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1/26/2018: Tom Barry (tom@caff.is) contact via https://www.dataone.org/contact.

I work with the Conservation of Arctic Flora and Fauna (CAFF - www.caff.is) which is the biodiversity working group of the Arctic Council. CAFF has a focus on data management and its Arctic Biodiversity Data Service (ABDS - www.abds.is) serves as the Arctic node in GBIF, OBIS, is the ARctic Biodiversity Observation Network in GEOBON etc I was reading about your initiative and wondered if there was an interest from DataONE to arrange a call to discuss potential cooperation.

I took a brief look at this. A "slendernodes" approach would be fairly easy.

There is an RSS feed available at http://geo.abds.is/ipt/rss.do that provides links to the metadata documents and also provides publication dates.

There are 70 documents in total, EML 2.1.1 format. All but one validate. That one document that does not validate has a single invalid URL (has embedded brackets, which violates RFC 2396, easily fixable).

I was somewhat mistaken, what I reported on was only part of the ABDS repository. There are two parts, the IPT part (described above), and also a "Geonetwork" part. In the geonetwork part, there are 311 documents. There's some indication that geonetwork installations provide OAI-PMH access, but I'm not smart enough to figure that out, apparently.

It wasn't too hard to figure out a REST access to the metadata, however. I was able to access all 311 documents programmatically. Most but not all appear to have regular gmd format, but none of them validate due to a variety of issues. An example reported by our validation:

2019-09-10 16:00:58,483 - schema_org.xml_validator - INFO - Running validation against all format IDs.
2019-09-10 16:00:59,094 - schema_org.xml_validator - ERROR - XML document does not validate. Errors and warnings:
  <string>: Line 76: Element '{http://www.isotc211.org/2005/gco}Date': '' is not a valid value of the union type '{http://www.isotc211.org/2005/gco}Date_Type'.
  <string>: Line 86: Element '{http://www.isotc211.org/2005/gco}Date': '' is not a valid value of the union type '{http://www.isotc211.org/2005/gco}Date_Type'.
  <string>: Line 268: Element '{http://www.opengis.net/gml}TimePeriod': This element is not expected. Expected is one of ( {http://www.opengis.net/gml/3.2}AbstractTimePrimitive, {http://www.opengis.net/gml/3.2}TimeInstant, {http://www.opengis.net/gml/3.2}TimePeriod, {http://www.opengis.net/gml/3.2}TimeNode, {http://www.opengis.net/gml/3.2}TimeEdge ).
  <string>: Line 363: Element '{http://www.isotc211.org/2005/gco}Date': '' is not a valid value of the union type '{http://www.isotc211.org/2005/gco}Date_Type'.
  <string>: Line 376: Element '{http://www.isotc211.org/2005/gco}Boolean': 'undefined' is not a valid value of the atomic type 'xs:boolean'.

This particular document can be accessed at
http://geo.abds.is/geonetwork/srv/eng/xml.metadata.get?id=518

Furthermore, 71 of the 311 appear to be a Dublin Core variant but still do not validate. Such an example can be found at http://geo.abds.is/geonetwork/srv/eng/xml.metadata.get?id=2702350 . It appears to be something like OAI-DC?

The more I look at it, those 71 documents look like they could be translated into a valid document with format ID http://ns.dataone.org/metadata/schema/onedcx/v1.0 , just like we are looking at with CUAHSI.