Photosynthetic water use efficiency in tree crowns of Shorea beccariana and Dryobalanops aromatica in a tropical rain forest in Sarawak, East Malaysia

Kitahashi, Yoshinori; Ichie, Tomoaki; Maruyama, Yutaka; Tanaka, Kenzö; Kitaoka, Shôzaburô; Matsuki, Sawako; Chong, Lucy; Nakashizuka, Tohru; Koike, Takao

doi:10.1007/s11099-008-0025-9

Cited by 13 publications

(10 citation statements)

References 20 publications

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“…2, 3), consistent with other studies of tropical rain forests (Aylett 1985;Pons and Welschen 2003;Kenzo et al 2003;Kitahashi et al 2008). This suggests that canopy leaves suffer severe water deficits in the daytime, even in non-seasonal lowland tropical rain forests in South-east Asia.…”

Section: Discussionsupporting

confidence: 91%

Interspecific variation in leaf water use associated with drought tolerance in four emergent dipterocarp species of a tropical rain forest in Borneo

Hiromi

Ichie

Tanaka

et al. 2012

Journal of Forest Research

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By use of tree-tower and canopy-crane systems we studied variations in the water use, including transpiration, stomatal conductance, and leaf water potential, of the uppermost sun-exposed canopy leaves of four emergent dipterocarp species in an aseasonal tropical rain forest in Sarawak, Malaysia. Midday depression in stomatal conductance and leaf water potential was observed in all the species studied. Interspecific differences were clearly observed in the maxima of transpiration rates and stomatal conductance and the minima of leaf water potential among the four dipterocarp species. These interspecific variations were closely related to wood density and to factors affecting ecological patterns of distribution. Specifically, Shorea parvifolia and S. smithiana, both of which have a relatively low wood density for Dipterocarpaceae and are found on clay-rich soil, had a high transpiration rate in the daytime but had a large midday depression and a low leaf water potential. In contrast, Dryobalanops aromatica, which has a high wood density and is found in sandy soil areas, consumed less water even during the daytime.Dipterocarpus pachyphyllus, which has a high wood density and is found on clay-rich soil, stood intermediate between Shorea and D. aromatica in leaf water use. The two Shorea species had higher mortality than the others during the severe drought associated with El Niño in 1998, so daily pattern of leaf water use in each dipterocarp species might be correlated with its susceptibility to unusual drought events.

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Section: Discussionsupporting

confidence: 91%

Interspecific variation in leaf water use associated with drought tolerance in four emergent dipterocarp species of a tropical rain forest in Borneo

Hiromi

Ichie

Tanaka

et al. 2012

Journal of Forest Research

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“…In general, our data agree with those published for a number of tree species growing in various climatic regions: as a rule shade foliage has lower A n and WUE than sun leaves (Gonza´lez-Rodrı´guez et al 2002a, 2002bTurney et al 2002;Gyimah and Nakao 2007). However, diverse patterns in photosynthetic WUE have been revealed within a canopy of tropical forest species depending on the time of day and leaf water status Kitahashi et al 2008). Some tree species show no differences in leaf WUE between shaded and sunlit canopy layers (Mitchell 1998).…”

Section: Variation In Photosynthetic Wue With Respect To Light Availasupporting

confidence: 90%

Is distribution of hydraulic constraints within tree crowns reflected in photosynthetic water‐use efficiency? An example of Betula pendula

Sellin

Eensalu

Niglas

2009

Ecological Research

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Spatial and daily variation in photosynthetic water-use efficiency was examined in leaves of Betula pendula Roth with respect to distribution of hydraulic conductance within the crown, morphological properties of stomata, and water availability. Intrinsic water-use efficiency (A n /g s ) was determined from gas-exchange measurements performed both in situ in a natural forest stand and on detached shoots under laboratory conditions. In intact foliage, sun leaves demonstrated significantly higher (P < 0.001) A n /g s than shade leaves, as photosynthesis in the lower canopy was chronically limited by low light availability. However, this difference reversed in the mid-day period under sufficient irradiance (I > 800 lmol m À2 s À1 ): A n /g s averaged 28.8 and 24.0 lmol mol À1 (P < 0.01) for shade and sun leaves, respectively. This last finding coincided with the data obtained in laboratory conditions: under equivalent leaf water supply and light, A n /g s in shade foliage was greater (P < 0.001) than in sun foliage across a wide range of irradiance. Thus, shade foliage of B. pendula is characterized by inherently higher A n /g s than sun foliage, associated with more conservative stomatal behavior, and lower soil-to-leaf (K T ) and leaf hydraulic conductances. Under unlimited light conditions, a within-crown trade-off between A n /g s and K T becomes apparent. Differences in stomatal conductance between the detached shoots from sunlit and shaded canopy layers were largely attributable to the variation in stomatal morphology; significant relationships were established with characteristics combining stomatal size and density (relative stomatal surface, stomatal pore area index). Stomatal morphology is very likely involved in long-term adjustment of photosynthetic WUE.

