The number of unique and shared annotations made by our volunteer habitat ontology group by class. Unique annotations are classes added to a habitat description by only one group (e.g., only one group added “canopy coverage = closed” to the phrase “pine forest”).

  Part of: Pender J, Sachs J, Lujan-Toro B, Macklin J (2020) Even Simple Habitat Ontologies are Hard to Use. Biodiversity Information Science and Standards 4: e59190.