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.
2010
Forfattere
Per Otto Flæte Gry Alfredsen Kristian Bysheim Øyvind Eriksen Anders Qvale Nyrud Birger VenneslandSammendrag
Roundwood timber is raw material for numerous products. Wood based products are generally recognised as favourable regarding energy consumption and greenhouse gas (GHG) emissions. Several studies have shown that the net CO2 emissions can be reduced by using biofuels harvested from forests to substitute fossil fuels, and by using wood for building materials. Energy use and GHG emissions associated with producing roundwood can be influenced by a broad range of factors, such as silvicultural practice, topography, applied technology, forestland ownership, industrial structure, etc. This emphasizes the importance of using representative data for energy use and GHG emissions when calculating environmental impacts. The aim of this study was to investigate the embodied energy and life cycle GHG emissions of industrial softwood sawlogs in Norway, covering the production chain from tree seed to log yard. Analyses were based on activity data for the Norwegian forest sector for the year 2007. The results showed that the embodied energy and GHG emissions were low compared with the energy and CO2-equivalents stored in the roundwood (about 2%). The findings from this study can be used to inform future decisions on processes in forestry that should be focused on when planning actions to reduce energy consumption and GHG emissions. Additionally, as roundwood timber is raw material for numerous products the results can be useful when preparing documentation of environmental impacts, such as environmental product declarations, which are increasingly demanded by the market.
Forfattere
Jack D’Arcy E. Dunaevskaya Jim Treasurer Oddvar Ottesen Julie Maguire Nina Zhuravleva Åsbjørn Karlsen Celine ReboursSammendrag
The use of wrasse (F. Labridae) as biological cleaner-fish in the control of salmon lice has been demonstrated in a number of studies and they are successfully used on a large scale, with over two million wrasse being caught and stocked annually, in commercial salmon farms in Norway. Increasingly, efforts are being made to produce commercial stocks of wrasse for use on farms and an EU Northern Periphery Project entitled "Ecofish" has been established to develop the technologies for spawning and rearing the most promising cleaner fish, ballan wrasse, in captivity with dedicated production hatcheries will be established in Ireland, Norway and Scotland. This project will also look into the management of ballan wrasse in salmon cages in order to achieve the effective removal of lice. As part of the Ecofish work programme, this study examined the embryonic development of Ballan wrasse using material from a series of spawnings in Ireland and Norway. The overall development from fertilization to hatch was monitored and recorded and a standardized series of developmental stages are assigned, from zygote through cleavage, blastulation, gastrulation, segmentation to hatching: each with specific morphological landmarks. This standardization and the synchronization of the developmental stages will facilitate future studies with the species as we may be better able to compare the development rate of different geographic stocks and under different environmental conditions. The developing embryo was also staged at three different incubation temperatures; 10.5oC, 12.9 oC, and 16.5 oC with 50% hatched occurring at 171, 121 ands 96 hours post fertilisation respectively.
Sammendrag
Emerging compounds are continuously recognized in the environment and many are yet to be evaluated with regard to their environmental level, fate and subsequent biological effects. Most of these chemicals are present at trace level concentration but they can accumulate due to their persitency and special chemical properties. Municipal, hospital, agricultural sewage and leachates from deposits are the major entrance and distribution pathways in environment1-4. Identification and detection of potential sources of emerging compounds in waste water discharges was performed by GC-MS full scan analysis.
Sammendrag
Emerging compounds are continuously recognized in the environment and many are yet to be evaluated with regard to their environmental level, fate and subsequent biological effects. Most of these are high-volume-production chemicals which can accumulate due to their special chemical properties and persistency under ambient environmental conditions. Identification and detection of potential sources of emerging compounds in waste water discharges was performed by GC-MS full scan analysis.
Forfattere
Lars Ragnar SolbergSammendrag
Formålet med denne spesialgranskningen er å studere investeringer i landbruket. Den gjennomsnittlige bruttoinvesteringen har økt mye de siste årene, og i kjølvannet av denne økningen har det dukket opp mange spørsmål. Hovedspørsmålet i denne studien er hvordan den økonomiske utviklingen på bruk med investeringer, har vært i ettertid av investeringene. […]
Forfattere
Tor J. JohansenSammendrag
Det er ikke registrert sammendrag
Forfattere
Ulf Winther Yngve Ulgenes Morten Heide Lise Haug Christian Uhlig Hallvard Jensen Sten Ivar Siikavuopio Bjørn-Steinar SætherSammendrag
Det er ikke registrert sammendrag
Forfattere
Nina BrøggerSammendrag
Det er ikke registrert sammendrag
Forfattere
Lars Sandved DalenSammendrag
Nordmenn velger gran, selv om det er det juletreet som drysser mest. Her er tipsene som forlenger levetiden til juletreet ditt.
Forfattere
Trygve S. AamlidSammendrag
Foredrag ved IPM-seminarer i regi av Svenska Golfforbundet. (pdf av foredraget lastes bare opp ved registrering av Stockholm-møtet)