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“…This phenomenon is widely known for plants in arid regions (Tenhunen et al 1984) and savannas (Franco and Lüttge 2002;de Mattos et al 2002). For moist tropical forest, where climatic conditions are milder, such a mechanism has also been described for canopy species (Aylett 1985;Roy and Salager 1992;Zotz and Winter 1996;Kitahashi et al 2008).…”

Section: Discussionmentioning

confidence: 91%

“…However, high irradiances associated with a high vapour pressure deficit (VPD) may lead to strong midday stomatal closure and depression of photosynthesis in leaves produced in the upper canopy (Roy and Salager 1992;Koch et al 1994;Zotz and Winter 1996;Nabeshima and Hiura 2008). Leaf physiological traits can be adversely affected by water stress conditions that are also related to hydraulic constraints due to tree height and desiccation in the tree tops (Matsuzaki et al 2005;Kitahashi et al 2008). If stomatal closure occurs, it can result in a decrease in the intercellular CO 2 concentration and cause midday depression of photosynthesis.…”

Section: Introductionmentioning

confidence: 99%

Differential leaf traits of a neotropical tree Cariniana legalis (Mart.) Kuntze (Lecythidaceae): comparing saplings and emergent trees

Sanches

Ribeiro

Dalvi

et al. 2009

Trees

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Cariniana legalis is an emergent tree that reaches the upper canopy in Brazilian Semideciduous Forest. Spatial contrasts in microclimatic conditions between the upper canopy and understorey in a forest may affect morphophysiological leaf traits. In order to test the hypothesis that the upper canopy is more stressful to leaves than a gap environment we compared emergent trees of C. legalis, 28-29 m in height to gap saplings, 6-9 m in height, for the following parameters: leaf area, leaf mass area (LMA the dry weight:leaf area ratio), leaf thickness, leaf anatomical parameters, stomata conductance, and chlorophyll a fluorescence. Leaves from emergent trees had smaller leaf areas but greater LMA compared to saplings. Leaf thickness, palisade layer thickness, and stomatal density were higher for emergent trees than for saplings. The opposite pattern was observed for spongy layer thickness and spongy/palisade ratio. Stomatal conductance was also higher for emergent tree leaves than for sapling leaves, but the magnitude of depression on stomatal conductance near midday was more pronounced in emergent trees. The potential quantum yield of photosystem II, as determined by the F v /F m ratio was lower for leaves from saplings. The lower values of stomatal conductance, indicating restriction in CO 2 diffusion into the mesophyll can be related to higher photoinhibition observed in the saplings. Leaves from emergent trees and saplings exhibited similar values for apparent electron transport rates and non-photochemical quenching. Our results suggest that changes in leaf traits could be associated to dry conditions at the upper canopy as well as to the ontogenetic transition between sapling/emergent tree life stages.

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Photosynthetic water use efficiency in tree crowns of Shorea beccariana and Dryobalanops aromatica in a tropical rain forest in Sarawak, East Malaysia

Cited by 13 publications

References 20 publications

Interspecific variation in leaf water use associated with drought tolerance in four emergent dipterocarp species of a tropical rain forest in Borneo

Interspecific variation in leaf water use associated with drought tolerance in four emergent dipterocarp species of a tropical rain forest in Borneo

Is distribution of hydraulic constraints within tree crowns reflected in photosynthetic water‐use efficiency? An example of Betula pendula

Differential leaf traits of a neotropical tree Cariniana legalis (Mart.) Kuntze (Lecythidaceae): comparing saplings and emergent trees

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