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

[John Wieczorek]

The example for abundanceAsPercent was my mistake. The "%" sign should
not be in there. It should just be a number. Apologies for the
confusion.

On Wed, Sep 25, 2013 at 6:10 PM, Birgitta König-Ries
<Birgitta.Koenig-Ries at uni-jena.de> wrote:
> Dear all,
>
> two questions/comments from someone who has relatively recently started
> to look into DarwinCore.
>
> 1. I find it a bit confusing, that, apparently "abundance" is allowed to
> contain percentage values, when there is a separate "abundanceAsPercent"
> term defined. Why do you need both, then?
> 2. If the term "abundanceAsPercent" is used, why is it
> necessary/desirable to include "%" as part of the value? That
> information is given already in the meta data (i.e. term definition),
> why replicate it on the data level?
>
> Yours,
>
> Birgitta
>
>
> Am 25.09.2013 14:35, schrieb 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
>> _______________________________________________
>> tdwg-content mailing list
>> tdwg-content at lists.tdwg.org
>> http://lists.tdwg.org/mailman/listinfo/tdwg-content
>
> --
>
> Birgitta König-Ries
> Heinz-Nixdorf-Stiftungsprofessur für verteilte Informationssysteme
> Institut für Informatik
> Friedrich-Schiller-Universität Jena
> http://fusion.cs.uni-jena.de
> Birgitta.Koenig-Ries at uni-jena.de
>
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