VegCore: more info about the schema base_class referenced_class: referenced_class derived_class source party plot geo event method community occurrence individual specimen taxon < plot occurrence > source traceable party party_list party_list_entry data_owner organization person dataset record place subplace plot subplot geoplace geopath geovalidatable_place geovalidation event community geological_context place_observation soil_observation project method taxa_sampling_event stratum size_class taxon_occurrence taxon_observation taxon_path taxon_string taxon_name taxon_concept taxon_assertion taxon_scrub taxon_determination reobservable individual individual_observation stem stem_observation collection specimen specimen_observation aggregate_observation taxon_absence taxon_presence individual_count