Citation.js: 2022 in review

Following up on the previous two updates this year (Version 0.5 and a 2022 update and Version 0.6: CSL v1.0.2), here are some updates from the second half of 2022, as well as some statistics.

Sapygina decemguttata, a small wasp, observed July 8th, 2021

Changes

• The mappings of the Wikidata plugin were updated, especially to accomodate for software.
• The default-locale setting of some CSL styles is now respected.

New plugins

• plugin-enw for .enw files (similar, but different from Refer files).
• plugin-wikipedia-templates for outputting Citation Style 1 templates to use on pages of the English Wikipedia.

New users

• WikiPathways is in the process of moving to a new site which uses Citation.js to generate citations.
• Page, R. D. (2022). Wikidata and the bibliography of life. PeerJ, 10, e13712. 10.7717/peerj.13712
• Boer, D. (2021). A Novel Data Platform for Low-Temperature Plasma Physics. [Master’s thesis] Radboud University, Nijmegen, The Netherlands. URL

Statistics

@citation-js/core was downloaded approximately 240,000 times in 2022, against 205,000 times in 2021. The legacy package citation-js was downloaded approximately 160,000 times (compared to 190,000 times in 2021). This is good, as it indicates people are starting to use the new system more often. Note that most downloads of citation-js also lead to a download of @citation-js/core so most people still use the legacy package. The shift to stop using citation-js seemed to have started in October 2021, which coincides with the time time I forgot to update that package for 2 months after releasing v0.5.2 of @citation-js/core.

Since February 2022 a relative decrease in downloads of @citation-js/plugin-wikidata compared to core is also visible. In December the Wikidata plugin was downloaded more than 50% fewer times, in fact. This is also good and the exact point of the modularisation introduced back in 2018: to let users choose which formats to include. The DOI plugin was similarly less popular, while the BibTeX and CSL plugins were — as expected — almost always included. Surprisingly, BibJSON, a very niche format, only had a 25% reduction (maybe due to confusion with BibTeX and the internal BibTeX JSON format), while RIS, after BibTeX the most common format, had a 50% reduction as well.

New Year’s Eve tradition

After the releases on New Year’s Eve of 2016, 2017, and 2021, this New Year’s Eve also brings the new v0.6.5 release which changes the priority of some RIS fields in very specific situations, most notably the date field of conference papers (now using DA instead of C2).

Happy New Year!

Explore identification keys on the world map

The website of the Library of Identification Resources has a new feature: a map view. The resources in the catalog are associated with a geographic scope to approximate which species in a taxonomic group can be identified. These geographic scopes are usually countries or continents but can also be subdivisions within countries, multinational ecological regions like mountain ranges, and biogeographical realms.

The scopes are also linked to Wikidata identifiers, and the Wikidata identifiers are linked to iNaturalist identifiers. This makes it possible to get GeoJSON of these places from the iNaturalist API. Then the places can be displayed with the Leaflet library, and shaded according to the number of resources associated with it.

World map with countries, continents and other regions shaded according to the number of associated resources.

There are a number of places that are not displayed:

1. The biogeographical realms are not all in iNaturalist (e.g. Indomalayan realm).
2. Some places like have ambiguous definitions (e.g. the Middle East) making it difficult to decide whether to link their Wikidata & iNaturalist entities if different definitions are used.
3. Other places are historical and are difficult to express in modern borders (e.g. Japanese Empire in ca. 1930).
4. A number of resources have scopes that have never been expressed in political borders (e.g. “the coast of Italy”).

All in all 347 of the current 1286 resources are not displayed, though it should be noted that 72 of those have no scope (e.g. keys for all globally known species).

Either way, the map clearly shows the geographical bias: Western Europe, especially the Netherlands, is overrepresented. This is because I have been mostly adding Dutch resources and various series from the UK (RES Handbooks), France (Faune de France), Denmark (Danmarks Fauna), Sweden (online keys and Nationalnyckeln), and Norway (Norske Insekttabeller).

The map is available from the home page and at https://identification-resources.github.io/catalog/visualizations/map.