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.
2016
Authors
Kjell AndreassenAbstract
No abstract has been registered
Authors
Marta Camino-Serrano Elisabeth Graf Pannatier Sara Vicca Sebastiaan Luyssaert Mathieu Jonard Philippe Ciais Bertrand Guenet Bert Gielen Josep Peñuelas Jordi Sardans Peter Waldner Sophia Etzold Guia Cecchini Nicholas Clarke Zoran Galic Laure Gandois Karin Hansen Jim Johnson Uwe Klinck Zora Lachmanová Antti-Jussi Lindroos Henning Meesenburg Tiina M. Nieminen Tanja G. M. Sanders Kasia Sawicka Walter Seidling Anne Thimonier Elena Vanguelova Arne Verstraeten Lars Vesterdal Ivan A. JanssensAbstract
Dissolved organic carbon (DOC) in surface waters is connected to DOC in soil solution through hydrological pathways. Therefore, it is expected that long-term dynamics of DOC in surface waters reflect DOC trends in soil solution. However, a multitude of site studies have failed so far to establish consistent trends in soil solution DOC, whereas increasing concentrations in European surface waters over the past decades appear to be the norm, possibly as a result of recovery from acidification. The objectives of this study were therefore to understand the long-term trends of soil solution DOC from a large number of European forests (ICP Forests Level II plots) and determine their main physico-chemical and biological controls. We applied trend analysis at two levels: (1) to the entire European dataset and (2) to the individual time series and related trends with plot characteristics, i.e., soil and vegetation properties, soil solution chemistry and atmospheric deposition loads. Analyses of the entire dataset showed an overall increasing trend in DOC concentrations in the organic layers, but, at individual plots and depths, there was no clear overall trend in soil solution DOC. The rate change in soil solution DOC ranged between −16.8 and +23 % yr−1 (median = +0.4 % yr−1) across Europe. The non-significant trends (40 %) outnumbered the increasing (35 %) and decreasing trends (25 %) across the 97 ICP Forests Level II sites. By means of multivariate statistics, we found increasing trends in DOC concentrations with increasing mean nitrate (NO3−) deposition and increasing trends in DOC concentrations with decreasing mean sulfate (SO42−) deposition, with the magnitude of these relationships depending on plot deposition history. While the attribution of increasing trends in DOC to the reduction of SO42− deposition could be confirmed in low to medium N deposition areas, in agreement with observations in surface waters, this was not the case in high N deposition areas. In conclusion, long-term trends of soil solution DOC reflected the interactions between controls acting at local (soil and vegetation properties) and regional (atmospheric deposition of SO42− and inorganic N) scales.
Authors
Marta Camino-Serrano Elisabeth Graf Pannatier Sara Vicca Sebastiaan Luyssaert Mathieu Jonard Philippe Ciais Bertrand Guenet Bert Gielen Josep Peñuelas Jordi Sardans Peter Waldner Sophia Etzold Guia Cecchini Nicholas Clarke Galić Galic Laure Gandois Karin Hansen Jim Johnson Uwe Klinck Zora Lachmanová Antti-Jussi Lindroos Henning Meesenburg Tiina M. Nieminen Tanja G.M. Sanders Kasia Sawicka Walter Seidling Anne Thimonier Elena Vanguelova Arne Verstraeten Lars Vesterdal Ivan A. JanssensAbstract
No abstract has been registered
Authors
Arne Melchior Ivar Alvik Tarjei Bekkedal Klaus Mittenzwei Ivar Pettersen Leo A. Grünfeld Marcus Gjems Theie Gabriel Felbermayr Frode Veggeland Hege MedinAbstract
This study analyzes TTIP, its implications for Norway and Norway’s trade policy choices. TTIP will hardly be concluded under Obama's presidency, but the agreement could become a reality within a few years. TTIP aims at comprehensive cooperation in the regulatory area. In the short term there will be limited harmonization of standards but regulatory cooperation between different systems. In the long term, the goal is stronger cooperation in the regulatory area. TTIP will from what we know not lead to a lowering of European health regulations or a "race to the bottom". If TTIP is realized and Norway remains outside, the EEA Agreement will be little affected and the overall economic impact is moderate. If Norway joins TTIP, there will be a significant real income gain, with estimates ranging from 2236 to 6772 NOK per capita in the various scenarios. There is considerable variation across sectors. With Norway outside TTIP there will be a moderate negative impact for a majority of the sectors, especially some manufacturing sectors that face tougher competition in the EU and USA export markets. The oil industry will benefit from increased demand and higher prices. If Norway joins TTIP, a clear majority of industries will benefit; especially business services