses that longer lived leaves are more expensive to construct than short-lived leaves, and that a higher investment of N into short-lived leaves occurs which supports a higher P(max) over a shorter payback interval.
dc.language eng
dc.relation.isbasedon 10.1023/A:1007048222329
dc.title A cost-benefit analysis of leaves of eight Australian savanna tree species of differing leaf life-span
dc.type Journal Article
dc.parent Photosynthetica
dc.journal.volume 4
dc.journal.volume 36
dc.journal.number 4 en_US
dc.publocation Prague 6 en_US
dc.identifier.startpage 575 en_US
dc.identifier.endpage 586 en_US
dc.cauo.name SCI.Environmental Sciences en_US
dc.conference Verified OK en_US
dc.for 0607 Plant Biology
dc.personcode 000006
dc.percentage 100 en_US
dc.classification.name Plant Biology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Ash
dc.description.keywords Deciduous and evergreen trees
dc.description.keywords Fat
dc.description.keywords Heat of combustion
dc.description.keywords Maintenance and construction costs
dc.description.keywords Nitrogen content
dc.description.keywords Photosynthetic rate
dc.description.keywords Specific leaf area
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false
utslib.collection.history Closed (ID: 3)


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