Browsing Publikasjoner fra Cristin - NIVA by Title
Now showing items 1145-1164 of 2149
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Naturlig reetablering av laks i kystvassdrag mellom Otra og Mandalselva dokumentert ved elektrofiske og analyse av miljøDNA
(NIVA-rapport;7671, Research report, 2021)I denne studien har vi dokumentert at laksen er tilbake i mange av kystvassdragene i Agder, og med dagens lave bestandssituasjon er slike reetableringer viktige. Bestandene i kystvassdragene er likevel sårbare, med få ... -
Naturtyper i Gunneklevfjorden. Delrapport fra Aktivitet 1,Beslutningsgrunnlag og tiltaksplan for forurensede sedimenter i Gunneklevfjorden
(NIVA-rapport;6675, Research report, 2014)Aktivitet 1 Naturtyper i Gunneklevfjorden har hatt som målsetning å beskrive naturtyper og økosystem i Gunneklevfjorden som grunnlag for mulig inndeling i delområder for stedsspesifikk og stedstilpasset tiltaksvurdering. ... -
Naturtyper i Saltstraumen marine verneområde
(NIVA-rapport;6841, Research report, 2015)Denne undersøkelsen rapporterer naturverdier i Saltstraumen marine verneområde basert på videoregistreringer langs 30 linjer (transekter). Det ble registrert 15 naturtyper (NiN) i området der hardbunn og særlig fast bunn ... -
The Neonicotinoid Imidacloprid Impairs Learning, Locomotor Activity Levels, and Sucrose Solution Consumption in Bumblebees (Bombus terrestris)
(Peer reviewed; Journal article, 2023)Bumblebees carry out the complex task of foraging to provide for their colonies. They also conduct pollination, an ecosystem service of high importance to both wild plants and entomophilous crops. Insecticides can alter ... -
A Neural Network-Based Analysis of the Seasonal Variability of Surface Total Alkalinity on the East China Sea Shelf
(Peer reviewed; Journal article, 2020)Total alkalinity (AT) is an important variable in the regulation of the seawater carbonate chemistry system, determining the capacity to buffer changes in pH. In the coastal oceans, carbonate system dynamics are controlled ... -
Neuroendocrine indicators of allostatic load reveal the impact of environmental acidification in fish
(Peer reviewed; Journal article, 2020)When mobilized from surrounding soils and binding to gills at moderately low pH, aluminum (Al) cations can adversely affect fish populations. Furthermore, acidification may lead to allostatic overload, a situation in which ... -
Neutralisation of hydrogen peroxide after delousing events; technology development and environmental risk assessment
(NIVA-rapport;7635, Research report, 2021)The present project has conducted experiments in laboratory and pilot scale with chemical neutralisation of hydrogen peroxide, which, in combination with technological treatment pose a possible solution for onboard well ... -
New Approach Methodologies for the Endocrine Activity Toolbox: Environmental Assessment for Fish and Amphibians
(Peer reviewed; Journal article, 2023)Multiple in vivo test guidelines focusing on the estrogen, androgen, thyroid, and steroidogenesis pathways have been developed and validated for mammals, amphibians, or fish. However, these tests are resource-intensive and ... -
New brominated flame retardants and dechlorane plus in the Arctic: Local sources and bioaccumulation potential in marine benthos
(Journal article; Peer reviewed, 2018)The aim of the present study was to investigate the presence and bioaccumulation of new flame retardants (nBFRs), polybrominated diphenyl ethers (PBDEs) and dechlorane plus (DDC-CO) in the marine environment close to an ... -
New insights into submarine tailing disposal for a reduced environmental footprint: Lessons learnt from Norwegian fjords
(Peer reviewed; Journal article, 2022)Submarine tailing disposal (STD) in fjords from land-based mines is common practice in Norway and takes place in other regions worldwide. We synthesize the results of a multidisciplinary programme on environmental impacts ... -
New insights into traditional health risk assessments of mercury exposure: Implications of selenium
(Journal article; Peer reviewed, 2014)There is increasing evidence that selenium (Se) has a significant effect on mercury (Hg) toxicology; however, Hg exposure risk assessments usually consider only the amount of Hg present in the environment or in food. On ... -
New microsatellite loci for the green sea urchin Strongylocentrotus droebachiensis using universal M13 labelled markers
(Journal article; Peer reviewed, 2014) -
New production across the shelf-edge in the northeastern North Sea during the stratified summer period
(Peer reviewed; Journal article, 2020)New production of organic matter from photosynthesis based on “new” nitrate transported into the illuminated surface layer fuels temperate ecosystems during periods of stratification when surface waters are nutrient limited. ... -
Nitrate respiration occurs throughout the depth of mucoid and non-mucoid Pseudomonas aeruginosa submerged agar colony biofilms including the oxic zone
(Peer reviewed; Journal article, 2022)Pseudomonas aeruginosa is an opportunistic pathogen and well characterized biofilm former. P. aeruginosa forms strong oxygen gradients inside biofilms due to rapid oxygen respiration in the top layers and the poor solubility ... -
Nitrogen in surface waters: time trends and geographical patterns explained by deposition levels and catchment characteristics
(NIVA-rapport;7728-2022, Research report, 2022)The report presents a statistical analysis of controls (deposition, land cover, climate) on spatial variability and long-term trends (1992-2016) in surface water concentrations of nitrate (NO3) and carbon to nitrogen (C/N) ... -
Nitrous Oxide Dynamics in the Siberian Arctic Ocean and Vulnerability to Climate Change
(Peer reviewed; Journal article, 2023)Nitrous oxide (N2O) is a strong greenhouse gas and stratospheric ozone-depleting substance. Around 20% of global emissions stem from the ocean, but current estimates and future projections are uncertain due to poor spatial ... -
No additional stress of sublethal gas supersaturation in a landlocked population of Atlantic salmon (Salmo salar) exposed to environmental acidification
(Peer reviewed; Journal article, 2024)The landlocked Atlantic salmon population “bleke” faces extinction due to environmental acidification (EA) and hydropower expansion in the Norwegian river Otra. Despite of restoration, unexpected mortality has been reported ... -
No environmental effect on vaccine-induced reduced growth in Atlantic salmon Salmo salar smolts
(Peer reviewed; Journal article, 2020)Oil-adjuvanted vaccines reduce long-term growth in farmed Atlantic salmon Salmo salar, possibly via an increase in metabolic rate due to the energetic demands of the immune system. We tested this hypothesis by comparing ... -
No evidence of a protective or cumulative negative effect of UV-B on growth inhibition induced by gamma radiation in Scots pine (Pinus sylvestris) seedlings
(Peer reviewed; Journal article, 2019)Exposure to ambient UV-B radiation may prime protective responses towards various stressors in plants, though information about interactive effects of UV-B and gamma radiation is scarce. Here, we aimed to test whether UV-B ... -
Noen enkle utredninger om kompletterende vannforsyning fra Brusdalsvannet, Ålesund kommune
(NIVA-rapport;6706, Research report, 2014)I forbindelse med at Ålesund ønsker å gjøre sin vannforsyning sikrere ved å bygge en ny kompletterende vannforsyning fra Brusdalsvannet (mest mulig uavhengig av den gamle), har NIVA gjort noen enkle vurderinger. Nytt ...