Blar i NIVA Open Access Archive på forfatter "Garmo, Øyvind Aaberg"
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Proceedings of the 34th Task Force meeting of the ICP Waters Programme in Warsaw, May 7-9, 2018
Garmo, Øyvind Aaberg; Ulańczyk, Rafał; de Wit, Heleen (NIVA-rapport;7298, Research report, 2018)Proceedings of the 34th Task Force meeting of the ICP Waters Programme in Warsaw, May 7-9, 2018. National contributions from Russia and Armenia. -
Proceedings of the 35th Task Force meeting of the ICP Waters Programme in Helsinki, June 4-6, 2019
Garmo, Øyvind Aaberg; Austnes, Kari; Vuorenmaa, Jussi (NIVA-rapport;7437-2019, Research report, 2019)Proceedings of the 35th Task Force meeting of the ICP Waters Programme in Helsinki, June 4-6, 2019. National contributions from Russia. -
Proceedings of the 37th Task Force meeting of the ICP Waters Programme, held on-line, April 28-29, 2021
Garmo, Øyvind Aaberg; Furuseth, Ingvild Skumlien; Austnes, Kari (NIVA-rapport;7657, Research report, 2021)Proceedings of the 37th Task Force meeting of the ICP Waters Programme held on-line, April 28-29, 2021. National contributions from Italy. -
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 ... -
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 ... -
Sammenhengen mellom labilt aluminium og pH i kalkede laksevassdrag
Hindar, Atle; Garmo, Øyvind Aaberg; Teien, Hans-Christian (NIVA-rapport;6872, Research report, 2015)I kalkede laksevassdrag er det satt miljømål i form av differensierte pH-grenser (pH 6,0-6,4), og i vannforskriften er det satt en grense mellom god og moderat tilstand på 10 µg/L for labilt aluminium, LAl (positivt ladd ... -
Storskala utprøving av klordosering i Driva 2021
Hagen, Anders Gjørwad; Holter, Tobias Houge; Olstad, Kjetil; Garmo, Øyvind Aaberg; Hansen, Peter Stig; Høgberget, Rolf; Skogan, Odd Arne Segtnan; Ribeiro, Anne Luise; Amundsen, Marit Måsøy; Becsan, Ingar; Meyer, Kirk (NIVA-rapport;7724-2022, Research report, 2022)Lakseparasitten Gyrodactylus salaris er ansett som en stor trussel mot norsk villaks, og myndighetene har som mål å utrydde den fra alle områder hvor den er etablert (Anon 2014). Nåværende smittestatus, i tillegg til faren ... -
The effects of wildfire on the water chemistry of dilute, acidic lakes in southern Norway
Lydersen, Espen; Høgberget, Rolf; Vicente, Clara E. Moreno; Garmo, Øyvind Aaberg; Hagen, Per Christian (Journal article; Peer reviewed, 2014)Changes in lake water chemistry were studied for >4 years following a large wildfire in a boreal forest area in Mykland, southern Norway, an area characterized by thin and patchy, base-poor and slow-weathering soils and ... -
Tiltaksrettet overvåking av vannmiljø – Wacker Chemicals Norway As 2020-2021
Håll, Johnny Peter; Lindholm, Markus; Garmo, Øyvind Aaberg; Kemp, Joanna Lynn (NIVA-rapport;7670, Research report, 2021)Wacker Chemicals AS fikk våren 2019 tillatelse til økte utslipp av NOx, SO2, støv og PAH til luft fra Miljødirektoratet, i forbindelse med at ny ovn er blitt satt i produksjon (ovn 8). I den anledning ble det gitt pålegg ... -
Transformation Kinetics of Burnt Lime in Freshwater and Sea Water
Justnes, Harald; Escudero-Oñate, Carlos; Garmo, Øyvind Aaberg; Mengede, Martin (Peer reviewed; Journal article, 2020)Calcium oxide (CaO), also known as burnt lime, is being considered as a possible treatment to reduce the negative impact of sea urchins on tare forests in northern coastal waters and blue-green algal blooms in the surrounding ... -
