• Does Catch-and-Release Angling Alter the Behavior and Fate of Adult Atlantic Salmon During Upriver Migration? 

      Lennox, Robert J.; Uglem, Ingebrigt; Cooke, Steven J.; Næsje, Tor; Whoriskey, Frederick G.; Havn, Torgeir Børresen; Ulvan, Eva Marita; Solem, Øyvind; Thorstad, Eva Bonsak (Journal article; Peer reviewed, 2015)
      To reproduce, Atlantic Salmon Salmo salar return to freshwater rivers and migrate upriver to spawning areas. This migration is the basis for recreational fisheries, which for conservation reasons are increasingly characterized ...
    • Does defoliation frequency and severity influence plant productivity? The role of grazing management and soil nutrients 

      Venter, Alexander Samuel; Hawkins, Heidi-Jayne; Cramer, Michael D. (Peer reviewed; Journal article, 2020)
      Rangeland management approaches, including rotational grazing, rely on assumptions about plant growth responses to the intensity, or severity (sward height) plus frequency, of defoliation. We tested these assumptions at ...
    • Does lack of evolvability constrain adaptation? If so, on what time scales? 

      Voje, Kjetil L.; Grabowski, Mark; Holstad, Agnes; Porto, Arthur; Tsuboi, Masahito; Bolstad, Geir Hysing (Chapter, 2023)
      The relevance of genetic constraints for evolutionary change beyond microevolutionary timescales is debated. The high evolvability of natural populations predicts rapid adaptation, but evolvability is often found to correlate ...
    • Don't mind if I do: Arctic humpback whales respond to winter foraging opportunities before migration 

      Kettemer, Lisa Elena; Ramm, Theresia; Broms, Fredrik Björn; Biuw, Martin; Blanchet, Marie-Anne; Bourgeon, Sophie; Dubourg, Paul; Ellendersen, Anna C. J.; Horaud, Mathilde; Kershaw, Joanna; Miller, Patrick J. O.; Øien, Nils Inge; Pallin, Logan J.; Rikardsen, Audun H. (Peer reviewed; Journal article, 2023)
      Migration patterns are fundamentally linked to the spatio-temporal distributions of prey. How migrating animals canrespond to changes in their prey’s distribution and abundance remains largely unclear. During the ...
    • “Don’t confuse me with facts”—how right wing populism affects trust in agencies advocating anthropogenic climate change as a reality 

      Krange, Olve; Kaltenborn, Bjørn Petter; Hultman, Martin (Peer reviewed; Journal article, 2021)
      Everyday public denial of anthropogenically caused climate change (ACC) has complex antecedents and exists on both individual and institutional levels. Earlier research has linked ACC denial to opposition to formal science ...
    • Down a hole: missing GPS positions reveal birth dates of an underground denning species, the red fox 

      Walton, Zea Ann; Mattisson, Jenny (Others, 2021)
      Global positioning system (GPS) technology is increasingly used to study animal behavior. However, some animals exhibit behaviors that may result in the failure to acquire a GPS position, such as for species with underground ...
    • Downstream migration of Atlantic salmon smolt at three German hydropower stations 

      Økland, Finn; Teichert, Maxim A.K.; Thorstad, Eva B.; Havn, Torgeir B.; Heermann, Lisa; Sæther, Stein Are; Diserud, Ola H.; Tambets, Meelis; Hedger, Richard D.; Borcherding, Jost (NINA Rapport;1203, Research report, 2016-10-04)
      Økland, F., Teichert, M.A.K., Thorstad, E.B., Havn, T.B., Heermann, L., Sæther, S.A., Diserud, O.H., Tambets, M., Hedger, R.D. & Borcherding, J. 2016. Downstream migration of Atlantic salmon smolt at three German hydropower ...
    • Downstream migration of Atlantic salmon smolts at Unkelmühle power station and Buisdorf dam in 2016 

      Havn, Torgeir B.; Økland, Finn; Heermann, Lisa; Thorstad, Eva B.; Teichert, Maxim A.K.; Sæther, Stein Are; Tambets, Meelis; Borcherding, Jost (NINA Report;1412, Research report, 2018)
      Havn, T.B., Økland, F., Heermann, L., Thorstad, E.B., Teichert, M.A.K., Sæther, S.A., Tam-bets, M. & Borcherding, J. 2018. Downstream migration of Atlantic salmon smolts at Unkelmühle power station and Buisdorf dam in 2016. ...
    • Downstream migration of European eel at three German hydropower stations 

      Økland, Finn; Teichert, Maxim A.K.; Havn, Torgeir B.; Thorstad, Eva B.; Heermann, Lisa; Sæther, Stein Are; Tambets, Meelis; Borcherding, Jost (NINA Report;1355, Research report, 2017)
      Økland, F., Teichert, M.A.K., Havn, T.B., Thorstad, E.B., Heermann, L., Sæther, S.A., Tambets, M. & Borcherding, J. 2017. Downstream migration of European eel at three German hydropower stations. NINA Report 1355: 53 pages, ...
    • Downstream migration success of Atlantic salmon smolts in River Tana, 2021 

      Gjelland, Karl Øystein; Johansen, Narve Stubbraaten; Orell, Panu; Kytökorpi, Mikko; Grønmo, Sire; Holter, Tobias (NINA Report;2396, Research report, 2024)
      Rapporten publiseres 2. april.
    • Downstream migration success of Atlantic salmon smolts in River Tana, 2021 

