Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2006
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Sonja Klemsdal jihong liu clarke Arash Haghanizadeh Oleif ElenSammendrag
Det er ikke registrert sammendrag
Forfattere
Sonja Klemsdal A. Haghanizadeh Oleif ElenSammendrag
A fungal endochitinase gene, ech42 from Trichoderma atroviride, has been incerted in barley resulting in increased resistance towards Fusarium culmorum infection. The F. culmorum resistance was found to be stable when tested in the T3 generation
Forfattere
Bernard Slippers Rimvis Vasiliauskas Brett Hurley Jan Stenlid Michael J. WingfieldSammendrag
The Forestry and Agricultural Biotechnology Institute, University of Pretoria and the Department of Forest Mycology and Pathology, Swedish University of Agricultural Biotechnology Institute, Uppsala, Sweden are collaborating on a study of the Siricid-Fungal symbiosis, and its parasites. This project aims to address questions in two general areas, namely (a) the evolution and biology of mutualistic symbiosis and (b) the monitoring and control of wood inhabiting pests and pathogens that threaten biodiversity and forest production in introduced and native environments...
Forfattere
Andreas TreuSammendrag
Det er ikke registrert sammendrag
Sammendrag
A new compact wastewater treatment system for use in single houses has been constructed in eastern Norway. The system is based on the principles of sub-surface flow constructed wetlands using various types of Filtralite as filter media. It consists of a septic tank followed by an aerobic biofilter succeeded by an upflow saturated filter. The aerobic biofilter is essential to remove organic matter and achieve nitrification, while the upflow filter polishes the wastewater and removes microorganisms and phosphorus. During the first 3 years of operation, the system has show stable and high removal with the following average values measured from the outlet of septic tank to the outlet of the upflow filter: 97.0%-BOD7, 30%-N, 99.4%-P, and 70.8%-SS. No Escherichia coli or somatic coliphages have been detected in the effluent. Due to considerable removal of organic mater, nutrients, and pathogens, the effluent will not negatively affect water and soil ecosystems. The system requires low maintenance and is designed to remove phosphorus for 5 years before renewal of the upflow filter media. When saturated with phosphorus, the media is a suitable fertilizer for plant production. (c) 2006 Elsevier B.V. All rights reserved.
Forfattere
Audun KorsæthSammendrag
Det er ikke registrert sammendrag
Forfattere
Arild Vatn Lars Bakken Marina A. Bleken Ole Hans Baadshaug Haldor Fykse Lars E. Haugen Helge Lundekvam John Morken Eirik Romstad Per Kristian Rørstad Arne O. Skjelvåg Trine SognSammendrag
This paper presents a methodology for analyzing the effect of policies focused at reducing pollution from agriculture. Such a methodology must take into account that agricultural pollution is an effect of a large set of interacting processes, covers many different substances, and may vary substantially due to shifts in natural and economic conditions.
Sammendrag
Detailed analyses of thresholded ecological interactions can improve our understanding of the transition from aperiodic to periodic dynamics. We develop a threshold model of the population dynamics of outbreaking bark beetle populations that alternate between non-epidemic and epidemic behavior. The model involves accumulation of resources during low-density periods and depletion during outbreaks. The transition between the two regimes is caused by disturbance events in the form of major tree felling by wind. The model is analyzed with particular reference to the population dynamics of the spruce bark beetle (Ips typographus) in Scandinavia for which a comprehensive literature allows full parameterization. The fairly constant outbreak lengths and the highly variable waiting time between outbreaks that are seen in the historical records of this species agree well with the predictions of the model. The thresholded resource-depletion dynamics result in substantial variation in the degree of periodicity between stochastic realizations. The completely aperiodic tree colonizations are partly predictable when the timing of the irregular windfall events are known. However, the predictability of inter-outbreak periods is low due to the large variation of cases falling most frequently in the middle between the extremes of purely nonperiodic (erratic) and periodic (cyclic) fluctuations.
Forfattere
John Jensen Neal Sorokin Liesbet Dirven-van Breemen Tobias Bogolte Elisabeth Erlacher George Archibald Clark Ehlers Thomas ter Laak Thomas Hartnik Johan Bierkens Michiel Rutgers Miranda MesmanSammendrag
Det er ikke registrert sammendrag