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.
2017
Sammendrag
Siden forrige trykking av 3Q-instruks for flybildetolking, rapport 08/2004, er tolkingsinstruksen vært gjennom omfattende endringer, og en ny revidert samlende 3Q-instruks for flybildetolking på trykt papir har vært etterspurt. Det er siste gjeldende tolkingsinstruks, versjon 2011, som nå utgis med denne rapporten.
Foredrag – Data gir muligheter (Hvorfor sikker lagring og tilgang på data er viktig)
Ingvild Nystuen
Forfattere
Ingvild NystuenSammendrag
Det er ikke registrert sammendrag
Forfattere
Ingvild NystuenSammendrag
Det er ikke registrert sammendrag
Forfattere
Ingvild NystuenSammendrag
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Forfattere
Tove Vaaje-KolstadSammendrag
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Sammendrag
The study of structure and economics in Norwegian reindeer herding is commissioned by the Ministry of Agriculture and Food in order to better understand the relations between economic sustainability in reindeer herding and ownership-structure of ownership. Our conclusions are: (1) There is no clear connection between ownership structure and effectiveness in reindeer herding. The main reason is a strong, traditional capacity to cooperate flexibly irrespective of ownership structure. Co-operative groups, named siidas or districts, have long tradition in sami reindeer herding. The effect of flexible organizing is a rational decoupling of efficiency from distribution of ownership to reindeer. The organizational flexibility is also crucial for understanding the sami way of combining private ownership to animals with collective control of rights to exploit pasturage in order to prevent or mitigate “The Tragedy of the Commons”. (2) Values created are distributed exclusively to the benefit of ownership to reindeer with no specific rewards to labor inputs, i.e. practical herding. As flock sizes are strictly limited in response to temporarily destabilized flock numbers causing overexploitation of pasturage in Finnmark county in particular, rewarding large flock numbers adds to the conflict potential. The ceilings on flock sizes deprive small flock holders of natural flexibility for growth and competition on effective herding. The pattern of remuneration thus becomes a threat to future recruitment and long-term competence building.
Forfattere
Henrik Forsberg MathiesenSammendrag
Manglende registrering av eiere utgjør en vesentlig barriere for omsetning og næringsutvikling på utmarkseiendommer.
Forfattere
Dorothee Kolberg Lars Olav Brandsæter Göran Bergkvist Knut Asbjørn Solhaug Bo Melander Björn RingselleSammendrag
Quackgrass is a problematic agricultural weed in the temperate zones of the world and is difficult to control without herbicides or intensive tillage. However, it may be possible to control quackgrass with less environmental impact by combining multiple low-intensity control methods. A pot experiment was conducted in July to October 2012 and repeated in June to September 2013 to investigate the effect of rhizome fragmentation, competition from white clover, shoot-cutting frequency, and cutting height on quackgrass. Rhizome fragmentation was expected to result in more, but weaker, quackgrass shoots that would be more vulnerable to shoot cutting and competition. However, by 20 d past planting, rhizome fragmentation did not change the total number of quackgrass shoots per pot, because an increase in main shoots was offset by a decrease in tiller numbers. Rhizome fragmentation did not reduce quackgrass biomass acquisition during the experimental period. Although rhizome fragmentation did reduce total fructan content, it did not enhance the effect of clover competition, shoot-cutting frequency, or shoot-cutting height. Clover competition by itself reduced quackgrass shoot numbers by 72%, rhizome biomass by 81%, and belowground fructan concentration by 10 percentage points, compared with no competition. The more frequently quackgrass shoots were cut, the less biomass quackgrass acquired, and a high shoot-cutting frequency (each time quackgrass reached 2 leaves) resulted in a lower belowground fructan concentration than a low shoot-cutting frequency (at 8 leaves). However, in pots without competition, a higher shoot-cutting frequency resulted in more quackgrass shoots. A lower shoot-cutting height (25 mm) had more impact when shoot cutting was more frequent. In conclusion, rhizome fragmentation did not reduce the number of quackgrass shoots or rhizome biomass, but competition from white clover, a high shoot-cutting frequency, and a low shoot-cutting height strongly suppressed quackgrass biomass and fructan acquisition.
Forfattere
Ingrid TengeSammendrag
Det er ikke registrert sammendrag
Forfattere
Ingrid TengeSammendrag
Det er ikke registrert sammendrag