Phylum: Hjuldyr (Rotifera)
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2024 | 1 | 1 | 1 | 4 |
| 2023 | 1 | 1 | 1 | 5 |
| 2022 | 1 | 1 | 1 | 1 |
| 2021 | 2 | 1 | 1 | 2 |
| 2019 | 1 | 1 | 1 | 1 |
| 2018 | 4 | 2 | 1 | 5 |
| 2016 | 1 | 1 | 1 | 1 |
| 2015 | 2 | 2 | 2 | 3 |
| 2014 | 1 | 2 | 2 | 2 |
| 2013 | 1 | 18 | 17 | 19 |
| 2012 | 1 | 1 | 1 | 2 |
| 2011 | 1 | 1 | 1 | 2 |
| 2010 | 1 | 2 | 2 | 2 |
| 2008 | 1 | 1 | 1 | 2 |
| 2007 | 1 | 1 | 1 | 1 |
| 2006 | 1 | 1 | 1 | 1 |
| 2005 | 3 | 5 | 6 | 8 |
| 2004 | 1 | 1 | 7 | 7 |
| 2003 | 5 | 2 | 2 | 5 |
| 2002 | 1 | 3 | 7 | 7 |
| 2001 | 1 | 2 | 2 | 2 |
| 2000 | 1 | 3 | 3 | 5 |
| 1999 | 1 | 1 | 1 | 2 |
| 1998 | 1 | 1 | 1 | 1 |
| 1997 | 13 | 12 | 10 | 28 |
| 1996 | 9 | 8 | 7 | 21 |
| 1995 | 5 | 12 | 10 | 15 |
| 1994 | 10 | 25 | 25 | 57 |
| 1993 | 7 | 29 | 29 | 42 |
| 1992 | 5 | 3 | 3 | 7 |
| 1991 | 7 | 12 | 10 | 34 |
| 1990 | 11 | 18 | 18 | 51 |
| 1989 | 8 | 42 | 44 | 79 |
| Totalt alle år | 27 | 130 | 129 | 424 |