Global Change Reshapes Northern Lakes Towards Browner, More Nutrient-Depleted and Nitrogen-Limited Conditions With Contrasting Impacts on Phytoplankton Biomass
Ann Kristin Bergström, Aleksey Paltsev, Dag Olav Hessen, Pirkko Kortelainen, Jussi Vuorenmaa, Heleen de Wit, Danny C.P. Lau, Tobias Vrede, Kristiina Vuorio, Peter D.F. Isles
Vitenskapelig artikkel
| Global Change Biology
Forty years of studying effects of sulphur and nitrogen deposition in freshwaters in Europe and North America
Kari Austnes, Heleen de Wit, Rolf David Vogt, Jens Arle, Areti Balkoni, Louise Franssen, Jens Fölster, Martyn Futter, Cathrine Brecke Gundersen, Scott Higgins
Konferanseforedrag
| BIOGEOMON 2026
In-Lake GHG Production Constrained by Lake DOM Mass Balance in a Boreal Catchment
Xiang Lu, Francois Clayer, Peter Dörsch, Dag Olav Hessen, Uta Brandt, Mats Rouven Ippach, Alexander Michael Delver, Heleen de Wit
Vitenskapelig artikkel
| Water Resources Research
A long-term ecosystem monitoring dataset from the ICP Integrated Monitoring network: biogeochemical data from 1977–2020 across 14 European countries
James Weldon, Wenche Aas, Barbara Albiniak, Algirdas Augustaitis, Ieva Baužienė, Camilla Capelli, Nicholas Clarke, Thomas Cummins, Heleen de Wit, Thomas Dirnböck
Vitenskapelig artikkel
| Scientific Data
The Effects of Forest Harvesting on Total and Methylmercury Concentrations in Surface Waters Depend on Harvest Practices and Physical Site Characteristics
Karin Eklöf, Heleen de Wit, Chris S. Eckley, Collin A. Eagles-Smith, Susan L. Eggert, Robert W. Mackereth, Ulf Skyllberg, Liisa Ukonmaanaho, Matti Verta, Craig Allan
Vitenskapelig artikkel
| Environmental Science and Technology
Temporal Decoupling Between Total Organic Carbon and Iron in Lakes Linked to Interannual Changes in Precipitation
Aleksey Paltsev, Irena F. Creed, Dag Olav Hessen, Stina Drakare, Danny C.P. Lau, Tobias Vrede, Pirkko Kortelainen, Kristiina Vuorio, Kimmo Kalevi Kahilainen, Heleen de Wit
Vitenskapelig artikkel
| Global Biogeochemical Cycles
Soil Carbon Dynamics and Biodiversity in Boreal Forests from Harvest Maturity to Old-Growth: A Research Overview
Shun Hasegawa, Kjetil Schanke Aas, Ulrika Jansson Asplund, Lise Dalsgaard, Heleen de Wit, Andreas Hagenbo, Carl-Fredrik Johannesson, Jenni Nordén
Forskningsrapport
Integration of terrestrial and aquatic C fluxes
Heleen de Wit, Terje Koren Berntsen, Elisabeth-Christina Worner, Leah Amber Jackson-Blake, Francois Clayer, xiang lu
Konferanseforedrag
| BioGov and CBA Fall Meeting
Integration of terrestrial and aquatic C fluxes. Case study Langtjern
Heleen de Wit, Leah Amber Jackson-Blake, Terje Koren Berntsen, Elisabeth-Christina Worner, Holger Lange, Francois Clayer, Xiang Lu
Konferanseforedrag
| From Land to Water — Changing Cycles of Carbon and Nutrients Across Ecosystems
Effects on carbon dynamics of increased use of continuous cover forestry in Norwegian forests
Ignacio Sevillano, Aksel Granhus, Clara Antón Fernandéz, Heleen de Wit, Fride Høistad Schei, Rannveig Margrete Jacobsen, Ulrika Jansson Asplund, Heikki Korpunen, Christian Wilhelm Mohr, Jenni Nordén
Konferanseforedrag
| The International Society for Ecological Modelling Global Conference 2025
Terrestrial carbon inputs drive methylmercury accumulation in zooplankton of boreal and subarctic lakes
Stephanie D. Graves, Karen A. Kidd, Michael T. Arts, Hans Fredrik Veiteberg Braaten, Heleen de Wit, Katrine Borgå, Staffan Åkerblom, Amanda Elizabeth Poste
Vitenskapelig artikkel
| Limnology and Oceanography
Distinguishing the Effects of Climate Change and Acid Rain Recovery on Water Chemistry Trends: A Challenging Task?
