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.
2012
Authors
J. Limpens G. Granath R Aerts M. M. P. D. Heijmans L. J. Sheppard L. Bragazza B. L. Williams H. Rydin J. Bubier T. Moore L. Rochefort E. A. D. Mitchell A Buttler L. J. L. van den Berg U Gunnarsson AJ Francez R Gerdol M. Thormann P. Grosvernier M. M. Wiedermann M. B. Nilsson M. R. Hoosbeek S. Bayley Jørn-Frode Nordbakken M. P. C. P. Paulissen S. Hotes A. Breeuwer M. Ilomets H. B. M. Tomassen I. Leith B. XuAbstract
Peat bogs have accumulated more atmospheric carbon (C) than any other terrestrial ecosystem today. Most of this C is associated with peat moss (Sphagnum) litter. Atmospheric nitrogen (N) deposition can decrease Sphagnum production, compromising the C sequestration capacity of peat bogs. The mechanisms underlying the reduced production are uncertain, necessitating multifactorial experiments.•We investigated whether glasshouse experiments are reliable proxies for field experiments for assessing interactions between N deposition and environment as controls on Sphagnum N concentration and production. We performed a meta-analysis over 115 glasshouse experiments and 107 field experiments.•We found that glasshouse and field experiments gave similar qualitative and quantitative estimates of changes in Sphagnum N concentration in response to N application. However, glasshouse-based estimates of changes in production – even qualitative assessments – diverged from field experiments owing to a stronger N effect on production response in absence of vascular plants in the glasshouse, and a weaker N effect on production response in presence of vascular plants compared to field experiments.•Thus, although we need glasshouse experiments to study how interacting environmental factors affect the response of Sphagnum to increased N deposition, we need field experiments to properly quantify these effects.
Authors
Ragnhild Aabøe Inglingstad Binyam Sime Dagnachew Tove Gulbrandsen Devold Andrea Criscione Bernardo Valenti Siv Borghild Skeie Håvard Steinshamn Gerd Elisabeth VegarudAbstract
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Lampros LamprinakisAbstract
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Norwegian goat milk production is based on summer grazing on diverse forest or alpine rangeland, and the quality of these pastures is important for milk quantity and quality. We used n-alkanes and long chained alcohols found in plant waxes as markers to estimate diet composition in goats grazing on a heterogeneous rangeland during two periods in summer; early (beginning of July) and late (end of August). Some of the goats were fitted with GPS collars that recorded their position. Preliminary results show a diverse diet, where ferns, sedges, blueberry (Vaccinium myrtillis) and birch (Betula pubescens) were preferred in early summer. In late summer the diet was particularly diverse, coinciding with a general decline in plant quality.
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John Marshall BrydenAbstract
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Christian Guido Bruckner Charlotte Rehm Hans-Peter Grossart Peter, G. KrothAbstract
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Authors
Casper Claudi Rasmussen Erlend NybakkAbstract
This study examines the relationship between customer orientation, innovativeness, autonomy, risk taking, growth willingness and growth in low technology micro-firms. A survey was sent to 3000 CEOs in the Norwegian wood industry and resulted in 514 usable respondents. Customer orientation, innovativeness, risk taking, autonomy and growth were conceptualized and analyzed as first order constructs using confirmatory factor analysis and OLS regression. The findings showed that customer orientation, innovativeness and autonomy have a significant impact on growth in micro-firms. The study found no support for interaction effects between innovativeness, autonomy, risk taking and customer orientation, however the interaction effect between customer orientation and autonomy was significant at the 10% level.