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
Guro HenselSammendrag
Bøhnseter hyttegrend i Sør-Aurdal kommune er et hytteområde med rundt 110 eksisterende og planlagte hytter. Hyttevelforeningen ønsker å se på mulighetene for innlegging av vann i hyttene. Ulike avløps-renseløsninger er derfor aktuelle. Bioforsk Jord og miljø er bedt om å lage en skisse som viser ulike muligheter for rensing av avløpsvann i det aktuelle hytteområdet. Det ble den 3. juni 2011 gjennomført en befaring i Bøhnseter hyttegrend. På bakgrunn av denne befaringen, samt aktuelt kartgrunnlag og møte med representant for hyttevelforeningen, er det utarbeidet en kort rapport med skissering av aktuelle løsninger for rensing av avløpsvann fra hyttefeltet. På bakgrunn av grunnforhold og andre lokale forutsetninger, er det utarbeidet en oversikt over aktuelle løsninger for rensing av avløpsvann fra Bøhnseter hyttefelt.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Liv Guri Velle Liv S. Nilsen Vigdis VandvikSammendrag
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Forfattere
Tatsiana Espevig Michelle DaCosta Lindsey Hoffman Trygve S. Aamlid Anne Marte Tronsmo Bingru Huang Chenping XuSammendrag
Winter injury of temperate grasses used for turf is a significant problem in northern climatic regions. Field trials at two locations in Norway previously demonstrated differences in winter survival between two Agrostis species, velvet bentgrass (Agrostis canina L.) and creeping bentgrass (Agrostis stoloniferaL.). The freezing tolerance is an important component of winter hardiness of turfgrasses and it was studied under controlled environments. We also determined the crown carbohydrate and protein changes at different stages of cold acclimation of velvet bentgrass and creeping bentgrass and assessed their relationship to freezing tolerance. Similar freezing tolerance in velvet bentgrass and creeping bentgrass was associated with similar levels of sucrose in crown tissue of acclimated plants. Significantly higher crown fructan content in creeping bentgrass than in velvet bentgrass had no significantimpact on LT50 and suggested negligible direct contribution of fructans to freezing tolerance. Increased freezing tolerance in response to cold acclimation was associated with enhanced amino acid synthesis, since serine hydroxymethyltrasfernse and methionine synthase were up-regulated by acclimation. The first acclimation stage caused more changes in the crown protein composition than subzero cclimation.
Sammendrag
We overview the main goals and results of ongoing research on carbon cycle of agricultural lands in Hungary. This multi-scale and multi-objective research aims at a better understanding of CO2 exchange between agricultural ecosystems and the atmosphere. The integration of field measurements, laboratory measurements and remote sensing makes it possible to distinguish between and to evaluate the importance of different biotic and abiotic drivers of CO2 exchange on multiple spatial and temporal scales. Spatially representative data based on remote sensing provides invaluable information to constrain regional scale estimations of carbon balance of agricultural lands. The main three pillars of carbon cycle research in our case are field and laboratory measurements of soil respiration, field measurements of ecosystem CO2 fluxes (using the eddy-covariance method), and remote sensing based modelling of carbon cycle components. Measurement sites include various agricultural fields: crop rotation, peach plantation, croplands of a mixed agricultural landscape. Heterogeneous agricultural vegetation is a typical land cover type that occupies major parts ofHungary.
Forfattere
Ragnar TveteråsSammendrag
Det er ikke registrert sammendrag
Forfattere
Andrea FickeSammendrag
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Forfattere
Marte Haave Kristin Ingvaldsen Folven Thomas Carroll Chris Glover Einar Heegaard Trond Brattelid Christer Hogstrand Anne Katrine Lundebye-HaldorsenSammendrag
Nutrients in seafood are known to be beneficial for brain development. Effects of maternal exposure to 2,2′,4,4′ tetrabromo diphenylether (BDE47) was investigated, alongside the potential ameliorating impact of seafood nutrients, through assessment of neurobehaviour and gene expression in brain and liver. Developing mice were exposed during gestation and lactation via dams dosed through casein- or salmon-based feed, spiked with BDE47. Two concentrations were used: a low level (6 μg/kg feed) representing an environmentally realistic concentration and a high level (1,900 μg/kg feed) representing a BDE47 intake much higher than expected from frequents consumption of contaminated seafood. Experimental groups were similar with respect to reproductive success, growth and physical development. Minor, transient changes in neurobehavioural metrics were observed in groups given the highest dose of BDE47. No significant differences in behaviour or development were seen on postnatal day 18 among maternally exposed offspring. Cerebral gene expression investigated by microarray analyses and validated by RT-qPCR showed low fold changes for all genes, despite dose-dependent accumulation of BDE47 in brain tissue. The gene for glutamate ammonia ligase was upregulated compared to control in the casein-based high BDE47diet, suggesting potential impacts on downstream synaptic transmission. The study supported a previously observed regulation of Igfbp2 in brain with BDE47 exposure. Genes for hepatic metabolic enzymes were not influenced by BDE47. Potential neurotoxic effects and neurobehavioural aberrations after perinatal exposure to high levels of BDE47 were not readily observed in mice pups with the present experimental exposure regimes and methods of analysis.
Sammendrag
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Sammendrag
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