Rolf David Vogt, Øyvind Kaste, Jan-Erik Thrane, Areti Balkoni, Francois Clayer, Heleen de Wit, Ann Kristin Schartau
Konferanseforedrag
| eLTER Science Conference 2025
ICP Waters Programme Manual
Cathrine Brecke Gundersen, Manuel Toro Velasco, Gaute Velle, Michela Rogora, Kate Louise Hawley, Jens Fölster, Ingrid Nygren, Rolf David Vogt, Agnieszka Kolado, Agnieszka Pasztaleniec
Forskningsrapport
Afforestation on Nordic grasslands: Trade-offs and synergies for climate mitigation, biodiversity, and ecosystem services
Iulie Aslaksen, Anders Bryn, Karina Engelbrecht Clemmensen, Heleen de Wit, Urban Emanuelsson, Per Arild Garnåsjordet, Solveig Glomsrød, Maximo Graesse, Kristine Grimsrud, Jon Gudmundsson
Vitenskapelig artikkel
| Global Environmental Change (GEC) Advances
Is it possible to easily distinguish the effects of climate change and the decline in acid rain on trends in water chemistry?
Rolf David Vogt, Øyvind Kaste, Jan-Erik Thrane, Areti Balkoni, François Clayer, Heleen de Wit, Ann Kristin Schartau
Konferanseforedrag
| Norwegian Environmental Chemistry Symposium (NECS)
Utvikling av framskrivinger og scenarioer for norsk natur
Maja Stade Aarønæs, Matthew Grainger, Gunnhild Søgaard, Ulrika Jansson, Heleen de Wit, Christian Lindemann, Ann Kristin Schartau, Eva Skarbøvik, Øyvind Handberg, Henrik Lindhjem
Forskningsrapport
Factors Governing Site and Charge Density of Dissolved Natural Organic Matter
Rolf David Vogt, Øyvind Aaberg Garmo, Kari Austnes, Øyvind Kaste, Ståle Leif Haaland, James Edward Sample, Jan-Erik Thrane, Liv Bente Skancke, Cathrine Brecke Gundersen, Heleen de Wit
Vitenskapelig artikkel
| Water
Trends and patterns in surface water chemistry in Europe and North America between 1990 and 2020, with a focus on calcium
Rolf David Vogt, Jens Arle, Kari Austnes, Herman Van Dam, Martyn Futter, Jens Fölster, Cathrine Brecke Gundersen, Scott N. Higgins, Daniel Houle, Jakub Hruska
Forskningsrapport
Factors Governing Site and Charge Density of Dissolved Natural Organic Matter (DNOM)
Rolf David Vogt, Øyvind Aaberg Garmo, Kari Austnes, Øyvind Kaste, Ståle Leif Haaland, James Edward Sample, Jan-Erik Thrane, Liv Bente Skancke, Cathrine Brecke Gundersen, Heleen de Wit
Konferanseplakat
| 22nd Meeting of the International Humic Substances Society
Trends in mercury, lead and cadmium concentrations in 27 European streams and rivers: 2000–2020
Karin Eklöf, Claudia von Brömssen, Brian Huser, Staffan Åkerblom, Algirdas Augustaitis, Hans Fredrik Veiteberg Braaten, Heleen de Wit, Thomas Dirnböck, David Elustondo, Ulf Grandin
Vitenskapelig artikkel
| Environmental Pollution (1987)
Disaggregating the Carbon Exchange of Degrading Permafrost Peatlands Using Bayesian Deep Learning
Norbert Pirk, Kristoffer Aalstad, Erik Schytt Mannerfelt, Francois Clayer, Heleen de Wit, Casper Tai Christiansen, Inge Althuizen, Hanna Lee, Sebastian Westermann
Vitenskapelig artikkel
| Geophysical Research Letters
