[tdwg-content] Proposed new Darwin Core terms - abundance, abundanceAsPercent

[John Wieczorek]

Dear all,

GBIF has just published "Meeting Report: GBIF hackathon-workshop on
Darwin Core and sample data (22-24 May 2013)" at
http://www.gbif.org/orc/?doc_id=5424. Now that this document is
available for public reference, I would like to formally open the
minimum 30-day comment period on two related new terms proposed during
the workshop and defined in the referenced document.

The formal proposal would add the following new terms:

Term Name: abundance
Identifier: http://rs.tdwg.org/dwc/terms/abundance
Namespace: http:/rs.tdwg.org/dwc/terms/
Label: Abundance
Definition: The number of individuals of a taxon found in a sample.
This is typically expressed as number per unit of area or volume. In
the case of vegetation and colonial/encrusting species, percent cover
can be used.
Comment: Examples: "4 per square meter", "0.32 per cubic meter",
"24%". For discussion see
http://code.google.com/p/darwincore/wiki/Occurrence (there will be no
further documentation here until the term is ratified)
Type of Term: http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
Refines:
Status: proposed
Date Issued: 2012-03-01
Date Modified: 2013-09-25
Has Domain:
Has Range:
Refines:
Version: abundance-2013-09-25
Replaces:
IsReplaceBy:
Class: http://rs.tdwg.org/dwc/terms/Occurrence
ABCD 2.0.6: not in ABCD (someone please confirm or deny this)

Term Name: abundanceAsPercent
Identifier: http://rs.tdwg.org/dwc/terms/abundanceAsPercent
Namespace: http:/rs.tdwg.org/dwc/terms/
Label: Abundance as Percent
Definition: 100 times the number of individuals of a taxon found in a
sample divided by the total number of individuals of all taxa in the
sample.
Comment: Examples: "2.4%". For discussion see
http://code.google.com/p/darwincore/wiki/Occurrence (there will be no
further documentation here until the term is ratified)
Type of Term: http://www.w3.org/1999/02/22-rdf-syntax-ns#Property
Refines:
Status: proposed
Date Issued: 2012-08-01
Date Modified: 2013-09-25
Has Domain:
Has Range:
Refines:
Version: abundanceAsPercent-2013-09-25
Replaces:
IsReplaceBy:
Class: http://rs.tdwg.org/dwc/terms/Occurrence
ABCD 2.0.6: not in ABCD (someone please confirm or deny this)

The related issues in the Darwin Core issue tracker are
https://code.google.com/p/darwincore/issues/detail?id=142
and
https://code.google.com/p/darwincore/issues/detail?id=187

If there are any objections to the changes proposed for these new
terms, or comments about their definitions, please respond to this
message. If there are no objections or if consensus can be reached on
any amendments put forward, the proposal will go before the Executive
Committee for authorization to put these additions into effect after
the public commentary period.

Cheers,

John