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.
1999
Abstract
No abstract has been registered
Authors
Gunnar Jansson P.H. StåhlAbstract
No abstract has been registered
Authors
G. ErikssonAbstract
No abstract has been registered
Abstract
Studies were undertaken in forest ecosystems of the northwestern Kola Peninsula, Russia and South-Varanger, Norway in the zone affected by the Pechenganikel smelter. The soils consist mainly of shallow sandy iron-humus-illuvial and iron-illuvial podzols on highly bouldery unsorted morainic deposits of course texture, fluvioglacial sands and bedrocks.Plant specimens were collected from 16 plots located at different distances from the source of emissions: Pinus sylvestris needles, bark and wood, dwarf shrub (Empetrum hermaphroditum, Vaccinium myrtillus and Vaccinium vitis-idaea ) leaves, wavy-hair grass (Deschampsia flexuosa), green mosses (Hylocomium splendens and Pleurozium schreberi) and lichens (Cladina rangifirina [Cladonia rangiferina], and Cladina stellaris [Physcia stellaris]) were collected at the end of the growing season.Results showed that the elemental composition of the dominants of the tree, grass-shrub, and moss layers was affected by the sulfur and heavy metals from the source of pollution. The content of nickel and copper in pine needles near the smelter exceeded control levels by an order of magnitude and the content of sulfur exceeded it twofold, reaching toxic levels.In addition to the direct input of pollutants from the atmosphere, soil contamination by nickel and copper within a 30 km radius of the smelter will have adverse effects on mineral nutrition of plants.It is concluded that the disturbance of biological cycles because of the active involvement of pollutants and the decreased availability of nutrients results in retardation of plant growth, a reduction in forest biomass and alterations in plant succession and species composition that leads to simplification and death of forest ecosystems.
Authors
Erik Christiansen V. R. Franceschi Nina Elisabeth Nagy Trygve Krekling A. A. Berryman Paal Krokene Halvor Solheim F. Lieutier W. J. Mattson M. R. WagnerAbstract
No abstract has been registered
Authors
M. Kurm Ü. TammAbstract
No abstract has been registered
Authors
Jan Svejgaard JensenAbstract
No abstract has been registered
Authors
Per Gerhard Ihlen B.J. CoppinsAbstract
Arthothelillm lirellans and A. orbilliferum are reported new to Scandinavia. Both species were found in Hordaland, western Norway. Their ecology and European distribution are discussed, and distribution maps presented.
Authors
Tore SkrøppaAbstract
No abstract has been registered
Abstract
The complex character of variations in acidity and cation exchange properties of forest podzols under the impact of atmospheric emissions from Pechenganikel plant in the Kola Peninsula was revealed using correlation and regression analyses. The high level of acidity and the depletion of upper horizons in exchangeable bases attest for the anthropogenic acidification of podzols in the affected zone of the plant.