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한국식물학회 / v.50, no.4, 2007년, pp.423-429 
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( Population Ecology in a Natural Syneilesis palmata Stand: II. Vegetative Growth and Population Structure ) |
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| 초 록 |
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| Vegetative growth and changes within populations of Syneilesis palmata (THUNB>) MAX. Usannamul were monitored in two natural stands with different levels of incoming light. This perennial, shade-tolerant herb was measured for its plant size, petiole length, leaf breadth, and leaflet number over 11 years in a moderately shaded (SS) stand and over 7 years in a severely shaded (SS) stand. At the end of each growing season, a shoot primordium developed at the center of the root system. Correlation coefficients were mostly high between pairings of two properties -- total weight, petiole length, petiole weight, leaf breadth, leaf blade weight, leaf area, specific leaf area, and leaflet number. Mean annual mortality of this species was higher in SS (22.97%) than in MS (8.85%), but great fluctuations were seen from year by year. Mortality was lowest for medium-sized plants. Regarding petiole length, differences in mean annual growth rates were conspicuous, i.e., 2.6% in MS and 8.4% in SS, while growth rates for leaf breadth were 3.1% in MS and 24.2% in SS. Changes in plant frequency within individual size classes roughly showed a normal distribution curve. However, the mode varied year by year, and such changes were more remarkable in SS than in MS. Under severe shading, S. palmata had a higher growth rate and but also greater mortality than did plants under moderate shade. Therefore, one can conclude that the population structure in SS was unstable over time. |
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| 키워드 |
| frequency distribution;growth rate;mortality;plant size;shaded stand;Syneilesis palmata; |
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Journal of Plant Biology / v.50, no.4, 2007년, pp.423-429
한국식물학회
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200734515987245)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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