Hopp til hovedinnholdet

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.

2008

Sammendrag

This study compares diversity an abundance of spiders in barley with different sub crops and in young ley. Spiders were sampled from 14 cereal and 4 grass-clover fields distributed within three different sites in eastern and central Norway. Two sites were long term experimental field trials and one was an organically managed farm. Pitfall traps were used to sample spiders from May to Sept 2004. In total 4130 spiders were found. The density and number of species varied between fields. More individuals of both Linyphiidae and Lycosidae were trapped in fields with leys compared to fields with cereals. There was no clear difference in total density of spiders according to type of sub-crop, but more Lycosidae were found in cereal fields undersown with ley than in fields undersown with ryegrass. A higher density of Linyphiidae was found in the cereal fields at the farm than at the two experimental sites, whereas the frequency of Lycosidae was about the same at the three sites. Only minor differences in number of species were found, but an ordination technique of multivariate analysis reveals differences in the spider community structures.

Til dokument

Sammendrag

Norsk matsektor blir i økende grad internasjonalisert. Sektoren har stor og voksende marin mateksport, økende import, en stor del konkurranseutsatt foredlingsindustri og stadig strammere internasjonale forpliktelser rundt vår matpolitikk. Utviklingen fortsetter, men tempoet er usikkert. Det norske matsystemet, næring og forvaltning, kan i mellomtiden velge å investere og omstille for å øke konkurranseevnen. Men det er også mulig å avvente endringer i internasjonale forpliktelser og fortsette å nyte fordelene av betydelig gjenværende skjerming og nasjonalt handlingsrom. På kort sikt står valget mellom krevende omstilling eller relativt stabil næringsutvikling med en ambisiøs sektorpolitikk. På lang sikt kan det dreie seg om evnen til å opprettholde et bredt sammensatt, norsk næringsmiljø med selvstendig utviklingsevne. Tilpasningene i det norske matsystemet skjer i samspill mellom næring, politikk og forvaltning. God koordinering av politikk og næringstilpasning øker sjansen for å videreutvikle matindustriens ressurser. Evnen til samhandling har tradisjonelt vært velutviklet. Internasjonaliseringen av matsektoren setter imidlertid allerede den nasjonale samhandlingen på prøve. Interessekonfliktene innad i matnæringen kommer til syne for eksempel i vurderingen av handels- og konkurransepolitikken og landbrukssamvirkets rolle som iverksetter av sektorpolitikk. En selvstendig, norsk satsing på internasjonalt konkurransedyktig matindustri vil være et nytt og annerledes siktemål for matpolitikken og deler av industrien. Spørsmålet er ikke bare om nytten er tilstrekkelig, men også om det norske matsystemet har evne til i tide å håndtere en ny agenda for norsk matsektor.

Sammendrag

Foredraget gir en oversikt over igangværende og avslutta prosjekter og de viktigste resultater.

Sammendrag

An easier penetrability and a more even uptake of wood protection agents is aimed for the two most common wood species in Europe, namely Norway spruce (Picea abies) and Scots pine heartwood (Pinus sylvestris), particularly when there is a great difference in absorption behavior of sapwood and heartwood. Microwave conditioning can improve permeability, reduce density and heat conductivity and change dimensional stability of wood. It could also improve the permeability of refractory wood species. This study deals with the evaluation of different parameters of a microwave treatment and their influence on the penetrability of water during dipping and impregnation of Scots pine heartwood and Norway spruce. Microwave irradiation lead to an increased water uptake after a submersion test, and after vacuum and pressure impregnation of the tested samples. This effect was more pronounced for Scots pine heartwood samples than for spruce wood samples. A short process with high microwave energy is recommended in order to reduce the development of large cracks but to increase the sorption behavior due to small checks in wood.

Sammendrag

Norway spruce (Picea abies) is widely used not only in Norway but in many other European countries. Due to its refractory behavior after drying it is difficult to impregnate with wood protecting agents that makes it suitable for outside applications. In this research spruce wood samples are exposed to microwave radiation in order to improve the impregnability. The strength properties are evaluated after both microwave and impregnation treatment. The results show, that microwave treatment on spruce wood samples improves the uptake of impregnation agents. With increasing energy absorption due to microwave radiation the impregnability is improved. No differences could be found between the microwave treatments in radial or tangential direction, neither in uptake of wood preservative nor in strength properties. The uptake of impregnation agents in spruce wood is increased by using a pre-treatment with microwave radiation. However, some microwave treatments lead to cracks and a reduction in tangential strength. Most of the values of the process parameters used were obviously too high, which resulted in a distinct crack development.

Sammendrag

Skjemt silo og fôrrester ble lagt i kompost og prøvd ut som plantebed for ulike sorter squash. Plantene utviklet seg godt og ga tilfredsstillende avling.

Sammendrag

En gjennomgang av standardene for fire forebyggende tiltak mot rovviltskader: "tidlig sanking", "beredskapsarealer", "bruk av vokterhund" og "elektriske gjerder til rovviltsikring". Standardene er utarbeidet av Norsk viltskadesenter ved Bioforsk Nord Tjøtta og godkjent av Direktoratet for naturforvaltning.

Til dokument

Sammendrag

The Second Norwegian National Report on PGR describes the current state of plant genetic resources (PGR) in Norway. Changes and developments since the first national PGR report in 1996 was issued are commented in particular. The most important innovation over the last ten years has been the establishment of both a national programme for conservation and use of plant genetic resources in 2001 and the Norwegian Genetic Resource Centre in 2006. This has significantly increased the resources allocated to conservation and use of plant genetic resources in Norway, the scope of PGR activities has been broadened and the public awareness and stakeholders involvement has increased considerably. The responsibility for ex-situ conservation of Norwegian germplasm is shared between The Nordic Genetic Resource Centre (NordGen, formerly the Nordic Gene Bank) and The Norwegian Genetic Resource Centre. The seed collections of varieties and landraces of edible agricultural and horticultural crops at NordGen have been extended and better documented and characterised since 1996. […]