"Single Population Dynamics" & "When Do Optimisation Arguments Make Evolutionary Sense?"

CEES Extra seminars by Janusz Uchmański & Mats Gyllenberg

(Please note the adjusted times.)

11.15-12.00: Single Population Dynamics
Janusz Uchma
Centre for Ecological Research, Polish Academy of Sciences, Dziekanów Leśny, Poland

Abstract: Life exists in the form of individuals. Their life can be described by a simple energetic model. Individuals  assimilate energy, and then utilize it for growth and later for reproduction. But individuals live together and the amount of energy which is available to them is less then their total needs. How individuals divide resources between them. Equally? If not equally, then how? Have we any information on resource partitioning among competing  individuals of the same species and the same age and sex? Can we obtain such information directly from experiments  or indirectly? Is unequal resource partitioning reflected in individual differences in progeny production? If individual (of the same species, the same age and sex) are not equal, how their population dynamics looks like and is it different from population dynamics of equal individuals? Is individual variability always present in natural systems?

13.15-14.00: When Do Optimisation Arguments Make Evolutionary Sense
Mats Gyllenberg

University of Helsinki

Abstract: It is a widespread misconception that evolution by natural selection maximises some quantity like the lifetime reproductive success. In this talk I give necessary and sufficient conditions for the existence of an optimisation principle in terms of the well-known rock-scissors-paper game.

Published Feb. 6, 2012 3:42 PM - Last modified Feb. 6, 2012 3:42 PM