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X-WR-CALNAME:Parsons Environmental Science Seminar
X-WR-TIMEZONE:Eastern Time (US & Canada)
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DTSTAMP:20260711T174615Z
UID:tag:localist.com\,2008:EventInstance_4048545
DTSTART:20181102T160000Z
DTEND:20181102T170000Z
DESCRIPTION:Prof. Mikhail Tikhonov\n\nPhysics Department\n\nWashington Univ
 ersity in St Louis\n\n \n\nPerformance tradeoffs and eco-evolutionary inte
 rplay at high diversity\n\nMuch of our understanding of ecological and evo
 lutionary mechanisms derives from analysis of low-dimensional models: with
  few interacting species\, or few axes defining fitness. It is not always 
 clear to what extent such low-dimensional intuition applies to the complex
 \, high-dimensional reality. This becomes especially relevant in the micro
 bial context\, because most naturally occurring communities harbor a strik
 ingly large number of coexisting species. In the first part of the talk\, 
 I will describe how extending Tilman's geometric intuition into high dimen
 sions offers insights into eco-evolutionary interplay in high-diversity ec
 osystems\, revealing the existence of multiple qualitatively distinct dyna
 mical regimes. Which of these regimes is realized is determined by the str
 ucture of performance tradeoffs constraining the system. Importantly\, suc
 h tradeoffs\, which most models simply postulate as part of a "fitness lan
 dscape"\, are known to themselves evolve. In the second part of the talk\,
  I will briefly describe how an ecologically-inspired model provides a pro
 mising theoretical context for patching this gap in evolutionary theory.
LOCATION:Parsons Laboratory
SUMMARY:Parsons Environmental Science Seminar
URL;VALUE=URI:https://calendar.mit.edu/event/Mulcahy
CATEGORIES:Conferences/Seminars/Lectures
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