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
Forfattere
J. Peter HallSammendrag
No abstract has been registered
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A.S. IsaevSammendrag
No abstract has been registered
Forfattere
Anthony A. Hopkin J. Peter HallSammendrag
No abstract has been registered
Forfattere
Maury E. Bredahl Nils Kristian Nersten Sjur Spildo PrestegardSammendrag
No abstract has been registered
Sammendrag
The objective structure of parameters of soil acidity and cation exchange properties of podzols affected by the emission of the Pechenganikel factory (the Kola Peninsula) is revealed. The multiparametric analysis of soil properties and the traditional correlation analysis complement one another. They point to the complex character of interrelations between soil properties in conditions of progressing human-induced acisification.
Forfattere
A. Kinnunen P. PulkkinenSammendrag
No abstract has been registered
Forfattere
Bjørn ØklandSammendrag
Information about larval ecology is fundamental in entomological research; however, in many insect species the larval habitat is still unknown. In the present project, Diptera insects were reared from various microhabitats and substrates of coniferous and deciduous forests of southern Norway. The material included 54 species that have not been reared earlier and 213 new species-microhabitat relationships. Many new records were found in dead wood of common tree species, such as Picea abies, Populus tremula and Fraxinus excelsior. Microhabitats associated with the root zone of windfelled trees showed the highest number of new species-microhabitat relationships.
Forfattere
Knute J. Nadelhoffer Bridget A. Emmett Per Gundersen O. Janne Kjønaas Chris J. Koopmans Patrick Schleppi Albert Tietema Richard F. WrightSammendrag
No abstract has been registered
Forfattere
Knute J. Nadelhoffer Bridget A. Emmett Per Gundersen O. Janne Kjønaas Chris J. Koopmans Patrick Schleppi Albert Tietema Richard Frederic WrightSammendrag
Humans have altered global nitrogen cycling such that more atmospheric N2 is being converted (\"fixed\") into biologically reactive forms by anthropogenic activities than by all natural processes combined. In particular, nitrogen oxides emitted during fuel combustion and ammonia volatilized as a result of intensive agriculture have increased atmospheric nitrogen inputs (mostly NO3 and NH4) to temperate forests in the Northern Hemisphere.Because tree growth in northern temperate regions is typically nitrogen-limited, increased nitrogen deposition could have the effect of attenuating rising atmospheric CO2 by stimulating the accumulation of forest biomass. Forest inventories indicate that the carbon contents of northern forests have increased concurrently with nitrogen deposition since the 1950s. In addition, variations in atmospheric CO2 indicate a globally significant carbon sink in northern mid-latitude forest regions. It is unclear, however, whether elevated nitrogen deposition or other factors are the primary cause of carbon sequestration in northern forests. Here we use evidence from 15N-tracer studies in nine forests to show that elevated nitrogen deposition is unlikely to be a major contributor to the putative CO2 sink in forested northern temperature regions.
Forfattere
Nils Kristian Nersten Sjur Spildo PrestegardSammendrag
No abstract has been registered