Transient Dynamics of a Stoichiometric Cyanobacteria Model via Multiple-Scale Analysis.

Cyanobacterial (CB) blooms are becoming a global concern due to the increasing prevalence of eutrophication. The dependence of CB dynamics on phosphorus and light inputs is modeled via a stoichiometric approach. The dynamics occur in distinct phases that allow us to make use of multiple timescale analysis to uncover the driving mechanisms of each phase. As a result, we are able to approximate the length of time a bloom persists. This framework helps to establish the use of multiscale methods in stoichiometric models and provides deeper understanding of CB dynamics.