Species: Scenedesmus arcuatus
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Arkavatnet | Rogaland, Norway | 2 | 1 | 0 | 1994-09-12 | |
| Hammervatnet | Trøndelag, Norway | 3 | 1 | 0 | 1994-06-18 | |
| Hostadvatnet | Møre og Romsdal, Norway | 3 | 1 | 0 | 1993-06-16 | |
| Mosvatnet | Rogaland, Norway | 1 | 1 | 0 | 1994-05-25 | |
| Nøklevann | Oslo, Norway | 2 | 1 | 0 | 1990-06-05 | |
| Svanevatnet | Rogaland, Norway | 1 | 1 | 0 | 1989-09-04 | |
| Tretjønnet | Agder, Norway | 1 | 1 | 0 | 1990-06-26 |