Height-related changes in leaf photosynthetic traits in diverse Bornean tropical rain forest trees

Tanaka, Kenzö; Inoue, Yuta; Yoshimura, Masashi; Yamashita, Megumi; Tanaka-Oda, Ayumi; Ichie, Tomoaki

doi:10.1007/s00442-014-3126-0

Cited by 94 publications

(105 citation statements)

References 71 publications

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“…Weak correlations between Pn and leaf N were observed by other authors (e.g. Kenzo et al, 2015). In the present experiment, it is likely that the optimal nutrient availability in the root allowed plants taking up the needed quantity of nutrients to support the higher growth rate induced in treated plants, without affecting leaf N content (Table 4).…”

Section: Discussioncontrasting

confidence: 66%

Application of municipal biowaste derived products in Hibiscus cultivation: Effect on leaf gaseous exchange activity, and plant biomass accumulation and quality

Massa¹,

Prisa²,

Montoneri³

et al. 2016

Scientia Horticulturae

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Highlights•Fermented organic materials and their hydrolysates were tested on substrate-grown Hibiscus.•Positive effects were observed on total biomass, plant height, SPAD index and net photosynthesis compared with untreated plants.•Tested products performed at the same level of a commercial product.•Obtained results represent a step forward for the application of biowaste hydrolysates in intensive substrate cultures. AbstractTwo urban biowaste materials, fermented under anaerobic and aerobic conditions, their soluble and insoluble alkaline hydrolysates, and a commercial biostimulant product, were compared for their capacity to boost Hibiscus crop production and quality. Plants were grown in 4-litre pots, containing peat and pumice as substrate, under optimal growing conditions. A randomized-block experimental design was adopted. Two types (main factors of variability) of treatments were applied, i.e. by blending the above products with the substrate at transplant, and by fertigation using the soluble hydrolysates only. Plant biomass characteristics and ecophysiological parameters were measured. Mean effect of factors and their interactions were assessed by two-way ANOVA. Principal component analysis was performed by using the different dependent variables to summarize the most relevant differences among treatments. Compared with the control (untreated plants), the applied treatments enhanced most of the investigated parameters. The most valuable effects were observed for total biomass accumulation (+25%), plant height (+10%), leaf chlorophyll SPAD index (+15%) and net photosynthesis (+24%). The hydrolysates performed better than the pristine materials. The former ones were comparable to the commercial biostimulant. The results confirmed the hypothesis that biowaste derived products induce biostimulant activity on Hibiscus; their application can improve cultivation sustainability. ); SD, soluble digestate hydrolysate obtained from the alkaline hydrolysis of D; SGC, soluble compost hydrolysate obtained from the alkaline hydrolysis of GC; SUB, treatments applied to the substrate as a powder blended with the substrate; T 1 , beginning of the experimentation (30 days after transplant) (day)

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Section: Discussioncontrasting

confidence: 66%

Application of municipal biowaste derived products in Hibiscus cultivation: Effect on leaf gaseous exchange activity, and plant biomass accumulation and quality

Massa¹,

Prisa²,

Montoneri³

et al. 2016

Scientia Horticulturae

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“…The upper canopy environment with high photosynthetic productivity may allow symbiosis with EcM fungi, which may have a higher carbohydrate demand than AM fungi (de Kroon and Visser 2003;Smith and Read 2008). In fact, dominant dipterocarp trees in the emergent layer showed higher photosynthetic ability under upper canopy conditions than most non-dipterocarp trees or lower trees when they were in the emergent layer (Kenzo et al 2015b;Inoue et al 2015). Canopy, sub-canopy, and understory species showed significantly negative leaf d 15 N values, with large variation.…”

Section: Effect Of N Isotope Discrimination By Root Mycorrhizal Fungimentioning

confidence: 93%

“…The monthly mean temperature varied only slightly, from 25.6°C in February to 27.0°C in May (Kenzo et al 2007). The mean canopy height in the stand was about 30-40 m; some emergent trees reached 50 m in height (Kenzo et al 2015b). …”

Section: Study Sitesmentioning

confidence: 98%

Variation in leaf and soil δ15N in diverse tree species in a lowland dipterocarp rainforest, Malaysia

