Kuo‐Jung Chao
A5105759555- Ecology and Vegetation Dynamics Studies
- Forest ecology and management
- Forest Ecology and Biodiversity Studies
- Plant Water Relations and Carbon Dynamics
- Mesoporous Materials and Catalysis
- Zeolite Catalysis and Synthesis
- Fire effects on ecosystems
- Remote Sensing and LiDAR Applications
- Polyoxometalates: Synthesis and Applications
- Tree Root and Stability Studies
- Chemical Synthesis and Characterization
- Conservation, Biodiversity, and Resource Management
- Plant and animal studies
- Remote Sensing in Agriculture
- Catalysis and Oxidation Reactions
- Catalytic Processes in Materials Science
- Species Distribution and Climate Change
- Aeolian processes and effects
- Spectroscopy and Quantum Chemical Studies
- Fluorine in Organic Chemistry
- Semiconductor materials and devices
- Copper Interconnects and Reliability
- Surface Chemistry and Catalysis
- Mycorrhizal Fungi and Plant Interactions
- Metal-Organic Frameworks: Synthesis and Applications
Yuxi Normal University
2025
National Chung Hsing University
2010-2024
University of the Philippines Los Baños
2020
University of the Philippines Diliman
2020
Forest Research Institute
2020
Uva Wellassa University
2020
University of Leeds
2008-2015
National Taipei University
2009-2014
National Kaohsiung University of Applied Sciences
2011
University of Oxford
2009
Amazon forests are a key but poorly understood component of the global carbon cycle. If, as anticipated, they dry this century, might accelerate climate change through losses and changed surface energy balances. We used records from multiple long-term monitoring plots across Amazonia to assess forest responses intense 2005 drought, possible analog future events. Affected lost biomass, reversing large sink, with greatest impacts observed where season was unusually intense. Relative pre-2005...
Abstract. Forest structure and dynamics vary across the Amazon Basin in an east-west gradient coincident with variations soil fertility geology. This has resulted hypothesis that may play important role explaining Basin-wide forest biomass, growth stem turnover rates. Soil samples were collected a total of 59 different plots analysed for exchangeable cations, carbon, nitrogen pH, several phosphorus fractions likely plant availability also quantified. Physical properties additionally examined...
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Abstract Aim To examine the contribution of large‐diameter trees to biomass, stand structure, and species richness across forest biomes. Location Global. Time period Early 21st century. Major taxa studied Woody plants. Methods We examined large density, biomass using a global network 48 (from 2 60 ha) plots representing 5,601,473 stems 9,298 210 plant families. This was assessed three metrics: largest 1% ≥ 1 cm diameter at breast height (DBH), all DBH, those rank‐ordered that cumulatively...
Long-term monitoring of distributed, multiple plots is the key to quantify macroecological patterns and changes. Here we examine evidence for concerted changes in structure, dynamics composition old-growth Amazonian forests late twentieth century. In 1980s 1990s, mature gained biomass underwent accelerated growth dynamics, all consistent with a widespread, long-acting stimulation growth. Because on average exceeded mortality, intact have been carbon sink. century, trees more than 10 cm...
Summary Tree mortality is an important process in forest ecology. We explored the extent to which tropical tree death a predictable outcome of taxon and individual level properties by means mixed‐species logistic regression, for trees ≥ 10 cm diameter. worked two lowland regions with markedly different floristic composition dynamic regimes – high wood density, low‐mortality northeastern (NE) Amazon (in eastern Venezuela), low high‐mortality northwestern (NW) northern Peru). Among those...
Abstract. Forest structure and dynamics have been noted to vary across the Amazon Basin in an east-west gradient a pattern which coincides with variations soil fertility geology. This has resulted hypothesis that may play important role explaining Basin-wide forest biomass, growth stem turnover rates. To test this assess importance of edaphic properties affect dynamics, plant samples were collected total 59 different plots Basin. Samples analysed for exchangeable cations, C, N, pH various P...
The carbon sink capacity of tropical forests is substantially affected by tree mortality. However, the main drivers death remain largely unknown. Here we present a pan-Amazonian assessment how and why trees die, analysing over 120,000 representing > 3800 species from 189 long-term RAINFOR forest plots. While mortality rates vary greatly Amazon-wide, on average are as likely to die standing they broken or uprooted-modes with different ecological consequences. Species-level growth rate single...
Summary Tropical forest above‐ground wood production ( AGWP ) varies substantially along environmental gradients. Some evidence suggests that may vary between regions and specifically A sian forests have particularly high . However, comparisons across biogeographic using standardized methods are lacking, limiting our assessment of pan‐tropical variation in potential causes. We sampled NW mazon (17 long‐term plots) N B orneo (11 plots), both with abundant year‐round precipitation. Within each...
