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
Authors
Lucía D. Moreyra Cristina Roquet Alfonso Susanna Siri Birkeland Carme Blanco‐Gavaldà Christian Brochmann Desalegn Chala Mercè Galbany‐Casals Abel Gizaw Seid Juan Antonio CallejaAbstract
ABSTRACT Aim We investigated the biogeographic history and diversification dynamics of Afrocarduus , an Afromontane–Afroalpine genus endemic to eastern Africa. We aimed to assess the roles of geographic isolation, habitat transitions, and ecological speciation in shaping current diversity. Location The Afromontane and Afroalpine regions of East Africa and Ethiopia are situated along the Great Rift Valley system. Taxon Afrocarduus (Compositae: Carduinae), a genus comprising 18 endemic species. Methods We conducted a comprehensive taxonomic and geographic sampling of Afrocarduus , generating data from 489 nuclear loci. Phylogenomic and biogeographic ancestral estimation analyses were performed to infer the evolutionary history and historical biogeography of the genus. Results Afrocarduus originated in the Afromontane zone of eastern Africa during the Late Miocene (~10.7 Ma), with major diversification events occurring in the Early Pleistocene (~2.3 Ma). Most dispersal events occurred between neighbouring massifs, though occasional long‐distance dispersal between disjunct mountain systems was detected. The Turkana Depression and the Great Rift Valley have acted as major biogeographic barriers. Phylogenetic structure shows distinct clades occupying different regions. Ecological divergence between Afromontane and Afroalpine environments contributed to speciation, with at least six independent adaptations to Afroalpine conditions and multiple cases of ecological reversal. Stem loss, a trait associated with alpine habitats, evolved convergently in two clades. Closely related species often segregate by elevation or microhabitat within the same massif. Main Conclusions The diversification of Afrocarduus has been shaped by a combination of historical climate change, geographic isolation, and ecological adaptation. Our results emphasise the importance of ecological speciation and habitat transitions in Afrotemperate plant evolution and highlight the need for further research on understudied Afromontane taxa, especially under the threat of ongoing climate change.
Authors
F Durand-Maniclas H Heinemann F Seidel F Ciulla Teresa Gómez de la Bárcena M Camenzind S Corrado Z Csűrös Zs Czakó D Eylenbosch Andrea Ficke C Flamm J M Herrera V Horáková A Hund F Lüddeke F Platz B Poós Daniel Rasse M da Silva-Lopes M Toleikienė A Veršulienė M Visse-Mansiaux K Yu A Don J HirteAbstract
Abstract Background and aims Understanding the relationship of root traits and crop performance under varying environmental conditions facilitates the exploitation of root characteristics in breeding and variety testing to maintain crop yields under climate change. Therefore, we (1) evaluated differences in root length and surface area between ten winter wheat varieties grown at 11 sites in Europe covering a large pedoclimatic gradient, (2) quantified differences in root response to soil, climate and management conditions between varieties, and (3) evaluated variety-specific relationships of grain yield and root length and surface area under diverse environmental conditions. Methods At each site, we sampled the roots to 1 m soil depth after harvest and determined various root traits by scanning and image analysis. The impacts of soil, climate and management on roots and yield of the ten varieties were analysed by means of multivariate mixed models. Key results Root length averaged 1.4 m root piece−1, 5007 m root m−2 soil, and 5300 m root m−2 soil and root surface area 0.039 m2 root piece−1, 40 m2 root m−2 soil, and 43 m2 root m−2 soil in 0.00–0.15 m, 0.15–0.50 m, 0.50–1.00 m soil depth, respectively. The variation in both traits was 10 times higher between sites than varieties, the latter ranging by a factor of 2 within sites. Irrespective of variety, temperature was a major driver of subsoil root traits, suggesting that warmer climates promoted root growth in deeper soil layers. Other soil and climate variables affected root length and/or root surface area of individual varieties, highlighting different degrees of root plasticity. The varieties displayed distinctly different relationships between yield and root traits under varying pedoclimatic conditions, highlighting genetic differences in yield response to environmentally driven root plasticity. Conclusions These findings suggest that breeding efforts should target flexible root–yield relationships in the subsoil to maintain crop performance under climate change.
