| Report Year: 2009 |
| Cold Springs Lake, Cass 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 | 0.415 | 5.293 | 2.854 | 0.000 | 0.000 | 0.367 | 0.759 | 0.151 | 0.411 | 0.008 | 2.036 |
| Chlorophyta | 0.273 | 0.846 | 0.560 | 0.000 | 0.000 | 1.625 | 2.980 | 0.340 | 7.983 | 0.414 | 1.486 |
| Cryptophyta | 0.308 | 3.331 | 1.820 | 0.000 | 0.000 | 0.100 | 0.271 | 0.056 | 0.050 | 0.021 | 0.076 |
| Cyanobacteria | 88.063 | 23.821 | 55.942 | 0.000 | 0.000 | 59.898 | 15.135 | 74.324 | 320.765 | 162.380 | 48.604 |
| Dinophyta | 6.876 | 0.000 | 3.438 | 0.000 | 0.000 | 0.000 | 0.000 | 0.025 | 0.880 | 1.061 | 0.139 |
| Euglenophyta | 0.799 | 0.015 | 0.407 | 0.000 | 0.000 | 0.227 | 0.218 | 0.094 | 0.012 | 0.000 | 0.000 |
| Total | 96.734 | 33.307 | 65.021 | 0.000 | 0.000 | 62.218 | 19.363 | 74.990 | 330.102 | 163.884 | 52.341 |
| Taxonomic Richness | 26 | 30 | 28 | 0 | 0 | 15 | 10 | 17 | 9 | 3 | 6 |
| Cyanobacteria Cell Counts(k)/ml | 35.725 | 17.161 | 26.443 | 0.000 | 0.000 | 45.942 | 11.188 | 53.294 | 238.986 | 108.507 | 35.555 |
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