Data from: Successional growth dynamics of woody saplings in tropical dry forest understory
Data files
May 15, 2025 version files 2.79 MB
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Díaz_et_al._DATA.xls
2.79 MB
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README.md
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Abstract
Here, we examine relative growth rates (RGR) of woody species saplings along a broad successional gradient in a tropical dry forest based on height and basal area data gathered over 15 years of vegetation monitoring in permanent plots differing in successional age (1-73 years) plus a mature forest plot. We used mixed-effects models to examine the link between individual size, fallow age, and plant traits, and from this link model their relationship with sapling RGR. Overall, growth tended to be slow along the successional gradient, with the exception of the initial 10 years, during which most groups exhibited their highest growth rates. The key factors influencing basal area growth were the species' successional guild and their affiliation with the Leguminosae family. In contrast, growth in height was primarily shaped by successional guild and growth form. The widespread decline in sapling growth rates within the understory indicates that, in later stages of succession, light availability—rather than water—becomes the main limiting factor.
Díaz-Talamantes, R., González, E.J., Muñoz, R., Enríquez, M., Dávila-Hernández, G., Sandoval-Granillo, V., Lebrija-Trejos, E., Meave, J.A. (2025) Biotropica
The data come from 17 permanent forest plots with different abandonment ages (1-73 years, plus a mature forest plot) in Nizanda (16° 39’ 30” N, 95° 00’ 40” W), Oaxaca state, southern Mexico. We used annual records of survival (alive/dead), height (cm), and basal diameter (cm) of tree, shrub, and liana saplings for the 2003–2018 period.
Page “Height-based RGR” contains the estimated height-based relative growth rates for the community of woody saplings along with their taxonomic, functional and successional identities and functional traits.
Columns are:
- individual ID
- year, referring to the year of measurement
- plot
- age, referring to the successional age of the plot
- species
- rgr (cm⋅cm-1⋅year-1)
- suc, meaning successional guild (mat, mature; pion, pioneer)
- gf, meaning growth form (shr, shrub; tre, tree)
- leg, meaning taxonomic identity (leg, legume; noleg, non-legume)
- phen, meaning leaf phenology (inv, inverted phenology; nor, normal phenology)
- wd, referring to wood density (g⋅cm^-3) and
- ss, referring to seed size (mm)
Page “Basal area-based RGR” contains the estimated basal area-based relative growth rates for the community of woody saplings along with their taxonomic, functional and successional identities and functional traits.
Columns are:
- individual ID
- year, referring to the year of measurement
- plot
- age, referring to the successional age of the plot
- species
- rgr (cm⋅cm-2⋅year-1)
- suc, meaning successional guild (mat, mature; pion, pioneer)
- gf, meaning growth form (shr, shrub; tre, tree; vin, vine)
- leg, meaning taxonomic identity (leg, legume; noleg, non-legume)
- phen, meaning leaf phenology (inv, inverted phenology; nor, normal phenology)
- wd, referring to wood density (g⋅cm^-3) and
- ss, referring to seed size (mm)