We show that the coexistence of different species in competition for a common resource may be substantially long when their growth functions are arbitrarily closed. The transient behavior is analyzed in terms of slow-fast dynamics. We prove that non-dominant species can first increase before decreasing, depending on their initial proportions.
Rapaport, A., Dochain, D., & Harmand, J. (2008). Practical coexistence in the chemostat with arbitrarily close growth functions. Revue Arima (Numéro spécial Claude Lobry), 9, 231-243. https://hdl.handle.net/2078.5/79982 (Original work published 2008)