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
Plant selection is critical for the performance and long-term functionality of NBS. However, selecting suitable species remains challenging due to factors such as the need to balance multiple performance criteria. This study addressed this gap by proposing a structured decision-making framework for roadside rain gardens (RGs) in cold climates, based on three objectives, thirteen criteria, and sixteen quantitative metrics scored on a 1–5 scale. The framework was tested on five plant species commonly used in RGs in Norway to demonstrate its application and assess data availability for the metrics. Results showed that the evaluated plant species exhibit different strengths across objectives: for instance, Bolboschoenus maritimus excelled in plant procurement and establishment support, while Iris pseudacorus scored highest in functions of interest. Consequently, a combination of high-performing species was recommended for RG vegetation design. While the framework was successfully applied, limited data for some metrics required assumptions, highlighting the need for more comprehensive species-specific databases. Given the critical role of plants in the success of NBS, it is recommended that the framework be integrated into official RG design guidelines, with criteria tailored to local conditions.
Sammendrag
Defibrert trefiber testes av stadig flere dyrkere, enten som del av en blanding, eller som enkeltstående vekstmedium. Et spørsmål vi ofte blir stilt er hvor mye kalk substratet med trefiber trenger. Trefiber har lav pH når den er fersk, nesten tilsvarende torv, og det har fått mange til å anta at de skal behandles likt. Det er feil. Den lave pH-en forsvinner raskt ved oppstart av planteproduksjon, og kalker du som du ville gjort med torv, blir det surr.
Forfattere
Henk Maessen Siv Mari Aurdal Tomasz Leszek Woznicki Krzysztof Kusnierek Trond Haraldsen Anita SønstebySammendrag
Bruk av trefiber vil redusere miljøbelastningen ved å erstatte energikrevende steinullproduksjon med et fornybart materiale basert på rest-råstoff fra norsk skogindustri. Ved endt bruk kan trefibermaterialet komposteres, brukes som jordforbedringsmiddel eller brennes for energigjenvinning, i motsetning til steinull som ender på deponi. Etter lovende resultater med Fibergrow® trefibermatter i tomat i 2022 og 2023, gjennomførte vi nye forsøk i 2025 for å bekrefte disse funnene.
Forfattere
Elvira Castillo-Almansa Rubén G. Mateo Mercè Galbany-Casals Carme Blanco-Gavaldà Lucía D. Moreyra Cristina Roquet Christian Brochmann Abel Gizaw Seid Desalegn Chala Alfonso Susanna Juan A. CallejaSammendrag
Climate change poses a significant threat to the Afrotemperate flora of the Eastern Afromontane Biodiversity Hotspot, particularly to species confined to high-elevation ecosystems such as those found on the African sky islands. This study evaluates the vulnerability of tropical Afroalpine and Afromontane Helichrysum taxa (Compositae) by assessing their climatic niches and predicting future shifts in distribution, range fragmentation, and altitudinal limits under climate change scenarios. Occurrence records for 14 taxa (eight Afroalpine and six Afromontane) were obtained from recent field campaigns, biodiversity databases and herbaria. Ensemble ecological niche models were developed combining Generalized Linear Models, Generalized Boosting Models, and Random Forest. Taxon-specific bioclimatic variables were selected after correlation analyses. The models were calibrated using current climate data and projected using the PSL-CM6A-LR and MRI-ESM2.0 climate models with both low- and high-emission scenarios. The results show that most Afrotemperate taxa currently occupy only a portion of their climatically suitable habitat, often in geographically distant areas. Future projections indicate significant range contractions and increased fragmentation. Afroalpine taxa could lose 50–66% of their suitable habitat, while Afromontane taxa could decline by 53–79%. Suitable areas were estimated to shift upwards in elevation, with limited potential for colonization of new areas, and with no significant latitudinal or longitudinal shifts. These findings represent the first continental-scale assessment of the impact of climate change on the Afrotemperate flora using ecological niche modelling. The projected climate-induced range losses and increased habitat fragmentation, in particular combined with increasing anthropogenic pressure in this region, highlight the urgent need for targeted conservation actions.
