• Home
  • Guangxi University
  • Guangxi Key Laboratory of Subtropical Bioresource Conservation and Utilization
  • James Lafrankie
James Lafrankie

James Lafrankie
Guangxi University · Guangxi Key Laboratory of Subtropical Bioresource Conservation and Utilization

Ph.D.

About

68
Publications
26,269
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
6,463
Citations

Publications

Publications (68)
Article
Full-text available
We tested the credibility and significance of digital field photographs as supplements or substitutes for conventional herbarium specimens with particular relevance to exploration of the tropics. We made 113 collections in triplicate at a species-rich mountain in the Philippines while we took 1238 digital photographs of the same plants. We then ide...
Article
Stylidium javanicum, a very poorly known species formerly only recorded from Java, Sumba, and New Guinea, is here reported as a new record for the Philippines, where it was found in grasslands in Antique Province of Panay Island. It is morphologically similar to S. alsinoides, the only other Stylidium species known for the country, but can be disti...
Article
Full-text available
A compilation of an unpublished checklist of Philippine vascular plants prepared by the late Leonardo L. Co and the plant photographs he took are the core contents of the Co's Digital Flora of the Philippines (CDFP) website (www.philippineplants.org). The aim of CDFP is to present a continuously updated account of all native and naturalized species...
Article
Full-text available
Neutral and niche theories give contrasting explanations for the maintenance of tropical tree species diversity. Both have some empirical support, but methods to disentangle their effects have not yet been developed. We applied a statistical measure of spatial structure to data from 14 large tropical forest plots to test a prediction of niche theor...
Article
Full-text available
In Amazonian tropical forests, recent studies have reported increases in aboveground biomass and in primary productivity, as well as shifts in plant species composition favouring fast-growing species over slow-growing ones. This pervasive alteration of mature tropical forestswas attributed to global environmental change, such as an increase in atmo...
Data
Total Aboveground Biomass and Number of Individuals, Per Stand and Per Demographic Group Aboveground biomass is reported in Mg ha−1, number of individuals in ind. ha−1. Also reported is the total percentage of aboveground biomass (AGB) and of the number of individuals in the three demographic groups. (50 KB DOC)
Data
Description and Environmental Characteristics of the Study Plots (52 KB DOC)
Data
Stocks and Changes in Total Aboveground Biomass for Ten Undisturbed Tropical Forest Plots Based on Trees ≥10 cm dbh This table reports total stand aboveground biomass, aboveground biomass growth rate, recruitment rate, loss rate, and net change. Bold figures indicate changes significantly different from the null hypothesis of zero change. Confidenc...
Data
Taxonomic Identification Level and Functional Traits in the Permanent Plots The table represents the number of taxa at three identification levels: species, genus, and family. Also shown is the number of taxa for which information on wood density and on seed weight is available at the species level, at the genus level or at the family level. (48 KB...
Data
Quantiles of Wood Density and of Log-Transformed Seed Mass in the 12 Study Plots Wood density is defined as oven-dry weight divided by green volume, in g cm−3, seed mass is in grams. Median wood density varied between 0.53 and 0.63 g cm−3. Median seed mass varied between 0.023 and 0.33 g. (54 KB DOC)
Data
Full-text available
Correlation between Log-Transformed Sapling Relative Growth Rate and Log-Transformed Sapling Mortality Rate across the 12 Study Plots Both relative growth rate and mortality rate are in % y−1. Each circle represents a species-site combination, and the solid line is the first PCA axis, which captures 20% of the variation in the two variables. (178 K...
Data
Study Plots (A) Detailed information on the 12 study plots, with an emphasis on the known disturbance history of these sites. (B) Aboveground biomass estimation and statistical analyses based on large trees only. (75 KB DOC)
Article
Aim A major floristic and climatic transition from aseasonal to seasonal evergreen tropical forest (the Kangar–Pattani Line; KPL) exists in the Indo-Sundaic region of Southeast Asia. Mechanisms constraining species distribution here are at present poorly understood, but it is hypothesized that species differ in their tolerances of abiotic factors,...
