|
Lehtonen, H., 1987
|
|
Lehtonen, H., 1987
|
|
Finland |
|
coastal |
| Helsinki, Gulf of Finland |
| |
|
|
|
111 |
111 |
|
|
|
|
|
|
| %
Ref.:
Fontell, E., H. Lehtonen and J. Lappalainen, 2003
|
|
- °C |
|
month/s
|
|
|
|
cm
|
|
|
|
-
Mean: |
Min Ref.:
Max Ref.:
Mean Ref.:
|
| In a separate study in the western Helsinki sea area, pikeperch eggs were laid in artificial spawning nests between May and June 1999. The following conditions: temperature (13-19ºC), salinity (4.0-5.9 ppt), and depth (2-3 m) were found to be the most suitable conditions where the majority of the eggs were spawned during the study period (Ref. 91143). |