Abstract
It is proved that the periodically forced Droop model for phytoplankton growth in a chemostat has precisely two dynamic regimes depending on a threshold condition involving the dilution rate. If the dilution rate is such that the sub-threshold condition holds, the phytoplankton population is washed out of the chemostat. If the super-threshold condition holds, then there is a unique periodic solution, having the same period as the forcing, characterized by the presence of the phytoplankton population, to which all solutions approach asymptotically. Furthermore, this result holds for a general class of models with monotone growth rate and monotone uptake rate, the latter possibly depending on the cell quota.
Original language | English (US) |
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Pages (from-to) | 545-556 |
Number of pages | 12 |
Journal | Journal Of Mathematical Biology |
Volume | 35 |
Issue number | 5 |
DOIs | |
State | Published - May 1997 |
Keywords
- Chemostat
- Droop model
- Global stability
- Phytoplankton
ASJC Scopus subject areas
- Modeling and Simulation
- Agricultural and Biological Sciences (miscellaneous)
- Applied Mathematics