has part is about denotes is_specified_output_of line graph organism data visualization x-axis y-axis count rarefaction curve >library(vegan) >rarefaction(x, subsample=5, plot=TRUE, color=TRUE, error=FALSE, legend=TRUE, symbol) http://hosho.ees.hokudai.ac.jp/~kubo/Rdoc/library/vegan/html/vegan-package.html Orlaith Burke Alejandra Gonzalez-Beltran Philippe Rocca-Serra STATO a rarefaction curve is a graph used for estimating species richness in ecology studies requires discussion