Frédéric Rimet
@rimetfrederic.mastodon.social.ap.brid.gy
38 followers 4 following 89 posts
Concerned about environmental issues and the place of people with disabilities in our society. Active member in associations of parents of childs with […] [bridged from https://mastodon.social/@rimetfrederic on the fediverse by https://fed.brid.gy/ ]
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rimetfrederic.mastodon.social.ap.brid.gy
A new paper by Laurine Viollaz, a engineer working with me in the framework of #metabarcoding #phytoplankton #lake #france

Viollaz, L., Rimet, F., & Alric, B. (2025). Environmental DNA Approach for Lake Phytoplankton Monitoring. ACS ES&T Water. https://doi.org/10.1021/acsestwater.5c00669
The European Water Framework Directive (WFD) requires monitoring to achieve or maintain good ecological status of lakes, which support major socio-economic services. Traditionally, a morphology-based identification of individuals is used for the biomonitoring. Environmental DNA (eDNA) has significantly enhanced the evaluation of biodiversity in aquatic ecosystems. In addition, the eDNA metabarcoding approach without taxonomic-assignment (the so-called taxonomy-free approach) seems to be more promising for biomonitoring than the taxonomy-based approach. For the moment, there is a lack of empirical evidence showing the relevance of the taxonomy-free approach for assessing the ecological status of lakes based on phytoplankton, a key biological group used under the WFD. In this study, we coupled an eDNA metabarcoding approach with a niche model and an unsupervised machine learning method to assess the ecological status of 239 samples collected in 98 lakes across France. In practice, we have developed a biotic index using the abundance profiles of Amplicon Sequence Variants (ASVs) along a specific environmental gradient to assess the latter. We showed that this index, based on the taxonomy-free approach, had a strong ability to predict the ecological status of samples along an anthropogenic gradient, representing eutrophication levels.
rimetfrederic.mastodon.social.ap.brid.gy
Happy to shore our new paper
Vlaovic, L., Lemonnier, C., Alric, B., Rimet, F., Ciric, M., Miletic, S., Milovanović, Ž., Petrović, V., & Vidakovic, D. (2025). #diatom #metabarcoding vs. Morphology in #monitoring #freshwater and saline #lakes in #serbia. Frontiers in Ecology and Evolution, 13 […]
Original post on mastodon.social
mastodon.social
rimetfrederic.mastodon.social.ap.brid.gy
Final meeting of #biolaweb project #belgrade #serbia #metabarcoding #edna #diatom #science #nature #environment #omics #phytoplankton #macrophytes always happy to be hosted by our Serbian colleagues. Nice atmosphere and great work
Photo de rimetfrederic
Reposted by Frédéric Rimet
ricardoparreira.com
@mariechureau.bsky.social a tout mon soutien !!!

Certains gauchistes apprécient agresser des femmes aux voix dissonantes.

Ça ne va pas, ou quoi @humanite.fr, Paul Watson ???
Reposted by Frédéric Rimet
politipet.bsky.social
Salut @arnaultraphael.bsky.social ! Tu ferais une chose simple : un click "suivre" sur @ap.brid.gy ?

Ce click permet aux gens de Mastodon de te lire, suivre, like, repost, répondre, directement depuis leur réseau.
Reposted by Frédéric Rimet
sandrousseau.bsky.social
Il nous faut une prospérité sans croissance. Une prospérité fondée sur la qualité de vie et non sur la consommation.
Tel est le projet d’émancipation que doit porter l’écologie de gauche.
@bfmtv.com
Reposted by Frédéric Rimet
Reposted by Frédéric Rimet
jessholz.bsky.social
A rare green fluorescent flagellate, ‘swimming plant’, trails in timelapse under fluorescence microscopy. Anyone know what causes green fluorescence in marine critters? 99.9% of flagellates I find are red from chlorophyll. Sample collected from Boston harbor. #sciart #algae #plankton
Reposted by Frédéric Rimet
jessholz.bsky.social
Plankton Performance, this Friday 7pm at MIT museum. I will be collaborating with plankton from the Charles river under my leicamicrosystems.bsky.social microscope, while Senem Pirler responds to their movements and behavior with sound. mitmuseum.mit.edu/programs/pla... #sciart
Reposted by Frédéric Rimet
jessholz.bsky.social
Last call for tickets for this unique concert! This is a big one for me so Boston folk, I’d love it if you could join. Video shows the trails of diatoms in timelapse. mitmuseum.mit.edu/programs/pla... #sciart
Reposted by Frédéric Rimet
rimetfrederic.mastodon.social.ap.brid.gy
Je recommande :
@batolabo
Pour suivre la belle aventure de BatoLabo : une navigation fluviale art-science, de la Loire au Danube, qui accompagne une initiative citoyenne européenne pour les droits des rivières (sept. 2025 – 2026).

