Search Results - "Diserud, O H"

Modeling salmon lice effects on sea trout population dynamics using an individual-based approach by Hedger, RD, Diserud, OH, Finstad, B, Jensen, AJ, Hendrichsen, DK, Ugedal, O, Næsje, TF

“…Salmon lice Lepeophtheirus salmonis infestation of sea trout Salmo trutta results in both additional marine mortality and behavioral changes which may…”
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Changes in swimming depths of Atlantic salmon Salmo salar post-smolts relative to light intensity by Davidsen, J. G., Plantalech Manel-la, N., ØKland, F., Diserud, O. H., Thorstad, E. B., Finstad, B., Sivertsgård, R., McKinley, R. S., Rikardsen, A. H.

“…Eight hatchery‐reared Atlantic salmon Salmo salar post‐smolts, implanted with acoustic depth sensing transmitters and manually tracked for 5–12 h in the…”
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Modelling climate change effects on Atlantic salmon: Implications for mitigation in regulated rivers by Sundt-Hansen, L.E., Hedger, R.D., Ugedal, O., Diserud, O.H., Finstad, A.G., Sauterleute, J.F., Tøfte, L., Alfredsen, K., Forseth, T.

“…Climate change is expected to alter future temperature and discharge regimes of rivers. These regimes have a strong influence on the life history of most…”
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Escaped farmed Atlantic salmon in Norwegian rivers during 1989–2013 by Diserud, O H, Fiske, P, Sægrov, H, Urdal, K, Aronsen, T, Lo, H, Barlaup, B T, Niemelä, E, Orell, P, Erkinaro, J, Lund, R A, Økland, F, Østborg, G M, Hansen, L P, Hindar, K

“…Abstract We report on the data from an extensive monitoring programme for the occurrence of escaped farmed Atlantic salmon (Salmo salar) in Norwegian rivers…”
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Natural and anthropogenic drivers of escaped farmed salmon occurrence and introgression into wild Norwegian Atlantic salmon populations by Diserud, O H, Fiske, P, Karlsson, S, Glover, K A, Næsje, T, Aronsen, T, Bakke, G, Barlaup, B T, Erkinaro, J, Florø-Larsen, B, Foldvik, A, Heino, M, Kanstad-Hanssen, Ø, Lo, H, Lund, R A, Muladal, R, Niemelä, E, Økland, F, Østborg, G M, Otterå, H, Skaala, Ø, Skoglund, H, Solberg, I, Solberg, M F, Sollien, V P, Sægrov, H, Urdal, K, Wennevik, V, Hindar, K

“…Abstract Marine aquaculture of Atlantic salmon (Salmo salar) is a relatively new industry where breeding programs have led to rapid genetic change in the…”
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Survival and behaviour of Atlantic salmon smolts passing a run‐of‐river hydropower facility with a movable bulb turbine by Thorstad, E. B., Havn, T. B., Sæther, S. A., Heermann, L., Teichert, M. A. K., Diserud, O. H., Tambets, M., Borcherding, J., Økland, F.

“…Downstream migration of radio‐tagged Atlantic salmon smolts, Salmo salar L., was studied in the Kinzig, Germany, to examine effects of passing a run‐of‐river…”
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Water discharge affects Atlantic salmon Salmo salar smolt production: a 27 year study in the River Orkla, Norway by Hvidsten, N. A., Diserud, O. H., Jensen, A. J., Jensås, J. G., Johnsen, B. O., Ugedal, O.

“…A model that explains 48% of the annual variation in Atlantic salmon Salmo salar smolt production in the River Orkla, Norway, has been established. This…”
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Downstream migration of Atlantic salmon smolts past a low head hydropower station equippped with Archimedes screw and Francis turbines by Havn, T.B, Sæther, S.A, Thorstad, E.B, Teichert, M.A.K., Heermann, L., Diserud, O.H., Borcherding, J., Tambets, M., Økland, F.

“…Downstream migration of 112 radio-tagged Atlantic salmon smolts was studied in the Diemel, Germany, to examine 1) mortality and migration speeds during…”
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Movements of dead fish in rivers by Havn, T. B., Økland, F., Teichert, M. A. K., Heermann, L., Borcherding, J., Sæther, S. A., Tambets, M., Diserud, O. H., Thorstad, E. B.

