Heleen de Wit

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Brukernavn
Besøksadresse Blindernveien 31 Kristine Bonnevies Hus 0371 Oslo
Postadresse Postboks 1066, Blindern 0316 Oslo

Publikasjoner

  • Forsius, Martin; Posch, Maximilian; Holmberg, Maria; Vuorenmaa, Jussi; Kleemola, Sirpa; Augustaitis, Algirdas; Beudert, Burkhard; Bochenek, Witold; Clarke, Nicholas; de Wit, Heleen; Dirnböck, Thomas; Frey, Jane; Grandin, Ulf; Hakola, Hannele; Kobler, Johannes; Krám, Pavel; Lindroos, Antti-Jussi; Ukonmaanaho, Liisa; Valinia, Salar & Váňa, Milan (2021). Assessing critical load exceedances and ecosystem impacts of anthropogenic nitrogen and sulphur deposition at unmanaged forested catchments in Europe. Science of the Total Environment.  ISSN 0048-9697.  753 . doi: 10.1016/j.scitotenv.2020.141791 Vis sammendrag
  • Bishop, Kevin; Shanley, James B.; Riscassi, Ami; de Wit, Heleen; Eklöf, Karin; Meng, Bo; Mitchell, Carl; Osterwalder, Stefan; Schuster, Paul F.; Webster, Jackson & Zhu, Wei (2020). Recent advances in understanding and measurement of mercury in the environment: Terrestrial Hg cycling. Science of the Total Environment.  ISSN 0048-9697.  721 . doi: 10.1016/j.scitotenv.2020.137647 Fulltekst i vitenarkiv. Vis sammendrag
  • Braaten, Hans Fredrik Veiteberg; Lindholm, Markus & de Wit, Heleen A (2020). Five decades of declining methylmercury concentrations in boreal foodwebs suggest pivotal role for sulphate deposition. Science of the Total Environment.  ISSN 0048-9697.  714 . doi: 10.1016/j.scitotenv.2020.136774 Fulltekst i vitenarkiv. Vis sammendrag
  • de Wit, Heleen A; Lepistö, Ahti; Marttila, Hannu; Wenng, Hannah; Bechmann, Marianne; Blicher-Mathiesen, Gitte; Eklöf, Karin; Futter, Martyn N.; Kortelainen, Pirkko; Kronvang, Brian; Kyllmar, Katarina & Rakovic, Jelena (2020). Land-use dominates climate controls on nitrogen and phosphorus export from managed and natural Nordic headwater catchments. Hydrological Processes.  ISSN 0885-6087.  34(25), s 4831- 4850 . doi: 10.1002/hyp.13939 Fulltekst i vitenarkiv. Vis sammendrag
  • Kaste, Øyvind; Austnes, Kari & de Wit, Heleen (2020). Streamwater responses to reduced nitrogen deposition at four small upland catchments in Norway. Ambio.  ISSN 0044-7447.  49, s 1759- 1770 . doi: 10.1007/s13280-020-01347-3 Fulltekst i vitenarkiv. Vis sammendrag
  • Marttila, Hannu; Lepistö, Ahti; Tolvanen, Anne; Bechmann, Marianne; Kyllmar, Katarina; Juutinen, Artti; Wenng, Hannah; Skarbøvik, Eva; Futter, Martyn; Kortelainen, Pirkko; Rankinen, Katri; Hellsten, Seppo; Kløve, Bjørn; Kronvang, Brian; Kaste, Øyvind; Solheim, Anne Lyche; Bhattacharjee, Joy; Rakovic, Jelena & de Wit, Heleen (2020). Potential impacts of a future Nordic bioeconomy on surface water quality. Ambio.  ISSN 0044-7447.  49, s 1722- 1735 . doi: 10.1007/s13280-020-01355-3 Fulltekst i vitenarkiv. Vis sammendrag
  • Strand, Line Tau; Fjellstad, Wendy; Jackson-Blake, Leah Amber & de Wit, Heleen A (2020). Afforestation of a pasture in Norway did not result in higher soil carbon, 50 years after planting. Landscape and Urban Planning.  ISSN 0169-2046.  207 . doi: 10.1016/j.landurbplan.2020.104007 Fulltekst i vitenarkiv. Vis sammendrag
  • 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, Nicholas; Kashulina, Tatiana; Terentyev, Petr; Christensen, Guttorm & de Wit, Heleen (2019). Improved Environmental Status: 50 Years of Declining Fish Mercury Levels in Boreal and Subarctic Fennoscandia. Environmental Science and Technology.  ISSN 0013-936X.  53(4), s 1834- 1843 . doi: 10.1021/acs.est.8b06399 Fulltekst i vitenarkiv. Vis sammendrag
  • Hagman, Camilla Hedlund Corneliussen; Skjelbred, Birger; Thrane, Jan-Erik; Andersen, Tom & de Wit, Heleen A (2019). Growth responses of the nuisance algae Gonyostomum semen (Raphidophyceae) to DOC and associated alterations of light quality and quantity. Aquatic Microbial Ecology.  ISSN 0948-3055.  82(3), s 241- 251 . doi: 10.3354/ame01894 Fulltekst i vitenarkiv. Vis sammendrag