Ce grand voyage en bateau […]

[Original post on mastodon.social]
rimetfrederic.mastodon.social.ap.brid.gy
Happy to share a new paper:
Phototrophic periphyton tolerance reflects in situ exposure to pharmaceuticals overtime – A translocation study using a pollution-induced community approach (PICT)
In Journal of Hazardous Materials […]

[Original post on mastodon.social]
rimetfrederic.mastodon.social.ap.brid.gy
Happy to present my new paper:
Stochasticity Shapes Microbial Communities in High-Altitude Lakes, Whereas Species Selection and Homogenization Dispersal Are More Important in Lowland Lakes: Case of Benthic Diatoms in Alpine Lakes […]

[Original post on mastodon.social]
Ecological network showing that lowland lakes diatom species are much more co-occurent than in high altitude lakes (a) Contribution of the ecological processes structuring diatom communities in high-altitude and lowland lakes using Stegen et al. (2013) methodology. (b) Contribution of environmental (water chemistry, hydro-morphometry) and dispersal filters (spatial distance) to explain communities variability using variance partitioning (unexplained variance: 92% for high-altitude lakes and 50% for lowland lakes).
rimetfrederic.mastodon.social.ap.brid.gy
Des myosotis dans un sous bois proche de Marignier #hautesavoie #botany #alps
Reposted by Frédéric Rimet
solenedem.piaille.fr.ap.brid.gy
#gaza

Une vidéo que #MedecinsSansFrontieres a publié, il y 48h, sur Instagram.

On y voit de nouveau le Dr Moughaisib, Coordinateur Médical pour #MSF à #Gaza.
Il raconte l'urgence absolue de la situation à Gaza et demande un cessez-le-feu immediat. Cette fois-ci […]

[Original post on piaille.fr]
Reposted by Frédéric Rimet
secretgeek.mastodon.cloud.ap.brid.gy
Walking through a second hand book store should feel like you’re flying through the trench run on the Death Star.
A book store with full shelves and stacked high right down to the floor on both sides of the aisle
rimetfrederic.mastodon.social.ap.brid.gy
J'ai l'impression de prendre un coup de vieux quand je lis certaines infos...
Afp tv5 monde
🤖 Des centaines d'androïdes ont enchaîné chutes saccadées et montées en puissance lors de la toute première compétition mondiale de robots humanoïdes qui a commencé […]

[Original post on mastodon.social]
Reposted by Frédéric Rimet
cassouman40.bsky.social
Le Sud de la France subit une #canicule record par sa sévérité(combinaison intensité+durée) & brutalité.
✔quels processus à son origine?
✔pourquoi cet été restera l’un des +frais de ce siècle si on n’accélère pas la décarbonation restant dans l'illusion d'une adaptation sans casse?
#fatigue
Un fil🧵👇
Reposted by Frédéric Rimet
bouletcorp2.mastodon.social.ap.brid.gy
Rogatons Rediffusion - 10/03/2020 - "Microtroubles"
Source: https://www.bouletcorp.com/notes/2020/03/10

Une rediffusion un peu particulière: la note est effectivement passée dans les Rogatons, mais à l'origine elle était sur le blog, en couleurs.

Je vous la mets en 3 parties !
1/3
Un panneau annonçant: "Mes micro-troubles psychologiques." FRÉNÉSIE MÉNAGÈRE DÉFLECTIVE

Quand on évite le travail important en se lançant dans de nombreuses tâches ménagères secondaires.

(On voit Boulet ranger des cartons, en sueur)
Boulet: "Oh, ce placard ! Je ne l'avais pas rangé en 10 ans ! J'ai dix pages à faire, mais ceci ne peut plus attendre !" ULTRAVIGILANCE HYPNAGOGIQUE

Le fait de systématiquement se réveiller spontanément quelques minutes avant son alarme pour ne pas l'entendre sonner.

(Boulet se réveille en panique dans son lit à 6:58) APNÉE SYMPATHIQUE
Le fait de retenir sa respiration devant son écran quand le personnage d'un film est sous l'eau.

(On voit Boulet, écarlate, les joues gonflées douloureusement, assis les bras croisés devant son écran)
Reposted by Frédéric Rimet
rimetfrederic.mastodon.social.ap.brid.gy
We have a post-doc position for 15 months in the framework of the https://dnaquaimg.eu/ project (11 countries) at UMR Carrtel https://carrtel.lyon-grenoble.hub.inrae.fr/unit (Lake Geneva, France).
If you have good skills in molecular biology, aquatic ecology […]

[Original post on mastodon.social]
rimetfrederic.mastodon.social.ap.brid.gy
Aquatic #edna presents gaps in data standards & connectivity.

A FAIR, federated digital ecosystem with interoperable metadata is key to unlocking its full potential across Europe. 🌍🧬

🧾 Read the proposal draft by the #ednaquaplan team: tinyurl.com/3mdnjzxd

#science
Reposted by Frédéric Rimet
rimetfrederic.mastodon.social.ap.brid.gy
Please find our new paper in Molecular Ecology:
Omics to Study and Manage Aquatic Environments: A Snapshot From the AquaEcOmics Meeting (Evian-les-Bains, 2025). https://onlinelibrary.wiley.com/doi/10.1111/mec.70041

A good summary of the […]

[Original post on mastodon.social]
Sankey diagram giving the proportions of contributions (oral and poster communications) given at the AquaEcOmics meeting in Evian from March 2025, depending on the study scope and the input category. The above diagram is given for microorganisms (74 contributions) and the diagram below for macroorganisms (64 contributions). Themes contributions given at the AquaEcOmics meeting in Evian from March 2025. The three major themes gather topics in coloured circles and are synthetised in Section 3 (Fundamental science discoveries in aquatic ecology and biology), Section 4 (Stakeholder-driven research) and Section 5 (Methodological gaps and possible solutions).