Sammendrag
Timothy is the primary forage grass seed crop in Norway, where effective control of dicot weeds and lodging management are critical to maximizing seed yield and meeting seed purity standards. Optimal timing of gibberellic acid–inhibiting plant growth regulators (PGRs), such as chlormequat chloride (CCC) and trinexapac-ethyl (TE), often coincides with spring herbicide applications, raising concerns about crop safety and herbicide efficacy when products are tank-mixed. Field experiments were conducted in 2022 and 2023 at two locations in Norway to evaluate the effect of tank-mixing PGRs with commonly used herbicides on seed yield and quality, weed control, and lodging in timothy. Plant growth regulators (CCC (1500 g ai ha⁻¹) and TE (150 g ai ha⁻¹) were applied either as split applications (herbicide at BBCH 25; PGR at BBCH 35) or tank-mixed (BBCH 30–35) with one of three herbicide combinations: fluroxypyr + florasulam, florasulam + diflufenican, or aminopyralid + 2,4-D + florasulam. Seed yield was affected by PGR (P ≤ 0.05) but not by herbicide treatments. TE reduced plant height and lodging more than CCC; however, relative yield responses varied with stand age. Tank-mixing did not reduce seed yield and herbicide efficacy. Crop injury from tank-mixtures was minimal and temporary, and no reductions in final seed germination were observed. Tank-mixing CCC and TE PGRs with herbicides provided effective weed control and maintained optimal seed yield and quality, offering operational flexibility for timothy seed producers.
Sammendrag
Green roofs are increasingly recognized as nature-based solutions that enhance urban resilience by supporting biodiversity, regulating microclimates, and mitigating stormwater runoff. However, their performance—particularly in extensive, lightweight systems—is often constrained by drought stress, which limits plant survival and ecosystem functioning under climate change. While substrate composition has been widely investigated in this context, the role of wind as a co-driver of drought impacts remains poorly understood. In this study, we examined how moderate wind interacts with substrate properties to shape drought responses in green roof vegetation. Using three non-succulent species (Plantago maritima, Pilosella officinarum, and Festuca rubra), we quantified substrate and plant water balance, physiological performance, wilting dynamics, and survival under prolonged drought conditions. Our results demonstrate that wind significantly accelerates drought effects—regardless of species or substrate—by intensifying substrate desiccation, with critical moisture thresholds reached at 6–8%. While wind alone did not impair plant performance under well-watered conditions, its interaction with drought markedly reduced survival time and increased physiological stress. Although general response patterns were consistent across species, subtle interspecific differences indicate that plant selection for green roofs should account for combined drought and wind exposure. These findings highlight wind as an overlooked but critical factor in the design and evaluation of resilient green roof systems and potentially contribute to a more comprehensive understanding of vegetation performance in urban nature-based solutions under climate stress.
Sammendrag
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Sammendrag
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Forfattere
Johannes Kollmann Larissa Uhe Marcello D’Amico Jan C. Habel Tina Heger Svenja B. Kroeger Tommy Lennartsson Hans Martin HanslinSammendrag
Roadside habitats have abiotic and biotic conditions that deviate from natural habitats and thus constitute “novel ecosystems” with insufficient adaptation of native biota. In roadsides, the net effect of positive and negative impacts determines population viability. This situation constitutes an “ecological trap,” when attractive habitats become demographic sinks due to locally reduced reproduction or increased mortality. The impact could be exacerbated by novel ecological factors. To investigate to what extent, for which species, and under which conditions ecological traps are actually occurring, we reviewed the effects of roadsides on plant and animal performance and population dynamics. We identified 390 relevant publications with 470 different effect cases based on a standardized literature review (2008–2018). Overall, 30% of these cases reported positive effects of roadsides on plant and animal populations, 31% of cases reported negative effects, and 39% showed no effects at all. In only 18 cases, negative effects were combined with positive ones, most often due to attractive but unsuitable habitats that constituted ecological traps. Ecological novelty was not used to interpret these effects. We conclude that there is abundant literature on ecological effects of roadsides, while specific research is needed on ecological traps, including potential effects of ecological novelty.