Development and testing of seed-crop assessment models for three lowland forest eucalypts in East Gippsland, Victoria

A technique developed for assessing seed crops in Eucalyptus regnans regrowth in Central Gippsland, Victoria, south-eastern Australia, has been adapted for use with three Lowland Sclerophyll Forest eucalypts from East Gippsland: E. sieberi, E. globoidea and E. baxteri. The technique was tested in th...

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Bibliographic Details
Published in:Australian forestry 2006, Vol.69 (4), p.257-269
Main Authors: Bassett, O.D, White, M.D, Dacy, M
Format: Article
Language:English
Subjects:
accuracy
assessment
density
estimation
Eucalyptus baxteri
Eucalyptus globoidea
Eucalyptus sieberi
forest trees
lowland forests
measurement
pods
prediction
regression analysis
sampling
seed crop production
seed crops
seed productivity
seeds
statistical models
stems
surveys
tree and stand measurements
tree crown
tree damage
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Summary:A technique developed for assessing seed crops in Eucalyptus regnans regrowth in Central Gippsland, Victoria, south-eastern Australia, has been adapted for use with three Lowland Sclerophyll Forest eucalypts from East Gippsland: E. sieberi, E. globoidea and E. baxteri. The technique was tested in the field by comparing the number of capsules assessed on two test trees of each species with the actual number of capsules counted on them, and by comparing the quantity of seed assessed on seedtrees retained in two harvested coupes with the subsequent seedfall from those trees. The results indicate that the technique can be used to assess seed crops on a stand basis with sufficient accuracy for field research purposes, although the assessment of individual trees is likely to be less precise.
ISSN:0004-9158
2325-6087
DOI:10.1080/00049158.2006.10676246