Browsing NIVA Open Access Archive by Title

Now showing items 3362-3381 of 8166

    • Membrane supported biofilm reactors, a litterature review 

      Hem, L.; Catsivilas, F. (NIVA-rapport;3573, Research report, 1996)
      Membrane supported biofilm reactor is a new technology for biological degredation of pollutants. The utilisation of mebranes as a support for biofilm growth may occure in treatment of several types of wastewater, as removing ...

    • MENGDE OG SAMMENSETNING AV KOMMUNALT SLAM. KARTLEGGING AV FORHOLDENE I NORGE I 1973 OG 1983 

      Paulsrud, B. (NIVA-rapport;0586, Research report, 1974)
      GRUNNLAGSMATERIALE ANGÅENDE SLAM BEARBEIDET PÅ GRUNNLAG AV SPØRRESKJEMAER TIL LANDETS KOMMUNER. INNHOLD AV ORGANISK STOFF, FOSFOR, NITROGEN OG TUNGMETALLER I SLAM. TABELLER OVER SLAMMENGDER OG SLAMVOLUMER I NORGE I 1973 ...

    • Mengdemessig utvikling av algebegroing etter kalking - årsaker og effekter. Års- og datarapport for 1998, 1999 og 2000 

      Lindstrøm, E.-A.; Johansen, S. (NIVA-rapport;4451, Research report, 2001)
      Prosjektet "Mengdemessig utvikling av algebegroing etter kalking - årsaker og effekter" ble initiert etter at det gjennom flere år var observert uforklarlig mye trådformede alger i mange vassdrag, både kalkede og ukalkede, ...

    • Meråker gruvefelt - Vurdering av vannføring og forurensning 

      Arnesen, R.T.; Iversen, E. (NIVA-rapport;4304, Research report, 2000)
      De omfattende reguleringene av vassdragene i Meråker gruvefelt påvirker vannkvaliteten i deler av vassdragene i betydelig grad. Det er spesielt i nedre deler av Torsbjørka og i Stjørdalselva mellom Grønbergdammen og tilløpet ...

    • Mercury and Water Quality Study. Impact of Gold Mining in Song Bung 4 Project Area, Central Vietnam 

      Berge, D.; Nam Thai, P.; Son Kiem, N. (NIVA-rapport;5283, Research report, 2007)
      The aim of this study is to elucidate any impact that the mining activity in the catchment of Song Bung River has on the water quality, sediment quality, as well as for the fish and the fish flesh quality in the mainstream ...

    • Mercury concentration trend as a possible result of changes in cod population demography 

      Ruus, Anders; Hjermann, Dag Øystein; Beylich, Bjørnar; Schøyen, Merete; Øxnevad, Sigurd; Green, Norman Whitaker (Journal article; Peer reviewed, 2017)
      Mercury (Hg) in Atlantic cod (Gadus morhua) is one of many parameters that are monitored through OSPAR's Joint Assessment and Monitoring Programme. Time series for cod in the Inner Oslofjord (Norway) go back to 1984. Until ...

    • Mercury in air and soil on an urban-rural transect in East Africa 

      Nipen, Maja; Jørgensen, Susanne Jøntvedt; Bohlin-Nizzetto, Pernilla; Borgå, Katrine; Breivik, Knut; Mmochi, Aviti J; Mwakalapa, Eliezer; Quant, M. Isabel; Schlabach, Martin; Vogt, Rolf David; Wania, Frank (Peer reviewed; Journal article, 2022)
      There are large knowledge gaps concerning concentrations, sources, emissions, and spatial trends of mercury (Hg) in the atmosphere in developing regions of the Southern Hemisphere, particularly in urban areas. Filling these ...

    • Mercury in fish from Norwegian lakes: The complex influence of aqueous organic carbon 

      Braaten, Hans Fredrik Veiteberg; de Wit, Heleen; Larssen, Thorjørn; Poste, Amanda (Journal article; Peer reviewed, 2018)
      Mercury (Hg) concentrations in water and biota are often positively correlated to organic matter (OM), typically measured as total or dissolved organic carbon (TOC/DOC). However, recent evidence suggests that higher OM ...

