[tdwg-content] A proposal to improve Darwin Core for invasive species data

Richard Pyle deepreef at bishopmuseum.org
Sat Jun 25 08:13:44 CEST 2016

Hi All,


When we discussed the scope of the class “Organism”, I believe we considered the upper limit of “population” – but I can’t remember whether we accepted that upper limit.  If so, then the “Organism” instance participating in an particular Occurrence instance could logically be qualified as “invasive” or “native” (or whatever), in which case it seems more appropriate to apply terms such as “native”, “introduced”, “invasive”, etc. to dwc:establishmentMeans


I realize this is squishy, but we don’t really have another class within DwC-space to which the property of “native”, “introduced”, “invasive”, etc. can be applied.  Moreover, I don’t think there SHOULD be such a class, because it short-circuits the basis for the presence of Taxon X at Location Y (i.e., this should be established via Taxon-->Identification-->Organism-->Occurrence-->Event-->Location).


I realize this is an extraordinarily convoluted way of saying “Taxon X is native to Location Y”; but ultimately that’s what we want…. Right?





From: tdwg-content [mailto:tdwg-content-bounces at lists.tdwg.org] On Behalf Of Steve Baskauf
Sent: Sunday, June 19, 2016 1:45 PM
To: Quentin Groom
Cc: tdwg-content at lists.tdwg.org
Subject: Re: [tdwg-content] A proposal to improve Darwin Core for invasive species data


Getting caught up on this thread after a holiday.  

Some previous discussion on dwc:establishmentMeans in 2010 was at:

The opinion expressed in that thread was that dwc:establishmentMeans was a property of an organism at a particular place and time (i.e. an Occurrence.): how did a particular organism come to be in that place at that time.  In that view, an organism might be at a location because it was a representative of a native species, or because it was managed at that location by humans.  In that perspective, it would not make sense to use the value "invasive" with dwc:establishmentMeans because that is more of a property of a species at a location rather than an individual organism at that location and time.  


Quentin Groom wrote: 

I've been working on a proposal to improve Darwin Core for use with invasive species data.


The proposal is detailed on GitHub at https://github.com/qgroom/ias-dwc-proposal/blob/master/proposal.md.


The proposal is for a new term "origin" and suggested vocabularies for establishmentMeans and occurrenceStatus.


I'd welcome your feedback on the proposal.


>From my perspective it provides some needed clarity on the establishmentMeans and occurrenceStatus fields, but also adds the origin that is needed for invasive species research and for conservation assessments.


I'm not sure of the best way to discuss this, but if you have concrete proposals for changes you might raise them as issues on GitHub, as well as mentioning them here.







Dr. Quentin Groom

(Botany and Information Technology)


Botanic Garden Meise

Domein van Bouchout

B-1860 Meise



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Steven J. Baskauf, Ph.D., Senior Lecturer
Vanderbilt University Dept. of Biological Sciences
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