Browsing Det matematisk-naturvitenskapelige fakultet by Author "de Wit, Heleen"

Now showing items 1-7 of 7

  • Boreal Headwater Catchment as Hot Spot of Carbon Processing From Headwater to Fjord 
    Clayer, Francois; Thrane, Jan-Erik; Brandt, Uta; Dörsch, Peter; de Wit, Heleen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Boreal headwaters and aquatic sediments are significant transporters, stores and processors of terrestrial carbon (C) as well as emitters of greenhouse gases (GHGs), mainly CO2 and CH4. While terrestrial ecosystems are net ...
  • Case study on impacts of large-scale re-/afforestation on ecosystem services in Nordic regions 
    Vogt, Rolf David; de Wit, Heleen; Koponen, Kati (Research report / Forskningsrapport, 2022)
  • Catchment properties as predictors of greenhouse gas concentrations across a gradient of boreal lakes 
    Valiente Parra, Nicolas; Eiler, Alexander; Allesson, Lina; Andersen, Tom; Clayer, François; Crapart, Camille Marie; Dörsch, Peter; Fontaine, Laurent; Heuschele, Jan David; Vogt, Rolf David; Wei, Jing; de Wit, Heleen; Hessen, Dag Olav (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Boreal lakes are the most abundant lakes on Earth. Changes in acid rain deposition, climate, and catchment land use have increased lateral fluxes of terrestrial dissolved organic matter (DOM), resulting in a widespread ...
  • Changing water chemistry in one thousand Norwegian lakes during three decades of cleaner air and climate change 
    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 (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    We present long-term changes in Norwegian lake water quality across regional gradients in atmospheric pollution, air temperature, hydrology, and vegetation using (a) a national representative lake survey carried out in ...
  • Cleaner air reveals growing influence of climate on dissolved organic carbon trends in northern headwaters 
    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. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Surface water browning, the result of increasing concentrations of dissolved organic matter (DOM), has been widespread in northern ecosystems in recent decades. Here, we assess a database of 426 undisturbed headwater lakes ...
  • Factors Governing Site and Charge Density of Dissolved Natural Organic Matter 
    Vogt, Rolf David; Garmo, Øyvind Aaberg; Austnes, Kari; Kaste, Øyvind; Haaland, Ståle Leif; Sample, James Edward; Thrane, Jan-Erik; Skancke, Liv Bente; Gundersen, Cathrine Brecke; de Wit, Heleen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
    Rising organic charge in northern freshwaters is attributed to increasing levels of dissolved natural organic matter (DNOM) and changes in water chemistry. Organic charge concentration may be determined through charge ...
  • Long-term rise in riverine dissolved organic carbon concentration is predicted by electrolyte solubility theory 
    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. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    The riverine dissolved organic carbon (DOC) flux is of similar magnitude to the terrestrial sink for atmospheric CO2, but the factors controlling it remain poorly determined and are largely absent from Earth system models ...