Blar i NTNU Open på forfatter "Berg, Ole Kristian"
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Density effect on growth rate of juvenile Atlantic salmon (Salmo salar) in manipulated large rivers
Vae, Eivind (Master thesis, 2015)Growth rate of young-of-the-year (YOY) Atlantic salmon (Salmo salar) in low-density rivers was substantial better relative to YOY captured in normal density rivers. Mean growth index ± SD for YOY in low-density rivers was ... -
Density independent use of shallow riverine areas in juvenile Atlantic salmon
Puffer, Michael; Berg, Ole Kristian; Hamnes, Frøydis Bolme; Bentsen, Vidar; Koch, Wouter; Ugedal, Ola; Forseth, Torbjørn; Arnekleiv, Jo Vegar; Einum, Sigurd (Journal article; Peer reviewed, 2018)Habitat use of aquatic organisms is essential to evaluate effects of many environmental challenges like effects of hydro-power regulation, where stranding may occur under hydropeaking (rapid dewatering of shallow river ... -
Desnity dependent habitat use of Atlantic salmon, Salmo salar L.- stranding in hydropower rivers
Bentsen, Vidar Johan (Master thesis, 2011)An experiment was performed in four artificial stream channels during summer and autumn to investigate the effects of biotic and abiotic factors on habitat choice of juvenile Atlantic salmon (Salmo salar). To investigate ... -
Distribution and bioaccumulation of POPs and mercury in the Ga-Selati River (South Africa) and the rivers Gudbrandsdalslågen and Rena (Norway)
Govaerts, Alison; Vera, Verhaert; Covaci, Adrian; Jaspers, Veerle; Berg, Ole Kristian; Addo-Bediako, Abraham; Jooste, Antoinette; Bervoets, Lieven (Journal article; Peer reviewed, 2018)Biomagnification of Hg and persistent organic pollutants (POPs: polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), polybrominated diphenyl ethers (PBDEs)) in aquatic food chains can lead to high pollutant ... -
Early maximal strength training improves leg strength and postural stability in elderly following hip fracture surgery
Berg, Ole Kristian; Stutzer, Jens-Meinhard; Hoff, Jan; Wang, Eivind (Peer reviewed; Journal article, 2021)Introduction: Hip fractures predominantly occur in the geriatric population and results in increased physical inactivity and reduced independency, largely influenced by a downward spiral of ambulatory capacity, related to ... -
Effects of intra- and interspecific competition and hydropeaking on growth of juvenile Atlantic salmon (Salmo salar)
Puffer, Michael; Berg, Ole Kristian; Huusko, Ari; Vehanen, Teppo; Einum, Sigurd (Journal article, 2017)The effects of hydropeaking and intra- and interspecific competition on the growth performance (growth in length, mass and lipid content) of juvenile Atlantic salmon Salmo salar and brown trout Salmo trutta were studied ... -
Energetic Consequences of Stranding of Juvenile Atlantic Salmon (Salmo salar L.)
Puffer, Michael; Berg, Ole Kristian; Einum, Sigurd; Saltveit, Svein Jakob; Forseth, Torbjørn (Journal article, 2017)An effect of hydropower and hydropeaking regulation in rivers is stranding of fish. Those fishes that survive stranding may experience stranding as a stressful situation. In four experimental stranding experiments (each ... -
Ernæring og habitatbruk hos sik (Coregonus lavaretus) og røye (Salvelinus alpinus) i Aursunden
Westberg, Tron Steffen (Master thesis, 2012)Sik (Coregonus lavaretus) dominerte i littorale- og littorale habitater. Røyr hadde størst utbredelse i profundale habitater. Artene viste betydelig næringsoverlapp. -
Fiskebiologiske undersøkelser i Stjørdalselva 1990-2000. Del II. Rognutvikling, vekst og energetikk hos ungfisk, data om voksen fisk
Arnekleiv, Jo Vegar; Rønning, Lars; Berg, Ole Kristian (NTNU Vitenskapsmuseet Rapport Zoologisk Serie, 0802-0833; 2002:2, Research report, 2002) -
Forsøk for å bedre oppgangen i fisketrappen ved Løpet Kraftstasjon, Rena
Berg, Ole Kristian; Berg, Magnus (NTNU Vitenskapsmuseet Zoologisk Notat, 1504-503X; 1992:2, Research report, 1992) -
Hydropeaking Effects on Riverine Benthic Invertebrate Fauna Composition and Drift