    • Mercury in terrestrial mosses in the vicinity of tne Norgips plant at Tørkop 

      Rognerud, S.; Fjeld, E. (NIVA-rapport;5212, Research report, 2006)
      The Norgips plasterboard plant at Tørkop in Vestfold County, Norway, are now using industrial gypsum as a raw material in their production. This is a by-product from the cleaning of flue-gases from coal power plants. ...

    • Mercury in the Barents region – River fluxes, sources, and environmental concentrations 

      Gundersen, Cathrine Brecke; Yakushev, Evgeniy; Terentjev, Petr; Kashulin, Nikolai; Korobov, Vladimir; Frolova, Natalia; Romanov, Alexander; Jermilova, Una; Lokhov, Alexey; Miskevich, Igor; Kotova, Ekaterina; Steindal, Eirik Hovland; Braaten, Hans Fredrik Veiteberg (Peer reviewed; Journal article, 2023)
      Arctic rivers are receiving increased attention for their contributing of mercury (Hg) to the Arctic Ocean. Despite this, the knowledge on both the terrestrial release sources and the levels of Hg in the rivers are limited. ...

    • Mercury in the submerged macrophytes Potamogeton crispus and Chara virgate from the brackish, industrial affected Gunneklevfjorden, southern Norway 

      Olsen, Marianne; Sørensen, Cecilie; Lydersen, Espen (Journal article; Peer reviewed, 2016)
      Kvikksølv i krustjønnaks Potamogeton crispus og kransalgen Chara virgate i Gunneklevfjorden, en industripåvirket brakkvannsfjord i Norge. Total kvikksølv (Tot-Hg) og metylkvikksølv (Met-Hg) ble analysert månedlig fra mai ...

    • Mercury isotope analysis of sediments from Gunneklevfjorden – Method evaluation and a preliminary investigation of sources 

      Braaten, Hans Fredrik Veiteberg; Johnson, Nathan W; Clayer, Francois; Beylich, Bjørnar; Håvardstun, Jarle; Schaanning, Morten; Olsen, Marianne (NIVA-rapport;7417, Research report, 2019)
      Gunneklevfjorden in south Norway is an aquatic system where the pollution history includes decades of local industry releases and emissions. An accurate estimate of the importance of ongoing and historic sources is critical ...

    • Mercury Risk Evaluation, Risk Management and Risk Reduction Measures in the Arctic (ARCRISK) – Inception Report 

      Gundersen, Cathrine Brecke; Braaten, Hans Fredrik Veiteberg; Steindal, Eirik Hovland; Moe, S. Jannicke; Yakushev, Evgeniy; Christensen, Guttorm; Kirk, Jane; Hintelmann, Holger; Frolova, Natalia; Terentjev, Petr; Roberts, Sarah (NIVA-rapport;7489, Research report, 2020)
      The project “Risk evaluation, risk reduction and risk management action plans for mercury in the Arctic – a circumpolar management approach” (ARCRISK) has been developed to address mercury pollution in the Arctic. The main ...

    • Mercury–Organic Matter Interactions in Soils and Sediments: Angel or Devil? 

      He, Mei; Tian, Lei; Braaten, Hans Fredrik Veiteberg; Wu, Qingru; Luo, Jie; Cai, Li-Mei; Meng, Jiang-Hui; Lin, Yan (Journal article; Peer reviewed, 2019)
      Many studies have suggested that organic matter (OM) substantially reduces the bioavailability and risks of mercury (Hg) in soils and sediments; however, recent reports have supported that OM greatly accelerates Hg methylation ...

    • MERLIN model applied to NITREX Gårdsjön 

      Kjønnaas, O.; Wright, R.; Cosby, J.B. (NIVA-rapport;3696, Research report, 1997)
      A new process-oriented dynamic model, MERLIN, has been tested on a nitroen-manipulated catchment at Gårdsjön, Sweden, to elucidate the time aspects of nitrogen "saturation". The model is calibrated to the period 1930-90 ...

