Work collaboratively in IUCN Red List assessments and manage online biodiversity databases, including a graph-based taxonomy system, species traits and habitats, and species occurrences.
Instead of an "accepted" field, the data model should allow to have any number of checklists, and allow the users to track the changes from one checklist version to another.
Describe the existence of the taxa in user-defined territorries, and their endemic status. Territories can be hierarchically described e.g. Iberia includes Pt and Hs.
e.g. if Linkagrostis is PART_OF Agrostis [sensu Franco], which is PART_OF Poaceae, then we don't need Linkagrostis to be PART_OF Poaceae. These superfluous links could be removed.
Territories and taxa must have a "complete" boolean field so that inference of OccurrenceStatus and NativeStatus can be precisely made when it is true. For example, if a territory is complete, the AbundanceLevel of a given taxon in the territory can be inferred from its children; if it is not complete, it can't be inferred.
Similar situation for taxon endemism.