The Darwin Core Archive version 1.0 documentation that I found describes and elements and a few others that don't seem to be supported by the harvester. For an example in the EOL opendata archive, see version 1.2 of the dynamic hierarchy.
Is this intentional? Are DwCA meta.xml files supposed to be run through a preprocessor before being deposited in opendata? Or is this just a feature that isn't yet supported by the harvester?
(I haven't tried this, I just make a conclusion based on the code in app/models/resource/from_meta_xml.rb.)