Models of Biological Diversity
February 10, 2015 - 10:00am
Klaus 1116 East
Biology presents an astounding diversity of discrete states or species, that coexist over time-scales much longer than the underlying degrees of freedom. This general pattern calls for a understanding on diversity, and how competition can act as its ``engine". I explore sustainability of diversity, using model systems from biology. Taking the starting point in phage-bacteria ecosystems, I will describe how standard predator-prey equations can be used to quantify how phages may boost bacterial diversity. With inspiration from Lichen growing on rocks, I subsequently introduce a simple model for speciation through self organized spatial barriers. Overall my talk explore ways that existing may species support emerging species by repeated use of the competitors competitor.
J. O. Haerter et al.
Phage and bacteria support mutual diversity in a narrowing staircase of coexistence. The ISME Journal 0:doi:10.103 (2014)
N. Mitarai et al.
Emergence of diversity in a model ecosystem. Phys. Rev. E 86:011929 (2012)