1
3.9 m (Secchi depth) +
Solid ice cover (20 cm) +
Solid ice cover (20 cm) +
''E. canadensis'' not observed +
Ice break-up +
No algae +
''E. canadensis'' not observed +
Freezing +
Joutsenet vappupäivänä 2017 Kapustalahde... +
Vappuaattona 2017 Riihiniemeltä Matoniem... +
Talvista Hirvolanlahtea +
No algae +
''E. canadensis'' not observed +
4.5 m (Secchi depth) +
No litter +


