Blar i NIVA Open Access Archive på tittel
Viser treff 1251-1270 av 8170
-
Effects of nitrogen on nutrient-limitation in oligotrophic northern surface waters
(NIVA-rapport;7680, Research report, 2021)Nitrogen deposition has a potentially eutrophying impact on oligotrophic freshwaters. Here we present a data analysis and a literature review with a joint focus on nitrogen (N) limitation in oligotrophic lakes and rivers. ... -
Effects of organic matter addition on methylmercury formation in capped and uncapped marine sediments
(Journal article; Peer reviewed, 2016)In situ subaqueous capping (ISC) of contaminated marine sediments is frequently proposed as a feasible and effective mitigation option. However, though effective in isolating mercury species migration into overlying water, ... -
Effects of petrogenic pollutants on North Atlantic and Arctic Calanus copepods: From molecular mechanisms to population impacts
(Peer reviewed; Journal article, 2023)Oil and gas industries in the Northern Atlantic Ocean have gradually moved closer to the Arctic areas, a process expected to be further facilitated by sea ice withdrawal caused by global warming. Copepods of the genus ... -
Effects of pollution-induced changes in oxygen conditions scaling up from individuals to ecosystems in a tropical river network
(Peer reviewed; 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 Polyester Fibers and Car Tire Particles on Freshwater Invertebrates
(Peer reviewed; Journal article, 2022)Microplastic ingestion has been shown for various organisms, but knowledge of the potential adverse effects on freshwater invertebrates remains limited. We assessed the ingestion capacity and the associated effects of ... -
Effects of repeated short episodes of environmental acidification on Atlantic salmon (Salmo salar) from a landlocked population
(Peer reviewed; Journal article, 2021)Chronic or repeated exposure to environmental contaminants may result in allostatic overload, a physiological situation in which the costs of coping affect long-term survival and reproductive output. Continuous measurements ... -
Effects of sample preparation on methylmercury concentrations in arctic organisms
(Journal article; Peer reviewed, 2014)The biogeochemical cycling of mercury (Hg) in the marine environment is an issue of global concern, as consumption of marine fish is a major route of human exposure to the toxic specie methylmercury (MeHg). The most widely ... -
Effects of sample preservation and storage on mercury speciation in natural stream water
(Journal article; Peer reviewed, 2014)Despite an increasing focus on low level methods for determination of mercury species in water over the last decades, few studies have paid attention to direct effects of different sample preparation methods (i.e. preservation ... -
Effects of simulated environmental discharges of the salmon lice pesticides deltamethrin and azamethiphos on the swimming behaviour and survival of adult Northern shrimp (Pandalus borealis)
(Peer reviewed; Journal article, 2021)Swimming behaviour was investigated in adult egg-carrying northern shrimp (Pandalus borealis) exposed to dilute concentrations of the pesticides Alpha Max® (active ingredient deltamethrin) and Salmosan® (active ingredient ... -
Effects of submarine mine tailings on macrobenthic community structure and ecosystem processes
(Journal article; Peer reviewed, 2018)A mesocosm experiment with intact benthic communities was conducted to evaluate the effects of mine tailings on benthic community structure and biogeochemical processes. Two types of tailings were supplied from process ... -
Effects of water browning on freshwater biodiversity: the case of the predatory phantom midge Chaoborus nyblaei
(Journal article; Peer reviewed, 2018)Water browning, due to increased runoff of terrestrial dissolved organic carbon (DOC), has recently gained considerable attention. While it is well settled how browning affects light regime and thereby aquatic primary ... -
Effects of waterlogging and elevated salinity on the allocation of photosynthetic carbon in estuarine tidal marsh: a mesocosm experiment
(Peer reviewed; Journal article, 2022)Background and aim Coastal marshes and wetlands hosting blue carbon ecosystems have shown vulnerability to sea-level rise (SLR) and its consequent effects. In this study, we explored the effects of waterlogging and elevated ... -
Effects of year-to-year variations in climate on trends in acidification (ICP Waters report 57/2001)
(NIVA-rapport;4328, Research report, 2001-01)Climatic variations potentially mask long-term trends in acidification of surface waters. High inputs of seasalts due to severe storms can cause temporary decreases in ANC. Temperature and moisture may affect nitrate ... -
Effects on Life-History Traits of Hypogastrura viatica (Collembola) Exposed to Imidacloprid Through Soil or Diet
(Peer reviewed; Journal article, 2021)Collembola (springtails) are important members of soil communities worldwide by contributing to degradation of organic matter. In nature, Collembola might be exposed to the neonicotinoid insecticide imidacloprid, which is ... -
Effekt av eksponert og ueksponert sulfidberggrunn på vannkvalitet langs planlagt E18-trasè mellom Lillesand og Kristiansand
(NIVA-rapport;4493, Research report, 2002)I forbindelse med planlegging av OPS-prosjektet E 18 Nørholm-Timeneskrysset ønsket Vegvesenet å få utredet avrenningsproblemene knyttet til sulfidholdig berggrunn. Det er kjent at eksponering til luft av berggrunn med ... -
Effekt av endret værmønster på hygienisk badevannskvalitet og kvalitet på sjømat i Indre Oslofjord
(NIVA-rapport;7031, Research report, 2016)Prosjektet Water Quality Tools ble gjennomført i perioden 2012-2015. Målet med prosjektet var å fremskaffe ny kunnskap, analysemetoder og modellverktøy som kan være til nytte i arbeidet med å sikre god badevannskvalitet ... -
Effekt av sedimentasjonsbasseng for tilbakeholdelse av partikler og PAH-forbindelser i prosessvann fra anodefabrikken til Hydro Aluminium Sunndalsøra
(NIVA-rapport;7048, Research report, 2016)Basert på Hydros egne analyseresultater ble tilbakeholdelsen av PAH16 fra prosessvann fra fabrikken tilført til sedimentasjonsbasseng BWC3, estimert til ca. 75 % (1200 kg) i 2014 og ca. 90 % (ca. 2000 kg) i 2015. PAH-innholdet ... -
Effekter av å passere en kraftverksturbin på smoltoverlevelse og atferd. Betydningen av tiltak
(NIVA-rapport;6139, Research report, 2011)I 2009 døde 11,5 % av smolten som passerte Fosstveit kraftverk via kraftverksturbinen. Forsøkene i 2010 demonstrerte at denne dødeligheten kan reduseres hvis turbinen driftes mer optimalt. Foruten den direkte dødeligheten ... -
Effekter av drikkevannsregulering på økologisk tilstand i Helgeren
(NIVA-rapport;7392, Research report, 2019)I 2018 gjennomførte NIVA biologiske undersøkelser i Helgeren, et regulert drikkevannsmagasin som inngår i Oslos vannforsyning. Målet var å vurdere hvorvidt drikkevannsreguleringen går ut over den økologiske tilstanden i ... -
Effekter av ekstremværet «Hans» på vannkvaliteten i Mjøsa
(NIVA-rapport;7921-2023, Report, 2023)Ekstremværet «Hans» rammet store deler av Sør-Norge i august 2023, og førte til storflom i Gudbrandsdalslågen og rekordhøy vannstand i Mjøsa. Denne rapporten presenterer hvordan ekstremværet påvirket vannkvaliteten i Mjøsa ...