| Report Year: 2009 |
| Green Belt Lake, Black Hawk County |
| Phytoplankton |
| | 6/24/2009 | 7/29/2009 | 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 | 0.286 | 0.698 | 0.492 | 2.793 | 0.126 | 0.488 | 0.116 | 0.264 | 1.775 | 0.107 | 0.000 |
| Chlorophyta | 0.835 | 0.773 | 0.804 | 0.068 | 0.500 | 0.020 | 0.036 | 0.012 | 0.018 | 0.008 | 0.046 |
| Chrysophyta | 0.000 | 4.573 | 2.286 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Cryptophyta | 0.087 | 0.008 | 0.048 | 0.028 | 0.022 | 0.389 | 0.129 | 0.040 | 0.237 | 0.093 | 0.000 |
| Cyanobacteria | 11.926 | 7.603 | 9.765 | 26.445 | 7.018 | 21.514 | 45.058 | 8.649 | 27.183 | 20.182 | 31.981 |
| Dinophyta | 11.765 | 0.000 | 5.882 | 0.182 | 0.018 | 0.212 | 0.000 | 0.017 | 0.000 | 0.121 | 0.000 |
| Euglenophyta | 0.104 | 0.101 | 0.102 | 0.043 | 0.012 | 0.126 | 0.038 | 0.255 | 0.000 | 0.000 | 0.069 |
| Total | 25.003 | 13.756 | 19.380 | 29.559 | 7.695 | 22.750 | 45.378 | 9.237 | 29.213 | 20.510 | 32.096 |
| Taxonomic Richness | 26 | 24 | 25 | 7 | 7 | 8 | 5 | 7 | 4 | 6 | 2 |
| Cyanobacteria Cell Counts(k)/ml | 8.910 | 5.747 | 7.329 | 0.000 | 30.691 | 114.760 | 194.584 | 43.561 | 151.613 | 103.970 | 165.656 |
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