Fig 1.
CitSci.org extensible metadata schema related to a simple field observation.
An observer measures the turbidity of a stream using a Secchi disk. We capture the protocol used to measure turbidity (Secchi disk) in a metadata table (TBL_Metadata) and relate it to the observation (TBL_Observations). This extensible structure allows us to capture any type of metadata, and relate it to observations in addition to other entities, such as projects, individuals, media, etc.