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UID:20251007T100651EDT-7147OcZk9R@132.216.98.100
DTSTAMP:20251007T140651Z
DESCRIPTION:Ants play rock\, paper\, scissors: implications of intransitivi
 ties in competitive ant communities\n\nIvette Perfecto\, University of Mic
 higan\n	Tuesday March 11\, 12-1pm\n	Zoom Link: https://mcgill.zoom.us/j/8991
 4150820\n	In Person: 550 Sherbrooke\, Room 189\n	\n	Abstract: The question of
  species coexistence in ecological communities has intrigued ecologists si
 nce before the time of Darwin. Historically\, it has been assumed that eco
 logical communities dominated by competitive interactions exhibit transiti
 ve competition. This means there is a hierarchy of competitive strength ra
 nging from the most dominant to the most submissive species. However\, if 
 this assumption is taken to its extreme\, it logically leads to the conclu
 sion that the community would collapse\, resulting in the dominance of a s
 ingle species. Yet\, this is not what we observe in nature.\n\nIn this tal
 k\, I address this question by proposing that intransitive competition—sim
 ilar to the dynamics of the rock-paper-scissors game—plays a crucial role 
 in promoting coexistence among highly competitive ant communities. We will
  first present evidence for an intransitive loop involving three dominant 
 species found in coffee farms in Puerto Rico. Afterward\, we will analyze 
 two models that could enhance species richness: 1) the relationship betwee
 n an intransitive loop and a transitive hierarchy\, and 2) the link betwee
 n an intransitive loop and a predator-prey system with higher-order effect
 s. Finally\, we will discuss the implications of this intransitivity for p
 est control.\n
DTSTART:20240311T160000Z
DTEND:20240311T170000Z
SUMMARY:QLS Seminar Series - Ivette Perfecto
URL:/qls/channels/event/qls-seminar-series-ivette-perf
 ecto-361700
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