| Report Year: 2009 |
| Clear Lake, Cerro Gordo County |
| Phytoplankton |
| | 6/25/2009 | 7/30/2009 | 2009 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Division | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) |
| Bacillariophyta | 1.368 | 7.108 | 4.238 | 2.655 | 8.593 | 7.415 | 1.651 | 8.249 | 6.022 | 1.275 | 0.649 |
| Chlorophyta | 1.090 | 0.280 | 0.685 | 0.890 | 1.987 | 3.084 | 1.215 | 0.308 | 2.074 | 1.621 | 10.165 |
| Chrysophyta | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.027 | 0.000 | 0.000 |
| Cryptophyta | 1.024 | 0.811 | 0.918 | 0.039 | 0.163 | 0.199 | 0.020 | 0.030 | 0.057 | 0.015 | 0.161 |
| Cyanobacteria | 226.455 | 124.637 | 175.546 | 37.111 | 3101.501 | 293.905 | 540.596 | 58.001 | 133.916 | 11.441 | 25.933 |
| Dinophyta | 0.000 | 3.038 | 1.519 | 0.000 | 0.455 | 0.575 | 0.124 | 0.000 | 0.504 | 0.195 | 0.146 |
| Euglenophyta | 0.048 | 2.426 | 1.237 | 0.178 | 0.000 | 0.095 | 0.008 | 0.015 | 0.021 | 0.000 | 0.000 |
| Total | 229.986 | 138.299 | 184.142 | 40.873 | 3112.699 | 305.274 | 543.614 | 66.603 | 142.621 | 14.546 | 37.054 |
| Taxonomic Richness | 30 | 28 | 29 | 9 | 12 | 18 | 12 | 10 | 13 | 9 | 12 |
| Cyanobacteria Cell Counts(k)/ml | 157.758 | 101.908 | 129.833 | 0.000 | 2245.583 | 245.779 | 413.586 | 45.951 | 101.016 | 38.050 | 8.864 |
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