    • Mesocosm study with thermally treated (TCC) and water-based drill cuttings (WBM) 

      Trannum, Hilde Cecilie; Schaanning, Morten; Johansen, Joachim; Moodley, Leon; Westerlund, Stig; Baussant, Thierry (NIVA-rapport;7033, Research report, 2016)
      Mesocosm and bottle slurry experiments were conducted to assess and compare the effects of thermally treated cuttings (TCC) versus cuttings with water-based mud (WBM) on benthic communities. While WBM has been discharged ...

    • Mesokosmos-forsøk med avgang fra Titania - effekt på bløtbunnsfauna 

      Trannum, Hilde Cecilie; Schaanning, Morten (NIVA-rapport;7223, Research report, 2017)
      Det er utført et mesokosmos-forsøk med gruveavgang fra Titania A/S, og den foreliggende rapporten har til hensikt å vurdere effekter på bløtbunnsfaunaen. Tilsetting av 2 cm avgangsmasser ga en betydelig reduksjon i tettheten ...

    • Meta-analysis of multidecadal biodiversity trends in Europe 

      Pilotto, Francesca; Kühn, Ingolf; Adrian, Rita; Alber, Renate; Alignier, Audrey; Andrews, Christopher; Bäck, Jaana; Barbaro, Luc; Beaumont, Deborah; Beenaerts, Natalie; Benham, Sue; Boukal, David S.; Bretagnolle, Vincent; Camatti, Elisa; Canullo, Roberto; Cardoso, Patricia G.; Ens, Bruno J.; Everaert, Gert; Evtimova, Vesela; Feuchtmayr, Heidrun; García-González, Ricardo; Gómez-García, Daniel; Grandin, Ulf; Gutowski, Jerzy M.; Hadar, Liat; Halada, Lubos; Halassy, Melinda; Hummel, Herman; Huttunen, Kaisa-Leena; Jaroszewicz, Bogdan; Jensen, Thomas C; Kalivoda, Henrik; Schmidt, Inger Kappel; Kröncke, Ingrid; Leinonen, Reima; Martinho, Filipe; Meesenburg, Henning; Meyer, Julia; Minerbi, Stefano; Monteith, Don; Nikolov, Boris P.; Oro, Daniel; Ozoliņš, Dāvis; Padedda, Bachisio M.; Pallett, Denise; Pansera, Marco; Pardal, Miguel Ângelo; Petriccione, Bruno; Pipan, Tanja; Pöyry, Juha; Schäfer, Stefanie M.; Schaub, Marcus; Schneider, Susanne C; Skuja, Agnija; Soetaert, Karline; Springe, Gunta; Stanchev, Radoslav; Stockan, Jenni A.; Stoll, Stefan; Sundqvist, Lisa; Thimonier, Anne; Van Hoey, Gert; Van Ryckegem, Gunther; Visser, Marcel E.; Vorhauser, Samuel; Haase, Peter (Peer reviewed; Journal article, 2020)
      Local biodiversity trends over time are likely to be decoupled from global trends, as local processes may compensate or counteract global change. We analyze 161 long-term biological time series (15–91 years) collected ...

    • Metabolism Modeling in Rivers With Unsteady Flow Conditions and Transient Storage Zones 

      Pathak, Devanshi; Demars, Benoît Olivier Laurent (Peer reviewed; Journal article, 2023)
      Whole-stream metabolism characterizes energy and carbon transformations, thus providing an estimate of the food base and CO2 emission sources from streams and rivers. Metabolism models are generally implemented with a ...

    • Metaller i blæretang fra Glommas munningsområde 2008 

      Berge, J. (NIVA-rapport;5781, Research report, 2009)
      Kronos Titan AS (KT) gjennomfører et overvåkingsprogram i resipienten utenfor bedriften. Bakgrunnen for programmet er bedriftens utslipp av prosessavløpsvann til Glommas munningsområde. Hovedutslippene går ut på ca 6 m dyp ...