All recordings of the working sessions will be available on TDWG Youtube: https://www.youtube.com/@tdwg
Environmental Samples and eDNA Task Group
- Objective: Consolidating the GGBN Data Standard, MIxS as well as the latest GBIF guide to publish DNA derived data in order to develop a data standard and best practice usage guide for sharing eDNA data.
- New TG, this is the first meeting. Meeting frequency not planned yet, maybe fortnightly meetings with GSC in the future.
- Follow discussions asynchronously in GitHub: GitHub - tdwg/gbwg: Genomic Biodiversity Interest Group
Questions
- Permit can be documented with GGBN’s permit extension
- How to express degree of uncertainty of species identification based on eDNA data?
FAIRe checklist addressed it by: percentage identity, percentage query cover, quality of each stage, threshold for filtering based on errors. The TG is hoping to bring these terms into the extension.
Darwin Core Maintenance Group
Meeting Document: Working Session Opening: Darwin Core Maintenance Group 1 - Google Docs
Questions
- GitHub for DwC DP testing - GitHub - gbif/dwc-dp-examples: Reference datasets for the DwC DP schemas
- Coming public review related to DwC DP: Every existing DwC terms will also be in the public review because of the addition of semantics layer and that is a normative change. All terms will be labeled different family of use cases to ease navigation
- Test publishing with IPT is already possible, but GBIF cannot ingest yet. They cannot commit until a stable version is available. Challenges includes identifiers and relationship between records
- GBIF is looking into what kinds of views to be supported. Catalogs = views on a particular perspectives.
- New terms from DwC-DP or even new extensions can be still added to Darwin Core Archive.
- PostgreSQL 16 Database script to generate a (slightly modified) version of DWC DP: https://github.com/ben-norton/dwc-dp-transformation-utils/blob/main/output/pgsql/CREATE_dwc_dp_pg16.sql
- In terms of timeline, if all goes well people can start using DwC-DP in January 2026. I suggest to invite John and GBIFS over to OBIS DCG to have a conversation to identify the overlap of publishing guide and examples that will be developed and explore how we can work effectively together.
Technical Architecture Group
GitHub: GitHub - tdwg/tag: Technical Architecture Group
Slides: TAG-WorkingSession2025 - Google Slides
- TDWG infrastructure overview was given.
- Workflow of translation of term list was extensively discussed. Automated translation is limited and can cause confusion. Domain-specific knowledge needs to be translated/proofread.
- I asked about guidelines for missing values. It was mentioned that it is very challenging due to the many conventions out there, that’s why there isn’t one. This was mentioned by a participant: Appendix 3: Standard values for unknown information — DataCite Metadata Schema 4.6 documentation