Localities: Tveitevannet: 25.08.1989
| Reporter: | Langhaugen videregående skole |
| Site: | Tveitevannet () |
| Date: | 1989-08-25 |
| Activity: | VANDA: Dyreplankton |
Observation
| Species: | Eudiaptomus gracilis |
| Number: | 2 |
| Original: | Ja |
| Species: | Chaoborus flavicans |
| Number: | 3 |
| Original: | Ja |
| Species: | Daphnia longispina |
| Number: | 3 |
| Original: | Ja |
| Species: | Keratella quadrata |
| Number: | 1 |
| Original: | Ja |