Blar i NIVA-rapporter på emneord "lakes"
Viser treff 1-20 av 76
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AL:PE - Acidification of mountain lakes: Palaeolimnology and ecology. Part 2 - Remote mountain lakes as indicators of air pollution and climate change
(NIVA-rapport;3638, Research report, 1997)AL:PE, funded by the European Commission is a multi-disciplinary, multi-national project coordinated by research groups in London and Oslo. It represents the first comprehensive study of remote mountain lakes at a European ... -
AL:PE Acidification of mountain Lakes: Palaeolimnology and Ecology. part 2 - Utvidelse Sluttrapport til Norges forskningsråd
(NIVA-rapport;3535, Research report, 1996)AL:PE prosjektet ble startet for å vurdere status for alpine eller arktiske innsjøer, kjemisk og biologisk kombinert med analyse av sedimentkjerner. Arbeidet er utført i sjøer med varierende forurensningsbelastning, og ... -
Application of the First-order Acidity Balance (FAB) model to Norwegian surface waters
(NIVA-rapport;3809, Research report, 1998)We have applied the First-order Acidity Balance (FAB) model and the Steady State Water Chemistry (SSWC) model to data from the Norwegian lake survey carried out in 1995, the Norwegian Critical Load database, the calibrated ... -
Befaringsundersøkelse av resipienter i Lom 11-12/9-02
(NIVA-rapport;4613, Research report, 2002)Det ble gjennomført en befaringsundersøkelse av 13 vassdragsavsnitt i Lom kommune den 11. og 12. september 2002. De fleste av disse tjener som resipienter for turistanlegg i, eller i tilknytning til Jotunheimen. ... -
Binding grid cells - Norway An evaluation
(NIVA-rapport;3942, Research report, 1998)The quality of the critical load data for so-called "binding grid cells" in Norway has been checked. These are the following EMEP-grids (150km x 150 km): 16,20 16,21 16,30 17,19 17,20 and 18,21. Critical loads have been ... -
Chemistry and fish status of 67 acidified lakes at the coast of Aust-Agder, Southern Norway, in relation to post-glacial marine deposits
(NIVA-rapport;2454, Research report, 1990)67 lakes in a 0-15 km wide coastal zone within Aust-Agder County in Southern Norway have been investigated. The area receives 1,5 g S/m² and, 1,7 g N/m² as wet deposition. All lakes had about the same concentration of ... -
Chemistry of lakes in the Nordic region - Denmark, Finland with Åland, Iceland, Norway with Svalbard and Bear Island, and Sweden
(NIVA-rapport;4391, Research report, 2001)This report presents the first common evaluation of water chemistry in the Nordic countries (except for the Faroe Islands and Greenland): Denmark, Finland including Åland, Iceland, Norway including Svalbard and Bear Island, ... -
Critical load of acidity to surface waters in South-central Ontario Canada I. Application of the Steady State Water Chemistry (SSWC) model
(NIVA-rapport;4427, Research report, 2001)The Steady-State Water Chemistry Model was applied to lakes in 5 regions in Ontario, Canada. Critical loads and exceedances calculated for the regions indicate that the portion of the lakes with exceedances dropped from ... -
Critical Load of Acidity to Surface Waters in Southcentral Ontorario, Canada
(NIVA-rapport;4567, Research report, 2002)The First-order Acidity Balance (FAB) model was applied to 291 lakes in the Muskoka river catchment in Ontario, Canada. Critical loads and exceedances calculated for the region indicate that the portion of the lakes with ... -
Critical loads for surface waters - chemical criteria for inputs of strong acids
(NIVA-rapport;2466, Research report, 1990)Chemical criteria have been established for the critical loads of strong acids to surface waters in Norway. A complete set of data is available for all the counties with the exception of North Trøndelag, Nordland, Troms ... -
Critical loads of acidity to lakes in the Polish Tatra Mountains. A study of the yearly variations in the precipitation and water chemistry
(NIVA-rapport;2981, Research report, 1994)As part of the Agreement on Environmental Cooperation between Norway and Poland critical loads of acidity and their exceedance to two lakes in the Polish Tatra Mountains have been calculated after an extensive programme ... -
Critical loads of acidity to surface waters: A case study from the Polish Tatra Mountains
(NIVA-rapport;2725, Research report, 1992)As part of the Agreement on Environmental Cooperation between Norway and Poland critical loads of acidity and their exceedance to lakes in the granitic area of the Polish Tatra Mountains have been estimated. Lake samples ... -
Development of an efficient water quality monitoring system for the Neris River
(NIVA-rapport;3978, Research report, 1998)The main project task has been further development of the current water monitoring system in Lithuania. Neris River catshment has been the pilot study area. The work have included laboratory and field work on water chemistry, ... -
Effekter av kalking på vannvegetasjon/krypsiv-tilgroing. Reundersøkelse av kalkede og ikke kalkede innsjøer i 2003
(NIVA-rapport;4938, Research report, 2005)I august 2003 ble 24 innsjøer med totalt 31 lokaliteter undersøkt mhp. forekomst av krypsiv i området Lyngdal, Flekkefjord og Sokndal. 29 av lokalitetene var tidligere undersøkt i perioden 1992-1994 i forbindelse med ... -
EUROHARP 9-2004. Nutrient Retention Handbook
(NIVA-rapport;4874, Research report, 2005)The EC funded EUROHARP project encompasses 22 research institutes from17 European countries (2002-2005). The overall objective of the EUROHARPwork is to provide end-users with guidance for an appropriate choice ofquantification ... -
Evaluering av kalkingstrategien for store innsjøkalkingsprosjekter i Norge
(NIVA-rapport;4034, Research report, 1999)Den statlig finansierte kalkingsvirksomheten omfatter bl.a. en rekke større innsjøkalkingsprosjekter. Noen av dem er med i et omfattende overvåkingsprogram, mens andre er del av den ordinære kalkingsvirksomheten og den ... -
Exceedance of critical loads for lakes in Finland, Norway and Sweden: Reduction requirements for nitrogen and sulfur deposition
(NIVA-rapport;2841, Research report, 1993)The main goal of the present study was to evaluate the different ways of computing the exceedances and the reductions needed for N and S depositions. Two models for calculating the steady state critical loads for N and S ... -
Forslag til overvåkingsplan for vannforekomster i Oppland fylke
(NIVA-rapport;3466, Research report, 1996)Rapporten inneholder et forslag til plan for overvåking av vannkvaliteten i innsjøer og elver i Oppland fylke. Denne bygger videre på det som er gjort tidligere av undersøkelser der slike finnes. Målet er at det gjennomføres ... -
Forsuring og tungmetallforurensning i Sør-Varanger. Fremdriftsrapport for 1990
(NIVA-rapport;2687, Research report, 1991)Fra 1966 til 1986 ble konsentrasjonene av sulfat i innsjøer øst for Kirkenes mer enn fordoblet. Innsjøovervåkingen fra 1986 til 1990 viser at forsuringssituasjonen har vært tilnærmet stabil i denne perioden. Pasvikelva har ... -
Forsuringssituasjonen i Fyresvatn og Nisser 1982-83
(NIVA-rapport;1649, Research report, 1984)De pH-variasjoner som bekker og elver i nedbørfeltene til Fyresvatn og Nisser viser gjennom året jevnes ut i innsjøene hvor pH er mellom 5,1 og 5,6. Størst pH-variasjon gjennom året viser overflatelaget i Fyresvatn med 0,4 ...