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.
2026
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Ivar Horneland KristensenSammendrag
Viktig forskning skjer ikke bare ved universitetene, den skjer også i instituttene — hver eneste dag. I regjeringens gjennomgang av instituttsektoren er det viktig å anerkjenne forskningsinstituttenes viktige rolle i omstillingen av Norge.
Forfattere
Ivar Horneland KristensenSammendrag
44 milliarder kroner er prisen for norsk deltakelse i EUs neste forskningsprogram. Men regningen for å la være er langt høyere: tapt konkurransekraft, svekket beredskap og et Norge som stiller bakerst i køen når Europa investerer seg ut av usikkerhet.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Christine Gulbrandsen Ivar Horneland Kristensen Guri MelbySammendrag
Ivar H. Kristensen ber politikerne samle seg - og viser både til Finland og norsk forsvarspolitikk som mulig inspirasjon.
Sammendrag
Nordre Follo kommune trenger konkrete tiltaksplaner for restaurering av naturtyper som er viktige for biologisk mangfold. Med utgangspunkt i kartfestet informasjon valgte vi lokaliteter ut fra rødlistestatus, tilstand og naturmangfold, kobling til nasjonale og regionale mål, mulighet for synergier mellom nærliggende lokaliteter og sannsynlighet for å lykkes. Tiltakene ble i hovedsak avgrenset til kommunal grunn. Prioriterte naturtyper var Rik vierstrandskog, Rik gransumpskog, Rik svartorsumpskog, Semi-naturlig eng og Dammer. Etter feltbefaringer la vi i tillegg vekt på områdetiltak som også omfatter ikke-kartlagt natur mellom lokalitetene. Rapporten gir tiltaksplaner for: habitattiltak for storsalamander og andre amfibier ved Tverrveien-Greverud, etablering av temporære dammer og pytter, hydrologisk restaurering og utvikling av sumpskog ved Droplemyra, områdetiltak i flere naturtyper ved Vevelstad-Langhus, skogrestaurering i granskog mot Østmarka nasjonalpark og tiltak i gammel furuskog på Rikeåsen. Tiltakene er beskrevet med målsetting, indikatorer for måloppnåelse, arbeidsomfang og for flere av dem kostnadsoverslag. De fleste tiltakene er enkle å gjennomføre og kan overføres til andre lokaliteter med samme naturtyper og forringende faktorer. For å nå nasjonale mål for naturrestaurering er det behov for en betydelig oppskalering.
Sammendrag
This report reviews labour representation in mathematical programming models of cattle farms and examines how variable labour costs affect optimal production plans in OPTINORFARM, a Norwegian whole farm optimisation model. Labour is a costly, time-specific and heterogeneous resource: requirements vary by enterprise, farm size, technology and season. Family labour has an opportunity cost through competition with leisure and off-farm work. Existing models differ substantially in their treatment of labour and the coefficients used. We incorprated coefficients for labour requirements varying with livestock numbers and forage area into the OPTINORFARM model, and sensitivity analyses applied hourly labour costs of NOK 0–500. Under a binding milk quota, higher labour costs favoured fewer, higher-yielding dairy cows. At NOK 500, optimal annual yield was 11,000 kg of energy-corrected milk per cow, versus 8,000 kg with no variable labour cost. Higher labour requirements per cow with conventional rather than automatic milking strengthened incentives for higher yields. Results also depended on feed and beef prices, returns from alternative land uses and access to purchased calves for beef production. In suckler-cow farming, raising hourly labour costs from NOK 0 to 500 reduced slaughter ages from 20 to 14 months for bulls and from 17 to 14 months for heifers. The results are based on the case farms studied, but similar responses may be expected on other farms under comparable conditions. Including labour costs reduce the risk of favouring labour-intensive production plans. Labour availability should also be represented to assess whether the production plans are feasible.
Sammendrag
In Norway, plum fruit is sold for fresh consumption in a similar way as sweet cherry for a high price. Different treatments were tested to ensure high quality at the consumer end. The fruit is normally picked with a range in ripeness. At packaging grading the fruit in different maturity classes for intended sale in shorter (Ripe+) and longer channels (Ripe-) has been partially implemented in the industry. As a further improvement, application of 1-methylcyclopropene (1-MCP) was tested on fruit of the two ripeness categories of two cultivars. After a period of cold storage and simulated shelf-life for two days at 20°C fruits were tasted by a sensory panel. Fruit quality and fungal decay were assessed both after cold storage and simulated shelf-life. It was clear that taste of less ripe fruit was associated with firmer fruit, more acidity and greener taste, and quality of riper fruit was associated with sweetness, higher colour value, softer texture and a higher taste intensity. The panel found that treated Ripe- fruit had a greener taste and flavour and were less juicy and less sweet. In general, quality analysis of less ripe plum fruit of both cultivars showed that they had higher content of acids, were firmer, and had less cover colour after storage compared to riper fruits. Also, treatment with 1-MCP impacted firmness, colour, and acidity. However, the treatment effect was different depending on cultivars and years. In 2022, the effect of 1-MCP was seen for both ripeness categories of ‘Reeves’, but only for Ripe- fruit in 2023. There was no effect of 1-MCP treatments on ‘Mallard’ in 2022, however, there was a slight effect of 1-MCP on firmness, acids and cover colour after self-life test for less ripe plum fruit in 2023. The Ripe+ fruit developed 2-10 times more fungal fruit decay than less ripe fruit. 1-MCP had no effect on development of fungal fruit decay. Preliminary conclusion was that management of fruit maturation is more effective than 1-MCP application in securing consumer end quality.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Annbjørg KristoffersenSammendrag
Det er ikke registrert sammendrag