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BEGIN:VEVENT
DTSTAMP:20260828T010505Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20101004T170000Z
DTEND:20101004T180000Z
UID:event709@bu.edu
URL:http://physics.bu.edu/internal/events/show/709
SUMMARY:Diversifying dynamics and their universality: Eco-evolution and Eco
	no-evolution
DESCRIPTION:Featuring Prof. Nobuyasu Ito\, University of Tokyo\nHosted by: 
	H. Eugene Stanley\n\nPart of the Biophysics/Condensed Matter Seminar Series
	.\n\nAbstract:\nEcological systems are dynamically organized and maintained
	 in a slow\, evolutional\, time scale.  It is therefore challenging to clar
	ify the essence why ecoevolution could achieve such complex self-organizati
	on. The answer will be simple and universal\, because there are a wide vari
	ety of ecosystems on the earth.  Such variety will not be realized without 
	some simple universal mechanism.\n\nWe compare models of ecoevolution dynam
	ics are compared to reach the universal1 feature2\, and we find that a skew
	 profile in life-time distribution function of species is the best model.  
	After a study of the simplest model\, we develop a "Red-Queen Hypothesis". 
	 The skew profile turns out to be due to a stretched exponential function w
	ith exponent 1/23. Such stretched exponential profile explains fossil data\
	, and also economical data4.\n\n1 Y. Murase\, T. Shimada\, N. Ito and P. A.
	 Rikvold\, J. Theor. Biol. vol. 264\, 663 (2010).\n\n2 Y. Murase\, T. Shima
	da\, N. Ito and P. A. Rikvold\, Phys. Rev. E vol.81\, 041908 (2010).\n\n3 Y
	. Murase\, T. Shimada and N. Ito\, New Journal of Physics vol.12 063021 (20
	10).\n\n4 T. Mizuno and M. Takayasu\, Prog. Theor. Phys. Suppl. vol.179 71(
	2009).
LOCATION:SCI 352\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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