Defoliation as a Means of Assessing Browsing Tolerance in Southern Rata (Metrosideros umbellata Cav.)
Date
1983-10
Authors
Contributor
Advisor
Department
Instructor
Depositor
Speaker
Researcher
Consultant
Interviewer
Narrator
Transcriber
Annotator
Journal Title
Journal ISSN
Volume Title
Publisher
University of Hawai'i Press
Volume
Number/Issue
Starting Page
Ending Page
Alternative Title
Abstract
Old and young trees of southern rata (Metrosideros umbel/ata)
were artificially defoliated to examine their response to foliage loss. Partial
(50%) or total defoliation before budbreak depressed shoot growth more
markedly in old than in young trees. Fifty percent leaf loss shortly after budbreak
or at the end of the growing season did not significantly impair shoot
growth in either age class. By contrast, total postbudbreak defoliation resulted
in the death of most shoots in both old and young trees. While the terminal
buds of both old and young trees totally defoliated in late autumn showed good
overwinter survival, only in the young trees were there sufficient energy reserves
to enable some of these shoots to flush the following season. Young trees
proved to be more resilient to foliage loss, suggesting a more positive carbon
balance (energy surplus) in young trees than in older trees.
Description
Keywords
Citation
Payton IJ. 1983. Defoliation as a means of assessing browsing tolerance in southern rata (Metrosideros umbellata Cav.). Pac Sci 37(4): 443-452.
Extent
Format
Geographic Location
Time Period
Related To
Related To (URI)
Table of Contents
Rights
Rights Holder
Local Contexts
Collections
Email libraryada-l@lists.hawaii.edu if you need this content in ADA-compliant format.