Browsing Brage by Document Types "Journal article"
Now showing items 1-20 of 71
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10 års erfaring med nasjonale laksevassdrag –virker systemet?
(Journal article, 2018)Det er >600 lakseførende vassdrag i Norge; 52 nasjonale laksevassdrag og 29 laksefjorder ble opprettet for å gi utvalgte laksebestander bedre beskyttelse. Ordningen omfatter ca. 75 prosent av den norske villaksressursen, ... -
Anthropogenic impacts on continental surface water fluxes
(Journal article, 2006)Impacts of reservoirs and irrigation water withdrawals on continental surface water fluxes are studied within the framework of the Variable Infiltration Capacity (VIC) model for a part of North America, and for Asia. A ... -
Basin-scale phenology and effects of climate variability on global timing of initial seaward migration of Atlantic salmon (Salmo salar)
(Journal article, 2014)Migrations between different habitats are key events in the lives of many organisms. Such movements involve annually recurring travel over long distances usually triggered by seasonal changes in the environment. Often, the ... -
Changes in snow depth in Norway during the period 1961–2010
(Journal article, 2013)Observed trends in annual maximum snow depth (SD) in Norway are analyzed and examined in the context of changes in winter climate from 1961 until today. Trends are evaluated for the 50-year period (1961–2010) and for three ... -
Colours and maps for communicating natural hazards to users with and without colour vision deficiency
(Journal article, 2022)Natural hazards are often communicated visually using colours and maps. However, users' ability to read and understand these products may be hampered by e.g., colour vision deficiency, potentially rendering the products ... -
Contemporary ocean warming and freshwater conditions are related to later sea age at maturity in Atlantic salmon spawning in Norwegian rivers
(Journal article, 2012)Atlantic salmon populations are reported to be declining throughout its range, raising major management concerns. Variation in adult fish abundance may be due to variation in survival, growth, and timing of life history ... -
DDDUrban, ny urbanhydrologisk modell, – resultater fra SURF-prosjektet
(Journal article, 2020)Økt urbanisering og klimaforandringer etterspør urbanhydrologiske modeller som kan beskrive urban avrenning også for områder med lite målinger. Vi presenterer en parameter gjerrig nedbør-avløps modell, DDDUrban som beskriver ... -
Density of juvenile brown trout and Atlantic salmon in natural and man-natural riverine habitats
(Journal article, 1995)The density of juvenile brown trout (Salmo trutta L.) and Atlantic salmon (Salmon salar L.) was significantly higher along river bank areas protected against erosion than along natural river banks in the River Gaula, Central ... -
Disentangling local from macroenvironmental effects: Quantifying the effect of human encroachments based on historical river catches of anadromous salmonids
(Journal article, 2006)In this paper, we use dynamic factor and intervention analysis to identify and quantify the effect of human encroachments on anadromous salmonid catches in 22 Norwegian rivers over a 128-year period. In particular, we ... -
Divergent trends in anadromous salmonid populations in Norwegian and Scottish rivers
(Journal article, 2009)The Atlantic salmon (Salmo salar) is a charismatic anadromous fish of high conservation and economic value. Concerns have been expressed regarding the long-term viability of fisheries throughout the species’s distributional ... -
Diverging life cycle patterns of two Diamesa species (Diptera, Chironomidae) in High Arctic streams, Svalbard
(Journal article, 2021)The fauna of streams in the High Arctic, dominated by chironomids, is shaped by extreme environmental conditions that represent the physiological limits for benthic invertebrates. Despite their ecological importance, little ... -
Dynamical properties of the spatial distribution of snow
(Journal article, 2003)A simulation exercise has been performed to study the temporal development of snow covered area and the spatial distribution of snow-water equivalent (SWE). Special consideration has been paid to how the properties of the ... -
Ecological condition, biodiversity and major environmental challenges in a tropical river network in the Bago District in South-central Myanmar: First insights to the unknown
(Journal article, 2021)Freshwater ecosystems in the Indo-Burma biodiversity hotspot face immediate threats through habitat loss and species extinction. Systems to monitor ecological status and trends in biodiversity are therefore crucially needed. ... -
Ecological correlates of riverine diatom and macroinvertebrate alpha and beta diversity across Arctic Fennoscandia
(Journal article, 2020-09)Arctic freshwaters support biota adapted to the harsh conditions at these latitudes, but the climate is changing rapidly and so are the underlying environmental filters. Currently, we have limited understanding of broad‐scale ... -
Effects of irrigation on the water and energy balances of the Colorado and Mekong river basins
(Journal article, 2006)An irrigation scheme, based on simulated soil moisture deficit, has been included in the variable infiltration capacity macroscale hydrologic model. Water withdrawals are taken from the nearest river, or, in periods of ... -
Effects of pollution-induced changes in oxygen conditions scaling up from individuals to ecosystems in a tropical river network
(Journal article, 2021)Anthropogenic inputs of nutrients and organic matter are common in tropical lowland rivers while little is known about the pollution-induced changes in oxygen availability and respiratory performance of ectotherms in these ... -
Effects of water discharge and temperature on the seaward migration of anadromous brown trout, Salmo trutta, smolts
(Journal article, 2001)The smolt run of anadromous brown trout (Sulmo trutta) in a Norwegian river was studied for three consecutive years. The main run occurred in a period of 7–10 days in the middle or second half of May. Support was found for ... -
Estimating catchment-scale groundwater dynamics from recession analysis – enhanced constraining of hydrological models
(Journal article, 2016)In this study, we propose a new formulation of subsurface water storage dynamics for use in rainfall–runoff models. Under the assumption of a strong relationship between storage and runoff, the temporal distribution of ... -
Estimating extreme areal precipitation in Norway from a gridded dataset
(Journal article, 2015)To obtain estimates of extreme areal precipitation in Norway, the Norwegian Meteorological Institute currently applies a statistical method that combines measured point precipitation, empirical growth factors, and areal ... -
Evaluation of two new-generation global soil databases for macro-scale hydrological modelling in Norway
(Journal article, 2022)Lack of national soil property maps limits the studies of soil moisture (SM) dynamics in Norway. One alternative is to apply the global soil data as input for macro-scale hydrological modelling, but the quality of these ...