Genus: Scenedesmus
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2005 | 1 | 1 | 1 | 1 |
| 2004 | 1 | 1 | 1 | 1 |
| 1998 | 1 | 1 | 1 | 1 |
| 1996 | 2 | 3 | 3 | 3 |
| 1994 | 8 | 14 | 14 | 15 |
| 1993 | 8 | 19 | 19 | 22 |
| 1992 | 2 | 1 | 1 | 2 |
| 1991 | 9 | 20 | 19 | 29 |
| 1990 | 12 | 27 | 26 | 61 |
| 1989 | 10 | 25 | 25 | 29 |
| Totalt alle år | 25 | 66 | 65 | 164 |
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Responsible editor: Doris Jorde