Discover and read the best of Twitter Threads about #pnas

Most recents (5)

Le déclin des populations d'oiseaux européens serait lié aux pratiques agricoles, facteurs majeurs selon Rigal et al. (2023) dans un article parue dans #PNAS. Un coup de tonnerre en pleine polémique de #pause des normes environnementales 🇪🇺 #Macron #ornitho #biodiversité (1/n) Changement temporel de l'ab...
Ce papier relance une vieille polémique autour de la quantification des facteurs anthropiques responsables du déclin des oiseaux européens. En suivant 170 espèces différentes sur 20.000 sites européens (28 pays), les chercheurs se sont intéressés à 4 pressions différentes : (2/n)
1. L'intensification des pratiques agricoles
2. L'augmentation de la couverture forestière
3. L'urbanisation / artificialisation des milieux
4. Le réchauffement climatique

(3/n) Evolutions des quatre press...
Read 16 tweets
Changement climatique et insectes, quelles relations et enjeux pour la biodiversité comme pour les activités humaines ? Dans ce nouveau thread consacré au déclin des insectes, je vous propose d'étudier les liens entre climat et entomofaune 🐜🥵🌡️🌆⬇️ (1/n) Moustique au crépuscule - J...
Ce thread fait partie de la série de fils consacrés à l'impact de nos activités humaines sur les populations d'insectes. Vous pouvez retrouver l'ensemble des fils déjà publiés sur ce méta-thread 📚 (2/n)

Commençons par quelques précisions. Par changement climatique, il est bien question ici du réchauffement climatique anthropique actuellement constaté par la communauté scientifique. Nos émissions de GES en sont bien les responsables. #IPCC #GIEC #ClimateChange (3/n) Les activités humaines sont...Contributions au réchauffem...Les activités humaines sont...
Read 44 tweets
Now online and free of charge at #PNAS: results from a #worldwide #CitizenScience project on the #menstrual cycle "When fertile, women seek status via prestige but not dominance". (1/n) doi.org/10.1073/pnas.2…
Biological predictors of status are contested, partly because they have implications for sex differences & gender equality. Many investigations look at male status & testosterone (see work by Pranj Mehta, @nm_grebe, etc). Less is known about female status & other hormones (2/n)
My lab recruited women from 14 countries and 4 world regions to understand how the menstrual cycle and fertility affected status-seeking & self-esteem. Using an online daily diary in formR (created by @rubenarslan), participants tracked their menstrual cycle & psychology. (3/n)
Read 9 tweets
Our work on explaining how excitatory and inhibitory firing rates change after sensory deprivation is now published in #PNAS @PNASNews. One day post visual deprivation inhibitory firing rates in the visual cortex decrease, while excitatory rates stay the same. On the day two,
inhibitory rates recover, while excitatory rates decrease. Classical inhibition stabilized networks cannot capture this effect because of the paradoxical effect as shown by Tsodyks et al. We add a second class of inhibitory neurons in a cortical network model
and use a generalization of the paradoxical effect to explain the temporally offset changes in inhibitory and excitatory firing rates. The generalized paradoxical effect includes not just multiple inhibitory neuron types, but also plasticity along feedforward & recurrent pathways
Read 6 tweets
I saw the headlines (CNN et al) but ducked this yesterday. Increasingly that’s my posture on headline-grabbing preprints (or studious misreading of press statements, WHO) ... I wait for #scienceTwitter to provide missing peer review. Like this. #PNAS
Jeremy Faust makes excellent points about trust and credibility-and how crappy methodology weakens both.

Journals must do a better job of screening preprints, of marking them aggressively as NOT PEER REVIEWED.

News media need to stop chasing clicks by jumping on preprints
Second detailed critique of PNAS preprint
Read 5 tweets

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