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.
2026
Forfattere
Annbjørg KristoffersenSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Annbjørg KristoffersenSammendrag
Det er ikke registrert sammendrag
Forfattere
Annbjørg KristoffersenSammendrag
Det er ikke registrert sammendrag
Forfattere
Randi HesjedalSammendrag
Det er ikke registrert sammendrag
Forfattere
Rupesh Kumar Singh Henrique Trindade João Ricardo Sousa Arne Sæbø Vishnu D. Rajput Tao ZhangSammendrag
Det er ikke registrert sammendrag
Forfattere
Mandeep PoudelSammendrag
Det er ikke registrert sammendrag
Sammendrag
Pedotransfer functions (PTFs) are widely used as an efficient alternative for estimating soil hydraulic properties. However, insufficient understanding of how specific input data characteristics drive PTF prediction performance, coupled with challenges in assessing PTF transferability beyond their development datasets, limit their robustness and broad application. Here, we employed the hierarchical Rosetta3 as the development dataset and evaluated its PTF performance using two independent application datasets (National Cooperative Soil Survey (NCSS) and HYBRAS-V2), comprising over 51,900 samples. To further investigate the effect of the input similarity on PTF performance, the Chamfer Distance (CD) was used to quantify the similarity between the development and application datasets. The extensive NCSS database allowed us to stratify the application dataset by soil temperature regimes, texture classes, and depths for a detailed performance evaluation. Results showed that incorporating additional inputs (e.g., bulk density, field capacity, and wilting point) moderately reduces the correlations between these newly added inputs and the estimation residuals, and that higher residual-input correlations are associated with inferior PTF performance. Furthermore, a lower CD (better resemblance of development and application dataset) leads to better PTF performance. However, increasing input complexity using the hierarchical Rosetta3 models mitigates this effect of resemblance, enhancing robustness across diverse soil and environmental conditions. These findings highlight the importance of analyzing residual-input correlations and suggest that quantifying input-data similarity between PTF development and application datasets can serve as a practical approach to assess the transferability of PTFs.
Forfattere
Abdullah Bugra Senol Linn Solli John Morken Wietske Annechien Stel Nazli Pelin Kocatürk SchumacherSammendrag
Aquaculture sludge from recirculating aquaculture systems (RAS) represents a growing waste stream with potential for biogas recovery; however, elevated salinity can inhibit anaerobic digestion (AD). This study evaluated the biochemical methane potential (BMP) of RAS sludge under freshwater (0%), brackish (1.2%), and marine (3.3%) conditions and assessed the effectiveness of biochar and zeolite. Batch BMP assays were conducted under mesophilic conditions at an inoculum-to-substrate ratio of 2:1, with additives applied at 0.8 g/g VS. Increasing salinity significantly reduced methane yields (p < 0.05), from 533.6 ± 3.4 NmL CH4/g VS in freshwater to 478.1 ± 10.2 and 341.3 ± 0.6 NmL CH4/g VS in brackish and marine conditions, respectively. Biochar enhanced methane production by 5.9–11.3% across all salinities, while zeolite increased yields by 7.7% and 15.7% under brackish and marine conditions, respectively, but had no effect in freshwater. Methane production kinetics were well described by the modified Gompertz model (R2 = 0.983–0.999). Overall, biochar was more effective at low salinity levels, whereas zeolite mitigated salinity-induced inhibition, indicating that targeted additive application can enhance methane recovery from saline aquaculture sludge and support sustainable RAS waste management.