| Report Year: 2009 |
| Browns Lake, Woodbury County |
| Zooplankton |
| | 6/1/2009 | 7/6/2009 | 2009 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Suborder/Genus | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) | Dry Mass (μg/L) |
| Cladocera |
| Bosmina | 72.671 | 0.000 | 36.336 | 0.000 | 0.000 | 24.778 | 18.778 | 8.137 | 0.469 | 32.767 | 0.000 |
| Ceriodaphnia | 24.136 | 0.000 | 12.068 | 0.000 | 0.000 | 10.121 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Daphnia | 41.818 | 0.000 | 20.909 | 0.000 | 26.205 | 53.700 | 57.316 | 93.616 | 15.652 | 25.832 | 3.409 |
| Copepoda |
| Calanoida | 201.962 | 43.463 | 122.713 | 0.000 | 140.199 | 49.522 | 65.508 | 53.727 | 39.713 | 39.225 | 42.291 |
| Cyclopoida | 29.883 | 0.000 | 14.942 | 0.000 | 14.653 | 7.509 | 10.827 | 2.753 | 0.000 | 23.676 | 2.672 |
| Nauplii | 14.167 | 34.424 | 24.296 | 0.000 | 56.618 | 19.396 | 42.377 | 18.512 | 9.907 | 7.802 | 2.527 |
| Nauplii |
| Nauplii | 14.167 | 34.424 | 24.296 | 0.000 | 56.618 | 19.396 | 42.377 | 18.512 | 9.907 | 7.802 | 2.527 |
| Rotifera |
| Asplanchna | 0.000 | 0.000 | 0.000 | 0.000 | 18.727 | 4.399 | 10.776 | 3.958 | 3.477 | 0.000 | 0.000 |
| Brachionus | 0.000 | 35.053 | 17.527 | 0.000 | 0.115 | 1.756 | 4.559 | 4.365 | 3.991 | 0.421 | 0.171 |
| Conochilus | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.014 | 0.000 | 0.005 | 0.000 | 0.000 |
| Euchlanis | 2.613 | 0.000 | 1.307 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Filinia | 0.000 | 0.000 | 0.000 | 0.000 | 0.101 | 0.000 | 0.377 | 0.637 | 0.917 | 0.000 | 0.325 |
| Hexarthra | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.086 | 0.000 | 0.000 |
| Kellicottia | 0.000 | 0.031 | 0.015 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Keratella cochlearis | 1.376 | 0.228 | 0.802 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Keratella quadrata | 0.298 | 0.000 | 0.149 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Keratella | 0.000 | 0.000 | 0.000 | 0.000 | 1.769 | 1.501 | 1.748 | 0.258 | 1.095 | 0.164 | 0.000 |
| Polyarthra | 0.000 | 0.293 | 0.147 | 0.000 | 2.747 | 0.910 | 2.264 | 0.485 | 0.754 | 0.361 | 0.000 |
| Pompholx | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.012 | 0.236 | 0.000 | 0.000 | 0.000 | 0.000 |
| Total | 388.927 | 113.492 | 251.209 | 0.000 | 261.133 | 173.605 | 214.781 | 186.448 | 76.066 | 130.248 | 51.395 |
| Large Suspension Feeders (%) | 17 | 0 | 8 | - | 10 | 46 | 18 | 42 | 24 | 27 | 6 |
| Taxonomic Richness | 9 | 6 | 8 | - | 9 | 9 | 8 | 8 | 8 | 6 | 5 |
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