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.
2009
Abstract
No abstract has been registered
Abstract
Growth of Norway spruce (Picea abies) trees and nitrogen deposition were analysed at about 500 forest plots throughout Norway in six fiveyear periods from 1977 to 2006. Growth was calculated from five repeated calliper measurements of all trees during this period and using treering series from increment cores of a subsample of trees. From the growth data a `relative growth` variable was extracted, being the deviation in % between observed and expected growth rates. The expected growth was estimated from growth models based on site productivity, age and stand density at each plot. The plots were categorized into four age classes. The nitrogen deposition was estimated for each plot for the same five year periods by geographical interpolation of deposition observations at monitoring stations made by the Norwegian Institute for Air Research. Nitrogen deposition from 1977 to 2006 ranged from 1 to 24 kg/ha/yr at the study plots, with about 15 kg/ha/yr in the southernmost region and 3 kg/ha/yr in the northern region of Norway. For the entire 30year period we found a long term relationship between growth and nitrogen deposition, corresponding to a forest growth increase of 0.7% per kg total nitrogen deposition per hectare and year (r2 = 0.13). This is in line with studies carried out on other data sets and for shorter time periods. This apparent fertilizing effect was most pronounced for the youngest forest, while the effect was weak for the oldest forest. The growth increase was observed in the southernmost part of Norway, the region with the highest nitrogen deposition. However, the relationship between nitrogen deposition and growth varied considerably between the time periods. In two of the periods the relationship was slightly negative: these periods corresponded well with summer droughts occurring in the southernmost part of Norway. Drought, as well as other climatic factors, will influence the shortterm variations in forest growth and may obscure the fertilizing effect of nitrogen deposition in some periods. In conclusion, nitrogen deposition has most likely increased growth in Norway spruce in southern Norway. However, our study also shows that inferences from such correlative studies should be drawn with care if the growth period is shorter than 10–15 years because climatic factors produce temporal variations in the relationship between nitrogen deposition and forest growth.
Authors
Laura Jaakola M. Paassilita M. Suokas Inger Martinussen K. Antonius Anders Åkerström A. Bjarnadottir U. Oskarsson Anja Hohtola A. Pirttilä S. Moisio Olavi Junttila Ulla Bång Hely HäggmanAbstract
Wild berries are a characteristic part of Northern nature and a particular speciality of Nordic countries. Wild berries are also a rich and valuable resource that has not yet been exploited in a satisfactory level. Approximately 90 – 95 % of the whole wild berry crop yield is left unpicked in the Nordic forests every year. The challenges of wild berry utilization are similar in Nordic countries - the logistics of berry picking including traceability, fragmented sector structure as well as the high share of unprocessed raw material in export. The Nordic project focusing on bilberry (Vaccinium myrtillus) “Bilberry: Towards functional food markets” (2007 – 2009) is a part of the New Nordic Food programme funded by the Nordic Innovation Centre. The programme aims to enhance cooperation and innovation among companies that utilize the natural resources of the Nordic countries. The aim of the project is to improve wild berry production and utilization in the Nordic and global market. To achieve this goal a network between the Nordic experts presenting the different fields of the wild berry sector has been established. The project has focused on marketing research, quality issues, biodiversity and the traceability of wild berries; especially the bilberry. The results of the marketing survey were published in November 2008. The aim of the survey was to generate an overall picture of the companies working with wild berries in Nordic countries and to gather information on the existence and willingness of the berry companies to cooperate in wild berry supply, logistics, marketing and research and development. According to the results, a general agreement for the need of increased cooperation at the Nordic level was highlighted.
Book review – Nordic Landscapes: Region and Belonging on the Northern Edge of Europe
Sebastian Eiter
Authors
Sebastian EiterAbstract
No abstract has been registered
Authors
B. D. Jensen L. Munk Anne-Marte Tronsmo Leif Sundheim M. Pirhonen A-L. Laine H. Sverrison A. Djurle H. Friberg J. YuenAbstract
No abstract has been registered
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Anthony D. Fox Sverre Kobro Aleksi Lehikoinen Peter Lyngs Risto A. VäisänenAbstract
No abstract has been registered
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Adam ParuchAbstract
No abstract has been registered
Authors
Ole Martin Eklo Marit Almvik Randi Bolli Trond Børresen Terje Haraldsen Lars Egil Haugen Roger Holten Gunnhild RiiseAbstract
This is a final report for the project Norwegian Scenarios II, part two, that has been performed in collaboration between Bioforsk Plant Health and Plant Protection, The Norwegian University of Life Sciences and the Norwegian Food Safety Authority. The aim of the project was to establish Norwegian scenarios for the models PRZM and MACRO and to use them for approval of new pesticides.
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No abstract has been registered
Authors
Elena A. Ignatova Hans Haavardsholm Blom D.V. Goryunov Irina A. MilyutinaAbstract
A phylogenetic analysis of ITS1-2 sequences from 117 specimens of Schistidium from Eurasia and North America revealed several new taxa within the genus. Schistidium sibiricum Ignatova & H.H. Blom, S. obscurum H.H. Blom, Köckinger & Ignatova, S. tenuinerve Ignatova & H.H. Blom, S. bakalinii Ignatova & H.H. Blom, S. echinatum Ignatova & H.H. Blom and S. succulentum Ignatova & H.H. Blom are described as new for science. Three new combinations are made: S. canadense (Dupr.) Ignatova & H.H. Blom, S. abrupticostatum (Bryhn) Ignatova & H.H. Blom and S. konoi (Broth.) Ignatova & H.H. Blom. Illustrations are provided for new species. A preliminary key for the identification of Schistidium species known in Russia is given.