View source for IIIF Linking Darwin Core

Part of [[IIIF| IIIF Pages]]

Many institutions publish their data to GBIF and other data aggregators using the [https://dwc.tdwg.org/ Darwin Core] metadata standard and its extensions. During the course of the project we established a convention for using the [https://www.tdwg.org/standards/ac/ Audubon Core] multimedia extension to publish IIIF manifest locations through Darwin Core. The extension is used in essentially the same way as it would be for a JPEG file. The figure below shows an example of a Audubon Core extension in a Darwin Core Archive metadata file.

<pre>
<extension 
encoding="UTF-8"
fieldsTerminatedBy=","
linesTerminatedBy="\n"
fieldsEnclosedBy="""
ignoreHeaderLines="0"
rowType="http://rs.tdwg.org/ac/terms/Multimedia">
 <files>
<location>darwin_core_images.csv</location>
 </files>
 <coreid index="0"/>
 <field index="1" term="http://purl.org/dc/elements/1.1/type"/>
 <field index="2" term="http://purl.org/dc/elements/1.1/format"/>
 <field index="3" term="http://rs.tdwg.org/ac/terms/accessURI"/>
 <field index="4" term="http://rs.tdwg.org/ac/terms/associatedSpecimenReference"/>
 <field index="5" term="http://purl.org/dc/terms/identifier"/>
 <field index="6" term="http://purl.org/dc/terms/description"/>
 <field index="7" term="http://ns.adobe.com/xap/1.0/rights/Owner"/>
 <field index="8" term="http://purl.org/dc/terms/rights"/>
 <field index="9" term="http://purl.org/dc/elements/1.1/rights"/>
 <field index="10" term="http://purl.org/dc/elements/1.1/creator"/>
 <field index="11" term="http://rs.tdwg.org/ac/terms/serviceExpectation"/>
</extension>
</pre>

In the associated CSV file (in this case darwin_core_images.csv) the columns for the manifests would contain “application/ld+json” in the third column (dc:format), the URI of the IIIF manifest in the fourth column (ac:accessURI) and “IIIF” in the twelfth column (ac:serviceExpectation).

This can be implemented using the GBIF Integrated Publishing Toolkit. All records in the Meise Botanic Garden Herbarium that have an image of the specimen (about 1.3 M images available at the time of writing) have 2 rows in the Audubon Core extension. The first row is describing the available JPEG file, the second row is including the IIIF manifest.




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