Ominaisuus:Display en
Järvi-meriwikistä
1
No algae +
Solid ice cover (55 cm) +
Solid ice cover (34 cm) +
Solid ice cover (20 cm) +
Solid ice cover (53 cm) +
''E. canadensis'' not observed +
Ice break-up +
No algae +
Freezing +
''E. canadensis'' not observed +
Joutsenet vappupäivänä 20... +
Vappuaattona 2017 Riihini... +
Talvista Hirvolanlahtea +
No algae +
No litter +
4.5 m (Secchi depth) +
''E. canadensis'' not observed +