Browsing Brage by Document Types "Journal article"
Now showing items 21-40 of 71
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An Event-Based Approach to Explore Selected Present and Future Atmospheric River–Induced Floods in Western Norway
(Journal article, 2020)The aim of this study is to investigate extreme precipitation events caused by atmospheric rivers and compare their flood impact in a warmer climate to current climate using an event-based storyline approach. The study was ... -
An experimental test of the genetic component of the ontogenetic habitat shift in Arctic charr (Salvelinus alpinus)
(Journal article, 1998)Fry of the Arctic charr, Salvelinus alpinus, were experimentally stocked into a small fish-free lake to test the hypothesis that the size-dependent habitat shift from the epibenthic to the pelagic habitat is genetically ... -
Ferskvannsressurser og fiskeoppdrett
(Journal article, 2000)Fiskeoppdrett i storskala er blitt en viktig næring i Norge. Omfanget av små fiskeoppdrettsanlegg har mer lokal interesse selvom de anses å kunne være en viktig binæring i distriktene. Disse må imidlertid også behandles ... -
Geographic variation and temporal trends in ice phenology in Norwegian lakes during the period 1890–2020
(Journal article, 2021)Observations from 1890 to 2020 of ice phenology for 101 Norwegian lakes were used to detect variation in ice phenology. The average date of ice break-up occurred later in spring with increasing elevation, latitude and ... -
Geographic variation and temporal trends in ice phenology in Norwegian lakes over a century
(Journal article, 2020)Observations from 1890 to 2020 of ice phenology for 101 Norwegian lakes were used to detect variation in ice phenology. The average date of ice break-up occurred later in spring with increasing altitude, latitude and ... -
Glacier change in Norway since the 1960s – an overview of mass balance, area, length and surface elevation changes
(Journal article, 2020)In this paper, we give an overview of changes in area, length, surface elevation and mass balance of glaciers in mainland Norway since the 1960s. Frontal advances have been recorded in all regions except the northernmost ... -
A global perspective on the application of riverine macroinvertebrates as biological indicators in Africa, South-Central America, Mexico and Southern Asia
(Journal article, 2021)The aim of this study is to generate a first global overview of pressures and methods used to assess the environmental quality of rivers and streams using macroinvertebrates. In total, 314 peer-review studies were reviewed, ... -
Hydrologic effects of land and water management in North America and Asia: 1700–1992
(Journal article, 2006)The hydrologic effects of land use changes, dams, and irrigation in North America and Asia over the past 300 years are studied using a macroscale hydrologic model. The simulation results indicate that the expansion of ... -
Hydropower-driven thermal changes, biological responses and mitigating measures in northern river systems
(Journal article, 2019)Water temperatures control life histories and diversity of aquatic species. Hydropower regulation, particularly in high head systems, alters natural water temperature regimes, which may have profound and long-term impacts ... -
Impacts of hydrological model calibration on projected hydrological changes under climate change – a multi-model assessment in three large river basins
(Journal article, 2020)This study aimed to investigate the influence of hydrological model calibration/validation on discharge projections for three large river basins (the Rhine, Upper Mississippi and Upper Yellow). Three hydrological models ... -
Ingenmannsland
(Journal article, 2021)Artikkelen tar utgangspunkt i dokumentasjon av norske breer fra 1949 til 1979. Overvåking og måling av isbreer ble initiert basert på potensialet for vannkraft. Fra dag én ble fotografering brukt til dokumentasjon, analyse ... -
Location Is Everything, but Climate Gets a Share: Analyzing Small-Scale Environmental Influences on Breeding Success in the White-Throated Dipper
(Journal article, 2020-10)Ecological and evolutionary effects of environmental variation on wild populations are of particular interest in a changing world. Large-scale environmental indices are classically used as environmental explanatory variables ... -
LOD-tiltak på nedbørsfelt skala; – hva er effekten av regnbed for avløpet i et urbanfelt på Grefsen-Kjelsås i Oslo?
(Journal article, 2020)Vi har testet effekten av LOD tiltak (regnbed) på totalavløpet fra et 0.3 km2 stort nedbørsfelt med ca 500 husstander på Grefsen Kjelsås i Oslo. Ved hjelp av en nyutviklet urbanhydrologisk nedbør-avløpsmodell, DDDUrban, ... -
Long‐term variation in piscivory in a brown trout population: effect of changes in available prey organisms
(Journal article, 2002)The piscivorous behaviour in a brown trout (Salmo trutta L.) population was studied in four discrete periods over seven decades (1917–94) in the hydroelectric reservoir Tunhovdfjord in Norway established in 1919. Piscivorous ... -
Long‐term variation in the population structure of Arctic charr, Salvelinus alpinus, and brown trout, Salmo trutta
(Journal article, 2004)The effects of induced water level fluctuations and introduction of the mysid Mysis relicta Lovén on population structure of brown trout, Salmo trutta L., and Arctic charr, Salvelinus alpinus (L.), were studied during ... -
The macroinvertebrate communities of two contrasting Norwegian glacial rivers in relation to environmental variables
(Journal article, 2001)1. Macroinvertebrate communities in two Norwegian glacial rivers, one in the western fjords (Dalelva) and one in the eastern mountains (Leirungsåi), were investigated during three time periods in 1996 and 1997. 2. Channel ... -
Metoder for å måle vannføring i umålte felt
(Journal article, 2007)Forvaltning og utnyttelse av vannressursene stiller i dag høye krav til robusthet og pålitelighet når det gjelder metoder for beregning av vannføring i umålte felt. Temaet har internasjonalt fokus, og IAHS har tatt initiativet ... -
Modeling the snow depth variability with a high-resolution Lidar data set and nonlinear terrain dependency
(Journal article, 2019)In the mountains of Norway, snow depth (SD) is highly variable due to strong winds and open terrain. To investigate snow conditions on one of Europe's largest mountain plateaus, Hardangervidda, we conducted snow measurement ... -
Modeling the spatial distribution of snow water equivalent, taking into account changes in snow-covered area
(Journal article, 2013)A good estimate of the spatial probability density function (PDF) of snow water equivalent (SWE) provides the mean of the snow reservoir, but also enables modelling of the changes in snow-covered area (SCA), which is crucial ... -
Modelling the spatial variability of snow water equivalent at the catchment scale
(Journal article, 2007)The spatial distribution of snow water equivalent (SWE) is modelled as a two parameter gamma distribution. The parameters of the distribution are dynamical in that they are functions of the number of accumulation and melting ...