Tanaka-Oda

Tanaka

Inoue

et al. 2015

Trees

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Key message Large variations in leaf d 15 N in Bornean tropical rainforest trees may indicate that various tropical species have species-specific strategy for nitrogen uptake under low soil nutrient conditions, including root symbiotic microorganisms such as ectomycorrhiza.Abstract Lowland tropical rainforests in Southeast Asia are characterized by high species diversity despite limited soil nutrient conditions. The plant nitrogen isotope ratio (d 15 N) reflects plant uptake of soil nitrogen. We analyzed d 15 N values and nitrogen content (N %) in leaves and roots of 108 woody species with different types of symbiotic microorganisms, of different life forms (emergent, canopy, sub-canopy, understory, and canopy gap species), and from different families in a Bornean lowland dipterocarp forest to gain more insight into the diversity of nitrogen uptake strategy in the rhizosphere. Leaf d 15 N values in the species studied varied largely from -7.2 to 5.0 %, which is comparable to the values of known Asian trees including temperate, sub-tropical, and tropical mountain forests. Leaf d 15 N also varied significantly among both life forms and families, though the phylogenetically independent contrast (PIC) relationships were not statistically significant among life form, family, and symbiotic types. Some families showed specific leaf d 15 N values; Dipterocarpaceae, the dominant family in the canopy layer with symbiotic ectomycorrhiza in Southeast Asia, had small intraspecific variation and higher leaf d 15 N values (0.03 %) compared with species exhibiting arbuscular mycorrhiza, whereas several families such as Burseraceae, Euphorbiaceae, and Myrtaceae showed large interspecific variation in leaf d 15 N (e.g., from -7.2 to 5.0 % in Euphorbiaceae). These variations suggest that tropical species may have family-or species-specific strategy, such as root symbiotic microorganisms, for nitrogen uptake under low-nutrient conditions in tropical rainforests in Southeast Asia.

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“…Moreover, large interannual variations of rainfall in Cambodia may cause strong drought stress for DEF trees because exceptional leaf shedding occurs in evergreen canopy trees during the dry season in years of extremely low rainfall (Iida et al 2013). Trees in DEF with high wood density may afford high tolerance to drought stress with low stem water potential by having high physical strength with thick cell walls during the dry season (Holbrook et al 1995, Onoda et al 2010, especially in tall canopy trees with large gravity potential (Kenzo et al 2015, Ryan et al 2006. Several researchers also found that tree species in canopy gaps were classified independently (canopy gap species) in DEF, although we did not categorize gap species for trees in DDF due to an unclosed forest canopy in the forest type (Fig.…”

Section: Categories Of Tree Life-formsmentioning

confidence: 99%

Comparison of Wood Density and Water Content Between Dry Evergreen and Dry Deciduous Forest Trees in Central Cambodia

Tanaka

Sano

Yoneda

et al. 2017

JARQ

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We compared wood density (WD) and water content (WC) between a dry evergreen forest (DEF) and dry deciduous forest (DDF) in central Cambodia. Wood core samples of 53 species from DEF and 54 species from DDF were collected. Average WD and WC in all species were similar between DEF (0.64 g/cm 3 of WD; 0.40 g/cm 3 of WC) and DDF (0.64 g/cm 3 of WD; 0.42 g/cm 3 of WC), although the average WC of five tree species that appeared in both forest types was higher in DDF than that in DEF. Tree size effects on WD and WC were negligible in both DEF and DDF. Intraspecific differences of those effects on WD and WC were also not observed in major canopy species in DDF and DEF, except for WD of Shorea obtusa in DDF, whose value increased with increasing tree diameter. Tree life-forms such as canopy, subcanopy, and understory species did not affect WD and WC in both forest types, although canopy gap species in DEF showed the smallest WD among the life-forms. The relationships between WD and WC in DEF and DDF were negatively correlated, and both regression equations did not differ between forest types. Overall, there were little differences on average WD and WC between DEF and DDF trees, even though their species composition and tree ecological traits were significantly different between forest types in central Cambodia.Discipline: Forestry and forest products Additional key words: Biomass, plant functional group, REDD+, wood specific gravity, Dipterocarpaceae IntroductionTropical dry forests occur in the Indochina Peninsula, which experiences severe dry spells, sometimes lasting several months without rainfall. In this region, there are two distinct types of dry forests in lowland areas (Ashton 2014, Hozumi et al. 1969, Ogawa et al. 1965, namely dry evergreen forests (DEF) and dry deciduous forests (DDF). Cambodia is located in the center of the peninsula and still maintains relatively high forest coverage (59.1% in 2006) compared with adjacent countries in the same This paper reports the results obtained in the project on "Estimation and simulation of carbon stock change of tropical forest in Asia

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Height-related changes in leaf photosynthetic traits in diverse Bornean tropical rain forest trees

Cited by 94 publications

References 71 publications

Application of municipal biowaste derived products in Hibiscus cultivation: Effect on leaf gaseous exchange activity, and plant biomass accumulation and quality

Application of municipal biowaste derived products in Hibiscus cultivation: Effect on leaf gaseous exchange activity, and plant biomass accumulation and quality

Variation in leaf and soil δ15N in diverse tree species in a lowland dipterocarp rainforest, Malaysia

Comparison of Wood Density and Water Content Between Dry Evergreen and Dry Deciduous Forest Trees in Central Cambodia

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