Tree-ring anomalies in Toona ciliata
- Heinrich, Ingo School of Resources, Environment & Society, Australian National University, Canberra, Australia - Department of Geosciences, Geography, University of Fribourg, Switzerland
- Banks, John Charles Gripper School of Resources, Environment & Society, Australian National University, Canberra, Australia
-
2006
Published in:
- IAWA Journal. - 2006, vol. 27, no. 2, p. 213-231
English
New increment core samples of Toona ciliata collected in the Australian tropics and subtropics compared to already existing material from the Upper Kangaroo Valley, near Sydney exhibit distinct differences in tree-ring structures. This necessitated a closer examination of the wood anatomy, possible false rings and the species’ crossdating capacity in northeast Australia. During tree-ring analysis two growth anomalies (extensive zones of narrow and indistinct rings) and three types of false rings were discovered which complicated crossdating. However, in growth experiments only one type of false ring could be induced artificially by totally defoliating young trees. It was possible to alter their phenological performance by artificially changing the environmental conditions. Visual crossdating of samples originating from northeast Australia was feasible within and between trees. For selected years a positive relationship between ring width and precipitation data was found.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Géosciences
- Language
-
- English
- Classification
- Botany
- License
- License undefined
- Identifiers
-
- RERO DOC 5949
- DOI 10.1163/22941932-90000150
- Persistent URL
- https://folia.unifr.ch/unifr/documents/300032
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