Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2003
Authors
Lars HögbomAbstract
No abstract has been registered
Authors
Atle Hindar Richard Frederic Wright Petter Nilsen Thorbjørn Larssen R. HøgbergetAbstract
An acidified, 0.8km2 coniferous-forested catchment was limed with 3tha-1 of coarse-grained dolomite powder in September 1994. The liming resulted in an immediate change in runoff water chemistry relative to the stream of an adjacent reference catchment. pH, calcium, magnesium and acid neutralising capacity (ANC) increased and inorganic Al decreased after liming.Potential favourable water quality for sensitive organisms remained relatively constant over the post-liming period (7 years), and model simulations indicate that adequate water quality may last for an additional 4050 years. NO3 concentrations showed no significant change due to liming.A significant increasing trend in TOC was attributed to liming. Concentrations of Cd, Co, Fe, Mn, Ni and Zn were lower in the limed stream than in the reference stream during a period of 3 years after liming, whereas concentrations of As, Cu, and Pb were not significantly different. Steep slopes, thin soils, high amounts of precipitation and thus dominance of surface and subsurface flow in this catchment may explain the rapid response in runoff.During the first 6 years after liming there have been no significant effects on tree growth and vitality (crown density and crown colour). This experiment shows that liming of forested catchments may be a viable method to obtain long-term improvement in water quality and potential positive effects for acid-sensitive aquatic organisms.
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Authors
Tore SkrøppaAbstract
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Authors
Tove M. Østensvik Kaj Bo VeierstedAbstract
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Authors
Inge Stupak Møller Staffan JacobsonAbstract
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Authors
Olav Hogstad Vidar Selås Sverre KobroAbstract
No abstract has been registered