schemas/VegCore/ERD/VegCore.ERD.mwb: taxon_observation.sampling_event: made it required so that there is always a sampling_event to scope the primary_collector/collector_number when provided. (for specimens, this will have the same event information (date_range, participants, place) as the taxon_observation.)
schemas/VegCore/ERD/VegCore.ERD.mwb: taxon_observation.sampling_event: made it required so that there is always a sampling_event to scope the primary_collector/collector_number when provided. (for specimens, this will have the same event information (date_range, participants, place) as the taxon_observation.)