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.
2015
Abstract
No abstract has been registered
Authors
Mari Mette Tollefsrud Malgorzata Latalowa W.O. van der Knaap Christian Brochmann Christoph SperisenAbstract
No abstract has been registered
Abstract
The aim of this paper is to evaluate relationships between decomposition rates of Scots pine (Pinus sylvestris) and lodgepole pine (Pinus contorta var. contorta) needle litter in the late stage of decomposition (>30% accumulated mass loss), and the progressively changing concentrations of manganese (Mn), nitrogen (N), and acid unhydrolyzable residue (AUR), as well as mean annual temperature (MAT) and mean annual precipitation (MAP). Using available long-term decomposition studies on pine needle litter in a climate gradient in Sweden, we calculated annual mass loss and related to concentrations of Mn, N, and AUR at the start of each one-year period as well as to MAT and MAP. We investigated these relationships for (i) all data on annual mass loss combined and (ii) annual mass loss for five different decomposition categories as defined by accumulated mass loss. We found highly significant, negative, and dominant relationships between annual mass loss and N (R2 = 0.39) and AUR (R2 = 0.39), a slight but significant positive relationship to Mn (R2 = 0.08) and a significant negative relationship to MAT (R2 = 0.06). The relationships were dynamic, and changed with accumulated mass loss. The rate-dampening effect of N decreased to be a rate-enhancing effect at c. 60–80% accumulated mass loss. A similar trend was found for AUR, becoming rate-enhancing at 70–80% accumulated mass loss. For Scots pine needle litter the effect of MAT on mass loss decreased with increasing accumulated mass loss and changed to a rate-dampening effect at c. 50–70% accumulated mass loss. Mn showed a stimulating effect on mass loss rate in all categories whereas MAP showed no effect in this mainly boreal climatic gradient. The current approach indicates a method for detailed studies of rate-regulating factors for litter decomposition.
Authors
Inger Maren Rivrud Richard Bischof Erling Meisingset Barbara Zimmermann Leif Egil Loe Atle MysterudAbstract
No abstract has been registered
Authors
Graeme BellAbstract
No abstract has been registered
Authors
Monica Suarez Korsnes Reinert KorsnesAbstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Hanne Sickel Bolette Bele Ragnar Eltun Odd-Arild Finnes Gustav Fystro Knut Hovstad Marit Jørgensen Vibeke Lind Jørgen Todnem Håvard SteinshamnAbstract
No abstract has been registered
Authors
Claudia Bazzani Vincenzina Caputo Rudolfo M. Jr. Nayga Maurizio CanavariAbstract
No abstract has been registered
Authors
Anders Bryn Hans P. Kristoffersen Michael Angeloff Ingvild Nystuen Linda Aune-Lundberg Dag Terje Filip Endresen Christian Svindseth Yngve RekdalAbstract
No abstract has been registered