“…Background The aim of telemetry studies is often to determine the fate and mortality rates of fish. A moving fish is usually regarded as alive and a long-term…”
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A concept for improving Atlantic salmon Salmo salar smolt migration past hydro power intakes by Fjeldstad, H. P., Uglem, I., Diserud, O. H., Fiske, P., Forseth, T., Kvingedal, E., Hvidsten, N. A., ØKland, F., Järnegren, J.

“…In this study, cost effective (in terms of reducing loss of power production) measures for increasing bypass migration of Atlantic salmon Salmo salar were…”
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Modelling the complete life-cycle of Atlantic salmon (Salmo salar L.) using a spatially explicit individual-based approach by Hedger, R.D., Sundt-Hansen, L.E., Forseth, T., Diserud, O.H., Ugedal, O., Finstad, A.G.

“…► Individual-based models of salmon population abundance should be spatially explicit. ► Sensitivity to parameters depends on developmental stage. ► Feedback…”
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Genetic evidence of farmed straying and introgression in Swedish wild salmon populations by Palm, S, Karlsson, S, Diserud, OH

“…Escaped farmed Atlantic salmon represent a well-documented and ongoing threat to wild conspecific populations. In Norway, the world-leading producer of farmed…”
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magnitude of local host specificity for phytophagous insects and its implications for estimates of global species richness by Odegaard, F, Diserud, O.H, Engen, S, Aagaard, K

“…Estimates of the global number of arthropod species range from 2 million to more than 30 million species. One of the most critical assumptions affecting the…”
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Salmon louse infestation in wild brown trout populations generates multi-modal mixture distributions by Diserud, Ola H., Hedger, Richard, Finstad, Bengt, Hendrichsen, Ditte, Jensen, Arne J., Ugedal, Ola

“…For successful evaluation of the overall effects of salmon louse infestation on brown trout population dynamics, it is crucial to have a realistic…”
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Statistical and ecological challenges of monitoring parasitic salmon lice infestations in wild salmonid fish stocks by Helland, Ingeborg Palm, Uglem, Ingebrigt, Jansen, Peder A., Diserud, Ola H., Bjørn, Pål Arne, Finstad, Bengt

“…Ecological monitoring programmes should provide precise data to inform management, but the data quality is often limited by methodological challenges and the…”
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Abundance of sea lice larvae in plankton samples: determination of optimal sample sizes by Fernandez-Gonzalez, V., Ulvan, E.M., Sanchez-Jerez, P., Diserud, O.H., Toledo-Guedes, K., Casado-Coy, N., Klebert, P., Uglem, I.

“…Sea lice infestations have been a major problem for the global salmon farming industry for several decades. To date, few studies have addressed the measurement…”
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Beta-Binomial Model for Host Specificity among Organisms in Trophic Interactions by Diserud, Ola H, Ødegaard, Rode

“…In this paper, we present a new stochastic model where the host specificity among organisms in trophic interactions in a community, say parasite-host…”
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The importance of plant relatedness for host utilization among phytophagous insects by Ødegaard, Frode, Diserud, Ola H., Østbye, Kjartan

“…Current methods for measuring similarity among phytophagous insect communities fail to consider the phylogenetic relationship between host plants. We analysed…”
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Riding the tide: estuarine movements of a sciaenid fish,Argyrosomus japonicus by Næsje, Tor Fredrik, Cowley, Paul Denfer, Diserud, Ola Håvard, Childs, Amber-Robyn, Kerwath, Sven Ebo, Thorstad, Eva Bonsak

“…The movement behaviour of juvenile dusky kobArgyrosomus japonicus(n = 25) was studied in the 12 km long Great Fish Estuary, South Africa, by collecting…”
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Improving abundance estimates from electrofishing removal sampling by Hedger, Richard D., de Eyto, Elvira, Dillane, Mary, Diserud, Ola H., Hindar, Kjetil, McGinnity, Philip, Poole, Russell, Rogan, Ger

“…Estimates of fish abundance from electrofishing surveys depend on accurate estimation of capture probability. We examine in this paper how estimates of capture…”
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