and a number of other service industries. The public sector gains from TTIP, mainly due to cheaper inputs. TTIP will contribute to the dismantling of import protection for Norwegian agriculture and without compensating measures, production and employment will be reduced. TTIP will still allow some import protection and this margin of maneuver, which depends on future negotiations, is important for the outcome. With a larger margin of manoeuvre and unchanged budgetarty support, most of Norway’s agriculture can be maintained. With less margin of manoeuvre, it will be more challenging. Norwegian accession to TTIP may occur in the form of a standard trade agreement in which Norway or EFTA are formally equal to the EU and the United States. Alternatively, Norway may participate in a European pillar as in today's "Open Skies" agreement on air traffic. If TTIP succeeds in establishing comprehensive regulatory cooperation, the latter solution is most likely. Such a solution implies that Norway will become more closely integrated with the European Union also in trade policy towards third countries. Norwegian entry into TTIP implies that we have to accept the established rules and negotiate bilaterally with the EU and the USA on market access. The negotiations with the USA will apply to all aspects of market access, while negotiations with the EU will apply only to areas in which the EEA agreement is not already deeper. The negotiations with the EU for TTIP entry will thus include, among other issues, tariffs for seafood and agriculture. As an alternative to membership in TTIP, Norway or EFTA may initiate a trade agreement with the USA. Such an agreement would likely be less extensive in the regulatory area. Such an agreement will also provide an economic gain for Norway, but less than accession to TTIP. For Norway as a whole, accession to TTIP creates a real income gain between 12.5 and 35 billion NOK according to various scenarios, while a free trade agreement with the United States results in a gain of about 7.4 billion NOK. TTIP also includes negotiations on so-called Investor-State Dispute Settlement (ISDS), whereby foreign-owned companies can sue a state if they are unfairly or inappropriately treated. Such rights also exist in national law but international tribunals have to some extent extended the interpretation of what is considered unfair. The European Union has proposed a solution in TTIP with a permanent court as well as rules that discipline the interpretation of the principles, and thus avoids that ISDS unduly interferes into the states’ "right to regulate". This and many other issues are analysed in this report and six background papers.
Abstract
No abstract has been registered
Authors
N.A. Peres C. Fraisse Z. Guan G. Schnabel W. Turechek David Gadoury W. Wilcox R.C. Seem R Martin Arne StensvandAbstract
No abstract has been registered
Authors
Lise Dalsgaard Holger Lange Line Tau Strand Ingeborg Callesen Signe Kynding Borgen Jari Liski Rasmus AstrupAbstract
Soil organic carbon (C), accumulated over millennia, comprise more than half of the C stored in boreal and temperate forest landscapes. We used the Norwegian national forest inventory and soil survey network (n = 719, no deep organic soils) to explore the validity of a deterministic model representation of this pool (Yasso07). We statistically compared simulated and measured soil C stocks and related differences (measured – simulated) to site factors (drainage, topography, climate, vegetation, C-to-N ratio, and soil classification). Median C stocks were 5.0 kg C·m−2 (model) and 14.5 kg C·m−2 (measurements). Soil C differences related to site factors (r2 of 0.16 to 0.37). For Brunisols, Gleysols, and wet Organic soils, differences related primarily to topographic wetness. For Regosols, Podzols, and Dystric Eluviated Brunisols, they related to climate, profile depth, and, in some cases, drainage class and site index. We argue that soil moisture regimes in our study area overrule tree productivity effects in the determination of soil C stocks and present conditions for soil formation that the model cannot (and does not explicitly) account for. These are processes such as humification and podsolization that involve eluviation and illuviation of dissolved organic C (DOC) with sesquioxides to form spodic B horizons and carbon enrichment due to hampered decomposition in frequently anoxic conditions.
Authors
Melissa MagerøyAbstract
No abstract has been registered
Authors
Marcos Viejo Elena Carneros Hugh Cross YeonKyeong Lee Igor A. Yakovlev Carl Gunnar Fossdal Jorunn Elisabeth OlsenAbstract
No abstract has been registered
Authors
Marcos Viejo Elena Carneros Hugh Cross YeonKyeong Lee Igor A. Yakovlev Carl Gunnar Fossdal Jorunn Elisabeth OlsenAbstract
No abstract has been registered