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 in surface water chemistry in acidified areas in Europe and North America from 1990 to 2008
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 (Journal article; Peer reviewed, 2014)Acidification of lakes and rivers is still an environmental concern despite reduced emissions of acidifying compounds. We analysed trends in surface water chemistry of 173 acid-sensitive sites from 12 regions in Europe and ... -
Undersøkelse av miljøgifter i abbor og ørret fra innsjøen Store Åklungen
Garmo, Øyvind Aaberg; Bæk, Kine; Grung, Merete; Håll, Johnny Peter; Thrane, Jan-Erik (NIVA-rapport;7618, Research report, 2021)I forbindelse med prøvefiske for estimering av bestandsstatus for fisk i Store Åklungen ble det tatt ut prøver til miljøgiftundersøkelser. Gjeller ble analysert for metaller (og halvmetaller), lever for metaller og PFAS, ... -
Using carbon dioxide gas to lower the pH of tunnelling waste water – laboratory test and assessment of toxic potential
Garmo, Øyvind Aaberg; Escudero, Carlos (NIVA-rapport;6634, Research report, 2014)Building of tunnels produces waste water that often is highly alkaline. Such water can be toxic to aquatic organisms, and pH should be lowered before discharge to recipient. A reactor tank was built to test the use carbon ... -
Utvikling av klormetoden mot Gyrodactylus salaris. Feltforsøk i Batnfjordelva
Hagen, Anders Gjørwad; Hytterød, Sigurd; Olstad, Kjetil; Garmo, Øyvind Aaberg; Darrud, Mari; Holter, Tobias Houge; Martínez Francés, Elena (NIVA-rapport;7359, Research report, 2019)Det er kjent at klor tilsatt som monokloramin i svært lave konsentrasjoner kan fjerne Gyrodactylus salaris fra laksunger i løpet av få dager uten å ha synlige negative effekter på fisken. I denne rapporten presenteres et ... -
Vannkjemisk utvikling og biologisk tilstand etter kalkslutt i innsjøer i Hedmark
Garmo, Øyvind Aaberg; Johnsen, Stein Ivar; Eriksen, Tor Erik; Løvik, Jarl Eivind; Olstad, Kjetil (NIVA-rapport;7174, Research report, 2017)Kalkingsprogrammet i Hedmark ble avsluttet i 2013. I etterkant bIe det iverksatt overvåking av vannkjemi, bunndyr, fisk og kreps i tidligere kalkede vannforekomster. Kalsiumnivået er redusert siden kalkingen ble avsluttet, ... -
Vannkjemisk utvikling og biologisk tilstand etter kalkslutt i innsjøer i Hedmark. Rapport fra overvåking i perioden 2015-2018
Garmo, Øyvind Aaberg; Johnsen, Stein Ivar; Dokk, John Gunnar; Holter, Tobias Houge; Håll, Johnny Peter; Løvik, Jarl Eivind; Olstad, Kjetil (NIVA-rapport;7400, Research report, 2019)Kalkingsprogrammet i Hedmark ble avsluttet i 2013. I etterkant ble det iverksatt overvåking av vannkjemi, bunndyr, fisk og kreps i tidligere kalkede vannforekomster. Kalsiumnivået er redusert siden kalkingen ble avsluttet, ... -
Vurdering av biotilgjengelighetsmodeller som verktøy for karakterisering av resipienters sårbarhet for metallforurensing fra veg
Garmo, Øyvind Aaberg; Hertel-Aas, Turid; Ranneklev, Sissel Brit; Meland, Sondre (Journal article; Peer reviewed, 2015)Building, traffic and maintenance of road can lead to increased supply of metals to water bodies. The metals’ physico-chemical speciation and bioavilability toward aquatic organisms depend on water chemical variables such ...