Table 7 Structure of the Standards table, which contains details about the standards and units used to quantify trait data.

From: The Octocoral Trait Database: a global database of trait information for octocoral species

Variable

Value

standard_id

An ID for each measurement unit used. It can be cross-referenced with the standard_id column from the core OctocoralTraits v2.2 table (described in Table 1). Since this data descriptor was intended to be integrated with existing data for Scleractinians in the Coral Trait Database, we developed a code to prevent duplicates. Specifically, whenever a measurement unit was already present, the same ID number was used in this data descriptor. For measurement units not previously present, new numbers were assigned in order and preceded by the letters “st” (e.g., st1, st2, st3).

standard_name

The name of the standard (e.g., density, area…etc).

Standard_unit

A unique name for each measurement unit associated to the standard_id column.