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
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.
Sammendrag
Norway spruce Picea abies is an economically important tree species in Europe, actively managed for forestry. Among the most negative biotic factors for growth and hence forest production is damage caused by wildlife, such as damage through bark stripping by red deer Cervus elaphus. We quantified bark stripping damage on Norway spruce trees in across 450 stands (aged 20–72 years) spanning a 400 km latitudinal range along Norway's west coast and analysed the underlying mechanisms driving increased probability of bark stripping by red deer. A total of 74% of tree stands had bark stripping damage. The mean percentage of damaged trees was 16.0%, but 50 stands (11.1% of the stands) had more than 50.0% damaged trees. The most important factor determining probability for bark stripping was broad-scale red deer density, where the probability increased markedly when density reached approximately two harvested red deer per km2. In addition, proximity to agricultural farmland, distance from roads, site productivity, distance between twig whorls and terrain ruggedness index increased the probability of bark stripping. Our study on bark stripping on Norway spruce highlights the importance of red deer population control, but also the importance of evaluating environmental factors as well as site factors and tree characteristics in forestry planning to mitigate damage from red deer.
Forfattere
Grete H. M. JørgensenSammendrag
Foredrag 3 timer undervisning for Trener 2 studenter ved Rytterforbundets utdanning
Sammendrag
Skjøtselsplanen er en revidering av planen fra 2015. Den gir en beskrivelse av naturtypen, brukshistorie og skjøtselstiltak for kystlyngheia på Feøyan og Buøya i Dønna kommune. Skjøtselsplanen baserer seg på basiskartlegging av naturtyper etter NiN2 i Åsvær landskapsvernområde i 2024. Intervju med grunneieren ble gjennomført høsten 2025. Skjøtsel blir vurdert og muligheter for framtidig tiltak drøftet sammen med grunneieren.
Forfattere
Kai Yue Pieter Vangansbeke Isla H. Myers-Smith Donald M. Waller Kris Verheyen Markus Bernhardt-Römermann Lander Baeten Ingmar R. Staude Anne D. Bjorkman Radim Hédl Christopher Andrews Elena Barni Thomas Becker Antoine Becker-Scarpitta José Luis Benito-Alonso Jonathan Bennie Imre Berki Volker Blüml Jörg Brunet James M. Bullock Hans Van Calster Michele Carbognani Markéta Chudomelová Déborah Closset-Kopp Pavel Dan Turtureanu Gergana N. Daskalova Guillaume Decocq Jan Dick Martin Diekmann Thomas Dirnböck Tomasz Durak Ove Eriksson Brigitta Erschbamer Bente Jessen Graae Thilo Heinken Martin Hermy Peter Horchler Ute Jandt Bogdan Jaroszewicz Róbert Kanka Jozef Kollár Martin Kopecký Thomas Kudernatsch Andrea Lamprecht Jonathan Lenoir Martin Macek Marek Malicki František Máliš Ottar Michelsen Fraser Mitchell Tobias Naaf Thomas A. Nagel Miles Newman Adrian C. Newton Lena Nicklas Ludovica Oddi Anna Orczewska Simone Orsenigo Adrienne Ortmann-Ajkai Jan den Ouden Harald Pauli George Peterken Petr Petřík Remigiusz Pielech Mihai Puşcaş Christophe Randin Kamila Reczyńska Christian Rixen Fride Høistad Schei Wolfgang Schmidt Jan Šebesta Alina Stachurska-Swakon Tibor Standovár Krzysztof Świerkosz Balázs Teleki Jean-Paul Theurillat Tudor-Mihai Ursu Thomas Vanneste Mark Vellend Philippine Vergeer Ondřej Vild Luis Villar Pascal Vittoz Manuela Winkler Sonja Wipf Fuzhong Wu Shengmin Zhang Pieter De FrenneSammendrag
Climate warming is shifting biological communities, with warmth-demanding species being favoured at the expense of cold-adapted species in a process referred to as thermophilization1,2,3,4. Because biodiversity responses often lag behind climate warming, climatic debts are accumulating in many ecosystems across the world5,6,7. Although we might expect that thermophilization and climatic debts will vary among habitats, standardized quantification across ecosystems is lacking. Here we analysed multidecadal data from 6,067 resurveyed vegetation plots over 12–78 years in forests, grasslands and on alpine summits across Europe. We demonstrate that forest understory and grassland plant communities experienced positive thermophilization, although not significantly different from zero. By contrast, alpine summit vegetation showed much stronger (up to five times) and significant thermophilization. Thermophilization was driven largely by increases in warmth-demanding species in grasslands, by declines in cold-adapted species on alpine summits and by both processes in forests. Significant climatic debts have accumulated in forests and alpine summits, but less so in grasslands, with debts positively correlated with macroclimate temperature changes. Our findings uncover divergent thermophilization trajectories and increasing climatic debts across ecosystems. Moreover, we highlight the mechanisms that enable some communities to track climate change more closely than others and provide a basis for projecting future shifts in plant communities under accelerating climate warming.