  • Krzeminski, Pawel; Vogelsang, Christian; Meyn, Thomas; Köhler, Stephan; Poutanen, Heikki; de Wit, Heleen & Uhl, Wolfgang (2019). Natural organic matter fractions and their removal in full-scale drinking water treatment under cold climate conditions in Nordic capitals. Journal of Environmental Management.  ISSN 0301-4797.  241, s 427- 438 . doi: 10.1016/j.jenvman.2019.02.024 Fulltekst i vitenarkiv. Vis sammendrag
  • Weyhenmeyer, Gesa A; Hartmann, Jens; Hessen, Dag O; Kopáček, Jiří; Hejzlar, Josef; Jacquet, Stéphan; Hamilton, Stephen K; Verburg, Piet; Leach, Taylor H; Schmid, Martin; Flaim, Giovanna; Nõges, Tiina; Nõges, Peeter; Wentzky, Valerie C; Rogora, Michela; Rusak, James A; Kosten, Sarian; Paterson, Andrew M; Teubner, Katrin; Higgins, Scott N; Lawrence, Gregory; Kangur, Külli; Kokorite, Ilga; Cerasino, Leonardo; Funk, Clara; Harvey, Rebecca; Moatar, Florentina; de Wit, Heleen A & Zechmeister, Thomas (2019). Widespread diminishing anthropogenic effects on calcium in freshwaters. Scientific Reports.  ISSN 2045-2322.  9 . doi: 10.1038/s41598-019-46838-w Fulltekst i vitenarkiv. Vis sammendrag
  • Braaten, Hans Fredrik Veiteberg; de Wit, Heleen; Larssen, Thorjørn & Poste, Amanda (2018). Mercury in fish from Norwegian lakes: The complex influence of aqueous organic carbon. Science of the Total Environment.  ISSN 0048-9697.  627, s 341- 348 . doi: 10.1016/j.scitotenv.2018.01.252 Fulltekst i vitenarkiv. Vis sammendrag
  • de Wit, Heleen A; Couture, Raoul-Marie; Jackson-Blake, Leah; Futter, Martyn N.; Valinia, Salar; Austnes, Kari; Guerrero, Jose-Luis & Lin, Yan (2018). Pipes or chimneys? For carbon cycling in small boreal lakes, precipitation matters most. Limnology and Oceanography Letters.  ISSN 2378-2242.  3(3), s 275- 284 . doi: 10.1002/lol2.10077 Fulltekst i vitenarkiv.
  • Lund, Espen; Garmo, Øyvind A; de Wit, Heleen A; Kristensen, Torstein; Hawley, Kate L & Wright, Richard F (2018). Reduced Acid Deposition Leads to a New Start for Brown Trout (Salmo trutta) in an Acidified Lake in Southern Norway. Water, Air and Soil Pollution.  ISSN 0049-6979.  229 . doi: 10.1007/s11270-018-4013-9 Fulltekst i vitenarkiv.
  • Vuorenmaa, Jussi; Augustaitis, Algirdas; Beudert, Burkhard; Bochenek, Witold; Clarke, Nicholas; de Wit, Heleen A; Dirnböck, Thomas; Frey, Jane; Hakola, Hannele; Kleemola, Sirpa; Kobler, Johannes; Krám, Pavel; Lindroos, Antti-Jussi; Lundin, Lars; Löfgren, Stefan; Marchetto, Aldo; Pecka, Tomasz; Schulte-Bisping, Hubert; Skotak, Krzysztof; Srybny, Anatoly; Szpikowski, Józef; Ukonmaanaho, Liisa; Váňa, Milan; Åkerblom, Staffan & Forsius, Martin (2018). Long-term changes (1990–2015) in the atmospheric deposition and runoff water chemistry of sulphate, inorganic nitrogen and acidity for forested catchments in Europe in relation to changes in emissions and hydrometeorological conditions. Science of the Total Environment.  ISSN 0048-9697.  625, s 1129- 1145 . doi: 10.1016/j.scitotenv.2017.12.245 Fulltekst i vitenarkiv. Vis sammendrag
  • Vuorenmaa, Jussi; Augustaitis, Algirdas; Beudert, Burkhard; Clarke, Nicholas; de Wit, Heleen; Dirnböck, Thomas; Frey, Jane; Forsius, Martin; Indriksone, Iveta; Kleemola, Sirpa; Kobler, Johannes; Kram, Pavel; Lindroos, Antti-Jussi; Lundin, Lars; Ruoho-Airola, Tuija; Ukonmaanaho, Liisa & Vána, Milan (2017). Long-term sulphate and inorganic nitrogen mass balance budgets in European ICP Integrated Monitoring catchments (1990–2012). Ecological Indicators.  ISSN 1470-160X.  76, s 15- 29 . doi: 10.1016/j.ecolind.2016.12.040 Vis sammendrag
  • Braaten, Hans Fredrik Veiteberg & de Wit, Heleen A. (2016). Effects of disturbance and vegetation type on total and methylmercury in boreal peatland and forest soils. Environmental Pollution (1987).  ISSN 0269-7491.  218, s 140- 149 . doi: 10.1016/j.envpol.2016.08.029 Fulltekst i vitenarkiv.
  • de Wit, Heleen A.; Valinia, Salar; Weyhenmeyer, Gesa A; Futter, Martyn N.; Kortelainen, Pirkko; Austnes, Kari; Hessen, Dag O; Raike, Antti; Laudon, Hjalmar & Vournenmaa, Jussi (2016). Current Browning of Surface Waters Will Be Further Promoted by Wetter Climate. Environmental Science and Technology Letters (ES&T Letters).  ISSN 2328-8930.  3(12), s 430- 435 . doi: 10.1021/acs.estlett.6b00396 Fulltekst i vitenarkiv.
  • de Wit, Heleen A; Ledesma, Jose L J & Futter, Martyn N. (2016). Aquatic DOC export from subarctic Atlantic blanket bog in Norway is controlled by seasalt deposition, temperature and precipitation. Biogeochemistry.  ISSN 0168-2563.  127(2), s 305- 321 . doi: 10.1007/s10533-016-0182-z Fulltekst i vitenarkiv.
  • Finstad, Anders Gravbrøt; Andersen, Tom; Larsen, Søren; Tominaga, Koji; Blumentrath, Stefan; de Wit, Heleen A.; Tømmervik, Hans & Hessen, Dag Olav (2016). From greening to browning: Catchment vegetation development and reduced S-deposition promote organic carbon load on decadal time scales in Nordic lakes. Scientific Reports.  ISSN 2045-2322.  6 . doi: 10.1038/srep31944 Fulltekst i vitenarkiv. Vis sammendrag
  • Strand, Line Tau; Callesen, Ingeborg; Dalsgaard, Lise & de Wit, Heleen A (2016). Carbon and nitrogen stocks in Norwegian forest soils — the importance of soil formation, climate, and vegetation type for organic matter accumulation. Canadian Journal of Forest Research.  ISSN 0045-5067.  46(12), s 1459- 1473 . doi: 10.1139/cjfr-2015-0467
  • Couture, Raoul-Marie; de Wit, Heleen; Tominaga, Koji; Kiuru, Petri & Markelov, Igor (2015). Oxygen dynamics in a boreal lake responds to long-term changes in climate, ice phenology, and DOC inputs. Journal of Geophysical Research (JGR): Biogeosciences.  ISSN 2169-8953.  120(11), s 2441- 2456 . doi: 10.1002/2015JG003065 Fulltekst i vitenarkiv.
  • de Wit, Heleen; Austnes, Kari; Hylen, Gro & Dalsgaard, Lise (2015). A carbon balance of Norway: terrestrial and aquatic carbon fluxes. Biogeochemistry.  ISSN 0168-2563.  123, s 147- 173 . doi: 10.1007/s10533-014-0060-5 Fulltekst i vitenarkiv.
  • Moiseenko, Tatiana Ivanovna; Dinu, Marina Ivanovna; Bazova, Maria Mihailovna & de Wit, Heleen (2015). Long-term changes in the water chemistry of arctic lakes as a response to reduction of air pollution: Case study in the Kola, Russia. Water, Air and Soil Pollution.  ISSN 0049-6979.  226(98) . doi: 10.1007/s11270-015-2310-0
  • Poste, Amanda; Braaten, Hans Fredrik Veiteberg; de Wit, Heleen; Sørensen, Kai & Larssen, Thorjørn (2015). Effects of photodemethylation on the methylmercury budget of boreal Norwegian lakes. Environmental Toxicology and Chemistry.  ISSN 0730-7268.  34(6), s 1213- 1223 . doi: 10.1002/etc.2923
  • Vries, Wim de; Posch, Maximilian; Sverdrup, Harald U.; Larssen, Thorjørn; Wit, Heleen de; Bobbink, Roland & Hettelingh, Jean-Paul (2015). Geochemical Indicators for Use in the Computation of Critical Loads and Dynamic Risk Assessments. Environmental Pollution.  ISSN 1566-0745.  25, s 15- 58 . doi: 10.1007/978-94-017-9508-1_2
  • Braaten, Hans Fredrik Veiteberg; de Wit, Heleen; Fjeld, Eirik; Rognerud, Sigurd; Lydersen, Espen & Larssen, Thorjørn (2014). Environmental factors influencing mercury speciation in Subarctic and Boreal lakes. Science of the Total Environment.  ISSN 0048-9697.  476-477(April), s 336- 345 . doi: 10.1016/j.scitotenv.2014.01.030 Fulltekst i vitenarkiv.
  • Braaten, Hans Fredrik Veiteberg; de Wit, Heleen; Harman, Christopher Peter; Hageström, Ulla & Larssen, Thorjørn (2014). Effects of sample preservation and storage on mercury speciation in natural stream water. International Journal of Environmental Analytical Chemistry.  ISSN 0306-7319.  94(4), s 381- 384 . doi: 10.1080/03067319.2013.823489 Fulltekst i vitenarkiv.
  • de Wit, Heleen; Granhus, Aksel; Lindholm, Markus; Kainz, Martin J.; Lin, Yan; Braaten, Hans Fredrik Veiteberg & Blaszczak, Joanna (2014). Forest harvest effects on mercury in streams and biota in Norwegian boreal catchments. Forest Ecology and Management.  ISSN 0378-1127.  324, s 52- 63 . doi: 10.1016/j.foreco.2014.03.044 Fulltekst i vitenarkiv.
  • Garmo, Øyvind Aaberg; Skjelkvåle, Brit Lisa; de Wit, Heleen; Colombo, Luca; Curtis, Chris; Fölster, Jens; Hoffmann, Andreas; Hruška, Jakub; Høgåsen, Tore; Jeffries, Dean S.; Keller, W. Bill; Krám, Pavel; Majer, Vladimir; Monteith, Don T.; Paterson, Andrew M.; Rogora, Michela; Rzychon, Dorota; Steingruber, Sandra; Stoddard, John L.; Vuorenmaa, Jussi & Worsztynowicz, Adam (2014). Trends in surface water chemistry in acidified areas in Europe and North America from 1990 to 2008. Water, Air and Soil Pollution.  ISSN 0049-6979.  225(3), s 1- 14 . doi: 10.1007/s11270-014-1880-6 Fulltekst i vitenarkiv.
  • Lindholm, Markus; de Wit, Heleen; Eriksen, Tor Erik & Braaten, Hans Fredrik Veiteberg (2014). The influence of littoral on mercury bioaccumulation in a humic lake. Water, Air and Soil Pollution.  ISSN 0049-6979.  225(10) . doi: 10.1007/s11270-014-2141-4
  • de Wit, Heleen; Bryn, Anders; Hofgaard, Annika; Karstensen, Jonas; Kvalevåg, Maria Malene & Peters, Glen Philip (2013). Climate warming feedback from mountain birch forest expansion: Reduced albedo dominates carbon uptake. Global Change Biology.  ISSN 1354-1013.  20(7), s 2344- 2355 . doi: 10.1111/gcb.12483 Fulltekst i vitenarkiv. Vis sammendrag
  • Holmberg, Maria; Vuorenmaa, Jussi; Posch, Maximilian; Forsius, Martin; Lundin, Lars; Kleemola, Sirpa; Augustaitis, Algirdas; Beudert, Burkhard; de Wit, Heleen; Dirnböck, Thomas; Evans, Christopher D.; Frey, Jane; Grandin, Ulf; Indriksone, Iveta; Krám, Pavel; Pompei, Enrico; Schulte-Bisping, Hubert; Srybny, Anatoly & Vána, Milan (2013). Relationship between critical load exceedances and empirical impact indicators at Integrated Monitoring sites across Europe. Ecological Indicators.  ISSN 1470-160X.  24, s 256- 265 . doi: 10.1016/j.ecolind.2012.06.013 Vis sammendrag
  • Martinsen, Vegard; Grund, Franz; Kjeve, Marit Ness; de Wit, Heleen; Austrheim, Gunnar; Mysterud, Atle & Mulder, Jan (2013). Differences in the quality of seepage water and runoff caused by plant community and grazing at an Alpine site in Hol, southern Norway. Water, Air and Soil Pollution.  ISSN 0049-6979.  224 . doi: 10.1007/s11270-013-1649-3
  • de Wit, Heleen; Kainz, Martin J. & Lindholm, Markus (2012). Methylmercury bioaccumulation in invertebrates of boreal streams in Norway: Effects of aqueous methylmercury and diet retention. Environmental Pollution (1987).  ISSN 0269-7491.  164, s 235- 241 . doi: 10.1016/j.envpol.2012.01.041
  • de Wit, Heleen; Eldhuset, Toril & Mulder, Jan (2010). Dissolved Al reduces Mg uptake in Norway spruce forest: Results from a long-term field manipulation experiment in Norway. Forest Ecology and Management.  ISSN 0378-1127.  259(10), s 2072- 2082 . doi: 10.1016/j.foreco.2010.02.018 Vis sammendrag
  • Godsey, Sarah E.; Aas, Wenche; Clair, Thomas A.; de Wit, Heleen; Fernandez, Ivan A.; Kahl, J. Steve; Malcolm, Iain A.; Neal, Colin; Neil, Margaret; Nelson, Sarah J.; Norton, Stephen A.; Palucis, Marisa C.; Monsen, Brit Lisa Skjelkvåle; Soulsby, Chris; Tetzlaff, Doerthe & Kirchner, James W. (2010). Generality of fractal 1/f scaling in catchment tracer time series, and its implications for catchment travel time distributions. Hydrological Processes.  ISSN 0885-6087.  24(12), s 1660- 1671 . doi: 10.1002/hyp.7677
  • Wright, Richard Frederic; Aherne, Julian; Bishop, Kevin; Dillon, Peter J.; Erlandsson, Martin; Evans, Chris D.; Forsius, Martin; Hardekopf, David W.; Helliwell, Rachel C.; Hruška, Jakub; Hutchins, Mike; Kaste, Øyvind; Kopácek, Jirí; Krám, Pavel; Laudon, Hjalmar; Moldan, Filip; Rogora, Michela; Smelhus, Anne M & de Wit, Heleen (2010). Interaction of Climate Change and Acid Deposition, In Martin Kernan; Richard W. Battarbee & Brian R. Moss (ed.),  Climate Change Impacts on Freshwater Ecosystems.  Wiley-Blackwell.  ISBN 978-1-4051-7913-3.  7.  s 152 - 180
  • Hessen, Dag Olav; Andersen, Tom; Larsen, Søren; Skjelkvåle, Brit Lisa & Wit, Heleen A. de (2009). Nitrogen deposition, catchment productivity, and climate as determinants of lake stoichiometry. Limnology and Oceanography.  ISSN 0024-3590.  54(6), s 2520- 2528
  • Larssen, Thorjørn; de Wit, Helene; Wiker, Marianne & Halse, Kine (2008). Mercury budget of a small forested boreal catchment in southeast Norway. Science of the Total Environment.  ISSN 0048-9697.  404(2-3), s 290- 296 . doi: 10.1016/j.scitotenv.2008.03.013
  • Børja, Isabella; de Wit, Heleen; Steffenrem, Arne & Majdi, Hooshang (2008). Stand age and fine root biomass, distribution and morphology in a Norway spruce chronosequence in southeast Norway. Tree Physiology.  ISSN 0829-318X.  28(5), s 773- 784 . doi: 10.1093/treephys/28.5.773
  • Stuanes, Arne O.; de Wit, Heleen; Hole, Lars R; Kaste, Øyvind; Mulder, Jan; Riise, Gunnhild & Wright, Richard Frederic (2008). Effect of climate change on flux of N and C: Air-land-freshwater-marine links: Synthesis. Ambio.  ISSN 0044-7447.  37(1), s 2- 8 . doi: 10.1579/0044-7447(2008)37[2:EOCCOF]2.0.CO;2 Vis sammendrag
  • de Wit, Heleen A.; Mulder, Jan; Hindar, Atle & Hole, Lars R. (2007). Long-term increase in dissolved organic carbon in streamwaters in Norway is response to reduced acid deposition. Environmental Science and Technology.  ISSN 0013-936X.  41(22), s 7706- 7713 Vis sammendrag
  • Fjellheim, Arne & de Wit, Heleen (2006). Trends in biological recovery of acidified surface waters in Europe. Recovery of biota in acidified surface waters: a synthesis, In  ICP-WATERS Report.  Norwegian Institute for Water Research, NIVA.  Kapittel.  s 47 - 51

Se alle arbeider i Cristin

  • Garmo, Øyvind Aaberg; Kaste, Øyvind; Arle, Jens; Austnes, Kari; de Wit, Heleen; Fölster, Jens; Houle, Daniel; Hruska, Jakub; Indriksone, Iveta; Monteith, Don; Rogora, Michaela; Sample, James Edward; Steingruber, Sandra; Stoddard, John L.; Talkop, Reet; Trodd, Wayne; Ulańczyk, Rafał Piotr & Vuorenmaa, Jussi (2020). Trends and patterns in surface water chemistry in Europe and North America between 1990 and 2016, with particular focus on changes in land use as a confounding factor for recovery. NIVA-rapport. 7479. Fulltekst i vitenarkiv. Vis sammendrag
  • Thrane, Jan-Erik; de Wit, Heleen; Blakseth, Tomas Adler; Skancke, Liv Bente & Garmo, Øyvind Aaberg (2020). Correcting for bias in freshwater total nitrogen concentrations obtained with a modified standard (NS4743) method. NIVA-rapport. 7538. Fulltekst i vitenarkiv. Vis sammendrag
  • Thrane, Jan-Erik; Persson, Jonas; Kile, Maia Røst; Bækkelie, Knut Andreas Eikland; Myrvold, Knut Marius; Garmo, Øyvind Aaberg; Grung, Merete; Guerrero, Jose-Luis; de Wit, Heleen & Moe, Therese Fosholt (2020). Overvåking av referanseelver 2019. Basisovervåking i henhold til vannforskriften.. NIVA-rapport. 7485. Vis sammendrag
  • de Wit, Heleen (2019). Klimaendring og vannkvalitet. Kjemisk vannkvalitet – hva kan vi vente oss?.
  • de Wit, Heleen (2019). Progress report ICP Waters. Vis sammendrag
  • de Wit, Heleen; Braaten, Hans Fredrik Veiteberg; Gundersen, Cathrine Brecke; Krzeminski, Pawel & Vogt, Rolf David (2019). Long-term Mercury records in a boreal lake: lake Processing and the role of organic matter.
  • Gundersen, Cathrine Brecke; Krzeminski, Pawel; Martinez-Frances, Elena; Ong, Stevenson Harvey Lee; Færgestad, Eline Mosleth; Braaten, Hans Fredrik Veiteberg; Vogt, Rolf David & de Wit, Heleen (2019). In-Lake Processing Influences DOM Biodegradability and Hg-cycling.
  • McGovern, Maeve; Evenset, Anita; Borgå, Katrine; Wit, Heleen de; Braaten, Hans Fredrik Veiteberg; Hessen, Dag Olav; Schultze, Sabrina; Ruus, Anders & Poste, Amanda (2019). Implications of Coastal Darkening for Contaminant Transport, Bioavailability, and Trophic Transfer in Northern Coastal Waters. Environmental Science and Technology.  ISSN 0013-936X.  53(13), s 7180- 7182 . doi: 10.1021/acs.est.9b03093 Fulltekst i vitenarkiv. Vis sammendrag
  • Moe, Therese Fosholt; Persson, Jonas; Bækkelie, Knut Andreas Eikland; Myrvold, Knut Marius; Garmo, Øyvind Aaberg; Grung, Merete; Hindar, Atle; Guerrero Calidonio, Jose-Luis & de Wit, Heleen (2019). Overvåking av referanseelver 2018. Basisovervåking i henhold til vannforskriften. NIVA-rapport. 7378. Fulltekst i vitenarkiv. Vis sammendrag
  • Austnes, Kari; Aherne, Julian; Arle, Jens; Čičendajeva, Marina; Couture, Suzanne; Fölster, Jens; Garmo, Øyvind Aaberg; Hruska, Jakub; Monteith, Don; Posch, Max; Rogora, Michaela; Sample, James Edward; Skjelkvåle, Brit Lisa; Steingruber, Sandra; Stoddard, John L.; Ulańczyk, Rafał; Van Dam, Herman; Velasco, Manuel Toro; Vuorenmaa, Jussi; Wright, Richard Frederic & de Wit, Heleen (2018). Regional assessment of the current extent of acidification of surface waters in Europe and North America. NIVA-rapport. 7268. Fulltekst i vitenarkiv. Vis sammendrag
  • Braaten, Hans Fredrik Veiteberg; Gundersen, Cathrine Brecke; Sample, James Edward; Selvik, John Rune & de Wit, Heleen (2018). Atmospheric deposition and lateral transport of mercury in Norwegian drainage basins: A mercury budget for Norway. NIVA-rapport. 7310. Fulltekst i vitenarkiv. Vis sammendrag
  • Braaten, Hans Fredrik Veiteberg; Åkerblom, Staffan; de Wit, Heleen; Poste, Amanda; Rask, Martti; Vuorenmaa, Jussi; Kahilainen, Kimmo Kalevi & Malinen, Tommi (2018). Mercury in freshwater fish from Fennoscandia (1965-2015) - temporal trends and potential environmental drivers.
  • de Wit, Heleen (2018). Will an effective policy to reduce Hg emissions lead to cleaner rivers and lakes?.
  • de Wit, Heleen; Braaten, Hans Fredrik Veiteberg & Lund, Espen (2018). The role of dissolved organic matter in boreal lake mercury cycling.
  • de Wit, Heleen; Couture, Raoul-Marie; Futter, Martin N; Vogt, Rolf David; Krzeminski, Pawel Konrad; Francés, Elena Martínez; Ong, Stevenson Harvey Lee & Jackson-Blake, Leah Amber (2018). Climate-driven changes in removal of DOC in a small boreal lake: a 30-year time series.
  • Garmo, Øyvind Aaberg; Ulańczyk, Rafał & de Wit, Heleen (ed.) (2018). Proceedings of the 34th Task Force meeting of the ICP Waters Programme in Warsaw, May 7-9, 2018. NIVA-rapport. 7298. Fulltekst i vitenarkiv. Vis sammendrag
  • Krzeminski, Pawel; de Wit, Heleen & Uhl, Wolfgang (2018). Natural organic matter variability and removal in main drinking water treatment plants of Northern European capital cities.
  • Krzeminski, Pawel; Vogelsang, Christian; Meyn, Thomas; Köhler, Stephan; Poutanen, Heikki; de Wit, Heleen & Uhl, Wolfgang (2018). Seasonal changes and removal of NOM fractions in main waterworks of Nordic capital cities.
  • Moe, Therese Fosholt; Thrane, Jan-Erik; Persson, Jonas; Bækkelie, Knut Andreas Eikland; Myrvold, Knut Marius; Olstad, Kjetil; Garmo, Øyvind Aaberg; Grung, Merete & de Wit, Heleen (2018). Overvåking av referanseelver 2017. Basisovervåking i henhold til vannforskriften. NIVA-rapport. 7259. Fulltekst i vitenarkiv. Vis sammendrag
  • Braaten, Hans Fredrik Veiteberg; Åkerblom, Staffan; de Wit, Heleen; Skotte, Gunnar; Rask, Martti; Vuorenmaa, Jussi; Kahilainen, Kimmo K.; Malinen, Tommi; Rognerud, Sigurd; Lydersen, Espen; Amundsen, Per-Arne; Kashulin, Nicholas; Kashulina, Tatiana; Terentyev, Petr; Christensen, Guttorm; Jackson-Blake, Leah Amber; Lund, Espen & Rosseland, Bjørn Olav (2017). Spatial and temporal trends of mercury in freshwater fish in Fennoscandia (1965-2015). NIVA-rapport. 7179. Fulltekst i vitenarkiv. Vis sammendrag
  • Avset, Liv Mildrid Melkild; Braaten, Hans Fredrik Veiteberg; de Wit, Heleen & Åkerblom, Staffan (2017, 09. oktober). Mindre kvikksølv i ferskvannsfisk. [Internett].  forskning.no.
  • Braaten, Hans Fredrik Veiteberg; Lindholm, Markus; Halvorsen, Godtfred A. & de Wit, Heleen (2017). Re-writing history: Five decades of methylmercury concentrations in aquatic zoobenthos from lakes in the Norwegian boreal Ecozone.
  • Braaten, Hans Fredrik Veiteberg; Åkerblom, Staffan; Christensen, Guttorm N; Poste, Amanda; de Wit, Heleen & Jackson-Blake, Leah Amber (2017). Impacts of climate and lake browning on mercury concentrations in fish – an analysis of resampled perch populations in Scandinavia.
  • de Wit, Heleen; Braaten, Hans Fredrik Veiteberg; Krzeminski, Pawel Konrad; Lund, Espen; Martinez-Frances, Elena; Ong, Stevenson Harvey Lee & Vogt, Rolf David (2017). The Role of DOM in Catchment and Lake Mercury Cycling in a Boreal lake catchment.
  • de Wit, Heleen; Braaten, Hans Fredrik Veiteberg & Vogt, Rolf David (2017). The role of DOM in catchment and lake mercury cycling in a boreal lake catchment.
  • Garmo, Øyvind Aaberg; de Wit, Heleen & Fölster, Jens (ed.) (2017). Proceedings of the 33rd Task Force meeting of the ICP Waters Programme in Uppsala, May 9-11, 2017. NIVA-rapport. 7178. Fulltekst i vitenarkiv. Vis sammendrag
  • Martínez, Elena; Vogt, Rolf David & de Wit, Heleen (2017). Biodegradability and Spectroscopic Properties of Dissolved Natural Organic Matter Fractions Linked to Hg and MeHg Transport and Uptake.
  • Åkerblom, Staffan; Braaten, Hans Fredrik Veiteberg; de Wit, Heleen & Christensen, Guttorm (2017). A Fennoscandian platform of freshwater fish mercury data for the evaluation of effects of transboundary air pollution.
  • Borchgrevink, Harald Bonaventura & de Wit, Heleen (2016, 17. desember). Vannet blir brunere i en våtere fremtid. [Internett].  forskning.no.
  • de Wit, Heleen; Valinia, Salar & Steingruber, Sandra (ed.) (2016). Proceedings of the 31st Task Force meeting of the ICP Waters Programme in Monte Verità, Switzerland, October 6-8, 2015. ICP Waters report 126/2016. NIVA-rapport. 7003. Vis sammendrag
  • Valinia, Salar & de Wit, Heleen (ed.) (2016). Proceedings of the 32nd Task Force meeting of the ICP Waters Programme in Asker, Oslo, May 24-26, 2016. NIVA-rapport. 7090. Fulltekst i vitenarkiv. Vis sammendrag
  • Velle, Gaute; Mahlum, Shad Kenneth; Monteith, Don T.; de Wit, Heleen; Arle, Jens; Fjellheim, Arne; Frolova, Marina; Fölster, Jens; Grudule, Natalja; Halvorsen, Godtfred A.; Hildrew, Alan; Hruska, Jakub; Indriksone, Iveta; Kamasova, Lenka; Kopáček, Jiří; Kram, Pavel; Orton, Stuart; Senoo, Takaaki; Shilland, Ewan M.; Stuchlík, Evžen; Telford, Richard J.; Ungermanova, Lenka; Wiklund, Magda-Lena & Wright, Richard F. (2016). Biodiversity of macro-invertebrates in acid-sensitive waters: trends and relations to water chemistry and climate. NIVA-rapport. 7077. Fulltekst i vitenarkiv. Vis sammendrag
  • Couture, Raoul-Marie; de Wit, Heleen; Tominaga, Koji; Kiuru, Petri & Markelov, Igor (2015). Modelling the impact of increasing dissolved organic carbon load on seasonal anoxia in a boreal humic lake.. Vis sammendrag
  • de Wit, Heleen; Hettelingh, Jean-Paul & Harmens, Harry (ed.) (2015). Trends in ecosystem and health responses to long-range transported atmospheric pollutants - ICP Waters report 125/2015. NIVA-rapport. 6946. Fulltekst i vitenarkiv. Vis sammendrag
  • de Wit, Heleen & Wathne, Bente Margrethe (ed.) (2015). Proceedings of the 30th Task Force meeting of the ICP Waters Programme in Grimstad, Norway 14th –16th October, 2014. NIVA-rapport. 6793. Fulltekst i vitenarkiv. Vis sammendrag
  • Fjellheim, Arne; Johannessen, Arne; Landås, Torunn Svanevik & de Wit, Heleen (ed.) (2015). Biological intercalibration. Invertebrates 1915 - ICP Waters report 124/2015. NIVA-rapport. 6940. Fulltekst i vitenarkiv. Vis sammendrag
  • Garmo, Øyvind Aaberg; de Wit, Heleen & Fjellheim, Arne (2015). Chemical and biological recovery in acid-sensitive waters: trends and prognosis (ICP Waters report 119/2015). NIVA-rapport. 6847. Fulltekst i vitenarkiv. Vis sammendrag
  • Hansen, Georg Heinrich; Rasse, Daniel; de Wit, Heleen; Tømmervik, Hans; Bjerke, Jarle W.; Lund, Magnus & Parmentier, Frans-Jan W. (2015). Effects of climate variability on vegetation and carbon uptake in a North-Norwegian coastal wetland. NILU OR (NILU Oppdragsrapport). 40/2015. Fulltekst i vitenarkiv. Vis sammendrag
  • Borchgrevink, Harald Bonaventura & de Wit, Heleen (2014, 15. mai). Acid rain still affects water quality. [Internett].  sciencenordic.com.
  • Borchgrevink, Harald Bonaventura & de Wit, Heleen (2014, 06. mai). Sur nedbør påvirker fortsatt norske elver. [Internett].  forskning.no.