Article
In large samples of trees > or = 1 cm dbh (more than 1 million trees and 3000 species), in six lowland tropical forests on three continents, we assigned species with >30 individuals to one of six classes of stature at maturity (SAM). We then compared the proportional representation of understory trees (1-2 cm dbh) among these classes. The understor...
Article
Full-text available
Most ecological hypotheses about species coexistence hinge on species differences, but quantifying trait differences across species in diverse communities is often unfeasible. We examined the variation of demographic traits using a global tropical forest data set covering 4500 species in 10 large-scale tree inventories. With a hierarchical Bayesian...
Article
Full-text available
Tropical forests vary substantially in the densities of trees of different sizes and thus in above-ground biomass and carbon stores. However, these tree size distributions show fundamental similarities suggestive of underlying general principles. The theory of metabolic ecology predicts that tree abundances will scale as the -2 power of diameter. D...
Article
The theory of metabolic ecology predicts specific relationships among tree stem diameter, biomass, height, growth and mortality. As demographic rates are important to estimates of carbon fluxes in forests, this theory might offer important insights into the global carbon budget, and deserves careful assessment. We assembled data from 10 old-growth...
Chapter
Full-text available
A 52 hectare permanent research plot was established in Lambir Hills National Park to enable long-term study of factors controlling the origin and maintenance of tree diversity. In this chapter we summarize some of our recent work on the relationships between floristic variation and edaphic heterogeneity in the Lambir forest. First, we provide a ge...
Article
Full-text available
An ecological community's species diversity tends to erode through time as a result of stochastic extinction, competitive exclusion, and unstable host-enemy dynamics. This erosion of diversity can be prevented over the short term if recruits are highly diverse as a result of preferential recruitment of rare species or, alternatively, if rare specie...
Article
Full-text available
The establishment and growth of a young tree requires a microsite that falls within a range of specific environmental conditions. Microsites will to some degree be modified by such neighbouring plants as are already established, a circumstance that will in turn lead to either a positive or negative spatial association among the individuals. Such pa...
Article
Relationships between spatial distributions and site conditions, namely topography and soil texture, were analyzed for two congeneric emergent trees, Dryobalanops aromatica and Dryobalanops lanceolata (Dipterocarpaceae), in a tropical rainforest in Sarawak, East Malaysia. A 52-ha permanent plot was divided into 1300 quadrats measuring 20 m × 20 m;...
Article
Full-text available
The diversity and niche specificity of hemi-epiphytic figs in a lowland dipterocarp forest in Sarawak were investigated in 1998. Twenty-seven fig species (264 individuals, c. 120 ha) colonized a diversity of host taxa (35 families), but densities were very low and only 1.77% of trees> 30 cm d.b.h. were occupied. There were no significant associatio...
Article
Population structure and spatial patterns were examined for four species of canopy dipterocarps (Anisoptera costata, Dipterocarpus alatus, Hopea odorata, Vatica cinerea) in a 50ha plot in seasonal dry evergreen forest at the Huai Kha Khaeng Wildlife Sanctuary in western Thailand. Spatial dispersion was assessed with Morisita’s index for quadrat siz...
Article
Stand structure and floristic composition of the 50-ha Forest Research Plot in Pasoh Forest Reserve (Pasoh FR) are described. Pasoh FR was found to have extremely high tree species diversity. In the 50-ha plot there were 338,924 trees with a total basal area of 1,659 m2, comprising 818 tree species in 295 genera and 81 families. The Euphorbiaceae (...
Article
The rooting ability of branch cuttings was evaluated for 100 tree species (including 41 families and 78 genera) collected in a tropical rainforest in Sarawak, Malaysia. Leafy cuttings of natural forest saplings were planted in a non-mist propagation system with IBA treatment. During the 6-month experiment, 66 species were rooted with an overall mea...
Article
Full-text available
