[tdwg-content] DwC Occurrence [SEC=UNCLASSIFIED]
deepreef at bishopmuseum.org
Tue May 31 23:17:52 CEST 2011
>I totally agree! An individual is NOT a taxon. It just belongs to one
I would refine that to "It just is asserted to belong to one..."
> so we need to focus our attention on individual-at-event type
> of assertions.
I would classify individual-at-event instances as "instances", rather than
assertions. I think they represent what most of us would treat as "facts".
"Assertions" are more like opinions -- like "what taxon concept this
individual falls within".
> That individual is linked to a TaxonName which represents a
> TaxonConcept. Why do we need to talk about species at all?
> All we have to deal with is individuals, taxon names, and taxon concepts.
I think of "species" as the most popular kind of "taxon concept". Not like
strict Linnean rank sort-of species.
> I also agreed that an individual doesn't have to be whole,
> so in my opinion "parts" can also be considered 'the individual in
That is my old thinking. My new thinking is that you abstract up to an
whole organism when you have a part (e.g., tissue sample), when representing
an Occurrence; just as you would abstract down to "Indidividual", when you
what to represent Taxon-at-Event for an Occurrence.
> Similarly, I also agree that up to populations we can still talk about
> However, it is important to be able to link "parts" to the whole
> if needed, e.g. is_part_of.
Agreed! The link needs to be there. We just need to figure out which links
are within-class (e.g., parent-child), and which are across classes.
In haste, but still with Aloha,
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