Competitive exclusion for chemostat equations with variable yields
Dynamical Systems
2011-07-29 v2
Abstract
In this paper, we study the global dynamics of a chemostat model with a single nutrient and several competing species. Growth rates are not required to be proportional to food uptakes. The model was studied by Fiedler and Hsu [J. Math. Biol. (2009) 59:233-253]. These authors prove the nonexistence of periodic orbits, by means of a multi-dimensional Bendixon-Dulac criterion. Our approach is based on the construction of Lyapunov functions. The Lyapunov functions extend those used by Hsu [SIAM J. Appl. Math. (1978) 34:760-763] and by Wolkowicz and Lu [SIAM J. Appl. Math. (1997) 57:1019-1043] in the case when growth rates are proportional to food uptakes.
Cite
@article{arxiv.1005.3611,
title = {Competitive exclusion for chemostat equations with variable yields},
author = {Tewfik Sari},
journal= {arXiv preprint arXiv:1005.3611},
year = {2011}
}