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.
2011
Forfattere
Audun Helge Nerland Åshild Kristine Andreassen Per Brandtzæg Merethe Aasmo Finne Askild Lorentz Holck Juho Junttila Heidi Sjursen Konestabo Richard Meadow Arne Mikalsen Kaare Magne Nielsen Hilde-Gunn Opsahl Sorteberg Rose VikseSammendrag
Det er ikke registrert sammendrag
Forfattere
Aksel Bernhoft Monica Sanden Åshild Kristine Andreassen Rose Vikse Per Brandtzæg Merethe Aasmo Finne Askild Lorentz Holck Olavi Junttila Heidi Sjursen Konestabo Richard Meadow Arne Mikalsen Kaare Magne Nielsen Hilde-Gunn Opsahl Sorteberg Audun Helge NerlandSammendrag
Det er ikke registrert sammendrag
Sammendrag
Skogsfuglforskningen på Varaldskogen startet opp i 1979 etter en periode med svært lave bestander over hele landet. Etter 25 år med intensivt bestandsskogbruk mente mange at flatehogsten var hovedårsaken til bestandsnedgangen. På Varaldskogen var allerede halvparten av den gamle plukkhogde skogen avvirket, spesielt hadde det gått hardt utover de frodige granliene før staten tok over eiendommen etter Billerud i 1968. Mye av terrenget bestod av grasrike flater og tett ungskog i h.kl. 2. Tiurleikene og skogsfuglkullene befant seg i den gamle skogen. Reven hadde gode tider med mye markmus på hogstflatene, og den livnærte seg av egg og kyllinger når det ikke var museår...
Forfattere
Ingrid Kvalvik Sigridur Dalmannsdottir Halvor Dannevig Grete K. Hovelsrud Lars Rønning Eivind UlebergSammendrag
As a primary industry, agriculture is directly dependent on natural conditions and therefore potentially vulnerable to the consequences of climate change. In Norway and Northern Norway in particular, the future climatic changes are expected to be overall positive. Still, the consequences for agriculture are not straightforward, but dependent on the interaction between different weather and biological elements, as well as political, economic and social conditions. In this interdisciplinary study we have assessed biological and agronomic effects of climate change, and their interaction with political, economic and social factors, to identify farmers' vulnerability and adaptive capacity to climate change. The assessments are based on downscaled climate change scenarios and interviews with local farmers in the three northernmost counties in Northern Norway (latitude 65.5° to 70°). The study shows that the farmers to a degree are vulnerable to a changing climate, not mainly because of the direct effects of changing growing conditions, but because these changes are an added factor to an already tenuous situation created by Norwegian agricultural policy and socio-economic development in general. We have found that farmers are highly adaptive, to both changing growing conditions and changing agricultural policies. However, changes in policy are currently a greater challenge to farmers than climate change, and such changes are therefore a more salient driver of vulnerability.
Forfattere
Ricardo HolgadoSammendrag
In 1955 the potato cyst nematode was recorded for the first time in Agder. This detection produced the initial legislation of PCN control, and was implemented based on the statutory regulation of 1916. Since 1956 PCN was given quarantine status in infested agricultural land and home gardens. Official controls of certified seed potatoes started in 1939. Each year about 3000 soil samples are analyzed for PCN to clear areas for certified seed potato production. These areas are so far free of PCN. The total acreage with seed potatoes in 2009 was 813.7 Ha. Extensive surveys started in 1955; and were carried uninterrupted until the end of the 1990ties. These surveys included producing potato agricultural land and home gardens. In 2009 a new national survey program for the principal potato districts has started, the surveys is aimed to update the PCN occurrence. The surveys will continue during the subsequently years until all major potato areas will be cover. Statutory regulations for PCN from 1956-2010 to Support to Norwegian Food Safety Authority The regulations have without doubt contributed in preventing PCN infestations in the seed potato areas, and probably also prevented further spreading of wPCN and virulent yPCN as each the find has been placed under quarantine. Permanent grass as a statutory regulation in home garden plots may have contributed to reduce the spread of wPCN to commercial fields. The regulations have most probably made possible the early reduction in use of chemical fumigants, organophosphates or carbamate nematicides. These chemicals have not been used since the early 1970s. The domestic production of seed potato has been kept free of PCN by frequent inspections and analyses for more than 50 years. The fact that farmers are not allowed to import seed potatoes adds to the level of security. New project Studies on the biology of potato cyst nematodes (Globodera spp.) under Nordic conditions for improving management and regulation in Norway. Major goal is to increase the scientific basis for amending the management system for PCN, Globodera spp under Nordic conditions.
Forfattere
Jan Bartoš Simen Rød Sandve Roland Kölliker David Kopecký Pavla Christelová Štepán Stoces Liv Ostrem Arild Larsen Andrzej Kilian Odd-Arne Rognli Jaroslav DoleželSammendrag
Species belonging to the Festuca-Lolium complex are important forage and turf species and as such have been intensively studied. However, their out-crossing nature and limited availability of molecular markers make genetic studies difficult. Here, we report on saturation of F. pratensis and L. multiflorum genetic maps using Diversity Array Technology (DArT) markers and the DArTFest array. 529 and 148 DArT markers were placed on genetic map of L. multiflorum and F. pratensis, respectively, with overlap of 16 markers mapped in both species. The markers were sequenced and mapped in silico to the sequenced genomes of rice and Brachypodium. The utility of the DArTFest array was then tested on a Festulolium population FuRs0357 in an integrated analysis using the DArT marker map positions to study associations between markers and freezing tolerance. Ninety six markers were significantly associated with freezing tolerance and five of these markers were genetically mapped to chromosomes 2, 4 and 7. Three genomic loci associated with freezing tolerance in the FuRs0357 population co-localized with chromosome segments and QTLs previously implicated in freezing tolerance. The present work clearly confirms the potential of the DArTFest array in genetic studies of the Festuca-Lolium complex. The annotated DArTFest array resources could accelerate further studies and improvement of desired traits in Festuca-Lolium species.
Forfattere
Maria Strandberg Trygve S. AamlidSammendrag
Presentation for foreign visitors
Forfattere
Louise R. Cooke Huub T.A.M. Schepers Arne Hermansen Ruairidh A. Bain Nick J. Bradshaw Faye Ritchie David S. Shaw Albartus Evenhuis Geert J.T. Kessel Johan G.N. Wander Björn Andersson Jens Grønbech Hansen Asko Hannukkala Ragnhild Nærstad Bent J. NielsenSammendrag
Det er ikke registrert sammendrag
Forfattere
Asbjørn VeidalSammendrag
Stadig flere gårdbrukere slutter med tradisjonell volumbasert gårdsdrift, og mens noen tar seg arbeid utenfor næringen, forsøker andre nye muligheter å bruke gårdens og landbrukets ressurser i ny næringsvirksomhet. I denne undersøkelsen studerer jeg gårdsbaserte entreprenører, deres grunnlag for næringsutvikling og hvordan de utvikler sin satsing. […]
Forfattere
Oddbjørn Kval-EngstadSammendrag
En rask gjennomgang av hovedeffekter ved spredning av husdyrgjødsel med ulike spredeteknikker, basert på nyere skandinaviske rapporter. Hovedkonklusjoner: - Vanntilsetning til 4-5 % tørrstoff ved slangetilførsel eller korte avstander - Stripespredning med gylle er mest forutsigbart (inkl slepesko) - Nedfelling har best N-potensiale, men innebærer pr dato større usikkerhet enn stripespredning - Vi må vite mer om jordpakkingseffekter !! Last ned pdf av presentasjon under "Les mer" til høyre.