Title: Exploring the role of nitrogen substrate availability in the ecology of Microcystis-dominated CyanoHABs  “Nitrogen availability” refers to the amounts of biologically usable nitrogen forms relative to demand by the biological community. In cyanobacterial harmful algal blooms (CyanoHABs) dominated by the non-diazotrophic cyanobacteria Microcystis aeruginosa, nitrogen availability is critical for the production of the nitrogen-rich […]