Slides available as PPTX and as PDF
Darwin Core - https://dwc.tdwg.org/ - doi:10.1371/journal.pone.0029715
Darwin Core RDF Guide (SWJ) - doi:10.3233/SW-150199
DSW - Darwin Semantic Web - doi:10.3233/SW-150203
BCO - Bio-Collections Ontology - doi:10.1371/journal.pone.0089606
BFO - Basic Formal Ontology
CO - Crop Ontology