D/N information should apply to year range

[peterdesmet]

As discussed with @Groom, the degree of naturalization (D/N) should apply to the year range defined by FR (first record) and MRR (most recent record).

Currently it is confusing if a casual taxon with an MRR of e.g. 1945 should be labelled extinct or casual. The best way is to indicate what the status was of that taxon for that time period:

1944    1957    casual

That also means that none of the taxa should be labelled as extinct.

This information should be updated.

[qgroom]

In the case where a taxon is extinct would there be a down side if we generated a second record with an event date of MMR+1 to the current year?

[peterdesmet]

That is indeed one of the options we discussed. It would be created by the script for every taxon that does not have a MMR = this year.

[qgroom]

I'm beginning to wonder if we actually need 'extinct' in the occurenceStatus vocabulary. If occurenceStatus only refers to the specified dates and place, then perhaps we only need 'extant', 'presence uncertain' and 'absent'.

[peterdesmet]

Well, "extinct" is a subcategory of "absent" in my opinion, with the extra implied info that it was "extant" before.

Btw, I know it's the IUCN vocab, but "present" is a lot more intuitive to me than the term "extant". I suggest we accept "present" as a synonym term?

[qgroom]

Indeed, I just don't feel it is good to make the implication about an earlier period when we want people to create DwC records that only refer to the place and time specified in the record.

I agree about present verses extant. I think they can be considered exact synonyms on SKOS.

[peterdesmet]

Updated occurenceStatus extant to present in 5485d20, closing this issue.