Modelling the Effects of Forest use Change on Brownification of Finnish Rivers under Atmospheric Pressure
Katri Rankinen, Jose E. Cano Bernal, Maria Holmberg, Magnus Norling, Torsti Schulz, Annikki Mäkelä, Ninni Mikkonen, Heini Kujala, Leah Amber Jackson-Blake, Heleen de Wit
Vitenskapelig artikkel
| Environmental Management
Effekter på karbondynamikk, miljø og næring ved økt bruk av lukkede hogstformer
Aksel Granhus, Clara Antón-Fernández, Heleen de Wit, Kjersti Holt Hanssen, Fride Høistad Schei, Rannveig Margrete Vigdisdatter Jacobsen, Ulrika Jansson, Heikki Korpunen, Christian Wilhelm Mohr, Jenni Nordén
Forskningsrapport
Declining calcium concentration drives shifts toward smaller and less nutritious zooplankton in northern lakes
Ann-Kristin Bergström, Irena F. Creed, Aleksey Paltsev, Heleen de Wit, Danny C. P. Lau, Stina Drakare, Tobias Vrede, Peter D. F. Isles, Anders Jonsson, Erik Geibrink
Vitenskapelig artikkel
| Global Change Biology
Phytoplankton biomass in northern lakes reveals a complex response to global change
Aleksey Paltsev, Ann-Kristin Bergström, Kristiina Vuorio, Irena F. Creed, Dag Olav Hessen, Pirkko Kortelainen, Jussi Vuorenmaa, Heleen de Wit, Danny C.P. Lau, Tobias Vrede
Vitenskapelig artikkel
| Science of the Total Environment
NKL-1915 National Nitrogen Budgets in Scandinavia: consequences for climate change and for eutrophication – synthesis report. Report number C 814
Filip Moldan, Sara Jutterström, Johanna Stadmark, Anu Akujärvi, Martin Forsius, Maria Holmberg, Kari Austnes, Heleen de Wit, Jesper Bak
Forskningsrapport
Long-term rise in riverine dissolved organic carbon concentration is predicted by electrolyte solubility theory
Donald T. Monteith, Peter A. Henrys, Jakub Hruška, Heleen de Wit, Pavel Krám, Filip Moldan, Maximilian Posch, Antti Räike, John L. Stoddard, Ewan M. Shilland
Vitenskapelig artikkel
| Science Advances
Response of lake metabolism to catchment inputs inferred using high-frequency lake and stream data from across the northern hemisphere
Jessica R. Corman, Jacob A. Zwart, Jennifer Klug, Denise A. Bruesewitz, Elvira de Eyto, Marcus Klaus, Lesley B. Knoll, James A. Rusak, Michael J. Vanni, María Belén Alfonso
Vitenskapelig artikkel
| Limnology and Oceanography
Changing water chemistry in one thousand Norwegian lakes during three decades of cleaner air and climate change
Heleen de Wit, Øyvind Aaberg Garmo, Leah Amber Jackson-Blake, Francois Clayer, Rolf David Vogt, Kari Austnes, Øyvind Kaste, Cathrine Brecke Gundersen, Jose-Luis Guerrero, Atle Hindar
Vitenskapelig artikkel
| Global Biogeochemical Cycles
Deepwater dissolved oxygen shows little ecological memory between lake phenological seasons
Rachel M. Pilla, Craig E. Williamson, Erin P. Overholt, Kevin C. Rose, Stella Angela Berger, Raoul-Marie Couture, Heleen de Wit, Ignacio Granados, Hans-Peter F. Grossart, Georgiy B. Kirillin
Vitenskapelig artikkel
| INLAND WATERS
Responses of benthic invertebrates to chemical recovery from acidification
Gaute Velle, Christian Lucien Bodin, Jens Arle, Kari Austnes, Angela Boggero, Jindriska Bojkova, Riccardo Fornaroli, Jens Fölster, Willem Goedkoop, Iwan Jones
Forskningsrapport
Catchment properties as predictors of greenhouse gas concentrations across a gradient of boreal lakes
Nicolas Valiente Parra, Alexander Eiler, Lina Allesson, Tom Andersen, Francois Clayer, Camille Marie Crapart, Peter Dörsch, Laurent Fontaine, Jan David Heuschele, Rolf David Vogt
Vitenskapelig artikkel
| Frontiers in Environmental Science
Review and revision of empirical critical loads of nitrogen for Europe
Roland Bobbink, Christin Loran, Hilde Tomassen, Khalid Aazem, Julian Aherne, Rocío Alonso, Frank Ashwood, Sabine Augustin, Jesper Bak, Vegar Bakkestuen
Forskningsrapport
Assessing critical load exceedances and ecosystem impacts of anthropogenic nitrogen and sulphur deposition at unmanaged forested catchments in Europe
Martin Forsius, Maximilian Posch, Maria Holmberg, Jussi Vuorenmaa, Sirpa Kleemola, Algirdas Augustaitis, Burkhard Beudert, Witold Bochenek, Nicholas Clarke, Heleen de Wit
Vitenskapelig artikkel
| Science of the Total Environment
The impact of the spring 2020 snowmelt floods on physicochemical
conditions in three Norwegian river-fjord-coastal systems
Amanda Poste, Øyvind Kaste, Helene Frigstad, Heleen de Wit, E. Therese Harvey, Louise Valestrand, Anne Deininger, Tina Bryntesen, Lisa-Marie Delpech, Guttorm Christensen
Forskningsrapport
Cleaner air reveals growing influence of climate on dissolved organic carbon trends in northern headwaters
Heleen de Wit, John L. Stoddard, Donald T. Monteith, James E. Sample, Kari Austnes, Suzanne Couture, Jens Fölster, Scott N. Higgins, Daniel Houle, Jakub Hruška
Vitenskapelig artikkel
| Environmental Research Letters
Overvåking av referanseelver - Utprøving av klassifiseringssystemet for basisovervåking i referansevassdrag
Leonard Sandin, Jan-Erik Thrane, Jonas Persson, Maia Røst Kile, Knut Andreas Eikland Bækkelie, Knut Marius Myrvold, Øyvind Aaberg Garmo, Merete Grung, Jose-Luis Guerrero, Heleen de Wit
Forskningsrapport
Verdsetting av luftforurensningens kostnader for miljø – en litteraturstudie
Kristin Magnussen, Per Arild Aarrestad, Kari Austnes, Vegar Bakkestuen, Heleen de Wit, Erlend M. Fleisje, Ingvild S. Furuseth, Ståle Navrud
Forskningsrapport
Hydrological controls of DOC export from Nordic headwater catchments
Jacqueline Knutson, Francois Clayer, Magnus Dahler Norling, Ahti Lepistö, Hannu Marttila, Martyn N. Futter, Karin Eklöf, Heleen de Wit
Foredrag
| vEGU
Potential impacts of a future Nordic bioeconomy on surface water quality
Hannu Marttila, Ahti Lepistö, Anne Tolvanen, Marianne Bechmann, Katarina Kyllmar, Artti Juutinen, Hannah Wenng, Eva Skarbøvik, Martyn Futter, Pirkko Kortelainen
Vitenskapelig artikkel
| Ambio
Overvåking av referanseelver 2019. Basisovervåking i henhold til vannforskriften.
Jan-Erik Thrane, Jonas Persson, Maia Røst Kile, Knut Andreas Eikland Bækkelie, Knut Marius Myrvold, Øyvind Aaberg Garmo, Merete Grung, Jose-Luis Guerrero, Heleen de Wit, Therese Fosholt Moe
Forskningsrapport
Recent advances in understanding and measurement of mercury in the environment: Terrestrial Hg cycling
Kevin Bishop, James B. Shanley, Ami Riscassi, Heleen de Wit, Karin Eklöf, Bo Meng, Carl Mitchell, Stefan Osterwalder, Paul F. Schuster, Jackson Webster
Vitenskapelig artikkel
| Science of the Total Environment
Land-use dominates climate controls on nitrogen and phosphorus export from managed and natural Nordic headwater catchments
Heleen A de Wit, Ahti Lepistö, Hannu Marttila, Hannah Wenng, Marianne Bechmann, Gitte Blicher-Mathiesen, Karin Eklöf, Martyn N. Futter, Pirkko Kortelainen, Brian Kronvang
Vitenskapelig artikkel
| Hydrological Processes
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
Øyvind Aaberg Garmo, Øyvind Kaste, Jens Arle, Kari Austnes, Heleen de Wit, Jens Fölster, Daniel Houle, Jakub Hruska, Iveta Indriksone, Don Monteith
Forskningsrapport
Improved Environmental Status: 50 Years of Declining Fish Mercury Levels in Boreal and Subarctic Fennoscandia
Hans Fredrik Veiteberg Braaten, Staffan Åkerblom, Kimmo Kalevi Kahilainen, Martti Rask, Jussi Vuorenmaa, Jaakko Mannio, Tommi Malinen, Espen Lydersen, Amanda Poste, Per-Arne Amundsen
Vitenskapelig artikkel
| Environmental Science and Technology
Widespread diminishing anthropogenic effects on calcium in freshwaters
Gesa A Weyhenmeyer, Jens Hartmann, Dag O Hessen, Jiří Kopáček, Josef Hejzlar, Stéphan Jacquet, Stephen K Hamilton, Piet Verburg, Taylor H Leach, Martin Schmid
Vitenskapelig artikkel
| Scientific Reports
Overvåking av referanseelver 2018. Basisovervåking i henhold til vannforskriften
Therese Fosholt Moe, Jonas Persson, Knut Andreas Eikland Bækkelie, Knut Marius Myrvold, Øyvind Aaberg Garmo, Merete Grung, Atle Hindar, Jose-Luis Guerrero Calidonio, Heleen de Wit
Forskningsrapport
Implications of Coastal Darkening for Contaminant Transport, Bioavailability, and Trophic Transfer in Northern Coastal Waters
Maeve McGovern, Anita Evenset, Katrine Borgå, Heleen de Wit, Hans Fredrik Veiteberg Braaten, Dag Olav Hessen, Sabrina Schultze, Anders Ruus, Amanda Poste
Vitenskapelig artikkel
| Environmental Science and Technology
Natural organic matter fractions and their removal in full-scale drinking water treatment under cold climate conditions in Nordic capitals
Pawel Krzeminski, Christian Vogelsang, Thomas Meyn, Stephan Köhler, Heikki Poutanen, Heleen de Wit, Wolfgang Uhl
Vitenskapelig artikkel
| Journal of Environmental Management (JEM)
In-Lake Processing Influences DOM Biodegradability and Hg-cycling
Cathrine Brecke Gundersen, Pawel Krzeminski, Elena Martinez-Frances, Stevenson Harvey Lee Ong, Eline Mosleth Færgestad, Hans Fredrik Veiteberg Braaten, Rolf David Vogt, Heleen de Wit
Konferanseforedrag
| EGU General Assembly 2019
Regional assessment of the current extent of acidification of surface waters in Europe and North America
Kari Austnes, Julian Aherne, Jens Arle, Marina Čičendajeva, Suzanne Couture, Jens Fölster, Øyvind Aaberg Garmo, Jakub Hruska, Don Monteith, Max Posch
Forskningsrapport
Mercury in freshwater fish from Fennoscandia (1965-2015) - temporal trends and potential environmental drivers
Hans Fredrik Veiteberg Braaten, Staffan Åkerblom, Heleen de Wit, Amanda Poste, Martti Rask, Jussi Vuorenmaa, Kimmo Kalevi Kahilainen, Tommi Malinen
Konferanseforedrag
| European Geosciences Union
Overvåking av referanseelver 2017. Basisovervåking i henhold til vannforskriften
Therese Fosholt Moe, Jan-Erik Thrane, Jonas Persson, Knut Andreas Eikland Bækkelie, Knut Marius Myrvold, Kjetil Olstad, Øyvind Aaberg Garmo, Merete Grung, Heleen de Wit
Forskningsrapport
Pipes or chimneys? For carbon cycling in small boreal lakes, precipitation matters most
Heleen A de Wit, Raoul-Marie Couture, Leah Jackson-Blake, Martyn N. Futter, Salar Valinia, Kari Austnes, Jose-Luis Guerrero, Yan Lin
Vitenskapelig artikkel
| Limnology and Oceanography Letters