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X-WR-CALDESC:Events for Namur Institute For Complex Systems
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DTSTART;TZID=Europe/Brussels:20260416T130000
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SUMMARY:Thomas Koffel (Université Claude Bernard Lyon 1)
DESCRIPTION:Title: From Metacommunities to Masting: How Spatial Structure Privatizes Environmental Benefits \nAbstract:  \nIndirect positive interactions\, mediated by environmental modification\, are central to niche construction and cooperation. However\, eco-evolutionary theory predicts that when modified environments are fully public\, the ‘tragedy of the commons’ favors cheaters\, destabilizing such processes. This talk explores how spatial structure overcomes this barrier through two complementary lines of work. First\, using a minimal stochastic model\, we show how competition-colonization dynamics in a patch-structured metacommunity allow cooperators to coexist with or even exclude cheaters. Second\, we demonstrate how environmental privatization at the individual level enables niche construction\, specifically in the context of masting (intermittent\, synchronous fruiting by trees). By satiating and starving seed consumers—a ‘public bad’—masting evolves as a coordinated defense strategy that effectively privatizes the benefits of predator control. Together\, these results underline how the scale of environmental modification fundamentally dictates the scale at which selection acts in ecosystems. \nThis seminar will take place in Room S08 at the Faculty of Sciences.
URL:https://www.naxys.be/event/thomas-koffel-universite-claude-bernard-lyon-1/
CATEGORIES:NAXYS Seminar
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DTSTART;TZID=Europe/Brussels:20260424T090000
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SUMMARY:naXys Research Day
DESCRIPTION:naXys Research Day from 9 a.m. (Château de Namur).
URL:https://www.naxys.be/event/naxys-research-day-2/
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