Sollien, Vegard Pedersen (Master thesis, 2015)In earlier studies, changes have been detected in the composition of the lotic benthic macroinvertebrate fauna as a consequence of hydropeaking. Rapid fluctuations in discharge lead to sudden dewatering of river bed area ... -
Maximal strength training in patients with inflammatory rheumatic disease: implications for physical function and quality of life
Haglo, Håvard Pedersen; Berg, Ole Kristian; Hoff, Jan; Helgerud, Jan; Wang, Eivind (Journal article; Peer reviewed, 2022)Purpose: Patients with inflammatory rheumatic disease (IRD) have attenuated muscle strength in the lower extremities, resulting in impaired physical function and quality of life. Although maximal strength training (MST), ... -
Maximal strength training-induced improvements in forearm work efficiency are associated with reduced blood flow
Berg, Ole Kristian; Nyberg, Stian Kwak; Windedal, Tobias Midtvedt; Wang, Eivind (Peer reviewed; Journal article, 2018)Maximal strength training (MST) improves work efficiency. However, since blood flow is greatly dictated by muscle contractions in arms during exercise, and vascular conductance is lower, it has been indicated that arms ... -
Migration and habitat use of the landlocked riverine Atlantic salmon Salmo salar småblank
Davidsen, Jan Grimsrud; Eikås, Linda; Hedger, Richard David; Thorstad, Eva Bonsak; Rønning, Lars; Sjursen, Aslak Darre; Berg, Ole Kristian; Bremset, Gunnbjørn; Karlsson, Sten; Sundt-Hansen, Line Elisabeth Breivik (Peer reviewed; Journal article, 2020)“Småblank” is the only population of Atlantic salmon in Europe living its entire life in the river habitat without performing migrations to the sea or lakes. Home range size and habitat use were compared between an unregulated ... -
Reliability of forearm oxygen uptake during handgrip exercise : assessment by ultrasonography and venous blood gas
Nyberg, Stian Kwak; Berg, Ole Kristian; Helgerud, Jan; Wang, Eivind (Journal article; Peer reviewed, 2018)Assessment of forearm oxygen uptake (O2) during handgrip exercise is a keenly investigated concept for observing small muscle mass metabolism. Although a combination of Doppler ultrasound measurements of brachial artery ... -
Seasonal effects of hydropeaking on growth, energetics and movement of juvenile atlantic salmon (Salmo salar)
Puffer, Michael; Berg, Ole Kristian; Huusko, Ari; Vehanen, Teppo; Forseth, Torbjørn; Einum, Sigurd (Journal article; Peer reviewed, 2015)The performance and movements of juvenile Atlantic salmon Salmo salar exposed to variable water discharge (simulating hydropeaking) but with a stable water‐covered area were studied in six experimental stream channels, ... -
Size dependency of spatial and temporal patterns of marine migration of sea trout (Salmo trutta L.) and Arctic char (Salvelinus alpinus (L.)) in Repparfjord Northern Norway
Ulvund, John Birger (Master thesis, 2011)Acoustic telemetry was used to study the movements and habitat use of sea trout (Salmo trutta L.) and Arctic char (Salvelinus alpinus (L.)) in Repparfjord in Northern Norway during July until October 2010. In total, 18 ... -
Size-dependent habitat use in juvenile Atlantic salmon (Salmo salar L.)
Hamnes, Frøydis Bolme (Master thesis, 2011). -
Size-dependent habitat use of juvenile brown trout (Salmo trutta L.) in an artificial river
Kielland, Oystein Nordeide (Master thesis, 2013)Effektkjøring i vannkraftverk gir økt variasjon i vannstand med mulige skadelige effekter på organismer som lever i elver. Fisker, som forekommer i de grunne habitatene av elva, kan være sårbare for stranding og dermed ha ... -
Size-dependent habitat use of juvenile brown trout (Salmo trutta L.) in an artificial river
Kielland, Øystein Nordeide (Master thesis, 2013)Effektkjøring i vannkraftverk gir økt variasjon i vannstand med mulige skadelige effekter på organismer som lever i elver. Fisker, som forekommer i de grunne habitatene av elva, kan være sårbare for stranding og dermed ha ...