| Report Year: 2009 |
| Pierce Creek Lake, Page County |
| Phytoplankton |
| | 6/9/2009 | 7/14/2009 | 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 | 0.571 | 6.300 | 3.435 | 0.000 | 0.000 | 9.723 | 2.676 | 2.330 | 0.428 | 1.854 | 1.405 |
| Chlorophyta | 0.258 | 6.867 | 3.562 | 0.000 | 0.000 | 3.430 | 0.369 | 2.837 | 1.958 | 5.278 | 12.755 |
| Cryptophyta | 0.045 | 0.383 | 0.214 | 0.000 | 0.000 | 0.893 | 0.148 | 0.268 | 0.052 | 0.000 | 0.300 |
| Cyanobacteria | 65.732 | 102.005 | 83.869 | 0.000 | 0.000 | 32.261 | 204.502 | 309.612 | 181.945 | 12.844 | 6.947 |
| Dinophyta | 5.054 | 0.000 | 2.527 | 0.000 | 0.000 | 0.127 | 0.000 | 0.000 | 0.073 | 0.822 | 2.876 |
| Euglenophyta | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.042 | 0.489 | 0.146 | 0.043 | 0.000 | 0.000 |
| Total | 71.660 | 115.555 | 93.607 | 0.000 | 0.000 | 46.476 | 208.185 | 315.192 | 184.500 | 20.799 | 24.283 |
| Taxonomic Richness | 24 | 38 | 31 | 0 | 0 | 10 | 8 | 9 | 9 | 5 | 6 |
| Cyanobacteria Cell Counts(k)/ml | 48.485 | 155.060 | 101.773 | 0.000 | 0.000 | 25.982 | 165.440 | 225.460 | 142.036 | 71.390 | 38.535 |
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