My recent publications

Dear Foodwebbers,

Here are the URLs of my two most recent papers on evolution of food-web
structure for an individual-based evolutionary predator-prey model:

P.A. Rikvold and V. Sevim, 
``Individual-based Predator-prey Model for Biological Coevolution:
Fluctuations, Stability, and Community Structure."
Phys. Rev. E 75, 051920 (2007) (17 pages).
http://link.aps.org/abstract/PRE/v75/e051920
Free preprint: http://arXiv.org/abs/q-bio.PE/0611023

P.A. Rikvold,
``Self-optimization, Community Stability, and Fluctuations
in Two Individual-based Models of Biological Coevolution."
J. Math. Biol., published online:  
http://dx.doi.org/10.1007/s00285-007-0101-y
Free preprint: http://arXiv.org/abs/q-bio.PE/0508025
(The preprint version contains a discussion of the difference between 
the effects of an external resource and a carrying capacity, which the
editor of JMB insisted I must remove from the published version. 
Especially for people with a physics background, the difference should
be quite clear: the external resource has an effect similar to the
magnetic field in an Ising model, while the carrying capacity is the
inverse of the term in the Ginzburg-Landau Hamiltonian that keeps the
order parameter from diverging to infinity in the ordered phase.)

Some earlier papers on the same evolution models, but with less emphasis
on the food-web structure and more on the long-time dynamics, are: