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Heleen de Wit
dr.scient. (PhD)
Stilling: Seniorforsker, ph.d.
Telefon: +47 954 34 360
Seksjon: Nedbørfeltprosesser
Epost: heleen.de.wit(at)niva.no
Heleen de Wit har en PhD (2000) fra Landbruksuniversitet i Ås og har jobbet på NIVA siden 2004. Hun forsker på nedbørfeltprosesser i naturlige økosystemer, i forbindelse med lufttransport forurensing (sur nedbør og kvikksølv). Dette er viktig for forsuring og forurensing av overflatevann, og påvirkes av klimaendring og direkte inngrep i nedbørfeltet som skoghogst. Hun benytter overvåkingsdata fra Norge og andre land for å se på langtidstrender i nitrogen og løst organisk materiale i vann (se www.icp-waters.no). En annen interesse er karbonlagring og utvasking i terrestre økosystemer.
Søk i NIVA-rapporter (1958 - )
Søk i NIVA-publikasjoner (1958 - )

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Vitenskapelige artikler og bokkapitler

  1. Monteith, Donald T.; Henrys, Peter A.; Hruška, Jakub; de Wit, Heleen; Krám, Pavel; Moldan, Filip; Posch, Maximilian; Räike, Antti; Stoddard, John L.; Shilland, Ewan M.; Gloria Pereira, Pereira; Evans, Chris D.; (2023) Long-term rise in riverine dissolved organic carbon concentration is predicted by electrolyte solubility theory. Science Advances ISSN 2375-2548. Vol 9 No3 doi: 10.1126/sciadv.ade3491
  2. de Wit, Heleen; Garmo, Øyvind Aaberg; Jackson-Blake, Leah Amber; Clayer, Francois; Vogt, Rolf David; Austnes, Kari; Kaste, Øyvind; Gundersen, Cathrine Brecke; Guerrerro, J.L; Hindar, Atle; (2023) Changing water chemistry in one thousand Norwegian lakes during three decades of cleaner air and climate change. Global Biogeochemical Cycles ISSN 0886-6236. Vol 37 No2 doi: 10.1029/2022GB007509
  3. Valiente Parra, Nicolas; Eiler, Alexander; Allesson, Lina; Andersen, Tom; Clayer, Francois; Crapart, Camille Marie; Dörsch, Peter; Fontaine, Laurent; Heuschele, Jan David; Vogt, Rolf David; Wei, Jing; de Wit, Heleen; Hessen, Dag Olav; (2022) Catchment properties as predictors of greenhouse gas concentrations across a gradient of boreal lakes. Frontiers in Environmental Science ISSN 2296-665X. Vol 10 doi: 10.3389/fenvs.2022.880619
  4. de Wit, Heleen; Stoddard, John L.; Monteith, Donald T.; Sample, James E.; Austnes, Kari; Couture, Suzanne; Fölster, Jens; Higgins, Scott N.; Houle, Daniel; Hruška, Jakub; Krám, Pavel; Kopáček, Jiří; Paterson, Andrew M.; Valinia, Salar; Van Dam, Herman; Vuorenmaa, Jussi; Evans, Chris D.; (2021) Cleaner air reveals growing influence of climate on dissolved organic carbon trends in northern headwaters. Environmental Research Letters ISSN 1748-9326. Vol 16 No10 doi: 10.1088/1748-9326/ac2526
  5. Clayer, Francois; Thrane, Jan-Erik; Brandt, Uta; Dörsch, Peter; de Wit, Heleen; (2021) Boreal Headwater Catchment as Hot Spot of Carbon Processing From Headwater to Fjord. Journal of Geophysical Research (JGR): Biogeosciences ISSN 2169-8953. Vol 126 No12 doi: 10.1029/2021JG006359
  6. 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; Löfgren, Stefan; Pecka, Tomasz; Rönnback, Pernilla; Skotak, Krzysztof; Szpikowski, Józef; 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. Vol 753 doi: 10.1016/j.scitotenv.2020.141791
  7. 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. Vol 207 doi: 10.1016/j.landurbplan.2020.104007
  8. 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. Vol 49 s1722-1735 doi: 10.1007/s13280-020-01355-3
  9. 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. Vol 34 No25 s4831-4850 doi: 10.1002/hyp.13939
  10. 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. Vol 49 s1759-1770 doi: 10.1007/s13280-020-01347-3
  11. 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. Vol 714 doi: 10.1016/j.scitotenv.2020.136774
  12. 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. Vol 721 doi: 10.1016/j.scitotenv.2020.137647
  13. 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. Vol 82 No3 s241-251 doi: 10.3354/ame01894
  14. 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. Vol 53 No4 s1834-1843 doi: 10.1021/acs.est.8b06399
  15. 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. Vol 9 doi: 10.1038/s41598-019-46838-w
  16. 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. Vol 241 s427-438 doi: 10.1016/j.jenvman.2019.02.024
  17. 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. Vol 3 No3 s275-284 doi: 10.1002/lol2.10077
  18. 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. Vol 229 doi: 10.1007/s11270-018-4013-9
  19. 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. Vol 627 s341-348 doi: 10.1016/j.scitotenv.2018.01.252
  20. 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. Vol 625 s1129-1145 doi: 10.1016/j.scitotenv.2017.12.245
NIVA begynte å registrere vitenskapelige artikler i CRIStin i 2010, rapporter fra 2014.

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