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TZID:Europe/Paris
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BEGIN:VEVENT
UID:0-963@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20250211T110000
DTEND;TZID=Europe/Paris:20250211T120000
DTSTAMP:20250204T081422Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-daniel-amor-ens/
SUMMARY:Séminaire du LPTMS : Daniel Amor (ENS Paris) - Salle des séminair
 es du FAST et du LPTMS\, bâtiment Pascal n°530 - 11 Fév 25 11:00
DESCRIPTION:Community transitions and the emergence of alternative stable s
 tates in microbial systems\nDaniel Amor (ENS Paris)\n&nbsp\;\n\nMicrobial 
 communities often face external perturbations that can induce lasting chan
 ges in their composition and functions. Responses to such perturbations ca
 n drive community functions\, including host health\, which urges for pred
 ictive understanding of community dynamics following perturbations. First 
 in this talk\, I will present our work addressing how perturbations can in
 duce transitions between alternative stable states of a simple experimenta
 l community. For the case of antibiotic perturbations\, I will address how
  bacterial growth dynamics can overcome differences in antibiotic suscepti
 bility and determine the community outcome of antibiotic exposure. Combini
 ng theory and experiments\, we demonstrated that differences in the growth
  rates of community members can determine the resilience of stable communi
 ty states against several antibiotics\, a result that holds with relative 
 independence of differences in antibiotic susceptibility. As our understan
 ding of response to perturbations in simple communities was growing\, we f
 aced a classical question in ecology: how does community complexity impact
  stability and dynamics? We addressed this question by assembling experime
 ntal communities under a large range of species pools\, controlling both i
 dentity and number of community members\, and a range of environments\, co
 ntrolling the average interaction strength between community members. Thes
 e experiments constitute the first empirical demonstration of complexity-d
 riven transitions between three generic phases of community dynamics predi
 cted by ecological theory.
CATEGORIES:seminars
LOCATION:Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°53
 0\, rue André Riviere\, Orsay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Riviere\, Orsay\
 , 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Salle des séminaires du FAST 
 et du LPTMS\, bâtiment Pascal n°530:geo:0,0
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