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    • The Impact of Methane Seepage on the Pore-Water Geochemistry across the East Siberian Arctic Shelf 

      Guseva, Natalia; Moiseeva, Yulia; Purgina, Darya; Gershelis, Elena; Yakushev, Evgeniy; Semiletov, Igor (Peer reviewed; Journal article, 2021)
      East Siberian Arctic Shelf, the widest and the shallowest shelf of the World Ocean, covering greater than two million square kilometers, has recently been shown to be a significant modern source of atmospheric methane ...

    • 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 ...

    • Impacts of Air Pollution on Freshwater Acidification under Future Emission Reduction Scenarios; ICP Waters contribution to WGE report (ICP Waters report 108/2011) 

      Wright, Richard F.; Helliwell, Rachel; Hruska, Jakub; Larssen, Thorjørn; Rogora, Michela; Rzychoñ, Dorota; Skjelkvåle, Brit Lisa; Worsztynowicz, Adam (NIVA-rapport;6243, Research report, 2011-11)
      The UNECE Convention on Long-range Transboundary Air Pollution (LRTAP) is currently working on a revision of the Gothenburg protocol. ICP Waters has used the dynamic model MAGIC to evaluate the effects of future deposition ...

    • Impacts of multiple stressors on freshwater biota across spatial scales and ecosystems 

      Birk, Sebastian; Chapman, Daniel; Carvalho, Laurence; Spears, Bryan M.; Andersen, Hans Estrup; Argillier, Christine; Auer, Stefan; Baattrup-Pedersen, Annette; Banin, Lindsay; Beklioğlu, Meryem; Bondar-Kunze, Elisabeth; Borja, Angel; Branco, Paulo; Bucak, Tuba; Buijse, Anthonie D.; Cardoso, Ana Cristina; Couture, Raoul-Marie; Cremona, Fabien; de Zwart, Dick; Feld, Christian K.; Ferreira, M Teresa; Feuchtmayr, Heidrun; Gessner, Mark O.; Gieswein, Alexander; Globevnik, Lidija; Graeber, Daniel; Graf, Wolfram; Gutiérrez-Cánovas, Cayetano; Hanganu, Jenica; Işkın, Uğur; Jarvinen, Marko; Jeppesen, Erik; Kotamäki, Niina; Kuijper, Marijn; Lemm, Jan U; Lu, Shenglan; Solheim, Anne Lyche; Mischke, Ute; Moe, S. Jannicke; Nõges, Peeter; Nõges, Tiina; Ormerod, Steve J; Panagopoulos, Yiannis; Phillips, Geoff; Posthuma, Leo; Pouso, Sarai; Prudhomme, Christel; Rankinen, Katri; Rasmussen, Jes Jessen; Richardson, Jessica; Sagouis, Alban; Santos, Jose Maria; Schäfer, Ralf B; Schinegger, Rafaela; Schmutz, Stefan; Schneider, Susanne Claudia; Schülting, Lisa; Segurado, Pedro; Stefanidis, Kostas; Sures, Bernd; Thackeray, Stephen J.; Turunen, Jarno; Uyarra, María C.; Venohr, Markus; von der Ohe, Peter Carsten; Willby, Nigel; Hering, Daniel (Peer reviewed; Journal article, 2020)
      Climate and land-use change drive a suite of stressors that shape ecosystems and interact to yield complex ecological responses (that is, additive, antagonistic and synergistic effects). We know little about the spatial ...

    • Impacts of Riverine Floods on Morphodynamics in the Yellow River Delta 

      Fu, Yutao; Bellerby, Richard; Ji, Hongyu; Chen, Shenliang; Fan, Yaoshen; Li, Peng (Peer reviewed; Journal article, 2023)
      The geomorphological stability and ecological environment of megadeltas worldwide are of vital importance for their sustainable development. Deltaic hydro-morphodynamics is extremely sensitive to high riverine flow due to ...

    • Impacts of salmon lice on mortality, marine migration distance and premature return in sea trout 

      Serra Llinares, Rosa Maria; Bøhn, Thomas; Karlsen, Ørjan; Nilsen, Rune; Freitas, Carla; Albretsen, Jon; Haraldstad, Tormod; Thorstad, Eva Bonsak; Elvik, Kristine Marit Schrøder; Bjørn, Pål Arne (Peer reviewed; Journal article, 2020)
      Brown trout Salmo trutta (L.) is a facultative anadromous species, where a portion of individuals in populations with access to the sea perform migrations to use the richer feeding resources. We investigated the effect of ...

    • Impacts of water residence time on nitrogen budget of lakes and reservoirs 

      Tong, Yindong; Li, Jiaqi; Qi, Miao; Zhang, Xiaoyang; Wang, Mengzhu; Liu, Xueyan; Zhang, Wei; Wang, Xuejun; Lu, Yiren; Lin, Yan (Journal article; Peer reviewed, 2019)
      As an important factor related to the self-purification capacity (e.g. denitrification, burial rate, and downstream output) in aquatic systems, water residence time (WRT) has great impacts on the nitrogen (N) dynamics and ...

    • Impaired benthic macrofauna function 4 years after sediment capping with activated carbon in the Grenland fjords, Norway 

      Raymond, Caroline; Samuelsson, Göran S.; Agrenius, Stefan; Schaanning, Morten T; Gunnarsson, Jonas S. (Peer reviewed; Journal article, 2021)
      The sediments in the Grenland fjords in southern Norway are heavily contaminated by large emissions of dioxins and mercury from historic industrial activities. As a possible in situ remediation option, thin-layer sediment ...