Theories accounting for the maintenance of high tree diversity in tropical rain forests range from those proposing that tropical trees are highly co-evolved niche specialists, to those proposing that they are mostly generalist, undergoing random drift. We test these hypotheses at a meaningful, community-wide scale using data on the spatial patterns...
Article
A 52-ha permanent forest plot was established in Lambir Hills National Park Sarawak, Malaysia to begin the long-term study of factors controlling the origin and maintenance of tree diversity. Stand structure and floristic composition of the plot are described. Lambir was found to have the highest diversity of trees anywhere on earth. In the 52-ha p...
Article
Full-text available
Abundance and richness are the two fundamental components of speciesdiversity. They represent two distinct types of variables of which the formerisadditive when aggregated across scales while the latter is nonadditive. Thisstudy investigated the changes in the spatial patterns of abundance andrichnessof tree species across multiple scales in a trop...
Article
Full-text available
We assembled data on the diversity of tree species, genera, families, and orders in 13 large-scale forest inventory plots across the tropics. Each plot included at least 16 ha where every individual ≥ 1 cm in stem diameter was censused, providing a much more thorough measure of a-diversity than the typical 0.1-or 1-ha inventories. Amazonian and Sou...
Article
Full-text available
A fundamental question in ecology is how many species occur within a given area. Despite the complexity and diversity of different ecosystems, there exists a surprisingly simple, approximate answer: the number of species is proportional to the size of the area raised to some exponent. The exponent often turns out to be roughly 14. This power law ca...
Article
The relationship between species diversity and sampled area is fundamental to ecology. Traditionally, theories of the species–area relationship have been dominated by random-placement models. Such models were used to formulate the canonical theory of species–area curves and species abundances. In this paper, however, armed with a detailed data set...
Article
Full-text available
A fundamental question in ecology is how many species occur within a given area. Despite the complexity and diversity of different ecosystems, there exists a surprisingly simple, approximate answer: the number of species is proportional to the size of the area raised to some exponent. The exponent often turns out to be roughly 1/4. This power law c...
Article
Full-text available
Fully mapped tree census plots of large area, 25 to 52 hectares, have now been completed at six different sites in tropical forests, including dry deciduous to wet evergreen forest on two continents. One of the main goals of these plots has been to evaluate spatial patterns in tropical tree populations. Here the degree of aggregation in the distrib...
Chapter
In this early report of a global program of tropical rain forest research, the causes of tree species diversity are examined through comparisons at global, regional and local scales. Species diversity in communities of sessile organisms has been attributed to many factors. Hypotheses which address two of these, Connell’s on intermediate levels of d...
Article
Full-text available
Dynamics of the Pasoh forest in Peninsular Malaysia were assessed by drawing a comparison with a forest in Panama, Central America, whose dynamics have been thoroughly described. Census plots of 50 ha were established at both sites using standard methods. Tree mortality at Pasoh over an eight-year interval was 1.46% yr(-1) for all stems > or = 10 m...
Article
A research collaboration between forest scientists of tropical Asia and the United States is gathering new statistically comparable data, aimed at furthering an understanding of tropical forests and at translating biological and socio-economic research into results relevant to forest management, economics and policy. The programme is interdisciplin...
Article
1 Horizontal and vertical heterogeneity of resource availability, coupled with the specialized use of resources by tree species, results in complex patterns of tree species distributions in tropical rain forests. We studied the horizontal and vertical distributions of 4014 individuals in 11 species of early successional Macaranga (Euphorbiaceae) in...
Article
Spatial patterns of tree species were studied in a 50-ha tropical rain forest plot in the Pasoh forest, Malaysia. This forest is characterized by a high diversity and very high number of rare species. Out of the 745 species occurring with > five individuals, 80.4 % had an aggregated distribution, 19.5% were randomly distributed and one species had...
