Joins species-level root traits from the Global Root Traits (GRooT) database
to a taxify() result by looking up accepted_name. GRooT aggregates root
trait records to per-species means. The .vtr carries the full GRooT trait
set (38 root traits); the default attaches the nine best-populated key traits,
and cols = "all" attaches every one. Run enrichment_cols("groot") to list
them.
Arguments
- x
A data.frame returned by
taxify().- cols
Which columns to attach:
NULL(default) the nine key traits below,"all"every GRooT trait, or a character vector of names. Seeenrichment_cols.- verbose
Logical. Default
TRUE.
Value
The same data.frame with additional columns (per-species means). The default set:
- root_diameter
Mean root diameter.
- specific_root_length
Specific root length.
- root_tissue_density
Root tissue density.
- root_n_concentration
Root nitrogen concentration.
- root_c_concentration
Root carbon concentration.
- root_mass_fraction
Root mass fraction.
- lateral_spread
Lateral spread.
- root_mycorrhizal_colonization
Root mycorrhizal colonization intensity.
- rooting_depth
Maximum rooting depth.
cols = "all" additionally attaches root chemistry (P/K/Ca/Mg/Mn
concentrations, C:N and N:P ratios), architecture (branching density and
ratio, stele diameter and fraction, cortex thickness, vessel diameter and
number), turnover (root lifespan, production, turnover rate, litter mass-loss
rate), and specific root area, respiration, and dry-matter content, among
others. Units follow the GRooT data paper; see the reference below.
Details
Source: GRooT database (Guerrero-Ramirez et al. 2021). Vascular plants. GRooT data are publicly available and used here with the data-paper citation requested by the authors.
References
Guerrero-Ramirez NR et al. (2021) Global root traits (GRooT) database. Global Ecology and Biogeography 30:25-37. doi:10.1111/geb.13179
Examples
# Runs offline against the bundled example database.
old <- options(taxify.data_dir = taxify_example_data())
taxify("Abies alba") |>
add_groot()
options(old)