A5020171320- Ecology and Vegetation Dynamics Studies
- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Plant and animal studies
- Animal Ecology and Behavior Studies
- Leaf Properties and Growth Measurement
- Mollusks and Parasites Studies
- Species Distribution and Climate Change
- Plant responses to elevated CO2
- Remote Sensing in Agriculture
- Plant Diversity and Evolution
- Plant Parasitism and Resistance
- Tree Root and Stability Studies
- Forest Ecology and Biodiversity Studies
- Soil Carbon and Nitrogen Dynamics
- Horticultural and Viticultural Research
- Wildlife Ecology and Conservation
- Asian Geopolitics and Ethnography
- South Asian Studies and Conflicts
- Plant Reproductive Biology
- Isotope Analysis in Ecology
- Environmental Conservation and Management
- Environmental DNA in Biodiversity Studies
- Plant and Fungal Species Descriptions
- Rangeland and Wildlife Management
Meijo University
2017-2024
Tohoku University
2005-2021
Tokyo Metropolitan University
2021
Suzuki (Japan)
2021
The Japanese Society of Gastroenterological Surgery
2021
Hudson Institute
2021
National Institute of Technology, Tomakomai College
2014-2019
Hokkaido University
2013-2019
Kyoto University
2001-2014
Kyoto University of Education
2013
• Global-scale quantification of relationships between plant traits gives insight into the evolution world's vegetation, and is crucial for parameterizing vegetation–climate models. A database was compiled, comprising data hundreds to thousands species core 'leaf economics' leaf lifespan, mass per area, photosynthetic capacity, dark respiration, nitrogen phosphorus concentrations, as well potassium, N-use efficiency (PNUE), N : P ratio. While mean trait values differed functional types,...
ABSTRACT Aim Our aim was to quantify climatic influences on key leaf traits and relationships at the global scale. This knowledge provides insight into how plants have adapted different environmental pressures, will lead better calibration of future vegetation–climate models. Location The data set represents vegetation from 175 sites around world. Methods For more than 2500 vascular plant species, we compiled mass per area (LMA), life span (LL), nitrogen concentration (N ) photosynthetic...
Meta-analysis plays a crucial role in syntheses of quantitative evidence ecology and biodiversity conservation. The reliability estimates meta-analyses strongly depends on unbiased sampling primary studies. Although earlier studies have explored potential biases ecological meta-analyses, reported statistical results associated study characteristics published different languages never been tested environmental sciences. We address this knowledge gap by systematically searching comparing...
Understanding how plants are constructed—i.e., key size dimensions and the amount of mass invested in different tissues varies among individuals—is essential for modeling plant growth, carbon stocks, energy fluxes terrestrial biosphere. Allocation patterns can differ through ontogeny, but also coexisting species adapted to environments. While a variety models dealing with biomass allocation exist, we lack synthetic understanding underlying processes. This is partly due suitable data sets...
The mechanism of general flowering in Dipterocarpaceae the Malay Peninsula is revealed through field survey and meteorological data analyses. regions coincide with those which experienced a low night-time temperature (LNT) c . 2 mo before flowering. This supports hypothesis that air induces development floral buds dipterocarps. LNT was found to be caused by radiative cooling during dry spells winter when northern subtropical ridge (STR) occasionally migrates southwards mass into equatorial...
Summary Leaf demography was examined for trees of various heights over a 3.7‐year period in Malaysian rain forest. We compared between upper and lower parts the crown its relation to height. The results were analysed at stand level by pooling several shade‐tolerant species, as well three species which multiple individuals sampled. Photon flux density generally higher than crowns. production rate leaf loss faster, number cohorts median life span therefore lower, crowns most trees. Faster...
Canopy ecosystems provide a wide range of ecosystem services, but because they are difficult to access, knowledge about their conservation is limited. Yakushima World Heritage Site in Japan characterized by old-growth forests with huge Japanese cedars (Cryptomeria japonica). soil, originating from litter, present the cedars' crowns, and offers habitat for abundant epiphytes. We hypothesized that canopy soil invertebrate communities would be distinct those on ground. climbed five retained...
Spring leaf phenology strongly influences plant productivity in temperate deciduous forests. Many studies have detected earlier budburst and maturation smaller trees within species, discussed the adaptive significance of increasing carbon gain before canopy closure small trees. However, some previous found opposite pattern, physiological environmental bases for this discrepancy are incompletely understood. We investigated spring 11 species a cool-temperate forest Japan 2 years with different...
Differences in leaf size are expected to be coordinated with various shoot traits and branching intensity because these relationships will influence light capture efficiency, water use, biomechanics. Previous studies have mainly focused on interspecific patterns of trait relationships, but not intraspecific at the geographic scale. We investigated variation Fagus crenata Japan.Allometric between current-year shoots per branch unit 1-m length main axis (BI) its coordination latitude were...
The relative effects of light and tree height on the architecture leader crowns (i.e., leading section main trunk, 100 cm in length) current‐year shoots for a canopy species, Fagus crenata , occupying both ridge top valley bottom cool‐temperate forest Japan were investigated. For crowns, number leaves increased with increasing height, whereas mean length photon flux density (PFD). crown area decreased, depth leaf index increased, PFD. mass However, this total was allocated differently...
Based on an allometric reconstruction, the structure and biomass-allocation patterns of branches current-year shoots were investigated in various heights pioneer tree Rhus trichocarpa, to evaluate how crown development is achieved limited association with height. Path analysis was conducted explore effects light availability, basal height size individual branch growth. Branch angle affected by height, whereas mass influenced primarily availability. This result suggests that strongly...
Seed dispersal is the predominant mobile stage for sessile plants, and critically affects distribution patterns of species (Nathan & Muller-Landau 2000). Thus, seed are important in understanding population dynamics species.
Allometry of shoot extension units (hereafter termed "current shoots") was analyzed in a Malaysian canopy species, Elateriospermum tapos Bl. (Euphorbiaceae). Changes current allometry with increasing tree height were related to growth and maintenance crowns. Total biomass, biomass allocation ratio non-photosynthetic photosynthetic organs, wood density shoots unrelated height. However, structure changed Compared short trees, tall trees produced the same mass but thicker shorter stems. Current...
Leaf phenology was studied in individuals of a canopy species, Elateriospermum tapos (Euphorbiaceae), at various ontogenetic stages, Malaysian rain forest. The timing leaf emergence not synchronized among sapling individuals, and correlated with any meteorological factors the preceding month. fall saplings positively net radiation, maximum minimum temperature, but negatively relative humidity month, although these correlations were weak. production rate larger under higher light, related to...