Upstream passage problems for wild Atlantic salmon (Salmo salar L.) in a regulated river and its effect on the population

2008 ◽  
pp. 111-127 ◽  
Author(s):  
H. Lundqvist ◽  
P. Rivinoja ◽  
K. Leonardsson ◽  
S. McKinnell
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Regulated River ◽  
Atlantic Salmon Salmo Salar

scholarly journals Survival of eggs of Atlantic salmon (Salmo salar) in a drawdown zone of a regulated river influenced by groundwater

Hydrobiologia ◽  
2014 ◽  
Vol 743 (1) ◽  
pp. 269-284 ◽  
Author(s):  
R. Casas-Mulet ◽  
K. Alfredsen ◽  
Å. Brabrand ◽  
S. J. Saltveit
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Regulated River ◽  
Atlantic Salmon Salmo Salar ◽  
Drawdown Zone

scholarly journals Upstream passage problems for wild Atlantic salmon (Salmo salar L.) in a regulated river and its effect on the population

Hydrobiologia ◽  
2008 ◽  
Vol 602 (1) ◽  
pp. 111-127 ◽  
Author(s):  
H. Lundqvist ◽  
P. Rivinoja ◽  
K. Leonardsson ◽  
S. McKinnell
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Regulated River ◽  
Atlantic Salmon Salmo Salar

Survival and migration speed of radio-tagged Atlantic salmon (Salmo salar) smolts in two large rivers: one without and one with dams

2018 ◽  
Vol 75 (8) ◽  
pp. 1177-1184 ◽  
Author(s):  
Riina Huusko ◽  
Pekka Hyvärinen ◽  
Mikko Jaukkuri ◽  
Aki Mäki-Petäys ◽  
Panu Orell ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Regulated River ◽  
Migration Speed ◽  
Regulated Rivers ◽  
Atlantic Salmon Salmo Salar ◽  
Hydropower Plants ◽  
Similar Survival ◽  
And Migration ◽  
Sea Area

Connectivity problems in fish migration in regulated rivers have been widely studied, but few studies have rigorously compared parallel migration success between regulated and free-flowing rivers. Here, survival and migration speed of downstream migrating radio-tagged Atlantic salmon (Salmo salar) smolts were studied in two large neighboring rivers in the northern Baltic Sea area: one without and one with dams. Both rivers have a free-flowing upper section, where the survival and migration speed of salmon smolts were similar. Survival along the lower section of the free-flowing river was about six times higher than in the lower part of the regulated river with five hydropower plants. Migration speed of smolts was also significantly faster in the river without dams. These severe problems in downstream connectivity in the regulated river pose challenging tasks for restoration of salmon populations.

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