Article
1 Species-accumulation curves for woody plants were calculated in three tropical forests, based on fully mapped 50-ha plots in wet, old-growth forest in Peninsular Malaysia, in moist, old-growth forest in central Panama, and in dry, previously logged forest in southern India. A total of 610000 stems were identified to species and mapped to < 1 m ac...
Article
The diversity of trees (species richness, abundance and Shannon diversity) in a tropical rain forest of Malaysia has been studied from the point of view of its spatial organization in order to formulate hypotheses about the origin of the observed spatial patterns. The question that motivated this study is whether tropical forests communities are in...
Article
Full-text available
Capparis buwaldae, a climber of primary forests endemic to Borneo, is a myrmecophyte with stem domatia. The stems become hollow by pith degeneration and develop oval openings allowing ants to enter. These openings are localized at a strictly defined area above the insertion of the leaves and a pair of nodal thorny stipules. They gradually split ope...
Article
The population biology of Aquilaria malaccensis, one source of gharu, and Cinnamomum mollissimum, one source of wild cinnamon, was studied in a 50 ha permanent plot of primary rain forest in Malaysia. Median diameter growth rates of 0.22 cm yr-1 and 0.1 cm yr-1 should not be prohibitive of economic exploitation, and suggest that the trees could be...
Article
Scale is emerging as one of the critical problems in ecology because our perception of most ecological variables and processes depends upon the scale at which the variables are measured. A conclusion obtained at one scale may not be valid at another scale without sufficient knowledge of the scaling effect, which is also a source of misinterpretatio...
Article
Full-text available
Recorded the flowering activity and sex of reproductive individuals in two separate flowering seasons for c2600 trees representing three species of Aporusa and two species of Baccaurea (all Euphorbiaceae) in a primary rain forest. There were neither sexually mixed trees nor sex switching of trees between years. Flowering sex ratios for the species...
Article
Full-text available
Species richness of lianas is found to be as high as that usually found in the species-rich moist forests of South America. As in Africa and South America, lianas appear to constitute about a quarter of the woody flora in the everwet lowland forests of Peninsular Malaysia. Consequently, the total woody plant diversity in Peninsular Malaysia is at t...
Article
Full-text available
An inventory was made of 50 ha of primary lowland rain forest in Peninsular Malaysia, in which ca. 340,000 trees 1 cm dbh or larger were measured and identified to species. Out of a total plot tree flora of 820 species, 76 species are known to bear edible fruit. Especially diverse were the wild species of mango (Mangifera, Anacardiaceae, 12 spp.),...
Article
Full-text available
MANOKARAN, N. & LaFRANKIE, J.V. 1990. Stand structure of Pasoh Forest Reserve, a lowland rain forest in Peninsular Malaysia. We tabulate and analyse the stand structure of Pasoh Forest Reserve, Malaysia, based on an enumeration of all trees > 1 cm dbh in a 50-ha plot. Mean densities were 6769 trees ha 1 , > 1 ondbh, 530 trees ha 1 , > 10 cm dbh, 3....
Article
A time-course study of shoot development in Smilacina racemosa was combined with an analysis of the vascular anatomy to investigate how adjacent sympodial units in the perennial rhizome are structurally related to one another. Organogenesis is seasonal and occurs over a period of 20 mo; leaves and flowers are preformed in miniature 8-12 mo before t...
Article
In Smilacina racemosa and S stellata the seedlings and mature plants differ in the form and development of their aerial parts The epicotyl shoot of seedlings develops monopodially in a morphologically precise fashion over the course of three years The first year, there is no foliage leaf; the second year, petiolate foliage leaves develop in the abs...
Article
Full-text available
We describe the structure of a stand of seasonal dry evergreen forest located in the Huai Kha Khaeng Wildlife Sanctuary (HKK), Uthai Thani Province based on a census of al1 trees >= 1 cm dbh in a 50-ha plot. Mean densities were 1,613 trees ha -l (>=1 cm dbh), 439 trees ha -l (>= 10 cm), and 3.74 trees ha -l (>=100 cm). Mean basal area was 30.45 m 2...
Article
Thesis (Ph. D.)--Harvard University, 1985. Includes bibliographical references (leaves 252-256).

Network

Cited By