Family: Tubificidae
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 1993 | 4 | 4 | 4 | 6 |
| 1992 | 2 | 6 | 6 | 6 |
| 1991 | 1 | 2 | 2 | 2 |
| 1990 | 3 | 4 | 4 | 4 |
| 1989 | 3 | 6 | 6 | 6 |
| Totalt alle år | 6 | 12 | 12 | 24 |
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 1993 | 4 | 4 | 4 | 6 |
| 1992 | 2 | 6 | 6 | 6 |
| 1991 | 1 | 2 | 2 | 2 |
| 1990 | 3 | 4 | 4 | 4 |
| 1989 | 3 | 6 | 6 | 6 |
| Totalt alle år | 6 | 12 | 12 | 24 |