DOI: 10.5061/dryad.bb460
title: Data from: Demographic properties shape tree size distribution in a Malaysian rain forest

description: Different mechanisms have been proposed to explain how vertical and
 horizontal heterogeneity in light conditions enhances tree species
 coexistence in forest ecosystems. The foliage partitioning theory proposes
 that differentiation in vertical foliage distribution, caused by an
 interspecific variation in mortality-to-growth ratio, promotes stable
 coexistence. In contrast, successional niche theory posits that horizontal
 light heterogeneity, caused by gap dynamics, enhances species coexistence
 through an interspecific trade-off between growth rate and survival. To
 distinguish between these theories of species coexistence, we analyzed
 tree inventory data for 370 species from the 50-ha plot in Pasoh Forest
 Reserve, Malaysia. We used community-wide Bayesian models to quantify
 size-dependent growth rate and mortality of every species. We compared the
 observed size distributions and the projected distributions from
 size-dependent demographic rates. We found that the observed size
 distributions were not simply correlated with the rate of population
 increase but were related to demographic properties such as size growth
 rate and mortality. Species with low relative abundance of juveniles in
 size distribution showed high growth rate and low mortality at small tree
 sizes and low per-capita recruitment rate. Overall, our findings were in
 accordance with those predicted by foliage partitioning theory.
description: Data for 370 species in
 actual communityTree diameter data of
 370 selected tree species in the Pasoh 50-ha plot in 1990 and 2000 census.
 Species names are kept unchanged (the "actual community"). The
 provided dataset is a processed subset of the original dataset for our
 demographic analysis of tree size distribution and demography of tree
 species populations demonstrated in the main paper. Readers interested in
 using the data for purposes other than testing our analysis are advised to
 obtain the raw data of tree inventories of the Pasoh 50-ha plot from the
 Forest Research Institute Malaysia (FRIM), the National Institute for
 Environmental Studies (NIES), Japan, and the Center for Tropical Forest
 Science (CTFS), Smithsonian Tropical Research
 Institute.dfr100.txtData for 370 species in permuted communityTree diameter data of 370 selected tree species in the Pasoh 50-ha plot in 1990 and 2000 census. In this data, species identity of each tree was shuffled to generate a fake, "permuted community". The provided dataset is a processed subset of the original dataset for our demographic analysis of tree size distribution and demography of tree species populations demonstrated in the main paper. Readers interested in using the data for purposes other than testing our analysis are advised to obtain the raw data of tree inventories of the Pasoh 50-ha plot from the Forest Research Institute Malaysia (FRIM), the National Institute for Environmental Studies (NIES), Japan, and the Center for Tropical Forest Science (CTFS), Smithsonian Tropical Research Institute.dfr100ps.txtSpecies names of 370 speciesList of species codes and scientific species names for 370 selected tree species in the Pasoh 50-ha plot in 1990 and 2000 census. The provided dataset is a processed subset of the original dataset for our demographic analysis of tree size distribution and demography of tree species populations demonstrated in the main paper. Readers interested in using the data for purposes other than testing our analysis are advised to obtain the raw data of tree inventories of the Pasoh 50-ha plot from the Forest Research Institute Malaysia (FRIM), the National Institute for Environmental Studies (NIES), Japan, and the Center for Tropical Forest Science (CTFS), Smithsonian Tropical Research Institute.species_code.txtR code for growth and mortality modelsR code for parameter estimation of of size-growth function and mortality function, applied to the Bayesian analysis of tree dynamics in the Pasoh 50-ha plot.r_code.txt