This working group is tasked with defining internal data structures required for effective trait data and annotation,  as well as identifying external data sources that will commonly be used in conjunction with species trait data. Key internal data include trait observations, environmental metadata, and  taxonomic data.  Key external data include: geospatial data, digital elevation models, soils data, climate data, land use data. 

Group participants: Sandra Diaz, Matt Jones, and Amy Zanne.

Anticipated products: The goal of the data structure working group is to produce an internal working document to inform database and software development.