• Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? 

      Baktoft, Henrik; Gjelland, Karl Øystein; Szabo-Meszaros, Marcell; Silva, Ana T.; Riha, Milan; Økland, Finn; Alfredsen, Knut; Forseth, Torbjørn (Peer reviewed; Journal article, 2020)
      Repeat spawners constitute an important component of Atlantic salmon populations, but survival of post-spawning individuals (kelts) are often compromised by anthropogenic structures such as hydropower plants (HPPs). Potential ...
    • Experimental hydraulics on fish-friendly trash-racks: an ecological approach 

      Szabo-Meszaros, Marcell; Navaratnam, Christy Ushanth; Aberle, Jochen; Silva, Ana T.; Forseth, Torbjørn; Calles, Olle; Fjeldstad, Hans-Petter; Alfredsen, Knut (Journal article; Peer reviewed, 2018)
      The obstruction of fish migratory routes by hydroelectric facilities is worldwide one of the major threats to freshwater fishes. During downstream migration, fish may be injured or killed on the trash-racks or in the ...
    • Head losses and flow field at trash racks 

      Øvregård, Eirik Bruvik (Master thesis, 2016)
      The purpose of this master thesis was to measure the head loss caused by fish-friendly trash racks in an open water channel and to measure the turbulent flow field around its bars. Angled model trash racks with different ...
    • Head losses and flow field at trash racks 

      Øvregård, Eirik Bruvik (Master thesis, 2016)
      The purpose of this master thesis was to measure the head loss caused by fish-friendly trash racks in an open water channel and to measure the turbulent flow field around its bars. Angled model trash racks with different ...
    • Methods to safeguard downstream migration of salmonids past hydropower structures 

      Szabo-Meszaros, Marcell (Doctoral theses at NTNU;2019:104, Doctoral thesis, 2019)
      Sustainable development of hydropower production must include measures to reduce the negative consequences of river fragmentations. Migratory Atlantic salmon (Salmo salar, L) is one of the species that can be severely ...
    • Modelling mitigation measures for smolt migration at dammed river sections 

      Szabo-Meszaros, Marcell; Forseth, Torbjørn; Baktoft, Henrik; Fjeldstad, Hans-Petter; Silva, Ana T.; Gjelland, Karl Øystein; Økland, Finn; Uglem, Ingebrigt; Alfredsen, Knut (Journal article; Peer reviewed, 2019)
      There is no generic solution to establish safe passage of downstream migrating fish passed hydropower facilities and mitigation measures are species‐ and site‐specific. Development of solutions is thus often based on “trial ...
    • Shelter for juvenile Atlantic salmon: availability and prediction in rivers with and without hydropower regulation. 

      Szabo-Meszaros, Marcell (Master thesis, 2015)
      It is assumed that river regulation in general and hydropeaking in particular, cause elevated degrees of fine sediments in river beds which affect negatively habitat quality for juvenile salmon. Finstad et al. (2007) ...
    • Shelter for juvenile Atlantic salmon: availability and prediction in rivers with and without hydropower regulation. 

      Szabo-Meszaros, Marcell (Master thesis, 2015)
      It is assumed that river regulation in general and hydropeaking in particular, cause elevated degrees of fine sediments in river beds which affect negatively habitat quality for juvenile salmon. Finstad et al. (2007) ...