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.
2016
Forfattere
Halvor SolheimSammendrag
Det er ikke registrert sammendrag
Forfattere
Halvor SolheimSammendrag
Det er ikke registrert sammendrag
Forfattere
E.J. Cottier-Cook N. Nagabhatla Y. Badis M. Campbell Thierry Chopin W. Dai J. Fang P. He C. Hewitt G.H. Kim Y. Huo Z. Jiang G. Kema X. Li F. Liu H. Liu Y. Liu Q. Lu Q. Luo Y. Mao F.E. Msuya Celine Rebours H. Shen GD Stentiford C. Yarish H. Wu X. Yang J. Zhang Y. Zhou Claire M. M. GachonSammendrag
Det er ikke registrert sammendrag
Forfattere
Kjersti KildahlSammendrag
Det er ikke registrert sammendrag
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Per Jarle MøllerhagenSammendrag
Det er ikke registrert sammendrag
Forfattere
Isabella Børja Jan Svetlik Valeriy Nadezhdin Jan Čermák Sabine Rosner Nadezhda NadezhdinaSammendrag
Top dieback of Norway spruce (Picea abies), triggered by drought in 2004–2006, has been observed in Southeast Norway and trees died within four years after appearance of the first symptoms. The aim of our study was to use sap flux measurements as a diagnostic method for assessment of tree vitality. We used the heat field deformation method to monitor the sap flux density (SFD) in four pairs of healthy and declining trees in situ. To provide retrospective information on hydraulic performance of the trees we took samples for wood anatomical analysis. After felling the trees we used the modified differential translucence method (MDT) as a proxy for the SFD measurements. Healthy trees had three times higher SFD values as declining trees. In some healthy trees we detected decreasing SFD with time. The MDT method agreed with the SFD measurements. In conclusion, we detected sap flux dysfunction in declining trees and showed that the SFD reduction may occur during a short period, prior to occurrence of any visual symptoms. We suggest incorporating the SFD measurements into the repertoire of diagnostic tools in forest pathology.
Forfattere
Katarzyna Dabrowska-Zielinska Piotr Golinski Marit Jørgensen Jørgen A.B. Mølmann Gregory Taff Stanislaw Twardy Monika Tomaszewska Barbara Golińska Maria Budzynska Martyna Gatkowska M KopaczSammendrag
Grasslands are significant as a source of forage for animal production, but are also important in many ecological functions. To be able to analyse changes in environmental conditions of grasslands, monitoring of grassland areas using remote sensing is an important task. Studying changes in environmental condition over time and space in grasslands has been the subject of research at different scales. Such an example is the Polish-Norwegian Research Project FINEGRASS „Effect of climatic changes on grassland growth, its water conditions and biomass’. In situ measured soil-vegetation parameters and satellite observations have been combined and analysed to quantify the spatial and temporal variability of grassland conditions, as reflected in variations of vegetation surface temperature, soil moisture, and biomass. Results show a significant trend of increasing grassland surface temperature in Poland, based on AVHRR satellite data; a positive significant relationship between the (April-September) standardized precipitation evapotranspiration index (SPEI) and grass yields in Poland; northern Norway has shown trends towards warmer springs and autumns since 1991, and significant trends towards earlier snowmelt and green-up on test fields in northern Norway.
Forfattere
Svein SolbergSammendrag
Det er ikke registrert sammendrag
Forfattere
Ola FlatenSammendrag
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Sammendrag
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