scholarly journals Classification of hydropeaking impacts on Atlantic salmon populations in regulated rivers

2021 ◽  
Author(s):  
Tor Haakon Bakken ◽  
Atle Harby ◽  
Torbjørn Forseth ◽  
Ola Ugedal ◽  
Julian F. Sauterleute ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Regulated Rivers

Classification of fresh Atlantic salmon (Salmo salar L.) fillets stored under different atmospheres by hyperspectral imaging

2012 ◽  
Vol 109 (3) ◽  
pp. 482-489 ◽  
Author(s):  
Izumi Sone ◽  
Ragnar L. Olsen ◽  
Agnar H. Sivertsen ◽  
Guro Eilertsen ◽  
Karsten Heia
Keyword(s):  
Atlantic Salmon ◽  
Hyperspectral Imaging ◽  
Salmo Salar ◽  
Atlantic Salmon Salmo Salar

Challenges for Diadromous Fishes in a Dynamic Global Environment

2009 ◽  
Keyword(s):  
Atlantic Salmon ◽  
Regional Scale ◽  
Geographical Location ◽  
Stream Temperature ◽  
Climate Change Scenarios ◽  
Spatial And Temporal Patterns ◽  
Specific Factors ◽  
Thermal Variability

<em>Abstract</em>.-In this paper, we develop logistic stream temperature models for 17 selected sites in northeastern North America and evaluate the potential changes from warming climate under two scenarios (low and medium-high emissions). Classification of the magnitude of the (1) long-term (1980-2002) and (2) annual thermal regimes allowed examination of the relative spatial and temporal patterns of instream thermal variability across the 17 sites. At the regional scale, the classification identified three broad groups of rivers (cool, intermediate, and warm) reflecting geographical location and moderated by site-specific factors. The interannual classification identified four thermal year types reflecting increasing magnitude and variability in the annual thermal regime. The dominance of thermal year types and the frequency of occurrence indicated significant variability between years for all sites and within thermal regions. Under the two climate change scenarios, stream temperatures in the 17 sites are projected to increase by 2050. However, there are regional differences with intermediate and warm region rivers projected to be more affected, particularly under the medium-high emissions scenario. More significantly, the duration of weeks when temperatures exceed 20°C (taken as a threshold of thermal stress for Atlantic salmon <em>Salmo salar</em>) is projected to increase with variability in response between river groups. We comment on the ecological significance of these potential future increases in stream temperature and duration for Atlantic salmon in the region.

scholarly journals Modelling climate change effects on Atlantic salmon: Implications for mitigation in regulated rivers

2018 ◽  
Vol 631-632 ◽  
pp. 1005-1017 ◽  
Author(s):  
L.E. Sundt-Hansen ◽  
R.D. Hedger ◽  
O. Ugedal ◽  
O.H. Diserud ◽  
A.G. Finstad ◽  
...  
Keyword(s):  
Climate Change ◽  
Atlantic Salmon ◽  
Regulated Rivers ◽  
Climate Change Effects

scholarly journals Atlantic salmon in regulated rivers: Understanding river management through the ecosystem services lens

2021 ◽  
Author(s):  
Johan Watz ◽  
David Aldvén ◽  
Patrik Andreasson ◽  
Khadija Aziz ◽  
Marco Blixt ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Atlantic Salmon ◽  
River Management ◽  
Regulated Rivers

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.

CLASSIFICATION OF FLOW REGIMES FOR ENVIRONMENTAL FLOW ASSESSMENT IN REGULATED RIVERS: THE HUAI RIVER BASIN, CHINA

2011 ◽  
Vol 28 (7) ◽  
pp. 989-1005 ◽  
Author(s):  
Y. Zhang ◽  
A. H. Arthington ◽  
S. E. Bunn ◽  
S. Mackay ◽  
J. Xia ◽  
...  
Keyword(s):  
River Basin ◽  
Flow Regimes ◽  
Environmental Flow ◽  
Regulated Rivers ◽  
Huai River Basin ◽  
Huai River ◽  
The Huai River Basin
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