| Report Year: 2009 |
| Briggs Woods Lake, Hamilton 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 | 0.000 | 0.709 | 0.355 | 0.000 | 0.000 | 1.781 | 1.344 | 5.204 | 0.601 | 4.878 | 0.000 |
| Chlorophyta | 3575.848 | 0.000 | 1787.924 | 0.000 | 0.000 | 1.957 | 0.063 | 0.947 | 0.010 | 2.966 | 0.362 |
| Chrysophyta | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.041 | 0.000 | 0.000 | 0.000 | 0.000 |
| Cryptophyta | 0.150 | 0.247 | 0.199 | 0.000 | 0.000 | 0.962 | 3.264 | 3.664 | 0.016 | 3.714 | 1.888 |
| Cyanobacteria | 47.397 | 85.776 | 66.586 | 0.000 | 0.000 | 11.211 | 8.460 | 10.737 | 19.972 | 7.679 | 21.547 |
| Dinophyta | 0.000 | 13.937 | 6.968 | 0.000 | 0.000 | 9.470 | 0.419 | 0.774 | 4.562 | 1.262 | 0.711 |
| Euglenophyta | 0.238 | 0.043 | 0.141 | 0.000 | 0.000 | 0.186 | 0.045 | 0.008 | 0.000 | 0.000 | 0.008 |
| Total | 3623.634 | 100.712 | 1862.173 | 0.000 | 0.000 | 25.567 | 13.636 | 21.334 | 25.161 | 20.499 | 24.517 |
| Taxonomic Richness | 12 | 16 | 14 | 0 | 0 | 12 | 9 | 11 | 5 | 6 | 6 |
| Cyanobacteria Cell Counts(k)/ml | 255.890 | 453.685 | 354.787 | 0.000 | 0.000 | 13.673 | 53.833 | 38.593 | 16.023 | 43.003 | 61.578 |
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