Lars Willighagen

@larsgw
137 Followers
89 Following
522 Posts
Studying ecology, biodiversity, taxonomy. PhD candidate @Radboud_uni. Interested in bibliographic data (@citationjs), digital humanities (#CDLI), statistics.
Sitehttps://larsgw.github.io
GitHubhttps://github.com/larsgw
ORCIDhttps://orcid.org/0000-0002-4751-4637
iNaturalisthttps://www.inaturalist.org/people/larswillighagen
Expert question: When did the Europeans started stamping (library stamps) into library collections? In other words: who knows the oldest library stamp? And did non-European libraries did this stamping too? #bookhistory #libraries

One of my first open source projects, Citation.js (@citationjs), turns 10 years old today!

https://larsgw.blogspot.com/2025/09/10-years-of-citationjs.html

10 years of Citation.js

10 years ago, on September 28th, 2015, I pushed the first commit of “C [1] ”, which would later form the basis of Citation.js . Back then, ...

Ik wilde zeggen "Google Ngram Viewer heeft helaas geen corpus voor Nederlandse woorden," maar #DBNL wel! Lijkt erop dat "giftig" over het algemeen al een lange tijd meer werd gebruikt dan "vergiftig".

https://www.dbnl.org/ngram-viewer/

De eerste paar edities van Heukels' Flora schrijven "Vergiftig!" (als bijv. naamwoord) in plaats van gewoon "Giftig!" bij het beschrijven van planten, iemand enig idee of dat toen meer gangbaar was? Of lag het meer aan de schrijver, welk van de twee werd gebruikt?

#nederlands #taal #planten

In case you missed it, I've recently published a trilogy of posts about adding Canadian legal data to #Wikidata in order to take advantage of linked data to find insights not currently possible with simple search.

1. How I use Zotero + OpenRefine + QuickStatements to create Scholia profiles from Wikidata (https://librarian.aedileworks.com/2025/08/01/how-i-use-zotero-openrefine-quickstatements-to-create-scholia-profiles-from-wikidata/)

2. How to get through a Scholarly split (https://librarian.aedileworks.com/2025/09/08/how-to-get-through-a-scholarly-split/)

3. All your Wikibase are belong to us: https://librarian.aedileworks.com/2025/09/09/all-your-wikibase-are-belong-to-us/

The 'color' npm package has been compromised: https://fasterthanli.me/articles/color-npm-package-compromised
color npm package compromised

Note: the situation is still unfolding, I’ll update this article as more comes in. On September 8 2025, around 13:00 UTC, someone compromised Josh Junon’s npm account (qix) and started publishing b...

fasterthanli.me
Fun news: As of September 1st, I have been appointed professor in the field of “FUNctional Ecology.” Many thanks to everyone who has collaborated with me and supported me over the years, and in doing so contributed to this success.
For those curious about my plans for the future: on February 6, 2026, I will give my inaugural lecture (yes, that’s 6-2-26, an easy-to-remember palindrome—but there will be a reminder later). It’s a public event, so if you’re reading this, mark your calendar!
Our paper on the Library of Identification Resources is out! In it, we describe how and why to record publications for the taxonomic identification of organisms in a FAIR database, and how to query that data to find applicable resources for an insect or a plant in NW Europe. Next, we will look at if and when invasive species are covered by such keys.

https://doi.org/10.3897/BDJ.13.e161726

#taxonomy #biodiversity #identification #insects
Library of Identification Resources: a FAIR overview of taxonomic keys

Biodiversity is declining globally, and ecological research is key to monitor and counteract this decline. Such research requires the taxonomic identification of organisms by both professional and citizen scientists. A complete overview of resources for taxonomic identification is therefore crucial but missing, also posing problems for analysis into gaps in the taxonomic coverage of available identification resources. To create a repository of this kind, we applied the FAIR principles, collected data on identification resources, and created a search engine to find relevant identification resources for a given observation of an organism within this data. So far, the data collection has been strongly biased towards keys for insects of Northwestern Europe, leading to incomplete search results for other, underrepresented taxa and regions, which is then indicated in the interface. Our Library of Identification Resources already contains 2,158 works and is made available as linked data using domain-standard vocabularies including BIBO and Audiovisual Core. To increase the accuracy, size and scope of the repository, processes for entering metadata of identification resources should be streamlined. We discuss how publishers, authors, and libraries could be involved and persuaded to register their own published dichotomous or multi-access keys, species descriptions, field guides, and image- or audio-based identification applications, as inclusion makes their identification resources findable for a larger group of potential users.

Biodiversity Data Journal
Lines in the Landscape: @nature publication about the overlooked importance of ditches as ecosystems https://www.nature.com/articles/s43247-025-02699-y
With Judith van der Knaap, Quinten Struik and Sarian Kosten @RIBESresearch @Radboud_uni
#ditches #ecology #landscape #sustainability #research #nature
Lines in the landscape - Communications Earth & Environment

Ditches have many overlooked environmental and societal roles, including impact on biodiversity and pollution, and management strategies to enhance their multifunctional landscape-scale benefits are needed, according to a review of physical, biotic, chemical, and human factors.

Nature
I always enjoy the banner photos that @gbif puts on their front page but today's is especially good