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<p style="box-sizing: border-box; margin-bottom: 16px; color: rgb(51, 51, 51); line-height: 22.3999996185303px; background-color: rgb(255, 255, 255);">
<font size="2">The term "quantity" seems to beg a qualifier (i.e., "sampleQuantity"), and perhaps this is because the definition of "quantity" seems insufficient/vague. I was wondering why the definition in an earlier email (19 Aug. 2014) from Eammon, "quantity:
the number or enumeration value of the quantityType (e.g., individuals, biomass, biovolume, BraunBlanquetScale) per samplingUnit or a percentage measure recorded for the sample." was not used The examples given ("12.5, r") are not very helpful, as a decimal
quantity is not immediately what comes to mind without context (I know, that's in quantityType). What is used for quantityType is actually more relatable, or enumeration of what is in the sample data primer.</font></p>
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<font size="2">Sorry if I have missed other emails discussing this, but I am very glad to see the doors opening to the huge volume of experimental data from agriculture as well as other fields.</font></p>
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<font size="2">Cheers!</font></p>
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<font size="2">Gail</font></p>
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<div>Gail E. Kampmeier</div>
<div>Illinois Natural History Survey</div>
<div>Prairie Research Institute</div>
<div>University of Illinois</div>
<div>1816 So. Oak St.</div>
<div>Champaign, IL 61820</div>
<div><a href="http://www.inhs.illinois.edu/~gkamp">www.inhs.illinois.edu/~gkamp</a></div>
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<div id="divRpF885135" style="direction: ltr;"><font face="Tahoma" size="2" color="#000000"><b>From:</b> tdwg-content-bounces@lists.tdwg.org [tdwg-content-bounces@lists.tdwg.org] on behalf of Éamonn Ó Tuama [GBIF] [eotuama@gbif.org]<br>
<b>Sent:</b> Friday, November 07, 2014 08:21<br>
<b>To:</b> tdwg-content@lists.tdwg.org<br>
<b>Subject:</b> [tdwg-content] terms for sample data in DwC<br>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">In compliance with the directions for requesting changes to the Darwin Core (DwC) vocabulary, we hereby submit to the TDWG Content list a proposal for five new terms to
express information on sample-based data. </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">Sample-based data is a type of data available from thousands of environmental, ecological, and natural resource investigations. These can be one-off studies or monitoring
programmes. Such data are usually quantitative, calibrated, and follow certain protocols so that changes and trends of populations can be detected. This is in contrast to opportunistic observation and collection data which today form a significant proportion
of openly accessible biodiversity data. Sample-based data are often not shared because the underlying protocols have been hard to encode in a standardised way. For further background information and examples, please consult the sample data primer document
[1].<span style="color:#1F497D"></span></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""> </span></b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">We cannot emphasise enough that our intention here is not to establish how data should be captured or modelled but rather demonstrate one way data can be exposed to maximize
discoverability and reuse. In particular, GBIF, in association with EU BON [2] project partners, is exploring how the IPT and Darwin Core Archives can enable the flow of sample based data in support of GEO BON Essential Biodiversity Variables (EBVs) [3].</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""> </span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">While DwC already provides many terms that are relevant for describing sample-based data, based on several inputs (GBIF organised workshop on sample data, May 2013 ; previous
discussions on the TDWG mailing list; discussions on the EU BON mailing list), we have identified a need for five new terms. These are:</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""> </span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">sampleSize</span></b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""><a href="https://github.com/tdwg/dwc/issues/10" target="_blank"><span style="color:purple">https://github.com/tdwg/dwc/issues/10</span></a></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Justification</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">Required for sharing organism abundance data from controlled sampling and monitoring surveys (i.e., sampling events). For an introduction to the sampling proposal please
see<span class="apple-converted-space"> </span><a href="http://links.gbif.org/ipt-sample-data-primer" target="_blank"><span style="color:purple">http://links.gbif.org/ipt-sample-data-primer</span></a>.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Definition</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">A numeric value for the time duration, length, area or volume involved in the sampling event.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Comment</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">The terms sampleSize and sampleSizeUnit are required to be used as a pair. The value of sampleSize is a number. Example: “5” for the value part of 5m.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Term group</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">Event</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""> </span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">sampleSizeUnit</span></b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""><a href="https://github.com/tdwg/dwc/issues/11" target="_blank"><span style="color:purple">https://github.com/tdwg/dwc/issues/11</span></a></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Justification</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">Required for sharing organism abundance data from controlled sampling and monitoring surveys (i.e., sampling events). For an introduction to the sampling proposal please
see<span class="apple-converted-space"> </span><a href="http://links.gbif.org/ipt-sample-data-primer" target="_blank"><span style="color:purple">http://links.gbif.org/ipt-sample-data-primer</span></a>.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Definition</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">The unit of measurement used in the sampling event.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Comment</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">The terms sampleSize and sampleSizeUnit are required to be used as a pair, e.g., “5 metre”. Example values of sampleSizeUnit include “minute”, “hour”, “day, “metre”, “square
metre”, “cubic metre”. Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure<span class="apple-converted-space"> </span><a href="http://www.wurvoc.org/vocabularies/om-1.8/" target="_blank"><span style="color:purple">http://www.wurvoc.org/vocabularies/om-1.8/</span></a><span class="apple-converted-space"> </span>of
