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
Sammendrag
The Global Biodiversity Framework calls for participatory, biodiversity-inclusive spatial planning to address accelerating losses of biodiversity and ecosystem services driven by land-use change. Yet spatial planning systems continue to enable nature degradation despite the increasing availability of ecological data. Ecological data is produced under a knowledge-deficit model—assuming that more data leads to better decisions. However, in spatial planning practice, data must be activated through participation: the less the participation, the less ecological knowledge enters decision-making. Participation is shaped by three dimensions: demos (who participates), chronos (when participation occurs), and kairos (the knowledge environment that enables effective participation). To examine how ecological data becomes integrated into planning decisions, we apply the Stakeholders, Problem, Alternatives, Decision, and Evaluation (SPADE) systems engineering framework. Using triangulation of interviews and gray literature, analyzed through thematic analysis, we interpret findings through a complexity lens, focusing on multi-stakeholder interactions, path dependency, and unpredictable behaviors. We find multiple orientations for activating ecological data, but the regulated pathway addresses the most system requirements. We identify the need for an interpretation function within planning system architectures to create the appropriate kairos in which planners accept ecological data as decision-relevant knowledge. We identified a number of examples of positive feedback which are limiting the ability to integrate ecological data in planning decisions. Finally, we argue that aligning future ecological data production with stakeholder objectives may enhance its uptake. This study offers a qualitative systems approach to better understand why biodiversity continues to decline despite enhanced data availability and regulated planning processes.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Siv Karin Paulsen RyeSammendrag
Tall for Nord-Norge fra driftsgranskingene
Forfattere
Siv Karin Paulsen RyeSammendrag
Tall fra Driftsgranskinger i jord og skogbruk
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Lei Han Alexander Scharf Mohammad Derikvand Matthew Schwarzkopf Bogdan Mitkovski Dick Sandberg Andreja KutnarSammendrag
Conventional wooden dowel connections in timber structures rely on tight press-fit installation, which requires high insertion forces and often loosens over time due to stress relaxation. This study investigates an alternative approach that exploits the moisture-activated set-recovery of thermo-hydro-mechanically (THM) densified hardwood dowels to enable slip-fit assembly followed by self-tightening in service. To this end, European beech and black poplar were densified radially and tangentially at different compression ratios. They were then evaluated for swelling kinetics, swelling pressure, bending performance, and moisture-activated expansion using in-situ X-ray CT in water at 20 °C and 100 °C. Results show that activation kinetics can be controlled by temperature. Expansion was rapid within minutes in hot water and slower but equivalent in magnitude at room temperature. Beech outperformed poplar, with radial densification at 35 % compression ratio producing a peak swelling pressure of 5.7 MPa and a modulus of rupture of 268 MPa after activation. Poplar generated higher free expansion but significantly lower pressure due to its lower stiffness. Radial densification was consistently more effective than tangential, enhancing both expansion magnitude and pressure generation. Capillary uptake triggered expansion along the dowel length (∼30 mm in 1 h) and produced an elliptical expansion profile. Importantly, mechanical strength was retained post-activation, which confirms structural suitability. These results demonstrate that THM-densified beech dowels can offer a robust self-tightening mechanism, combining low-force installation with durable pressure generation and stable mechanical performance. This provides a viable path toward adhesive-free, metal-free, high-tolerance timber connections.
Forfattere
Pia Heltoft Thomsen Arne Gillund Jan Erik Hole Reidar Gusland Lars-Arne Høgetveit Hilde Marie Saastad Ingunn M. Vågen Arne Hermansen Gerd Guren Trond HofsvangSammendrag
Det er ikke registrert sammendrag
Forfattere
Erik J. JonerSammendrag
Foredrag om jord
Forfattere
Erik J. JonerSammendrag
Foredrag om jord
Sammendrag
Det er ikke registrert sammendrag