• PhytoIn
  • Installation
  • Overview
  • Quick start
  • Citation
  • Contributing
  • License
  • Development notes

Tools for vegetation analysis and forest inventory in R.

PhytoIn provides functions and example datasets for phytosociological analysis, forest inventory, biomass and carbon estimation, and visualization of vegetation data.

install.packages("PhytoIn")

# install.packages("remotes")
remotes::install_github("PhytoIn/PhytoIn")

Main features:

• Structural parameters and diversity
  phytoparam(), summary.param(), plot.param()

• Biomass and carbon
  AGB() — wrapper around BIOMASS for above-ground biomass (AGB), C, and CO₂e

• Volume stratification
  stratvol() — wood volume by DBH classes

• Species accumulation and rarefaction
  collector.curve(), rarefaction()

• Basal area visualization
  BAplot() — basal areas on quadrat maps (supports rectangular plots and individual coords)

Example datasets included: quadrat.df, point.df, quadrat2_plot.df, quadrat2_tree.df, quadrat3_rect.df.

Example chunks are not executed when building this README. Run them interactively.

library(PhytoIn)

res <- phytoparam(
  x = quadrat.df, measure.label = "CBH", taxon = "Species",
  family = "Family", su = "Plot", su.size = 25
)

summary(res)      # S3 summary
plot(res)         # S3 plot
head(res$param)   # Taxon-level table
res$global        # Global metrics

rarefaction(formula = Species ~ Plot - Morta, data = quadrat.df, plot = TRUE)

collector.curve(formula = Species ~ Plot - Morta, data = quadrat.df,
                times = 1000, plot = TRUE, theme = "theme_classic")

out <- AGB(
  x = quadrat.df, measure.label = "CBH", h = "h", taxon = "Species",
  dead = "Morta", circumference = TRUE, su = "Plot", area = 0.0625,
  rm.dead = TRUE, check.spelling = FALSE, correct.taxon = TRUE, long = TRUE
)

head(out$tree)
out$taxon
out$total
out$WD.level

Note: AGB() uses BIOMASS internally. Internet access is not required;
taxon standardization via TNRS is used only if httr2 is available.

BAplot(
  formula = CBH ~ x + y, data = quadrat2_plot.df, taxon = "Species",
  circumference = TRUE, quadrat.size = 5, dead = "Morta",
  rm.dead = FALSE, alpha = 0.4, cex.radius = 2,
  legend = TRUE, long = FALSE, ind.coord = FALSE
)

If you use PhytoIn in scientific work, please cite this package and the underlying methods (e.g., Hurlbert 1971; Heck et al. 1975; Chave et al. 2014).

citation("PhytoIn")

Issues and pull requests are welcome:

• Issue tracker: https://github.com/PhytoIn/PhytoIn/issues

Please follow a minimal reproducible example (reprex) when reporting bugs.

GPL-3 © Rodrigo Augusto Santinelo Pereira

This README is generated from README.Rmd. To build:

rmarkdown::render("README.Rmd")

Add to .Rbuildignore:

^README\.Rmd$
^\.github$