Extract species number of any plant family

Produces a CSV file listing the number of species and genera within the target botanical families of vascular plants available at Plants of the World Online (POWO).

Usage

powoFam(family,
        verbose = TRUE,
        source = "wcvp",
        save = FALSE,
        dir = "results_powoFam",
        filename = "output")

Arguments

family: Either one family name or a vector of multiple families that is present in POWO.
verbose: Logical, if FALSE, a message showing each step during the POWO search will not be printed in the console in full.
source: Data source to be mined. The default "wcvp" uses the bulk data of the World Checklist of Vascular Plants (WCVP), the taxonomic backbone of POWO, which is downloaded once from Kew and cached on disk (see tools::R_user_dir("expowo", "cache")). It is refreshed only when Kew releases a new WCVP version. Use "powo" to mine the source page of each taxon at the POWO website instead, which is much slower and may be blocked by POWO.
save: Logical, if TRUE, the search results will be saved on disk.
dir: Pathway to the computer's directory, where the file will be saved provided that the argument save is set up in TRUE. The default is to create a directory named results_powoFam and the searched results will be saved within a subfolder named after the current date.
filename: Name of the output file to be saved. The default is to create a file entitled output.

Value

A table with the following fields: family, genus_number (counting of genera within the specified plant family), species_number (countig of species within each genus), kew_id (the family code used in Kew's database), powo_uri (the URI to access the family in POWO).

Author

Debora Zuanny & Domingos Cardoso

Examples

if (FALSE) { # \dontrun{
library(expowo)

powoFam(family = "Lecythidaceae",
        save = FALSE,
        dir = "results_powoFam",
        filename = "Lecythidaceae_spp_number")
} # }