Localities: Kruktjønna: 31.05.1991
| Reporter: | Fosen videregående skole |
| Site: | Kruktjønna () |
| Date: | 1991-05-31 |
| Activity: | VANDA: Dyreplankton |
Observation
| Species: | Holopedium gibberum |
| Number: | 2 |
| Original: | Ja |
| Species: | Bosmina longispina |
| Number: | 2 |
| Original: | Ja |
| Species: | Cyclops scutifer |
| Number: | 3 |
| Original: | Ja |
| Species: | Daphnia longispina |
| Number: | 1 |
| Original: | Ja |
| Species: | Diaphanosoma brachyurum |
| Number: | 1 |
| Original: | Ja |
| Species: | Kellicottia longispina |
| Number: | 3 |
| Original: | Ja |