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SUMMARY:Does phase separation explain spatial patterns in ecosystems? - Jo
 han van de Koppel (NIOZ Royal Netherlands Institute for Sea Research)
DTSTART:20240614T144000Z
DTEND:20240614T153000Z
UID:TALK214807@talks.cam.ac.uk
DESCRIPTION:Johan van de Koppel & Quan-Xing Liu\nSpatial patterns are ubiq
 uitous in many pristine ecosystems\, playing an important role in defining
  the adaptive capacity of ecosystems to changing environmental conditions.
  The predominant explanation for pattern formation in ecosystems is Alan T
 uring&rsquo\;s activator-inhibitor system\, where local positive feedback 
 improves growth\, while long-range negative feedback inhibits growth. Here
 \, I argue that phase separation could provide an alternative class of mec
 hanism for self-organized pattern formation in ecosystems\, that builds on
  the aggregation of a biotic or abiotic species\, sediment\, or nutrients\
 , and even herbivores. Using a generalized mathematical model\, we demonst
 rate that ecosystems with aggregation-driven patterns have fundamentally d
 ifferent patterns\, dynamics and resilience properties than ecosystems wit
 h patterns that formed through scale-dependent feedbacks.&nbsp\;\nReferenc
 es:\nLiu\, Q.X.\, Doelman\, A.\, Rottsch&auml\;fer\, V.\, de Jager\, M.\, 
 Herman\, P.M.\, Rietkerk\, M. and van de Koppel\, J.\, 2013. Phase separat
 ion explains a new class of self-organized spatial patterns in ecological 
 systems. Proceedings of the National Academy of Sciences\, 110(29)\, pp.11
 905-11910.\nLiu\, Q.X.\, Rietkerk\, M.\, Herman\, P.M.\, Piersma\, T.\, Fr
 yxell\, J.M. and van de Koppel\, J.\, 2016. Phase separation driven by den
 sity-dependent movement: a novel mechanism for ecological patterns.&nbsp\;
 Physics of life reviews\,&nbsp\;19\, pp.107-121.\nSiteur\, K.\, Liu\, Q.X.
 \, Rottsch&auml\;fer\, V.\, van der Heide\, T.\, Rietkerk\, M.\, Doelman\,
  A.\, Bostr&ouml\;m\, C. and van de Koppel\, J.\, 2023. Phase-separation p
 hysics underlies new theory for the resilience of patchy ecosystems.&nbsp\
 ;Proceedings of the National Academy of Sciences\,&nbsp\;120(2)\, p.e22026
 83120.
LOCATION:Seminar Room 1\, Newton Institute
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