NORCE Klima og miljø: Nye registreringer
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Behaviour of anadromous brown trout (Salmo trutta) in a hydropower regulated freshwater system
(Peer reviewed; Journal article, 2023)Many Norwegian rivers and lakes are regulated for hydropower, which afects freshwater ecosystems and anadromous fish species, such as sea trout (Salmo trutta). Lakes are an important feature of many anadromous river systems. ... -
Gytefisktelling i Suldalslågen høsten 2023
(LFI - Laboratorium for ferskvannsøkologi og innlandsfiske;, Research report, 2024)Ved drivtelling i Suldalslågen 16.-17. november 2023 ble det registrert 926 laks, fordelt på 210 smålaks, 457 mellomlaks og 259 storlaks, samt 968 aure. Det var mulig å observere merkestatus for 575 laks, hvorav 313 var ... -
The Impact of Fine-Scale Currents on Biogeochemical Cycles in a Changing Ocean
(Peer reviewed, 2023)Fine-scale currents, O(1–100 km, days–months), are actively involved in the transport and transformation of biogeochemical tracers in the ocean. However, their overall impact on large-scale biogeochemical cycling on the ... -
New wine in old bottles: Modification of the Na+/K+-ATPase enzyme activity assay and its application in salmonid aquaculture
(Peer reviewed; Journal article, 2023)The Na+, K+ ATPase (NKA) enzyme is important to generate the transmembrane ion gradient in the gills, intestine, and kidneys, hence, is vital for secondary transport of fluids and different solutes in teleosts. Gill NKA ... -
Utredning av sirkulærøkonomien i sjømatnæringen
(Research report, 2023)Utredningen har fremskaffet et bredt kunnskapsgrunnlag for videre arbeid innen sirkulær økonomi i sjømatnæringen. Arbeidet har identifisert status, kunnskapsbehov, muligheter og utfordringer for at næringen skal nå ... -
Sea Ice-Driven Variability in the Pacific Subantarctic Mode Water Formation Regions
(Peer reviewed; Journal article, 2023)Well-mixed mode waters that form in the north of the Southern Ocean are particularly important to the ocean absorption of heat and CO2 from the atmosphere. Two types of mode water form in the Pacific sector of the Southern ... -
Field report for snorkeling surveys and removal of escaped farmed salmon in 13 rivers in Iceland 2023
(LFI - Laboratorium for ferskvannsøkologi og innlandsfiske;, Research report, 2023)In August 2023, the aquaculture company Arctic Fish (Arctic Sea Farm) reported two small holes in one of its net-pens in Patreksfjörður in the Westfjords, Iceland. The Icelandic Food and Veterinary Authority estimated that ... -
Habitat og tiltak i Aurlandsvassdraget – Statusrapport 2022
(LFI - Laboratorium for ferskvannsøkologi og innlandsfiske, Research report, 2003)I løpet av de siste tiårene, spesielt fra 2010 og fremover, har det blitt gjennomført flere miljøtiltak i Aurlandsvassdraget for å forbedre eller gjenopprette fiskehabitatforholdene. Dette inkluderer tiltak som gytegrusutlegg, ... -
Kartlegging og overvåking av reinbeiter
(Research report, 2023)Denne rapporten beskriver arbeidet med satellittbasert kartlegging av vinterbeite i indre Finnmark. Prosjektet utgjør en ny oppdatering av reinbeitene på Finnmarksvidda og inngår i ”Overvåkingsprogrammet for Indre Finnmark”. ... -
Experimental mining plumes and ocean warming trigger stress in a deep pelagic jellyfish
(Peer reviewed; Journal article, 2023)The deep pelagic ocean is increasingly subjected to human-induced environmental change. While pelagic animals provide important ecosystem functions including climate regulation, species-specific responses to stressors ... -
Structured analysis of broader GMO impacts inspired by technology assessment to inform policy decisions.
(Peer reviewed; Journal article, 2023)If genetically modified organisms (GMOs) are approved in the EU for experimental release or marketing authorization (placing on the market), a risk assessment (RA) is carried out beforehand to determine whether this may ... -
The stability of present-day Antarctic grounding lines - Part 2: Onset of irreversible retreat of Amundsen Sea glaciers under current climate on centennial timescales cannot be excluded
(Peer reviewed; Journal article, 2023)Observations of ocean-driven grounding-line retreat in the Amundsen Sea Embayment in Antarctica raise the question of an imminent collapse of the West Antarctic Ice Sheet. Here we analyse the committed evolution of Antarctic ... -
Nitrogen fixation rates in the Guinea Dome and the equatorial upwelling regions in the Atlantic Ocean
(Peer reviewed; Journal article, 2023)Biological nitrogen fixation is a key process balancing the loss of combined nitrogen in the marine nitrogen cycle. Its relevance in upwelling or high nutrient regions is still unclear, with the few available studies in ... -
Two centuries of southwest Iceland annually-resolved marine temperature reconstructed from Arctica islandica shells
(Peer reviewed; Journal article, 2023)Iceland's exposure to major ocean current pathways of the central North Atlantic makes it a useful location for developing long-term proxy records of past marine climate. Such records provide more detailed understanding ... -
Simulations of ocean deoxygenation in the historical era: insights from forced and coupled models
(Peer reviewed; Journal article, 2023)Ocean deoxygenation due to anthropogenic warming represents a major threat to marine ecosystems and fisheries. Challenges remain in simulating the modern observed changes in the dissolved oxygen (O2). Here, we present an ... -
The stability of present-day Antarctic grounding lines-Part 1: No indication of marine ice sheet instability in the current geometry
(Peer reviewed; Journal article, 2023)Theoretical and numerical work has shown that under certain circumstances grounding lines of marine-type ice sheets can enter phases of irreversible advance and retreat driven by the marine ice sheet instability (MISI). ... -
The Multi-Scale Interactions of Atmospheric Phenomenon in Mean and Extreme Precipitation
(Peer reviewed; Journal article, 2023)Climate change increases the frequency and intensity of extreme precipitation, which in combination with rising population enhances exposure to major floods. An improved understanding of the atmospheric processes that cause ... -
Regional water cycle sensitivity to afforestation: synthetic numerical experiments for tropical Africa
(Peer reviewed; Journal article, 2023)Afforestation as a climate change mitigation option has been the subject of intense debate and study over the last few decades, particularly in the tropics where agricultural activity is expanding. However, the impact of ... -
It's a small world for parasites: evidence supporting the North American invasion of European Echinococcus multilocularis
(Peer reviewed; Journal article, 2023)Echinococcus multilocularis (Em), the causative agent of human alveolar echinococcosis (AE), is present in the Holarctic region, and several genetic variants deem to have differential infectivity and pathogenicity. An ... -
Irreversible loss in marine ecosystem habitability after a temperature overshoot
(Peer reviewed; Journal article, 2023)Anthropogenic warming of the oceans and associated deoxygenation are altering marine ecosystems. Current knowledge suggests these changes may be reversible on a centennial timescale at the ocean surface but irreversible ...