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
Forfattere
Anders Lorentzen Kolstad Joachim Paul Töpper Marianne Evju Line Johansen Magni Olsen Kyrkjeeide Anders Lyngstad Jan Ketil Rød Lise Tingstad Liv Guri VelleSammendrag
Det er ikke registrert sammendrag
Forfattere
Mostafa Hoseini Helle Ross Gobakken Stephan Hoffmann Csongor Horvath Johannes Rahlf Jan Bjerketvedt Stefano Puliti Rasmus AstrupSammendrag
Det er ikke registrert sammendrag
Sammendrag
Optimised contributions of green infrastructure (GI) to urban ecosystem services are strongly related to its multifunctionality. The challenge, however, is that the concept of multifunctionality still needs to be transformed into an operationalised assessment to evaluate current performance, which is instrumental in supporting spatial planning and policy strategies. Using the case of Stavanger City (Norway), the study conducted a spatial assessment of the multifunctionality of the urban green infrastructure. The study used a comprehensive set of 27 function indicators estimated for each of the 156 spatial units classified by their type, age, size, and biophysical characteristics. Correlation patterns among indicators and how the average and effective multifunctionality related to unit characteristics were analysed using correlation and multivariate approaches. The study demonstrated weak correlations between function indicators but revealed some potential trade-offs and function bundles. Notably, bundles related to tree cover (e.g. C sequestration, stormwater retention) had negative relationships with facilitation measures. There was a large overlap in functions between GI types associated with public green spaces and parks. Moreover, the characteristics of green infrastructure units, like size and age, primarily affected multifunctionality through effects on function indicators. Regarding the city-wide multifunctionality, we found some turnover and subsetting of functions among units, supporting multifunctionality at larger spatial scales. However, the average contributions from different GI types were similar. The study highlights the need to understand correlation patterns among function indicators and function bundles as critical to benefit from synergies and avoid unintentional trade-offs when designing and managing urban green areas.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Jian Liu Faruk Djodjic Barbro Ulén Helena Aronsson Marianne Bechmann Lars Bergström Tore Krogstad Katarina KyllmarSammendrag
Det er ikke registrert sammendrag
Sammendrag
Informasjon om frøavl av engknoppurt, svartknoppurt og fagerknoppurt
2024
Sammendrag
Fagansvar for tema skogbiologi (>100 artikler) som gir informasjon om skog, skogtyper, skogbruk og skogens biologi til skoleelever, studenter og befolkningen generelt.
Forfattere
Lars Sandved DalenSammendrag
CP Forests er et internasjonalt samarbeidsprogram om overvåking av effekter av luftforurensninger på skog, opprettet under FNs konvensjon om langtransporterte grenseoverskridende luftforurensninger (CLRTAP).
Forfattere
Lars Sandved DalenSammendrag
Fagansvar for tema skogbiologi (>100 artikler) som gir informasjon om skog, skogtyper, skogbruk og skogens biologi til skoleelever, studenter og befolkningen generelt.
Forfattere
Veronica Quynh Thi PhanSammendrag
Norway spruce (Picea abies (L.) H. Karst.) is a beneficial conifer species in Europe, especially in forestry. The increasing demand of Norway spruce has led to high production of seedlings in growth facilities. Growth conditions in these facilities contribute to fungal outbreaks, and the continuous use of fungicides to combat fungal infections will eventually develop resistance in the fungi. Applying chemical compounds directly to the seeds to prime inducible defences may be a simpler and safer method to protect the seedlings. In this study, seeds were treated with the chemicals methyl jasmonate (MeJA) and chitosan (Chi) to determine if seed priming is possible in Norway spruce. Furthermore, seeds were also treated with JAR, and a combination of JAR and MeJA or Chi, to investigate the hormone signalling pathways involved in MeJA and Chi induced defence responses. To establish the effects of these chemicals, the germination percentage and phenotypes of 4-week-old seedlings were evaluated. Additionally, 4-week-old seedlings were challenged with mechanical wounding and MeJA to determine if the seed treatments had an influence on defence responses. Gene expression levels of seven defence-related genes (CHI4, CHI2, NRPE1, ROS1, JAR1, LAR3, LOX) were quantified at two time points after challenge. In addition, chitinase enzyme activity was measured. The findings of this study indicates that the chemicals MeJA and Chi can possibly penetrate the seed coats of Norway spruce, making seed priming possible. However, this study did not include all defence responses and most genes did not reveal any priming effect, thus it was difficult to determine the signalling pathways involved in defence responses. Overall, the ontogeny of Norway spruce may play a major role in the activation of various defence mechanisms.