| Report Year: 2009 |
| Lacey Keosauqua Park Lake, Van Buren County |
| Phytoplankton |
| | 6/16/2009 | 7/21/2009 | 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 | 0.732 | 0.560 | 0.646 | 9.002 | 0.233 | 0.704 | 0.097 | 0.125 | 0.000 | 0.401 | 2.102 |
| Chlorophyta | 0.055 | 0.000 | 0.028 | 0.035 | 0.004 | 0.512 | 0.195 | 0.201 | 0.000 | 0.138 | 0.033 |
| Chrysophyta | 0.020 | 0.000 | 0.010 | 0.000 | 0.000 | 0.239 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Cryptophyta | 1.742 | 0.224 | 0.983 | 0.054 | 0.051 | 0.281 | 0.084 | 0.039 | 0.000 | 0.052 | 0.195 |
| Cyanobacteria | 81.741 | 20.726 | 51.233 | 11.028 | 20.106 | 9.574 | 13.222 | 25.643 | 0.000 | 0.081 | 1.107 |
| Dinophyta | 0.000 | 4.277 | 2.139 | 0.394 | 0.409 | 1.197 | 0.827 | 0.000 | 0.000 | 0.020 | 1.496 |
| Euglenophyta | 0.000 | 0.030 | 0.015 | 0.000 | 0.014 | 0.323 | 0.037 | 0.000 | 0.000 | 0.000 | 0.000 |
| Total | 84.291 | 25.817 | 55.054 | 20.513 | 20.817 | 12.829 | 14.462 | 26.007 | 0.000 | 0.691 | 4.934 |
| Taxonomic Richness | 18 | 18 | 18 | 7 | 7 | 18 | 16 | 9 | 0 | 8 | 8 |
| Cyanobacteria Cell Counts(k)/ml | 143.100 | 39.217 | 91.159 | 0.000 | 19.850 | 45.038 | 12.229 | 26.747 | 0.000 | 0.353 | 5.931 |
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