SI units, derived units or other non-SI units accepted for use within the SI (e.g. minute, hour, day, litre). Example: “metre” for the unit part of 5m.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Term group</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">Event</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""> </span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">quantity</span></b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""><a href="https://github.com/tdwg/dwc/issues/12" target="_blank"><span style="color:purple">https://github.com/tdwg/dwc/issues/12</span></a></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Justification</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">Required for sharing organism abundance data from controlled sampling and monitoring surveys (i.e. sampling events). For an introduction to the sampling proposal please
see<span class="apple-converted-space"> </span><a href="http://links.gbif.org/ipt-sample-data-primer" target="_blank"><span style="color:purple">http://links.gbif.org/ipt-sample-data-primer</span></a>.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Definition</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">The quantity, per sampling event, given as a number or enumeration value for the quantityType.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Comment</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">The terms quantity and quantityType are required to be used as a pair. The value of quantity is a number or enumeration. Examples: “12.5”, “r”</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Term group</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">Occurrence</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""> </span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">quantityType</span></b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""><a href="https://github.com/tdwg/dwc/issues/13" target="_blank"><span style="color:purple">https://github.com/tdwg/dwc/issues/13</span></a></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Justification</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">Required for sharing organism abundance data from controlled sampling and monitoring surveys (i.e., sampling events). For an introduction to the sampling proposal please
see<span class="apple-converted-space"> </span><a href="http://links.gbif.org/ipt-sample-data-primer" target="_blank"><span style="color:purple">http://links.gbif.org/ipt-sample-data-primer</span></a>.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Definition</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">The entity to which the number or enumeration reported in quantity refers.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Comment</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">The terms quantity and quantityType are required to be used as a pair, e.g., “14 individuals”. The value of quantityType (i.e., the entity being measured) is expected to
be drawn from a small controlled vocabulary. Examples: “Individuals”, “% Biomass”, “% Biovolume”, “% species”, “% coverage”, “BraunBlanquetScale”, “DominScale”.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Term group</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">Occurrence</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""> </span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">parentEventID</span></b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""><a href="https://github.com/tdwg/dwc/issues/9" target="_blank"><span style="color:purple">https://github.com/tdwg/dwc/issues/9</span></a></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Justification</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">Allows arbitrary linking of sub sampling events, e.g., for nested sampling plots. This was demanded by several people during the discussion of the TDWG sample based data
session. For an introduction to the sampling proposal please see<span class="apple-converted-space"> </span><a href="http://links.gbif.org/ipt-sample-data-primer" target="_blank"><span style="color:purple">http://links.gbif.org/ipt-sample-data-primer</span></a>.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Definition</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">An event identifier for the super event which is composed of one or more sub-sampling events.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Comment</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">The value must refer to an existing eventID. If the identifier is local it must exist within the given dataset. Example: “A1” identifying the main Whittaker Plot in nested
samples, each with their own eventID (e.g., “A1:1”, “A1:2”).</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">#Term group</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">Event</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""> </span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">None of the existing DwC terms is sufficient for any of the proposed terms although two are somewhat related: sampleEffort ("The amount of effort expended during an Event")
and individualCount ("The number of individuals represented present at the time of the Occurrence"). Neither are adequate – sampleEffort just provides a free text statement so is hard to parse in comparison to sampleSize and sampleSizeUnit and individualCount
refers exclusively to individuals and not percentages or entities like biomass, biovolume, etc.</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""> </span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">[1]<span class="apple-converted-space"> </span><a href="http://links.gbif.org/ipt-sample-data-primer" target="_blank"><span style="color:purple">http://links.gbif.org/ipt-sample-data-primer</span></a></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">[2]<span class="apple-converted-space"> </span><a href="http://eubon.eu/" target="_blank"><span style="color:purple">http://eubon.eu</span></a></span></p>
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<p class="MsoNormal"><u><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">[3]<span class="apple-converted-space"> </span><a href="http://www.earthobservations.org/documents/cop/bi_geobon/ebvs/201301_ebv_paper_pereira_et_al.pdf" target="_blank"><span style="color:purple">http://www.earthobservations.org/documents/cop/bi_geobon/ebvs/201301_ebv_paper_pereira_et_al.pdf</span></a></span></u><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">____________________________________________________</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"">Éamonn Ó Tuama,<span class="apple-converted-space"> </span></span><span lang="EN-US" style="font-size:11.0pt; font-family:"Calibri","sans-serif"">Markus Döring, GBIF Secretariat</span><span style="font-size:11.0pt; font-family:"Calibri","sans-serif""></span></p>
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