This alignment relates the (Queensland) CORVEG logical model to the O&M conceptual model.
CORVEG reports a large set of observations of different properties of a site. The total number of potentially observed properties is large. The description of the site itself is grouped into thematic groups named Geology, Disturbance, Situation etc. The description of the vegetation is organized by strata. The description of the taxa at a site is generally organized by taxon, and also by strata.
Principles of alignment of CORVEG to O&M
Following the standard observation model:
every 'value' is recorded as the hasResult of an Observation
Since the observation type is indicated by properties of the observation (i.e. the observedProperty and hasFeatureOfInterest), the generic classes Observation and ObservationCollection can be used for all observed data. The controlled vocabulary of ObservableProperties is maintained separately, and can be updated frequently, without having to touch the main data structures.
We could have defined a sub-class of ObservationCollection for each CORVEG table (i.e. thematic group), but this would tie the ontology directly to CORVEG, which is undesirable because
the CORVEG conceptual model does not match all the data submitted by the various providers, while TERN-plot - which is a lightly extended SSN/SOSA model - is flexible enough to cope
too much specialization/customization compromises compatibility with observation data from other sources or providers, or from other discipline areas
Where an ObservationCollection does correspond with a row from a CORVEG table, the name of the table can be indicated using the dct:type property. This may assist discovery and processing by users or applications who are familiar with CORVEG. A list of observation groups is maintained as a TERN-plot 'controlled vocabulary'.
Detailed implementation of CORVEG entities in RDF can be found under Table Mappings.