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.
2013
Authors
Imke De Widt Jan Van den Bulcke Christian Brischke Christian Welzbacher Antje Gellerich Susanne Bollmus Miha Humar Katharina Plaschkies Wolfram Scheiding Gry Alfredsen Joris Van AckerAbstract
No abstract has been registered
Authors
Marianne Stenrød Kirsten Tørresen Ole Martin Eklo Anne K. Falk Øgaard Gudbrand Lien Karen Refsgaard Valborg KvakkestadAbstract
No abstract has been registered
Authors
Marianne StenrødAbstract
No abstract has been registered
Authors
David Gadoury Arne Stensvand Belachew Asalf Tadesse R.C. Seem Anne Marte Tronsmo Kiersten BekosckeAbstract
No abstract has been registered
Authors
Arne StensvandAbstract
No abstract has been registered
Authors
Lise AanensenAbstract
No abstract has been registered
Abstract
To better understand the historic range of variability in the fire regime of Fennoscandian boreal forests we cross-dated 736 fire scars of remnant Scots pine (Pinus sylvestris L.) wood samples in a 3.6 km2 section of the Trillemarka-Rollagsfjell Reserve of south-central Norway. Using a kernel range application in GIS we spatially delineated 57 individual forest fires between 1350 and the present. We found a strong anthropogenic signal in the fire regime from 1600 and onwards: (i) infrequent variably sized fires prior to 1600 shifted to frequent fires gradually decreasing in size during the 1600s and 1700s, with only a few small fires after 1800; (ii) time intervals between fires and the hazard of burning showed substantial differences pre- and post-1600; (iii) fire seasonality changed from late- to early-season fires from the 1626 fire and onwards; and (iv) fire severity decreased gradually over time. Written sources corroborated our results, narrating a history where anthropogenic forest fires and slash-and-burn cultivation expanded with the increasing population from the late 1500s. Concurrently, timber resources increased in value, gradually forcing slash-and-burn cultivators to abandon fires on forest land. Our results strengthen and expand previous Fennoscandian findings on the anthropogenic influence of historic fire regimes.
Authors
Merete Dees May Bente Brurberg Anne Marte Tronsmo Arild Sletten Arne Hermansen Leslie A WannerAbstract
No abstract has been registered
Authors
Peter Waldner Anne Thimonier Maria Schmitt Aldo Marchetto Michela Rogora Oliver Granke Volker Mues Karin Hansen Gunilla Pihl-Karlsson Daniel lindra Nicholas Clarke Arne Verstraeten Andis Lazdins Claus Schimming Carmen Iacoban Antti-Jussi Lindroos Elena Iordanova Vanguelova Sue Benham Henning Meesenburg Manuel Nicholas Anna Kowalska Vladislav Apuhtin Ulle Nappa Zora Lachmanová Markus Neumann Albert Bleeker Morten Ingerslev Juan Molina Lars Vesterdal Walter Seidling Uwe Fischer Richard Fischer Martin LorenzAbstract
Atmospheric deposition to forests has been monitored in the frame of the ICP Forests programme with sampling and analyses of bulk and throughfall deposition at several hundred forested Level II plots for more than 15 years now. Current deposition of inorganic nitrogen and sulphate is highest in Northern Central Europe as well as in some regions in southern parts. In this study we compared linear regression and MannKendall trend analyses techniques. The choice of method had an influence on the number of trends identified as being significant. We showed that the minimal detectable trends can be estimated with the mean short term temporal variability of the deposition, which is to a large extent due to meteorological variations, such as the precipitation and circulation patterns. The overall decreasing trends for inorganic N and SO42- in the past decade of about 3% and 6% require time series of about 10 and 6 years respectively to detect a trend on a plot with statistical significance. Past reduction of human emission reduced atmospheric deposition of acidifying and eutrophying compounds. This could be confirmed due to the availability of long-term data series. However, further reductions are required to reduce deposition to forests below critical loads for the whole of Europe.
Abstract
No abstract has been registered