Vanadium-containing silicate MCM-41 (V-MCM-41) zeolite and aluminophosphate AFI (VAPO-5) were synthesized characterized by spectroscopic techniques. In as-synthesized form, the vanadyl ions (VIVO)2+ found to be major vanadium species in form of atomic dispersion on EPR exist simultaneously with tetrahedral (Td) V5+ UV−vis. 29Si MAS NMR investigations suggested that might attach through interaction silanol groups internal wall hexagonal tubes. The (in Td) are incorporated into lattice during...
Arbuscular mycorrhizal (AM) and ectomycorrhizal (EcM) associations are critical for host-tree performance. However, how correlate with the latitudinal tree beta-diversity remains untested. Using a global dataset of 45 forest plots representing 2,804,270 trees across 3840 species, we test AM EcM contribute to total its components (turnover nestedness) all trees. We find rather than predominantly decreasing turnover increasing nestedness latitude, probably because wide distributions do not...
Abstract Positive aboveground biomass trends have been reported from old‐growth forests across the Amazon basin and hypothesized to reflect a large‐scale response exterior forcing. The result could, however, be an artefact due sampling bias induced by nature of forest growth dynamics. Here, we characterize statistically disturbance process in as recorded 135 plots RAINFOR network up 2006, other independent research programmes, explore consequences artefacts using data‐based stochastic...
Abstract Question: How do trees die in high‐mortality and low‐mortality Amazonian forest regions? Why different ways? Location: Humid, lowland forests Peru Venezuela. Methods: Patterns of multiple treefall mode death (standing, broken or uprooted) were recorded for ≥10 cm diameter permanent plots. Logistic regression was used to relate tree diameter, relative growth rate wood density. Results: Frequency events higher northwestern (NW) than northeastern (NE) Amazonia, but these small,...
Coarse woody debris (CWD) is a rarely studied component of the carbon cycle. We report first measurements both CWD wood density and necromass in humid, lowland northwestern Amazonia, using line-intersect plot-based methods. Average densities were not significantly different between clay-rich white sand unflooded forests, but lower floodplain forest (p ≤ 0.001). Necromass lying on ground was also (10.3 ± 6.1 Mg·ha –1 , mean 1 SE) than (30.9 5.4) (45.8 7.3) forests 0.001, method). These...
Abstract. The Amazon basin, one of the most substantial biomass carbon pools on earth, is characterised by strong macroecological gradients in biomass, mortality rates, and wood density from west to east. These could affect necromass stocks, but this has not yet been tested. This study aims assess stocks determinants across Amazonian forests. Field-based literature data were used find relationships between possible determinants. Furthermore, a simple model was applied estimate extrapolate...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntramolecular vibrational energy relaxation. Decomposition of a series chemically activated fluoroalkyl cyclopropanesJ. F. Meagher, K. J. Chao, R. Barker, and B. S. RabinovitchCite this: Phys. Chem. 1974, 78, 25, 2535–2543Publication Date (Print):December 1, 1974Publication History Published online1 May 2002Published inissue 1 December 1974https://doi.org/10.1021/j100618a003RIGHTS & PERMISSIONSArticle Views57Altmetric-Citations43LEARN ABOUT THESE...
Abstract Online learning has been rapidly developing in the last decade. However, there is very little literature available about actual adoption of online synchronous assessment approaches and any guidelines for effective design implementation. This paper aims at designing evaluating possibility applying assessments a formal credit course. Relying on four dimensions knowledge taxonomy, this describes different conducting mid‐term exam, including quiz, practicum, essay oral assessments. The...
Societal Impact Statement Understanding of tropical forests has been revolutionized by monitoring in permanent plots. Data from global plot networks have transformed our knowledge forests’ diversity, function, contribution to biogeochemical cycles, and sensitivity climate change. Monitoring thus far concentrated rain forests. Despite increasing appreciation their threatened status, biodiversity, importance the carbon cycle, dry is still its infancy. We provide a protocol for plots Expanding...
This study was carried out to assess the inhibitory activity of algae in plateau lakes against plant pathogenic fungi, and further conduct preliminary research analysis on their antifungal active ingredients, order provide a certain basis for development utilization algal secondary metabolite as anti-plant fungal agents. Different solvent extraction methods using water, ethyl acetate, ethanol, methanol were conducted extract polyphenol metabolites from Ulothrix , Chlorella vulgaris...
High image discrimination threshold values tend to be given canopy hemispherical photographs (CHPs) with high exposure (resulting in bright images), but the effects of on have been overlooked. A model system was developed precisely manipulate (in relation reference measured from an unobscured overcast sky), openness, gap fragmentation and sky illumination CHPs. We showed that there a numerical trade-off relationship between CHPs, whereas last three factors had negligible threshold. new...