Abstract
Branch architecture, leaf photosynthetic traits, and leaf demography were investigated in saplings of two woody species, Homolanthus caloneurus and Macaranga rostulata, co-occurring in the understory of a tropical mountain forest. M. rostulata saplings have cylindrical crowns, whereas H. caloneurus saplings have flat crowns. Saplings of the two species were found not to differ in area-based photosynthetic traits and in average light conditions in the understory of the studied site, but they do differ in internode length, leaf emergence rate, leaf lifespan, and total leaf area. Displayed leaf area of H. caloneurus saplings, which have the more rapid leaf emergence, was smaller than that of M. rostulata saplings, which have a longer leaf lifespan and larger total leaf area, although M. rostulata saplings showed a higher degree of leaf overlap. Short leaf lifespan and consequent small total leaf area would be linked to leaf overlap avoidance in the densely packed flat H. caloneurus crown. In contrast, M. rostulata saplings maintained a large total leaf area by producing leaves with a long leaf lifespan. In these understory saplings with a different crown architecture, we observed two contrasting adaptation strategies to shade which are achieved by adjusting a suite of morphological and leaf demographic characters. Each understory species has a suite of morphological traits and leaf demography specific to its architecture, thus attaining leaf overlap avoidance or large total leaf area.
| Original language | English |
|---|---|
| Pages (from-to) | 459-467 |
| Number of pages | 9 |
| Journal | Journal of Plant Research |
| Volume | 119 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Sep 1 2006 |
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All Science Journal Classification (ASJC) codes
- Plant Science
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Comparison of the physiology, morphology, and leaf demography of tropical saplings with different crown shapes. / Miyazawa, Yoshiyuki; Ishihara, Masae; Suzuki, Maki; Fukumasu, Hiroko; Kikuzawa, Kihachiro.
In: Journal of Plant Research, Vol. 119, No. 5, 01.09.2006, p. 459-467.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Comparison of the physiology, morphology, and leaf demography of tropical saplings with different crown shapes
AU - Miyazawa, Yoshiyuki
AU - Ishihara, Masae
AU - Suzuki, Maki
AU - Fukumasu, Hiroko
AU - Kikuzawa, Kihachiro
PY - 2006/9/1
Y1 - 2006/9/1
N2 - Branch architecture, leaf photosynthetic traits, and leaf demography were investigated in saplings of two woody species, Homolanthus caloneurus and Macaranga rostulata, co-occurring in the understory of a tropical mountain forest. M. rostulata saplings have cylindrical crowns, whereas H. caloneurus saplings have flat crowns. Saplings of the two species were found not to differ in area-based photosynthetic traits and in average light conditions in the understory of the studied site, but they do differ in internode length, leaf emergence rate, leaf lifespan, and total leaf area. Displayed leaf area of H. caloneurus saplings, which have the more rapid leaf emergence, was smaller than that of M. rostulata saplings, which have a longer leaf lifespan and larger total leaf area, although M. rostulata saplings showed a higher degree of leaf overlap. Short leaf lifespan and consequent small total leaf area would be linked to leaf overlap avoidance in the densely packed flat H. caloneurus crown. In contrast, M. rostulata saplings maintained a large total leaf area by producing leaves with a long leaf lifespan. In these understory saplings with a different crown architecture, we observed two contrasting adaptation strategies to shade which are achieved by adjusting a suite of morphological and leaf demographic characters. Each understory species has a suite of morphological traits and leaf demography specific to its architecture, thus attaining leaf overlap avoidance or large total leaf area.
AB - Branch architecture, leaf photosynthetic traits, and leaf demography were investigated in saplings of two woody species, Homolanthus caloneurus and Macaranga rostulata, co-occurring in the understory of a tropical mountain forest. M. rostulata saplings have cylindrical crowns, whereas H. caloneurus saplings have flat crowns. Saplings of the two species were found not to differ in area-based photosynthetic traits and in average light conditions in the understory of the studied site, but they do differ in internode length, leaf emergence rate, leaf lifespan, and total leaf area. Displayed leaf area of H. caloneurus saplings, which have the more rapid leaf emergence, was smaller than that of M. rostulata saplings, which have a longer leaf lifespan and larger total leaf area, although M. rostulata saplings showed a higher degree of leaf overlap. Short leaf lifespan and consequent small total leaf area would be linked to leaf overlap avoidance in the densely packed flat H. caloneurus crown. In contrast, M. rostulata saplings maintained a large total leaf area by producing leaves with a long leaf lifespan. In these understory saplings with a different crown architecture, we observed two contrasting adaptation strategies to shade which are achieved by adjusting a suite of morphological and leaf demographic characters. Each understory species has a suite of morphological traits and leaf demography specific to its architecture, thus attaining leaf overlap avoidance or large total leaf area.
UR - http://www.scopus.com/inward/record.url?scp=33748667055&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33748667055&partnerID=8YFLogxK
U2 - 10.1007/s10265-006-0008-5
DO - 10.1007/s10265-006-0008-5
M3 - Article
C2 - 16941062
AN - SCOPUS:33748667055
VL - 119
SP - 459
EP - 467
JO - Journal of Plant Research
JF - Journal of Plant Research
SN - 0918-9440
IS - 5
ER -