A5028919425- Plant responses to elevated CO2
- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Peatlands and Wetlands Ecology
- Climate change and permafrost
- Hydrology and Watershed Management Studies
- Light effects on plants
- Atmospheric chemistry and aerosols
- Solar Radiation and Photovoltaics
- Remote Sensing in Agriculture
- Cryospheric studies and observations
- Ecology and Conservation Studies
- Ecology and Vegetation Dynamics Studies
- Soil and Water Nutrient Dynamics
- Polar Research and Ecology
- Horticultural and Viticultural Research
- Tree Root and Stability Studies
- Magnetic and Electromagnetic Effects
- Lichen and fungal ecology
- Botany and Plant Ecology Studies
- Superconducting Materials and Applications
- Plant and animal studies
- Photosynthetic Processes and Mechanisms
- Soil Carbon and Nitrogen Dynamics
- Turfgrass Adaptation and Management
Kyushu University
2016-2025
Addis Ababa University
2011
Toyama Prefectural University
2011
University of Toyama
2004-2008
Hiroshima University
1998-2001
Waseda University
1993-2001
Fujikura (Japan)
1996-2000
International Superconductivity Technology Center
1993
Abstract Chlorophylls (Chl) are important pigments in plants that used to absorb photons and release electrons. There several types of Chls but terrestrial only possess two these: a b . The form light-harvesting Chl / -binding protein complexes (LHC), which most the light. peak wavelengths absorption spectra differ by c. 20 nm, ratio between them (the ratio) is an determinant light efficiency photosynthesis (i.e., antenna size). Here, we investigated why LHCs rather than other...
Abstract The effects of rainfall conditions and the morphological characteristics leaves on moisture dynamics litter layers were investigated. Maximum water storage capacity interception under various evaluated for two contrasting types: a needle‐leaf type, represented by Cryptomeria japonica leaves; broad‐leaf Lithocarpus edulis leaves. An artificial simulator was applied to measure each type's intensities. Our results indicated that (1) maximum layer proportional mass (kg/m 2 ) regardless...
A constant ratio of photosynthetically active radiation (PAR) to solar (SR) (about 0.45–0.46) has been used in many ecological studies convert SR into PAR by multiplication. The is useful and convenient. However, there no general agreement on whether the 0.45 or 0.46 how distributed globally. Accordingly, local empirical ratios have reported. This study aims demonstrate a global distribution its changing range. Thus, we created two simple models estimate based in-situ climatic data achieve...
We examined soil microbial activities, i.e., biomass, respiration rate, and temperature dependence of the on a glacier foreland in Ny-Ålesund, Svalbard, Norway. collected samples from 4 study sites that were set up along primary succession (Site 1, youngest, to Site 4, oldest). Microbial biomass measured with SIR method increased successional age (55 724μg Cbiomass g−1 d.w. 1 4). The rate was laboratory an open-flow infrared gas-analyzer system, changing 2° 20°C at 3–4° intervals....
The behavior of dissolved and particulate components stream nitrogen (N) phosphorus (P) were measured for 2 years in a small mountainous watershed covered primarily with plantation forest Japanese cypress (Chamaecyparis obtusa). load N P bore consistent relationship to discharge while the varied by up two orders magnitude at given level. Most was exported form (DN) most (PP), which bears similarity loads from agricultural watersheds. Owing different behaviors DN PP, changes total (TN)...
The physiological and anatomical responses of bryophytes to altered gravity conditions will provide crucial information for estimating how plant traits have evolved adapt significant increases in the effects land history. We quantified changes growth photosynthesis model mosses, Physcomitrella patens, grown under a hypergravity environment 25 days or 8 weeks using custom-built centrifuge equipped with lighting system. This is first study examine response conditions. Canopy-based was...
Phytotoxic air pollutants such as atmospheric nitrogen dioxide (NO2) are among the major stresses affecting tree photosynthesis in urban areas. We clarified relationship between NO2 concentrations and photosynthetic function for three trees, Prunus × yedoensis, Rhododendron pulchrum, Ginkgo biloba, planted Kyoto surrounding cities, combining our published data new collected from 2020 to 2023. High increased long-term water use efficiency all species. decreased P. yedoensis R. while G....
Abstract Hydrologic balance in high‐altitude, mid‐latitude mountain areas is important terms of the water resources available to associated lowlands. This study examined how current and historical shifts precipitation ( P ) patterns concurrent increases temperature T affected runoff Q other hydrologic components a catchment central Japan, using combination long‐term data simplified model, along with their stochastic treatment. The availability intensive meteorological hydrological from...
Background: Air pollution level in Addis Ababa is presumed to be high due the prevalence of old vehicles and substandard road infrastructures. This study assessed CO concentration as a measure traffic air pollution.Materials methods: total 80 side 24 on-road daily samples during wet dry seasons 2007 2008, respectively, were taken using data logger. A structured checklist was used document related data. Downloaded from sampler generate summary statistics presentations. Data quality...
As a part of the study on soil carbon flow in deglaciated area Ny-Alesund, Svalbard (79°N), we estimated contribution belowground respiration vascular plants to total August 1996. Four sites were set up along primary successional series, ranging from newly moraine older with well-developed vegetation cover. Respiratory activity parts (roots + stems) three dominant species, Salix polaris, Saxifraga oppositifolia and Luzula confusa, was determined under laboratory conditions. The respiratory...
The stem water conducting system of an evergreen broad-leaved oak, Lithocarpus edulis (Mak.) Nakai, was investigated. Evergreen oaks (Lithocarpus, Castanopsis, Cyclobalanopsis, Quercus) belonging to the Quercoideae are a major component Asian monsoon forests, and characterized by possession radial-porous wood. A characteristic wood is development aggregate rays between radially oriented files vessels. We measured distribution vessel lumen diameters in cross section calculated theoretical...