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X-WR-CALDESC:Events for Namur Institute For Complex Systems
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DTSTART;TZID=Europe/Paris:20190404T130000
DTEND;TZID=Europe/Paris:20190404T140000
DTSTAMP:20260424T125049
CREATED:20181205T224534Z
LAST-MODIFIED:20190401T131104Z
UID:520-1554382800-1554386400@www.naxys.be
SUMMARY:Gyuri Barabas (University of Linköping\, Sweden)
DESCRIPTION:Title: The evolution of trait variance creates a tension between species and functional diversity\n\nAbstract: It seems intuitively obvious that species diversity begets functional (trait) diversity: the more plant species there are\, the more varied their leaf chemistry will be; more species of crops provide more kinds of food; etc. In this talk I argue that the evolution of trait variance challenges this view. In a trait-based eco-evolutionary model\, I show that when species richness is low\, individual species evolve large trait variation\, while in species-rich communities species avoid competition by evolving narrow trait breadths. This effect can be so strong that those communities with more but narrower species will cover a smaller fraction of the available trait space than those with fewer but intraspecifically more variable ones. The expected positive relationship between species and functional diversity is thus overhauled\, a result which proved extremely robust to changes in model setup and parameterization. I finish by presenting and discussing empirical data consistent with this claim.
URL:https://www.naxys.be/event/gyuri-barabas/
LOCATION:E25
CATEGORIES:NAXYS Seminar
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