Genus: Staurastrum
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2018 | 1 | 1 | 1 | 1 |
| 1996 | 3 | 4 | 4 | 5 |
| 1994 | 3 | 10 | 10 | 12 |
| 1993 | 6 | 21 | 22 | 25 |
| 1992 | 1 | 3 | 3 | 3 |
| 1991 | 6 | 21 | 22 | 29 |
| 1990 | 14 | 21 | 21 | 44 |
| 1989 | 12 | 23 | 24 | 29 |
| Totalt alle år | 24 | 57 | 57 | 148 |
Sustain.no is provided by the Norwegian Centre for Science Education
Responsible editor: Doris Jorde