  • de Wit, Heleen; Wathne, Bente Margrethe & Hruska, Jakub (ed.) (2014). Proceedings of the 29th Task Force meeting of the ICP Waters Programme in Český Krumlov, Czech Republic 1st –3rd October, 2013. NIVA-rapport. 6643. Fulltekst i vitenarkiv. Vis sammendrag
  • Fjellheim, Arne; Johannessen, Arne; Landås, Torunn Svanevik & de Wit, Heleen (ed.) (2014). Biological intercalibration: Invertebrates 1713. NIVA-rapport. 6662. Fulltekst i vitenarkiv. Vis sammendrag
  • Fjellheim, Arne; Johannessen, Arne; Landås, Torunn Svanevik & de Wit, Heleen (ed.) (2014). Biological intercalibration: Invertebrates 1814. NIVA-rapport. 6761. Fulltekst i vitenarkiv. Vis sammendrag
  • Framstad, Erik; de Wit, Heleen; Mäkipää, Raisa; Larjavaara, Markku; Vesterdal, Lars & Karltun, Erik (2013). Biodiversity, carbon storage and dynamics of old northern forests. TemaNord. 507.
  • Velle, Gaute; Telford, Richard; Curtis, Chris; Erikson, Lars; Fjellheim, Arne; Frolova, Marina; Fölster, Jens; Grudule, Natalja; Halvorsen, Godtfred A.; Hildrew, Alan; Hoffman, Andreas; Indriksone, Iveta; Kamasova, Lenka; Kopáček, Jiří; Orton, Stuart; Kram, Pavel; Monteith, Don; Senoo, Takaaki; Shilland, Ewan; Stuchlik, Evzen; Wiklund, Magda lena; de Wit, Heleen & Skjelkvåle, Brit Lisa (2013). Biodiversity in freshwaters: temporal trends and response to water chemistry.
  • Gundersen, Hege; Christie, Hartvig C; de Wit, Heleen; Norderhaug, Kjell Magnus; Bekkby, Trine & Walday, Mats (2011). Utredning om CO2-opptak i marine naturtyper. NIVA-rapport. 6070. Vis sammendrag
  • De Wit, Heleen; Pfaffhuber, Katrine Aspmo; Hole, Lars Robert & Berg, Torunn (2010). Inputs and outputs of Hg and MeHg in a catchment perspective.
  • de Wit, Heleen A.; Astrup, Rasmuss; Engen-Skaugen, Torill; Hofgaard, Annika; Peters, Glen & Strand, Line Tau (2009). Terrestrial C sequestration potential in Norway under present and future climate (TerraC).
  • Furnes, Harald; De Wit, M & Robins, Brian (2009). Volcanic evolution of the upper onverwacht suite, Barberton mountain land, south Africa.
  • Lange, Holger; de Wit, Heleen A.; Thomas, Björn; Astrup, Rasmuss; Hylen, Gro & Strand, Line Tau (2009). Modelling forest- soil carbon at a national scale.
  • Stuanes, Arne O.; Austnes, Kari; de Wit, Heleen A.; Haaland, Ståle; Hole, Lars R.; Kaste, Øyvind; Mulder, Jan; Riise, Gunnhild; Strand, Line Tau; Vestgarden, Live Semb & Wright, Richard F. (2007). The CLUE project: Effects of climate change on flux of N and C: air-land-freshwater-marine links.
  • de Wit, Heleen; Raddum, Gunnar; Fjellheim, Arne; Erikson, Lars; Fott, Jan; Halvorsen, Godtfred Anker; Heegaard, Einar; Kohout, L.; Kifinger, B.; Schaumberg, Jochen; Maetze, A.; Zahn, H. & Skjelkvåle, Brit Lisa (ed.) (2007). Trends in surface water chemistry and biota: The importance of confounding factors.
  • Vogt, Rolf David; de Wit, Helene; Seip, Hans Martin & Riise, Gunnhild (2007). Regional Increases in Dissolved Natural Organic Matter linked to decrease in Acid Rain through lower Aluminium levels. Vis sammendrag
  • Rosseland, Bjørn Olav; Hesthagen, Trygve; Wright, Richard; Kroglund, Frode; Kristensen, Torstein; Saksgård, Randi; de Wit, Heleen A. & Skjelkvåle, Brit Lisa (2006). Lake Saudlandsvatn, Southern Norway, a lake under the process of recovery from acidification, In  ICP-WATERS Report.  Norwegian Institute for Water Research, NIVA.  s 33 - 37
  • Rosseland, Bjørn Olav; Rognerud, Sigurd; Collen, Peter; Grimalt, J. O.; Vives, I.; Massabuau, J-C; Lackner, R; Hofer, R; Raddum, Gunnar; Fjellheim, Arne; Harriman, R; Pina, Benjamin; de Wit, Heleen A. & Skjelkvåle, Brit Lisa (2006). The effects of multiple stressors from metals and organic micropollutants on the brown trout in Lochnagar, Scotland, In  ICP-WATERS Report.  Norwegian Institute for Water Research, NIVA.
  • de Wit, Heleen & Skjelkvåle, Brit Lisa (2006). Proceedings of the 21th meeting of the ICP Waters Programme Task Force in Tallinn, Estonia, October 17-19, 2005. NIVA-rapport. 5204.

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Publisert 11. aug. 2020 13:36 - Sist endret 11. aug. 2020 13:36