Blar i NIVA Open Access Archive på forfatter "Austnes, Kari"
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Regional assessment of the current extent of acidification of surface waters in Europe and North America
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 (NIVA-rapport;7268, Research report, 2018)The current status of surface water acidification related to air pollution in Europe and North America has been assessed using country reports, monitoring data, critical loads and exceedance data, acid sensitivity and ... -
Response of lake metabolism to catchment inputs inferred using high-frequency lake and stream data from across the northern hemisphere
Corman, Jessica R.; Zwart, Jacob A.; Klug, Jennifer; Bruesewitz, Denise A.; de Eyto, Elvira; Klaus, Marcus; Knoll, Lesley B.; Rusak, James A.; Vanni, Michael J.; Alfonso, María Belén; Fernandez, Rocio Luz; Yao, Huaxia; Austnes, Kari; Couture, Raoul-Marie; de Wit, Heleen; Karlsson, Jan; Laas, Alo (Peer reviewed; Journal article, 2023)In lakes, the rates of gross primary production (GPP), ecosystem respiration (R), and net ecosystem production (NEP) are often controlled by resource availability. Herein, we explore how catchment vs. within lake predictors ... -
Responses of benthic invertebrates to chemical recovery from acidification
Velle, Gaute; Bodin, Christian Lucien; Arle, Jens; Austnes, Kari; Boggero, Angela; Bojkova, Jindriska; Fornaroli, Riccardo; Fölster, Jens; Goedkoop, Willem; Jones, Iwan; Juggins, Steve; Lau, Danny C.P.; Monteith, Don; Murphy, John; Musazzi, Simona; Shilland, Ewan; Steingruber, Sandra; Wiklund, Magda-Lena; de Wit, Heleen (NIVA-rapport;7881-2023, Research report, 2023)The report provides an assessment of biological recovery from acidification in freshwater environments in Europe. The report consists of two parts, a regional data analysis based on an international dataset of biological ... -
Riverine inputs and direct discharges to Norwegian coastal waters – 2011
Skarbøvik, Eva; Stålnacke, Per; Austnes, Kari; Selvik, John Rune; Aakerøy, Paul Andreas; Tjomsland, Torulv; Høgåsen, Tore; Beldring, Stein (NIVA-rapport;6439, Research report, 2012)Riverine inputs and direct discharges to Norwegian coastal waters in 2011 have been estimated in accordance with the requirements of the OSPAR Commission. Due to high water discharges in 2011, the riverine inputs of both ... -
Riverine inputs and direct discharges to Norwegian coastal waters – 2012
Skarbøvik, Eva; Stålnacke, Per; Austnes, Kari; Selvik, John Rune; Pengerud, Annelene; Tjomsland, Torulv; Høgåsen, Tore; Beldring, Stein (NIVA-rapport;6584, Research report, 2013)Riverine inputs and direct discharges to Norwegian coastal waters in 2012 have been estimated in accordance with the requirements of the OSPAR Commission. Water discharges in 2012 were lower than in 2011, but higher than ... -
Riverine inputs and direct discharges to Norwegian coastal waters – 2013
Skarbøvik, Eva; Austnes, Kari; Allan, Ian; Stålnacke, Per; Høgåsen, Tore; Nemes, Attila; Selvik, John Rune; Garmo, Øyvind Aaberg; Beldring, Stein (NIVA-rapport;6738, Research report, 2014)Riverine inputs and direct discharges to Norwegian coastal waters in 2013 have been estimated in accordance with the requirements of the OSPAR Commission. Nutrients, metals and organic pollutants have been monitored in ... -
Streamwater responses to reduced nitrogen deposition at four small upland catchments in Norway
Kaste, Øyvind; Austnes, Kari; de Wit, Heleen (Peer reviewed; Journal article, 2020)Reduced emissions of nitrogen (N) in Europe have resulted in decreasing atmospheric deposition since 1990. Long-term data (1988–2017) from four small Norwegian catchments located along gradients in N deposition, rainfall, ... -
Tålegrenser for forsuring og overskridelser for Høyangervassdraget i Vestland fylke
Gundersen, Cathrine Brecke; Austnes, Kari; Sample, James Edward; Lund, Espen (NIVA-rapport;7910-2023, Research report, 2023)Det har blitt beregnet tålegrenser for forsuring og overskridelse av disse for Høyangervassdraget og separat for delnedbørfeltene Håland, Gautingsdal og Eiriksdal. Overskridelser er beregnet for dagens (årene 2017-2021) ... -
Tålegrenser for forsuring og overskridelser for seks vassdrag i Vestland fylke
Austnes, Kari; Sample, James Edward; Lund, Espen (NIVA-rapport;7586, Research report, 2021)Det har blitt beregnet tålegrenser for forsuring og overskridelse av disse for Samnanger-, Uskedals-, Eksingedals-, Modals-, Yndesdals- og Flekke- og Guddalsvassdraget. Overskridelser er beregnet for dagens (2012-2016) og ... -
The Norwegian river monitoring programme – water quality status and trends 2017
Kaste, Øyvind; Skarbøvik, Eva; Greipsland, Inga; Gundersen, Cathrine Brecke; Austnes, Kari; Skancke, Liv Bente; Guerrero, Jose-Luis; Sample, James Edward (NIVA-rapport;7313, Research report, 2018)From 2017, the Norwegian River Monitoring Programme (Elveovervåkingsprogrammet) replaced the former RID programme “Riverine inputs and direct discharges to Norwegian coastal waters” which had run continuously since 1990. ... -
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
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 (NIVA-rapport;7479, Research report, 2020)The report presents trends in sulphate, nitrate, chloride, base cations, ANC (acid neutralising capacity), pH and DOC at circa 500 ICP Waters sites in Europe and North America for the period 1990-2016. Time series were ... -
Trends and patterns in surface water chemistry in Europe and North America between 1990 and 2020, with a focus on calcium
Vogt, Rolf David; Agnieszka, Kolada; Arle, Jens; Austnes, Kari; Van Dam, Herman; Futter, Martyn; Fölster, Jens; Gundersen, Cathrine Brecke; Higgins, Scott N.; Houle, Daniel; Hruska, Jakub; Monteith, Don; Paterson, Andrew; Rogora, Michela; Sample, James Edward; Stoddard, John; Steingruber, Sandra; Ulanczyk, Rafak; Vuorenmaa, Jussi; de Wit, Heleen (NIVA-rapport;7931-2024, Research report, 2024)The report presents trends in major anions and cations, pH, TOC and bicarbonate in surface waters in Europe and North America from 1990 to 2020. Special attention is given to trends in calcium, which showed some unexpected ... -
Using in situ sensor-based monitoring to study impacts of climate change on river water quality and element fluxes
Poste, Amanda; Jackson-Blake, Leah Amber; Mcgovern, Maeve; Kaste, Øyvind; Sample, James Edward; Skogan, Odd Arne Segtnan; Austnes, Kari; Brandt, Uta; Høgberget, Rolf (NIVA-rapport;7812-2023, Research report, 2022)The report contains an analysis of high-frequency sensor data from two rivers included in the Norwegian River Monitoring Programme; Storelva in southern Norway and Målselva in northern Norway. The main aim of the report ...