      Gjelland, Karl Øystein; Johansen, Narve Stubbraaten; Orell, Panu; Kytökorpi, Mikko; Grønmo, Sire; Holter, Tobias (NINA Report;2396, Research report, 2024)
      Gjelland, K.Ø., Johansen, N.S., Orell, P., Kytokörpi, M., Grønmo, S. & Holter, T. 2024. Downstream migration success of Atlantic salmon smolts in River Tana, 2021. NINA Report 2396. Norwegian Institute for Nature Research. ...
    • Downstream transport and seasonal variation in freshwater pearl mussel (Margaritifera margaritifera) eDNA concentration 

      Wacker, Sebastian; Fossøy, Frode; Larsen, Bjørn Mejdell; Brandsegg, Hege; Sivertsgård, Rolf; Karlsson, Sten (Peer reviewed; Journal article, 2019)
      Environmental DNA (eDNA) can be used to detect the presence and abundance of aquatic organisms from water samples. Before implementing this methodology as a tool for monitoring, more knowledge is needed on variation in ...
    • Dragehode Dracocephalum ruyschiana. Forslag til overvåkingsopplegg 

      Evju, Marianne; Skarpaas, Olav; Stabbetorp, Odd (NINA Kortrapport;37, Research report, 2016)
      Evju, M., Skarpaas, O. og Stabbetorp, O. (2016). Dragehode Dracocephalum ruyschiana. Forslag til overvåkingsopplegg. - NINA Kortrapport 37. 30 s. Dragehode Dracocephalum ruyschiana er en prioritert art med egen forskrift ...
    • Drivers of hibernation in the brown bear 

      Evans, Alina; Singh, Navinder J.; Friebe, Andrea; Arnemo, Jon Martin; Laske, Timothy; Fröbert, O.; Swenson, Jon; Blanc, S (Journal article; Peer reviewed, 2016)
      Background: Hibernation has been a key area of research for several decades, essentially in small mammals in the laboratory, yet we know very little about what triggers or ends it in the wild. Do climatic factors, an ...
    • Drivers of hibernation in the brown bear 

      Evans, Alina; Singh, N.J.; Arnemo, Jon Martin; Laske, T.G.; Fröbert, O.; Swenson, Jon; Blanc, S. (Peer reviewed; Journal article, 2016)
      Background: Hibernation has been a key area of research for several decades, essentially in small mammals in the laboratory, yet we know very little about what triggers or ends it in the wild. Do climatic factors, an ...
    • Drivers of species composition in arable-weed communities of the Austrian–Hungarian borderland region: What is the role of the country? 

      Pinke, Gyula; Vér, András; Réder, Krisztina; Koltai, Gábor; Schlögl, Gerhard; Bede-Fazekas, Ákos; Czúcz, Bálint; Botta-Dukát, Zoltán (Peer reviewed; Journal article, 2024)
      Questions: Due to their high ecological and agronomical variability, borderland re -gions offer an excellent opportunity to study assembly patterns. In this study we compared the influence of various factors on summer ...
    • Drivers of treeline shift in different European mountains 

      Cudlin, Pavel; Klopcic, Matija; Tognetti, Roberto; Mális, Frantisek; Alados, Concepcion L.; Bebi, Peter; Grunewald, Karsten; Zhiyanski, Miglena; Andonowski, Vlatko; La Porta, Nicola; Bratanova-Doncheva, Svetlana; Kachaunova, Eli; Edwards-Jonášová, Magda; Ninot, Josep Maria; Rigling, Andreas; Hofgaard, Annika; Hlásny, Tomáš; Skalák, Petr; Wielgolaski, Frans Emil (Journal article; Peer reviewed, 2017)
      A growing body of evidence suggests that processes of upward treeline expansion and shifts in vegetation zones may occur in response to climate change. However, such shifts can be limited by a variety of non-climatic ...
    • Dynamics of gastro-inestinal strongyle parasites in a group of translocated, wild-captured asiatic wild asses in Kazakhstan 

      Gliga, Diana S.; Petrova, Natalia; Linnell, John Durrus; Salemgareyev, Albert R.; Zuther, Steffen; Walzer, Chris; Kaczensky, Petra (Peer reviewed; Journal article, 2020)
      Asiatic wild ass (Kulan, Equus hemionus) population range and numbers became severely reduced and a reintroduction project is currently aiming to re-establish a population in the Central Steppe of Kazakhstan. Pre-emptive ...
    • The dynamics of habitat use in the saimonid genera Coregonus and Salvelinus: ontogenetic niche shifts and polymorphism 

      Sandlund, Odd Terje (Doctoral thesis, 1991)
      SYNOPSIS OF RESULTS Ontogenetic niche shifts Papers I, II, III, IV, VIII, and IX show that both vendace, whitefish and Arctic charr perform ontogenetic niche shifts. All species start their lives in the benthic zone and ...
    • Dyreliv og kraftledninger. Miljø- og forsyningsmessige utfordringer 

      Bevanger, Kjetil; May, Roel; Stokke, Bård (NINA Temahefte;67, Book, 2016-11-07)
      Bevanger, K., May, R. & Stokke, B. 2016. Dyreliv og kraftledninger. Miljø- og forsyningsmessige utfordringer. – NINA Temahefte 67 Forskningsprosjektet Optimal design and routing of power lines; ecological, technical and ...