Browsing NINA Brage by Author "Power, Michael"
Now showing items 1-10 of 10
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Coastal migration patterns of the four largest Barents Sea Atlantic salmon stocks inferred using genetic stock identification methods
Svenning, Martin-A.; Falkegård, Morten; Niemäle, Eero; Vähä, Juha-Pekka; Wennevik, Vidar; Ozerov, Mikhail; Prusov, Sergey; Dempson, J.Brian; Power, Michael; Fauchald, Per (Peer reviewed; Journal article, 2019)Combining detailed temporal and spatial catch data, including catch per unit effort, with a high-resolution microsatellite genetic baseline facilitated the development of stock-specific coastal migration models for the ... -
Hydropower impacts on reservoir fish populations are modified by environmental variation
Eloranta, Antti; Finstad, Anders Gravbrøt; Helland, Ingeborg Palm; Ugedal, Ola; Power, Michael (Journal article; Peer reviewed, 2018)Global transition towards renewable energy production has increased the demand for newand more flexible hydropower operations. Beforemanagement and stakeholders can make informed choices on potential mitigations, it is ... -
Impacts of piscicide-induced fish removal on resource use and trophic diversity of lake invertebrates
Eloranta, Antti; Kjærstad, Gaute; Power, Michael; Lakka, Hanna-Kaisa; Arnekleiv, Jo Vegar; Finstad, Anders Gravbrøt (Peer reviewed; Journal article, 2022)Chemical eradication of non-native species has become a widely used method to mitigate the potential negative im- pacts of altered competitive or predatory dynamics on biodiversity and natural ecosystem processes. However, ... -
Introduced European smelt (Osmerus eperlanus) affects food web and fish community in a large Norwegian lake
Eloranta, Antti; Johnsen, Stein Ivar; Power, Michael; Bærum, Kim Magnus; Sandlund, Odd Terje; Finstad, Anders Gravbrøt; Rognerud, Sigurd; Museth, Jon (Journal article; Peer reviewed, 2018)Invasive and introduced fishes can affect recipient ecosystems and native species via altered competitive and predatory interactions, potentially leading to top-down and bottom-up cascading impacts. Here, we describe a ... -
Introduction of Mysis relicta (Mysida) reduces niche segregation between deep-water Arctic charr morphs
Knudsen, Rune; Eloranta, Antti; Siwertsson, Anna; Paterson, Rachel A.; Power, Michael; Sandlund, Odd Terje (Peer reviewed; Journal article, 2019)Niche diversification of polymorphic Arctic charr can be altered by multiple anthropogenic stressors. The opossum-shrimp (Mysis relicta) was introduced to compensate for reduced food Resources for fish following hydropower ... -
One Hundred Pressing Questions on the Future of Global Fish Migration Science, Conservation, and Policy
Lennox, Robert J.; Paukert, Craig P.; Aarestrup, Kim; Auger-Méthé, Marie; Baumgartner, Lee; Birnie-Gauvin, Kim; Bøe, Kristin; Brink, Kerry; Brownscombe, Jacob W.; Chen, Yushun; Davidsen, Jan Grimsrud; Eliason, Erika J.; Filous, Alexander; Gillanders, Bronwyn M.; Helland, Ingeborg Palm; Horodysky, Andrij Z.; Januchowski-Hartley, Stephanie R.; Lowerre-Barbieri, Susan K.; Lucas, Martyn C.; Martins, Eduardo G.; Murchie, Karen J.; Pompeu, Paulo S.; Power, Michael; Raghavan, Rajeev; Rahel, Frank J.; Secor, David; Thiem, Jason D.; Thorstad, Eva Bonsak; Ueda, Hiroshi; Whoriskey, Frederick G.; Cooke, Steven J. (Journal article; Peer reviewed, 2019)Migration is a widespread but highly diverse component of many animal life histories. Fish migrate throughout the world’s oceans, within lakes and rivers, and between the two realms, transporting matter, energy, and other ... -
Perspectives on the environmental implications of sustainable hydro-power: comparing countries, problems and approaches
Alfredsen, Knut; Helland, Ingeborg Palm; Martins, Eduardo G.; Power, Michael (Peer reviewed; Journal article, 2022)Perspectives on the Environmental Implications of Sustainable Hydropower gathers scientific papers from three of the worlds most important hydropower producers to discuss aspects of sustainable hydropower and the means by ... -
Temporal changes in the relative abundance of anadromous Arctic charr, brown trout, and Atlantic salmon in northern Europe: Do they reflect changing climates?
Svenning, Martin; Falkegård, Morten; Dempson, J. Brian; Power, Michael; Bårdsen, Bård-Jørgen; Guðbergsson, Gudni; Fauchald, Per (Peer reviewed; Journal article, 2021)1. Warming temperatures resulting from climate change may alter the distribution and abundance of many freshwater fish species, especially those in northern latitudes. Owing to interspecific differences in temperature ... -
Temporal shifts in the marine feeding of individual Atlantic salmon inferred from scale isotope ratios
Power, Michael; Thorstad, Eva Bonsak; Forseth, Torbjørn; Fiske, Peder (Peer reviewed; Journal article, 2023)Given the limited information on prey use during the marine residency period for Atlantic salmon, scales were collected from salmon at return to the River Namsen (Norway) for spawning after 1 year at sea, and scale material ... -
Trophic niche similarity among sea trout Salmo trutta in Central Norway investigated using different time-integrated trophic tracers
Davidsen, Jan Grimsrud; Knudsen, Rune; Power, Michael; Sjursen, Aslak Darre; Rønning, Lars; Hårsaker, Karstein; Næsje, Tor; Arnekleiv, Jo Vegar (Journal article; Peer reviewed, 2017)From 2011 to 2013, anadromous brown trout Salmo trutta (213−730 mm, total body length, LT) were collected during or shortly after their marine feeding migration at 7 different localities in central Norway. The mean volume ...