Blar i NIVA Open Access Archive på forfatter "Poste, Amanda"

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    • Additive Models Reveal Sources of Metals and Organic Pollutants in Norwegian Marine Sediments 

      Everaert, Gert; Ruus, Anders; Hjermann, Dag Øystein; Borgå, Katrine; Green, Norman Whitaker; Boitsov, Stepan; Jensen, Henning; Poste, Amanda (Journal article; Peer reviewed, 2017)
      We characterized spatial patterns of surface sediment concentrations of seven polychlorinated biphenyls (PCBs), seven polycyclic aromatic hydrocarbons (PAHs), three chlorinated pesticides, and five metals in Norwegian ...

    • Amines in surface waters: A survey of Norwegian lakes 

      Poste, Amanda; Grung, Merete; Wright, Richard Frederic (NIVA-rapport;6460, Research report, 2012)
      Amine-based CO2 capture is one of the most promising technologies for emissions reductions from stack gases. In the summer of 2012, we measured the concentrations of amines in 21 Norwegian lakes with the aim of assessing ...

    • The Arctic Nearshore Turbidity Algorithm (ANTA) - A multi sensor turbidity algorithm for Arctic nearshore environments 

      Klein, Konstantin P; Lantuit, Hugues; Heim, Birgit; Doxaran, David; Juhls, Bennet; Nitze, Ingmar; Walch, Daniela; Poste, Amanda; Søreide, Janne (Peer reviewed; Journal article, 2021)
      The Arctic is greatly impacted by climate change. The increase in air temperature drives the thawing of permafrost and an increase in coastal erosion and river discharge. This leads to a greater input of sediment and organic ...

    • Bioaccumulation and biomagnification of mercury in African lakes: The importance of trophic status 

      Poste, Amanda; Muir, Derek C. G.; Guildford, Stephanie J; Hecky, Robert E. (Journal article; Peer reviewed, 2015)
      Despite the global prevalence of both mercury (Hg) contamination and anthropogenic eutrophication, relatively little is known about the behavior of Hg in eutrophic and hypereutrophic systems or the effects of lake trophic ...

    • Ecological Drivers of Mercury Bioaccumulation in Fish of a Subarctic Watercourse 

      Amundsen, Per-Arne; Henriksson, Nina Matilda; Poste, Amanda; Prati, Sebastian; Power, Michael (Peer reviewed; Journal article, 2023)
      Mercury (Hg) is a serious concern for aquatic ecosystems because it may biomagnify to harmful concentrations within food webs and consequently end up in humans that eat fish. However, the trophic transfer of mercury through ...

    • The impact of the spring 2020 snowmelt floods on physicochemical conditions in three Norwegian river-fjord-coastal systems 

      Poste, Amanda; Kaste, Øyvind; Frigstad, Helene; de Wit, Heleen; Harvey, Therese; Valestrand, Louise; Deininger, Anne; Bryntesen, Tina; Delpech, Lisa-Marie; Christensen, Guttorm (NIVA-rapport;7651, Research report, 2021)
      Due to very high snow accumulation in the winter of 2019/2020, the Norwegian Water Resources and Energy Directorate (NVE) in late May 2020 issued flood forecasts predicting extremely high flood risk for parts of northern ...

    • Implications of Coastal Darkening for Contaminant Transport, Bioavailability, and Trophic Transfer in Northern Coastal Waters 

      McGovern, Maeve; Evenset, Anita; Borgå, Katrine; Wit, Heleen de; Braaten, Hans Fredrik Veiteberg; Hessen, Dag Olav; Schultze, Sabrina; Ruus, Anders; Poste, Amanda (Journal article; Peer reviewed, 2019)
      The increased transport of terrestrially derived organic material (tOM) from catchments to rivers and lakes is leading to browning of northern freshwaters.(1) Although the same environmental drivers can be expected to lead ...

    • Improved Environmental Status: 50 Years of Declining Fish Mercury Levels in Boreal and Subarctic Fennoscandia 

      Braaten, Hans Fredrik Veiteberg; Åkerblom, Staffan; Kahilainen, Kimmo Kalevi; Rask, Martti; Vuorenmaa, Jussi; Mannio, Jaakko; Malinen, Tommi; Lydersen, Espen; Poste, Amanda; Amundsen, Per-Arne; Kashulin, Nikolai; Kashulina, Tatiana; Terentjev, Petr; Christensen, Guttorm; de Wit, Heleen (Journal article; Peer reviewed, 2019)
      Temporally (1965–2015) and spatially (55°–70°N) extensive records of total mercury (Hg) in freshwater fish showed consistent declines in boreal and subarctic Fennoscandia. The database contains 54 560 fish entries (n: pike ...

    • Increased light attenuation in Norwegian coastal waters - A literature review 

      Frigstad, Helene; Harvey, E. Therese; Deininger, Anne; Poste, Amanda (NIVA-rapport;7551, Research report, 2020)
      This report describes the results of a literature review on increased light attenuation and biological effects in Norwegian waters and comparable global coastal regions. An overview of research projects on increased light ...

    • Is Glacial Meltwater a Secondary Source of Legacy Contaminants to Arctic Coastal Food Webs? 

