CTFS R-Format Tables
R. Condit
Wood Density of CTFS Species
There is a single R table of wood density estimates that includes every CTFS plot species, named wsg.ctfs2. The data can be downloaded from the CTFS datasets page. The table includes each species' mnemonic code along with plot names to facilitate matching with the main R Analytical Tables. The CTFS Biomass topic, function biomass.CTFSdb, includes functions which carry out this matching. Details about the wood density table are provided below.
| Column name | Description |
|---|---|
| sp | The species mnemonic. Full Latin name can be found in the R Analytical Species Table (spptable) for each plot, or in the Taxonomy Report at http:/ctfs.arnarb.harvard.edu/CTFSReports. This mnemonic is crucial in joining various databases, for instance The Full Tree and Stem tables to the Species tables and Wood Density Table |
| wsg | Wood specific gravity (dry wood density) |
| idlevel | The taxonomic level from which the WSG was taken. If genus, wsg is the mean for the entire genus, and likewise for family. This is not the same as IDlevel in the species table. |
| site | Plot name, matching the site name in the main database |
| genus | Genus name |
| species | Species name; note that a Genus-species name will appear in this table twice (or more), in different plots with different sp codes |
| genwood | Mean WSG for the genus; if idlevel=genus, this is the value in the wsg column |
| famwood | Mean WSG for the family; if idlevel=family, this is the value in the wsg column |
| spwood | Mean WSG for the species; iflevel=species, this is the value in the wsg column |
| count | Internal variable, used in creating table and not in analyses |
| groupID | Internal variable, used in creating table and not in analyses |