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Trade-off between height growth and stem diameter growth for an evergreen Oak, Quercus glauca, in a mixed hardwood forest
Article first published online: 30 OCT 2003
DOI: 10.1046/j.1365-2435.1997.00085.x
1997 British Ecological Society
1365-2435/asset/cover.gif?v=1&s=571713c051a4c9b4843f1aa4a484de7ca8661854 "Functional Ecology")
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How to Cite
SUMIDA, A., ITO, H. and ISAGI, Y. (1997), Trade-off between height growth and stem diameter growth for an evergreen Oak, Quercus glauca, in a mixed hardwood forest. Functional Ecology, 11: 300–309. doi: 10.1046/j.1365-2435.1997.00085.x
Publication History
- Issue published online: 30 OCT 2003
- Article first published online: 30 OCT 2003
Keywords:
- Allocation;
- height growth;
- light condition;
- relative growth rate;
- stem growth
1. Patterns of stem growth of a mid-successional evergreen Oak species (Quercus glauca) in a mixed hardwood forest were examined to explore the trade-off relationship between stem-diameter growth and height growth.
2. The mean cross-sectional area (and the corresponding mean diameter) of a stem at a point in time was defined as the stem volume divided by tree height. Based on this definition, a simple equation representing the trade-off relationship between the height growth and mean diameter growth was formulated.
3. In the long term, allocation to height growth was encouraged at the seedling stage and it gradually declined with time, with the decline in the suppressed seedlings being more pronounced than in the dominant trees.
4. However, both the suppressed and the dominant trees showed acceleration of height growth at various ages. Such a fluctuation in the allocation of biomass to height growth is likely to have been caused by chronological changes in light conditions, and meandered the trajectory of allometry between the height and mean diameter.
5. The observed stem growth patterns of the individual trees could explain the chronological changes in the diameter–height relationship of the population.