      Mcgovern, Maeve; Warner, Nicholas Alexander; Borgå, Katrine; Evenset, Anita; Carlsson, Pernilla Marianne; Skogsberg, Stina Linnea Emelie; Søreide, Janne; Ruus, Anders; Christensen, Guttorm; Poste, Amanda (Peer reviewed; Journal article, 2022)
      Climate change-driven increases in air and sea temperatures are rapidly thawing the Arctic cryosphere with potential for remobilization and accumulation of legacy persistent organic pollutants (POPs) in adjacent coastal ...

    • Is Glacial Meltwater a Secondary Source of Legacy Contaminants to Arctic Coastal Food Webs? 

      Mcgovern, Maeve; Warner, Nicholas Alexander; Borgå, Katrine; Evenset, Anita; Carlsson, Pernilla Marianne; Skogsberg, Stina Linnea Emelie; Søreide, Janne; Ruus, Anders; Christensen, Guttorm; Poste, Amanda (Peer reviewed; Journal article, 2022)
      Climate change-driven increases in air and sea temperatures are rapidly thawing the Arctic cryosphere with potential for remobilization and accumulation of legacy persistent organic pollutants (POPs) in adjacent coastal ...

    • Land-cover, climate and fjord morphology drive differences in organic matter and nutrient dynamics in two contrasting northern river-fjord systems 

      Schultze, Sabrina; Andersen, Tom; Hessen, Dag Olav; Ruus, Anders; Borgå, Katrine; Poste, Amanda (Peer reviewed; Journal article, 2022)
      Climate and land-use changes are leading to impacts on individual ecosystems as well as shifts in transfer dynamics between interconnected systems. At the land-ocean interface, changes in riverine inputs of organic matter ...

    • Measuring amines in Norwegian surface waters 

      Poste, Amanda; Grung, Merete; Wright, Richard Frederic (NIVA-rapport;6781, Research report, 2015)
      In summer 2012 we carried out a survey of amine concentrations in 21 Norwegian lakes with the aim of assessing the prevalence of amines in Norwegian lakes and identifying the main factors affecting concentrations of 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 ...

    • The Norwegian river monitoring programme 2020 – water quality status and trends 

      Kaste, Øyvind; Gundersen, Cathrine Brecke; Poste, Amanda; Sample, James Edward; Hjermann, Dag Øystein (NIVA-rapport;7738-2022, Research report, 2022)
      In the Norwegian River Monitoring Programme (in Norwegian: Elveovervåkingsprogrammet) 20 rivers along the Norwegian coastline are monitored for chemical and hydrological parameters. It is a continuation of the RID programme ...

    • The Norwegian river monitoring programme 2021 – water quality status and trends 

      Kaste, Øyvind; Gundersen, Cathrine Brecke; Sample, James Edward; Hjermann, Dag Øystein; Skancke, Liv Bente; Allan, Ian; Jenssen, Marthe Torunn Solhaug; Bæk, Kine; Poste, Amanda (NIVA-rapport;7760-2022, Research report, 2022)
      In the Norwegian River Monitoring Programme (in Norwegian: Elveovervåkingsprogrammet) 20 rivers along the Norwegian coast are monitored for physical and chemical parameters. This report presents the current status (2021) ...

    • Past and present mercury accumulation in the Lake Baikal seal: Temporal trends, effects of life history, and toxicological implications 

      Poste, Amanda; Pastukhov, Mikhail V.; Braaten, Hans Fredrik Veiteberg; Ozersky, Ted; Moore, Marianne (Journal article; Peer reviewed, 2018)
      Despite global efforts to reduce anthropogenic mercury (Hg) emissions, the timescale and degree to which Hg concentrations in the environment and biota respond to decreased emissions remain challenging to assess or predict. ...

    • Seasonal pollutant levels in littoral high-Arctic amphipods in relation to food sources and terrestrial run-off 

      Skogsberg, Stina Linnea Emelie; Mcgovern, Maeve; Poste, Amanda; Jonsson, Sofi; Arts, Michael T.; Varpe, Øystein; Borgå, Katrine (Peer reviewed; Journal article, 2022)
      Increasing terrestrial run-off from melting glaciers and thawing permafrost to Arctic coastal areas is expected to facilitate re-mobilization of stored legacy persistent organic pollutants (POPs) and mercury (Hg), potentially ...

    • Small watersheds may play a disproportionate role in arctic land-ocean fluxes 

      Vonk, J.E.; Speetjens, N.J.; Poste, Amanda (Peer reviewed; Journal article, 2023)
      While over 99% of coastal arctic rivers drain small catchments, future projections of landocean fluxes are based on data from large rivers. We encourage inclusion of and increased focus on smaller catchments to support ...

    • Spatio-Temporal Variability of Suspended Particulate Matter in a High-Arctic Estuary (Adventfjorden, Svalbard) Using Sentinel-2 Time-Series 

      Walch, Daniela M. R.; Singh, Rakesh K.; Søreide, Janne E.; Lantuit, Hugues; Poste, Amanda (Peer reviewed; Journal article, 2022)
      Arctic coasts, which feature land-ocean transport of freshwater, sediments, and other terrestrial material, are impacted by climate change, including increased temperatures, melting glaciers, changes in precipitation and ...