Localities: Kverndammen: 29.08.1991
| Reporter: | Porsgrunn videregående skole |
| Site: | Kverndammen () |
| Date: | 1991-08-29 |
| Activity: | VANDA: Planteplankton |
Observation
| Species: | Ankistrodesmus sp. |
| Number: | 1 |
| Original: | Ja |
| Species: | Dinobryon sociale |
| Number: | 1 |
| Original: | Ja |
| Species: | Merismopedia sp. |
| Number: | 1 |
| Original: | Ja |