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.
2025
Sammendrag
Nature-based solutions (NBS) have been broadly adopted to strengthen water and wastewater sanitation by effectively removing microbial pollutants and limiting significant health risks to aquatic environments and humans. However, temporal variations of pathogen removal efficiencies in NBS and the specific link with faecal pollutants remain understudied. In this study, a Norwegian urban NBS operating as a nature-based treatment system (NBTS) for water purification was monitored on pathogen removal capacities and faecal source tracking through a 1-year study. Applying coupled molecular analyses, i.e., pathogen molecular detection and genetic microbial source tracking, enabled the systemic assessment of this NBTS’s remediation performance while unveiling the intrinsic link between pathogen prevalence and the faecal pollution sources. Notably, the system exhibited stronger pathogen attenuation activity on Enterococcus faecalis, Salmonella enterica serovar Typhimurium, Clostridium perfringens, and Legionella pneumophila (linked closely to human origin in the studied NBTS) than Shigella species and Giardia lamblia sourced mainly from animals. Moreover, the studied system displayed temporal dynamics of its functioning. As such, more fluctuations often occurred in cold months than in the warm period and under varying impacts of measured environmental conditions (i.e., water temperature, pH, electrical conductivity, dissolved oxygen, total dissolved solids, salinity, and oxidation reduction potential). Collectively, the findings of this study consolidate the functional potential of NBS in combating the microbial pollution that results specifically from waterborne enteric pathogens in a tight link with faecal contamination. The disclosed performance seasonality also calls for extra consideration for better-informed system management and remediation enhancement. Last but not least, the holistic study outcomes underscored the explicit value of applying complementary molecular approaches to achieve deeper insights into the functional status of a target NBS over time.
Sammendrag
Purpose: Rice production in paddy soil is important for food security, and nitrogen fertilisation is important to achieve high yields. Digestate, the organic rest from biogas production can be a good fertilizer, but relatively little is known about its use in paddy soil, which is investigated here. Method: Nitrogen transformations and rice growth in soil waterlogged and at field capacity after application of digestate and digestate products were assessed in a pot experiment. Nitrogen transformations and nitrous oxide (N2O) emissions with the same digestates were also assessed in an incubation. Results: One of the tested digestates had as good fertilizer effect as urea. Nitrogen transformations went mostly as expected under given water status, but digestates were more affected by waterlogging than urea. Some instability appeared about 10 days after fertilizer application. Then nitrite levels were high, responsive microbial populations peaked and N2O emissions started. Whilst emissions after mineral fertilizer application (urea) were not affected by waterlogging, emission after application of one of the examined digestate was high at field capacity but almost zero under waterlogging. N2O emissions from all other digestate and water treatments were also low. Conclusion: Digestates have great potential as organic fertilizers in rice production, but N2O emissions under aerobic soil conditions are of concern and warrants further investigation and mitigation strategy.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Due to the economic importance of protected strawberry production and its relatively high environmental impact, more sustainable cultivation methods are needed. This study compared alternative growing media effects on plant growth and berry production. 'Sonsation' strawberries were grown in six substrates: 100% peat, 100% wood fibre, 50% peat/50% wood fibre (with and without fertilizer), and two compost and wood fiber-based products ('Nittedal' peat-free and '29 mod' peat-reduced). Irrigation treatments included standard fertigation and pure water (for 'Nittedal' and '29 mod'). In the first five weeks, the tallest (35 cm) and shortest (30 cm) plants were recorded in '29 mod' and 'Nittedal' grown on pure water, respectively. The other treatments showed consistent plant height between 33–35 cm. While peat-based media resulted in the highest yield, alternative materials performed similarly, except for a lower yield in the peat-free 'Nittedal' with pure water, with no added fertilizer. This treatment also had fewer inflorescences per plant and lower biomass production. In addition, pH and electrical conductivity measurements indicated that peat-reduced and peat-free substrates maintained optimal pH levels for strawberry growth (between 5.5-6.5). Overall, while peat-based media produced the best-performing plants, the more sustainable alternatives demonstrated comparable performance, making them viable options for strawberry cultivation.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Kronikken – sakprosaens hundremeter gir et kortfattet riss av kronikksjangerens historie og tilbyr praktiske råd og tips om hvordan man kan skrive kronikker som gir gjennomslag i offentligheten. Forfatterne viser hvordan kronikken har blitt et viktig element i avisenes nyhetsformidling, og hvordan kronikker kan brukes til å skape nytt redaksjonelt innhold og debatt. Tydeliggjøringen av hva en kronikk er, og hva den ikke er, er nyttig for både skribenter, redaksjoner og lesere. En økt sjangerforståelse kan bidra til en kvalitetsheving, ikke bare av selve kronikkstoffet, men også av det overordnede arbeidet i de redaktørstyrte mediene. Boka er aktuell for alle som ønsker å skrive en aktuell kronikk for å belyse et tema, og retter seg mot så vel studenter og forskere som ansatte i privat og offentlig sektor. Samtidig vil boka være et viktig verktøy for journalister som til daglig redigerer kronikk‐ og debattartikler.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Eldrid Lein MoltebergSammendrag
Det er ikke registrert sammendrag
Forfattere
Jaroslaw Stefan GrodekSammendrag
Presentasjon av dryppvanningsforsøk i potet under dekke i sammenheng med en årlig markdag hos NIBIO Apelsvoll. Ulike startegier for vanning i småpotetproduksjon av sorter Anouk og Celandine basert på vannbalanse og avlesninger fra jordfuktsensorer. Effekt på knollantall og knoll størrelse.