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First observations of saturopeaking: Characteristics and implications.

https://arctichealth.org/en/permalink/ahliterature290757
Source
Sci Total Environ. 2016 Dec 15; 573:1615-1621
Publication Type
Journal Article
Date
Dec-15-2016
Author
Ulrich Pulg
Knut Wiik Vollset
Gaute Velle
Sebastian Stranzl
Author Affiliation
Uni Environment LFI Uni Research, Bergen, Norway. Electronic address: ulrich.pulg@uni.no.
Source
Sci Total Environ. 2016 Dec 15; 573:1615-1621
Date
Dec-15-2016
Language
English
Publication Type
Journal Article
Keywords
Gases - analysis
Norway
Power Plants
Rivers - chemistry
Water Movements
Abstract
During the monitoring of total dissolved gas (TDG) saturation in the Vetlefjordelva River in western Norway in 2014-2015, characteristic waves of supersaturated water were discovered. These waves were significantly correlated with hydropower operation, which was run by hydropeaking (R2=0.82, p110^% which is considered as potentially lethal for fish in rivers.
PubMed ID
27707575 View in PubMed
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Modelling the effects of stranding on the Atlantic salmon population in the Dale River, Norway.

https://arctichealth.org/en/permalink/ahliterature290125
Source
Sci Total Environ. 2016 Dec 15; 573:574-584
Publication Type
Journal Article
Date
Dec-15-2016
Author
Julian F Sauterleute
Richard D Hedger
Christoph Hauer
Ulrich Pulg
Helge Skoglund
Line E Sundt-Hansen
Tor Haakon Bakken
Ola Ugedal
Author Affiliation
SINTEF Energy Research, P.O. Box 4761, Sluppen, NO 7465 Trondheim, Norway; Sweco Norway, Professor Brochs gate 2, NO 7030 Trondheim, Norway. Electronic address: julian.sauterleute@sweco.no.
Source
Sci Total Environ. 2016 Dec 15; 573:574-584
Date
Dec-15-2016
Language
English
Publication Type
Journal Article
Keywords
Animal Migration
Animals
Models, Theoretical
Norway
Population Dynamics
Power Plants
Rivers - chemistry
Salmo salar - growth & development - physiology
Seasons
Water Movements
Abstract
Rapid dewatering in rivers as a consequence of hydropower operations may cause stranding of juvenile fish and have a negative impact on fish populations. We implemented stranding into an Atlantic salmon population model in order to evaluate long-term effects on the population in the Dale River, Western Norway. Furthermore, we assessed the sensitivity of the stranding model to dewatered area in comparison to biological parameters, and compared different methods for calculating wetted area, the main abiotic input parameter to the population model. Five scenarios were simulated dependent on fish life-stage, season and light level. Our simulation results showed largest negative effect on the population abundance for hydropeaking during winter daylight. Salmon smolt production had highest sensitivity to the stranding mortality of older juvenile fish, suggesting that stranding of fish at these life-stages is likely to have greater population impacts than that of earlier life-stages. Downstream retention effects on the ramping velocity were found to be negligible in the stranding model, but are suggested to be important in the context of mitigation measure design.
PubMed ID
27580469 View in PubMed
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