Browsing Bergen Open Research Archive by Author "Pulg, Ulrich"
Now showing items 1-6 of 6
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Acute effects of gas supersaturation on Atlantic salmon smolt in two Norwegian rivers
Stenberg, Sondre Kvalsvik; Velle, Gaute; Pulg, Ulrich; Skoglund, Helge (Journal article; Peer reviewed, 2020)Total dissolved gas (TDG) supersaturation downstream of hydropower plants may cause gas bubble disease (GBD) and harmful effects in fish. Little is known about tolerance levels of TDG supersaturation on Atlantic salmon ... -
Assessing the potential for gas supersaturation downstream of hydropower plants in Norway, Austria and Germany
Pulg, Ulrich; Lennox, Robert; Enqvist, Martin; Stranzl, Sebastian Franz; Espedal, Espen Olsen; Schwarz, Michael; Lorke, Andreas; Flödl, Peter; Hauer, Christoph; Schletterer, Martin; Halleraker, Jo Halvard; Velle, Gaute (Journal article; Peer reviewed, 2024)Hydroelectric power facilities can generate episodic total dissolved gas supersaturation (TDGS), which is harmful to aquatic life. We developed a decision tree-based risk assessment to identify the potential for TDGS at ... -
Behaviour of anadromous brown trout (Salmo trutta) in a hydropower regulated freshwater system
Dahlmo, Lotte Svengård; Velle, Gaute; Nilsen, Cecilie Iden; Pulg, Ulrich; Lennox, Robert; Vollset, Knut (Journal article; Peer reviewed, 2023)Many Norwegian rivers and lakes are regulated for hydropower, which afects freshwater ecosystems and anadromous fish species, such as sea trout (Salmo trutta). Lakes are an important feature of many anadromous river systems. ... -
Behavioural response of brown trout (Salmo trutta) to total dissolved gas supersaturation in a regulated river
Lennox, Robert J.; Thiemer, Kirstine; Vollset, Knut Wiik; Pulg, Ulrich; Stranzl, Sebastian; Nilsen, Cecilie Iden; Haugen, Thrond Oddvar; Velle, Gaute (Journal article; Peer reviewed, 2022)Total dissolved gas supersaturation from dams and power stations is a chronic freshwater pollutant that is toxic to animals with aquatic respiration. Laboratory ecotoxicology experiments have revealed capacity for captive ... -
Bubbling trouble: Effects of supersaturated water on benthic macroinvertebrates
Velle, Gaute; Isaksen, Trond Einar; Lennox, Robert; Pulg, Ulrich (Journal article; Peer reviewed, 2024)The saturation of total dissolved gases (TDG) in water remains around 100%. Certain circumstances can lead to TDG values exceeding 100%, resulting in TDG supersaturation (TDGS). TDGS above about 110% can be toxic to animals ... -
Light and temperature controls of aquatic plant photosynthesis downstream of a hydropower plant and the effect of plant removal
Demars, Benoît Olivier Laurent; Schneider, Susanne Claudia; Thiemer, Kirstine; Dörsch, Peter; Pulg, Ulrich; Stranzl, Sebastian Franz; Velle, Gaute; Pathak, Devanshi (Journal article; Peer reviewed, 2023)Many rivers worldwide are regulated, and the altered hydrology can lead to mass development of aquatic plants. Plant invasions are often seen as a nuisance for human activities leading to costly remedial actions with ...