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.
1995
Authors
Albert Tietema Richard Frederic Wright Kai Blanck M. Bredemeier Bridget A. Emmett Per Gundersen H. Hultberg O. Janne Kjønaas Filip Moldan J.G.M. Roelofs Patrick Schleppi Arne Olav Stuanes N. van BreemenAbstract
In large regions of Europe and eastern North America atmospheric deposition of inorganic nitrogen (N) compounds has greatly increased the natural external supply to forest ecosystems. This leads to N saturation, in which availability of inorganic N is in excess of biological demand and the ecosystem is unable to retain all incoming N. The large-scale experiments of the NITREX project (NITRogen saturation EXperiments) are designed to provide information regarding the patterns and rates of responses of coniferous forest ecosystems to increases in N deposition and the reversibility and recovery of impacted ecosystems following reductions in N deposition.The timing of ecosystem response generally followed a hypothesized cascade of response. In all sites N outputs have responded markedly but to very different degrees within the first three years of treatment. Within this time significant effects on soil processes and on vegetation have only been detected at two sites. This delayed response is explained by the large capacity of the soil system to buffer the increased N supply by microbial immobilization and adsorption. We believe that this concept provides a framework for the evaluation and prediction of the ecosystem response to environmental change.
Authors
Erik Christiansen Alan A. BerrymanAbstract
No abstract has been registered
Authors
Tore SkrøppaAbstract
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Authors
Hans Fredrik Hoen Birger SolbergAbstract
No abstract has been registered
Authors
Finn Roll-Hansen Helga Roll-HansenAbstract
No abstract has been registered
Authors
Heli Viiri Kim von WeissenbergAbstract
No abstract has been registered
Authors
Anu Susi Ari Pappinen Kaija Keinonen-Mettälä Kim von WeissenbergAbstract
No abstract has been registered
Authors
Darrell W. Ross Halvor SolheimAbstract
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Authors
Franck Brignolas François Lieutier A. YartAbstract
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Authors
Scott Michael Brainerd Jan-Olof Helldin Erik R. Lindström Erlend Rolstad Jørund Rolstad Ilse StorchAbstract
No abstract has been registered