| Report Year: 2009 |
| Green Castle Lake, Marshall County |
| Phytoplankton |
| | 6/15/2009 | 7/20/2009 | 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 | 1.952 | 4.374 | 3.163 | 0.060 | 0.017 | 0.357 | 0.023 | 0.021 | 0.071 | 0.045 | 3.031 |
| Chlorophyta | 0.192 | 4.848 | 2.520 | 0.225 | 0.166 | 0.091 | 0.024 | 0.010 | 0.000 | 0.089 | 0.123 |
| Chrysophyta | 0.000 | 0.292 | 0.146 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Cryptophyta | 0.224 | 0.000 | 0.112 | 0.631 | 0.039 | 4.821 | 0.261 | 0.187 | 0.078 | 3.434 | 0.087 |
| Cyanobacteria | 42.370 | 61.675 | 52.022 | 34.879 | 2.939 | 21.891 | 0.913 | 3.337 | 4.494 | 2.027 | 8.357 |
| Dinophyta | 0.000 | 0.000 | 0.000 | 0.000 | 0.031 | 0.257 | 0.053 | 0.152 | 0.033 | 0.227 | 1.353 |
| Euglenophyta | 0.086 | 0.000 | 0.043 | 0.063 | 0.002 | 0.066 | 0.008 | 0.005 | 0.037 | 0.000 | 0.026 |
| Total | 44.823 | 71.188 | 58.006 | 35.858 | 3.195 | 27.482 | 1.283 | 3.711 | 4.715 | 5.822 | 12.978 |
| Taxonomic Richness | 22 | 30 | 26 | 7 | 9 | 13 | 9 | 6 | 7 | 4 | 8 |
| Cyanobacteria Cell Counts(k)/ml | 30.815 | 47.227 | 39.021 | 0.000 | 2.200 | 17.321 | 0.743 | 3.044 | 3.241 | 1.749 | 14.391 |
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