Roy van Grunsven

59 Followers
56 Following
254 Posts
Ecologist working in the Netherlands. . Interested in the monitoring and conservation of dragonflies, impact of artificial light on ecosystems and many other things.
Relax! Tel Flex! Ga je naar buiten, doe dan een flextelling. Kan altijd overal en waar en hoe lang je maar wilt. Veel extra info waarmee vlinders en libellen beter beschermd kunnen worden. Kijk het filmpje: https://youtu.be/pS4HpUt7u1o. En hier meer informatie: https://vlinderstichting.nl/wat-kan-jij-doen/tellen/flextellingen/
Relax - Tel Flex mp4

YouTube
In 2025 the number of transects where expert volunteers count butterflies in NL rose to almost 1600. On most of them (1257) all butterflies are counted, but some transects are for one species only or plots for egg-counts.
De masterclass van collega
@chrisvanswaay.bsky.social
is nu te bekijken op Youtube. Geeft informatie over de dagvlinders in het Atlantisch gebied. Is in het Engels, in het kader van EPICButterfly, een Europees project. https://www.youtube.com/watch?v=KuBSagkCWes
2 EPIC Masterclass - Advanced Level 3 // Atlantic butterflies

YouTube

Deutscher Nachhaltigkeitspreis für insektenfreundliche Straßenbeleuchtung @LeibnizIGB

https://idw-online.de/de/news862910

#Wissenschaft
#Nachhaltigkeit
#Lichtverschmutzung
#Insekten
#Artenvielfalt

Deutscher Nachhaltigkeitspreis für insektenfreundliche Straßenbeleuchtung

@kalisz79

https://x.com/RnaudBertrand/status/1991352574390227129

"In a normal world, this should be an immense scandal in Europe.

Le Monde has a long article (https://lemonde.fr/international/article/2025/11/19/nicolas-guillou-juge-francais-de-la-cpi-sanctionne-par-les-etats-unis-face-aux-attaques-les-magistrats-de-la-cour-tiendront_6654016_3210.html) describing the hellish life of Nicolas Guillou, a French judge at the ICC in The Hague, due to U.S. sanctions punishing him for authorizing arrest warrants against Netanyahu and Gallant for war crimes in Gaza.

Guillou's daily existence has been transformed into a Kafkaesque nightmare. He cannot: open or maintain accounts with Google, Amazon, Apple, or any US company; make hotel reservations (Expedia canceled his booking in France hours after he made it); conduct online commerce, since he can't know if the packaging is American; use any major credit card (Visa, Mastercard, Amex are all American); access normal banking services, even with non-American banks, as banks worldwide close sanctioned accounts; conduct virtually any financial transaction.

He describes it as being "economically banned across most of the planet," including in his own country, France, and where he works, the Netherlands.

That's the real shocking aspect of this: the Americans are:
- punishing a European citizen
- for doing his job in Europe
- applying laws Europe officially supports
- at an institution based in Europe
- that Europe helped create and fund

and Europe is not only doing essentially nothing to protect him, they're actively enforcing America's sanctions against their own citizen - European banks closing his accounts, European companies refusing him service, European institutions standing by while Washington destroys a European judge's life on European soil.

Again, in a normal world, European leaders and citizens should be absolutely outraged about this. But we've so normalized the hollowing out of European sovereignty that the sight of a European citizen being economically executed on European soil for upholding European law is treated, at best, as an unfortunate technical complication in transatlantic relations."

I'm offering a funded PhD position on nighttime lights #RemoteSensing in the Institute of #Geography at the @ruhr-uni-bochum.de https://jobs.ruhr-uni-bochum.de/jobposting/62065e5be70a916f65edd647cd1b1740b04cd72e0

I'd love for the ad to be seen by as many potential candidates as possible, so please share it with potential candidates both here and also via other networks.

#AcademicJobs #GeographyJobs #RemoteSensingJobs

PhD candidate (f/m/d) in Nighttime lights remote sensing

It looks like I will probably be able to offer a funded PhD position in #RemoteSensing using nighttime lights this fall. If you are interested yourself, or if you know someone who might be interested, please direct them to contact me.

#AcademicJobs

It is 2000. I'm 18 years old. They say my job won't survive quantum computing (IBM is really close).

It is 2005. I'm 23 years old. They say my job won't survive visual IDEs.

It is 2010. I'm 28 years old. They say my job won't survive smartphones.

It is 2015. I'm 33 years old. They say my job won't survive web3.

It is 2020. I'm 38 years old. They say my job won't survive AI.

It is 2025. I'm 43 years old. They say my job won't survive quantum computing.

Visualizing abstract numbers / actual human beings ...
https://visualizingpalestine.org/gaza-names/en.html
Remember their names

Naming the Palestinians who have been killed in Gaza

A new paper from the "Illuminating Lake Ecosystems" #ILES project (that I was involved in) shows that skyglow-like levels of #LightPollution are sufficient to change the structure of microbial communities in lakes: https://www.sciencedirect.com/science/article/pii/S0043135425002295

The "low" treatment was 0.06 lux, which is less than lakes typically get from moonlight. The "high" treatment was 6 lux, which would only be found inside of cities or near harbors with illumination.

#Ecology #Bacteria #Cyanobacteria