    • IMPASSE – Impacts of microplastic in agrosystems and stream environments 

      Nizzetto, Luca; Andreu, Rico; Van Gestel, Kees; Selonen, Saila; Crossman, Jill; Futter, Martyn; Kokalj, Anita Jemec (NIVA-rapport;7632, Research report, 2021)
      We found that the application of biosolids from sewage sludge represents an important source of microplastics (MP) to agricultural soils. Soils that received more biosolid treatments in the past exhibit higher levels of ...

    • Implementation of the Urban Waste Water Treatment Directive in Norway - An Evaluation of the Norwegian Approach regarding Wastewater Treatment 

      Källqvist, T.; Molvær, J.; Oug, E.; Berge, D.; Tjomsland, T.; Stene-Johansen, S. (NIVA-rapport;4466, Research report, 2002)
      This report discusses the effects and benefits of full implementation of the Urban Waste Water Treatment Directive in Norway. The Norwegian policy for wastewater treatment has targeted phosphorus removal as the primary ...

    • Implementing the Minamata Convention on Mercury: Will China Deliver? 

      Heggelund, Gørild; Rosendal, G. Kristin; Andresen, Steinar E; Steindal, Eirik Hovland; Lin, Yan; Wang, Shuxiao; Zhang, Haibin (Peer reviewed; Journal article, 2022)
      China has undertaken a major shift in its position on mercury as an environmental problem over the last decade and a half. It ratified the Minamata Convention (MC) in 2016 and by doing so has committed to implement the ...

    • 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 ...

    • Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study - an elemental mass balance approach 

      Czerny, Jan; Schulz, Kai G.; Boxhammer, Tim; Bellerby, Richard; Büdenbender, Jan; Engel, Anja; Krug, Sebastian A.; Ludwig, Andrea; Nachtigall, Kerstin; Nondal, Gisle; Niehoff, Barbara; Silyakova, Anna; Riebesell, Ulf (Journal article; Peer reviewed, 2013)
      Recent studies on the impacts of ocean acidification on pelagic communities have identified changes in carbon to nutrient dynamics with related shifts in elemental stoichiometry. In principle, mesocosm experiments provide ...

    • The importance of aquatic macrophytes in a eutrophic tropical shallow lake 

      Swe, Thida; Lombardo, Paola; Ballot, Andreas; Thrane, Jan-Erik; Sample, James; Eriksen, Tor Erik; Mjelde, Marit (Peer reviewed; Journal article, 2021)
      Inlay Lake is the second largest natural lake in Myanmar. Located in Shan State, in the eastern part of the country, it is a known biodiversity hotspot. The lake is negatively affected by an increasing local human population ...

    • Importance of phosphorus for terrestrial and aquatic retention of nitrogen and acidity reduction - a literature study 

      Kaste, Ø.; Lyche, A.; Wright, R.; Brandrud, T.E.; Lindstrøm, E.-A.; Skiple, A.; Bakke, R.; Kommedal, R. (NIVA-rapport;3817, Research report, 1998)
      Many catchments in high N-deposition areas have low N retention. It has been hypothesised that under such conditions P addition may increase N retention in both terrestrial and aquatic ecosystems. Fertiliser trials in ...

    • Importance of wave and current exposure to fauna communities in Laminaria hyperborea kelp forest 

      Norderhaug, Kjell Magnus; Christie, Hartvig C; Rinde, Eli; Gundersen, Hege; Bekkby, Trine (Journal article; Peer reviewed, 2014)
      Hydrodynamic forces from waves and currents may have strong but different impacts on benthic diversity. In order to study the relative importance of current and wave exposure to the diversity of macrofauna associated with ...

    • Imposex og nivåer av organotinn hos populasjoner av purpursnegl (Nucella lapillus) i Norge. (Imposex and levels of organotinn in populations of Nucella lapillus in Norway.) 

      Walday, M.; Berge, J.A.; Følsvik, N. (NIVA-rapport;3665, Research report, 1997)
      Tributyltinn (TBT) brukes bl.a. som begroingshindrende tilsetning i skipsmaling og har vist seg meget giftig overfor en rekke arter av snegl og muslinger. I Norge er det siden 1989 forbudt å bruke TBT-holdig bunnstoff på ...

    • 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 ...

    • Improvement in municipal wastewater treatment alters lake nitrogen to phosphorus ratios in populated regions 

      Tong, Yindong; Wang, Mengzhu; Peñuelas, Josep; Liu, Xueyan; Paerl, Hans W.; Elser, James J.; Sardans, Jordi; Couture, Raoul-Marie; Larssen, Thorjørn; Hu, Hongying; Dong, Xin; He, Wei; Zhang, Wei; Wang, Xuejun; Zhang, Yang; Liu, Yi; Zeng, Siyu; Kong, Xiangzhen; Janssen, Annette B.G.; Lin, Yan (Peer reviewed; Journal article, 2020)
      Large-scale and rapid improvement in wastewater treatment is common practice in developing countries, yet this influence on nutrient regimes in receiving waterbodies is rarely examined at broad spatial and temporal scales. ...

    • Improvement of aquaculture management practice by integration of hydrodynamic modelling 

      Urke, H.A.; Daae, K.; Viljugrein, H.; Kandal, I.; Staalstrøm, A.; Jansen, P.A. (Peer reviewed; Journal article, 2021)
      Aquaculture has grown to become an important export industry in Norway. The Norwegian Food Safety Authorithy (NFSA) is responsible for the management of the production zones designated to aquaculture. Fish diseases and ...