| Biotic Setting | Planktonic Biota |
| Biotic Class | Phytoplankton |
| Biotic Subclass | Chlorophyte Phytoplankton |
| Biotic Group | Chlorophyte Aggregation |
| Biotic Community | Chlorella Aggregation |
| Definition | Waters dominated by Chlorophytes. This group is known to aggregate at frontal zones and under ice pack. |