Blar i NIVA-rapporter på tittel
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Deposisjon av fosfor i Norge - status, vurdering av behovet for kartlegging og forslag til gjennomføring. Forprosjekt
(NIVA-rapport;4078, Research report, 1999)I Norge blir det idag ikke gjennomført overvåking av atmosfærisk fosfordeposisjon. De koeffisientene som brukes idag er basert på eldre målinger med variabel metodikk. Undersøkelser viser at der nedbørfeltet er lite i ... -
Depth-dependent varation in soft-bottom fauna
(NIVA-rapport;3566, Research report, 1996)Depth is an important variable influencing soft-bottom-fauna communities. Lowest diversities were found at depths shallower than 40 m, probably due to stronger fluctuations in environmental factors. Maximum diversities ... -
Desinfeksjon av avløpsvann fra bedrifter som tilvirker oppdrettsfisk
(NIVA-rapport;3600, Research report, 1997)Arbeidet som rapporteres her er konsentrert om karakterisering av avløpsvann fra tilvirkningsbedrifter for oppdrettsfisk, i første rekke vann fra maskinell filtrering, samt å sammenstille tilgjengelig teknologi som egner ... -
Desinfeksjon av inntaksvann til fiskeforedlingsindustrien Disinfection of supply water to the fish processing industry
(NIVA-rapport;3774, Research report, 1998)Hovedhensikten med rapporten er at den skal kunne tjene som en veileder for fiskeforedlingsbedrifter i spørsmål omkring inntaksvann og hygiene. Det aktuelle lovverket er beskrevet, hvor hygieniske krav til vannkvalitet og ... -
Desinfeksjon av IPNV-infiserte lakseegg med ozon
(NIVA-rapport;5158, Research report, 2006)Prosjektet ble gjennomført i samarbeid med Sjøtroll Havbruk AS, som har ønsket å prøve ut desinfisering av lakserogn med ozon som et mulig alternativ til tradisjonell Buffodine-behandling. Prosjektets hovedmål har vært å ... -
Desinfeksjon av vann i oppdrettsnæringen. Forprosjekt
(NIVA-rapport;1965, Research report, 1987)Dagens kunnskaper innen desinfeksjon av vann i landbasert anlegg ble kartlagt gjennom et litteraturstudium og ved å innhente opplysninger fra oppdrettere og leverandører. 5 ulike metoder (klorering, ozonering, UV-bestråling, ... -
Detaljreguleringsplan for sjøområder i Vats- og Yrkefjorden. Konsekvensutredning. Deltema: marint miljø
(NIVA-rapport;6470, Research report, 2014) -
Detection of macroplastic on beaches using drones and object-based image analysis
(NIVA-rapport;7553, Research report, 2020)This pilot study demonstrates UAV-based image collection being a promising technology for plastic detection in beach zones and we recommend object-based image analysis and UAV-based data collection being further developed ... -
Detektion af miljø-DNA med ‘quantitative Polymerase Chain Reaction’ (qPCR) sammenlignet med ‘droplet digital Polymerase Chain Reaction’ (ddPCR)
(NIVA-rapport;7872-2023, Research report, 2023)Detektion af miljø-DNA (engelsk: ‘environmental DNA’, forkortet: ‘eDNA’) kan gøres med blandt andet qPCR og ddPCR, hvor ddPCR ved detektion af DNA fra virus eller bakterier i human patologiske studier er blevet demonstreret ... -
Determination of flow behavioar and friction factors of sea-water mixed with CaSi-dust
(NIVA-rapport;0185, Research report, 1967) -
Determination of the acute toxicity of mine tailings from Nussir. ASA to the marine alga Skeletonema costatum, the marine copepod Tisbe battagliai and the polychaete Arenicola marina
(NIVA-rapport;6163, Research report, 2011)The acute toxicity of mine tailings from Nussir ASA have been determined. The concentrations of the mine tailings ranged from 100% v/v to 1% v/v and the mine tailings were diluted with a clean reference sediment obtained ... -
Determination of the acute toxicity of process chemicals in mine tailings from Nordic Mining ASA to the marine alga Skeletonema costatum, the marine copepod Tisbe battagliai and the polychaete Arenicola marina
(NIVA-rapport;5898, Research report, 2009)The acute toxicity of process chemicals applied to mine tailings at Nordic Mining ASA have been determined. The concentrations of the process chemicals applied to the sediment ranged from an order of magnitude lower than ... -
Determination of the bioaccumulation and elimination of sucralose in the zebrafish, Danio Rerio
(NIVA-rapport;5865, Research report, 2009)The bioaccumulation and subsequent elimination of sucralose in zebrafish (Danio rerio) was determined using a 48 hour semi static exposure system followed by 48 hours flow through of clean water for the depuration phase. ... -
Determination of the bioaccumulation of sucralose un the freshwater alga, Pseudokirchneriella subcapitata
(NIVA-rapport;5864, Research report, 2009)The bioaccumulation of sucralose in the freshwater alga Pseudokirchneriella subcapitata was determined using a 48 hour static exposure system. Two exposure concentrations (10 and 100 mg/L) plus an appropriate control were ... -
Determination of the bioconcentration faction of sucralose in the crustacean Daphina magna
(NIVA-rapport;5866, Research report, 2009) -
Determining the effects of the discharge effluent from the Karmøy aluminium smelter using an integrated biological effects approach
(NIVA-rapport;7772-2022, Research report, 2022)The report describes a monitoring programme using field transplanted mussels to determine the potential biological effects of the effluent discharge from the Karmøy aluminium smelter operated by Hydro Aluminium in Norway. ... -
Developement of an analytical method for the analysis of methylene-bis-thiocyanate at low level concentrations in water
(NIVA-rapport;3648, Research report, 1997)An analytical method for the low level analysis of methylene-bis-thiocyanate (MBT) in waste water was developed. Prior to the instrumental analysis by HPCL, enrichment of MBT is achieved by solid phase extraction. Among ... -
Developing indices for quality-status classification of marine soft-bottom fauna in Norway
(NIVA-rapport;5208, Research report, 2006)As part of the implementation of the EU Water Frame Directive new multimetric indices are developed to assess the quality status based on marine soft-bottom fauna. In this report, several diversity and sensitivity indices ... -
Development and application of the FAB model to calculate critical loads of S and N for lakes in the Killarney Provincial Park (Ontario, Canada)
(NIVA-rapport;4202, Research report, 2000)In Sudbury, Canada, large reductions in sulfur emissions have resulted in reduced critical load exceedances and partial recovery of many lakes in the Killarney Provincial Park. The First-order Acidity Balance (FAB) model ... -
Development of a Norwegian monitoring program for Macroplastic and Litter
(NIVA-rapport;7798-2022, Research report, 2022)The Norwegian Environment Agency (NEA) aims to strengthen environmental monitoring of macroplastic and litter pollution in Norway. Macroplastic and litter are items above 25 mm. Monitoring of litter in the Northern Fulmar ...