Authors
Ignacio Sevillano Aksel Granhus Clara Antón Fernandéz Heleen de Wit Fride Høistad Schei Rannveig Margrete Jacobsen Ulrika Jansson Asplund Heikki Korpunen Christian Wilhelm Mohr Jenni Nordén Jørund Rolstad Svein Solberg Ken Olaf Storaunet Marta VergarecheaAbstract
There is an increasing interest in continuous cover forestry (CCF) as an alternative to clearcutting to promote multi-objective forests and preserve continuous maintenance of forest cover. Here, we assessed the effect that an increased use of CCF harvesting methods (shelterwood and selection cutting) in Norwegian forests can have on carbon sequestration. Thus, we simulated CO2 uptake in Norwegian forest stands throughout the 21st century under three scenarios that represent different levels of clearcutting and CCF harvesting methods, keeping the annual harvest volumes constant across all scenarios. The three scenarios are: 1) Business-as-usual (reference scenario where 3.5% of the harvested volume is obtained using CCF harvesting methods); 2) Harvested volume using CCF harvesting methods is increased to 15%; 3) Harvested volume using CCF harvesting methods is increased to 25%. Increasing the proportion of CCF would increase CO2 removals in the long-term (2100), resulting in an additional uptake of nearly 32 and 24 Tg CO2 when increasing CCF up to 25% and 15%, respectively. However, the simulations also showed that to be able to harvest the same timber volume as in the reference scenario that reflects current practice, an increased proportion of CCF would also require logging on a larger proportion of the forest area. CCF could have also positive implications for certain aspects of biodiversity, such as species that require shaded conditions, but harvesting across a larger total area could negatively impact other animals, plants and fungi.
Authors
Micheloni, Cristina Oudshoorn, Frank Willem Blanco Penedo, Maria Isabel Autio, Sari Beste, Andrea Goracci, Jacopo Matthias Koesling Kretzschmar, Ursula Malusá, Eligio Raigon Jiminez, Maria Dolores Speiser, Bernhard van der Blom, Jan Wäckers, Felix Becquet, Stéphane Döring, Johanna Guerra Gorostegi, Nagore Trinchera, AlessandraAbstract
The Expert Group for Technical Advice on Organic Production (EGTOP) was requested to advise on the use of several substances with plant protection or fertilising effects in organic production. The Group discussed whether the use of these substances is in line with the objectives and principles of organic production, and whether they should be included in Regulation (EU) 2021/1165. Recommendations with respect to Annex I to Regulation (EU) (EU) 2021/1165: • The Group identified a number of arguments against of authorising potassium phosphonate, as well as a number of arguments in favour of its authorization. However, it could not reach a consensus regarding the relative weight given to each of those arguments. The Group (10 experts) concluded that the use of potassium phosphonate is not in line with the objectives and principles of organic production and therefore recommends not to include potassium phosphonate in Annex I to Regulation (EU) 2021/1165. However, one expert concluded that the use of potassium phosphonate in viticulture is in line with the objectives and principles of organic production and should therefore be authorised by including it in Annex I to Regulation (EU) 2021/1165, with the restriction ‘use only in viticulture’. One expert abstained. Recommendations with respect to Annex II to Regulation (EU) 2021/1165: • The Group agrees with the use of diatomaceous earth and of pumice as an additive in substrate and compost, and for fertiliser production. To avoid regulation gaps, however, the Group proposes a generic approach which would result in the authorisation of diatomaceous earth and pumice along with other natural mineral deposits. The Group recommends amending the current entry 'stone meal...' as follows: 'Natural mineral deposits such as rock, stone, sand, clays, and clay minerals' with the following specifications: 'mechanical processing and thermal dehydration authorised, e.g. stone meal, sand, perlite, and vermiculite. Perlite, sand, and vermiculite, including when heat treated, may also be used for sprouted seeds production as an inert medium as referred to in Part I, point 1.3(a), of Annex II to Regulation (EU) 2018/848’.
Authors
Micheloni, Cristina Oudshoorn, Frank Willem Blanco Penedo, Maria Isabel Autio, Sari Beste, Andrea Goracci, Jacopo Matthias Koesling Kretzschmar, Ursula Malusá, Eligio Raigon Jiminez, Maria Dolores Speiser, Bernhard van der Blom, Jan Wäckers, Felix Benning, Luisa Deruytter, David Guarino Amato, Monica Lambertz, Christian Van Huis, ArnoldAbstract
The Group observes that, in general, many aspects remain to be clarified in the horizontal legislation to define rules that are applicable to insect production for food and feed. Although this is a task beyond the mandate of the EGTOP, the Group reflects on some key aspects of the horizontal legislation and provides suggestions for adaptations. In addition, the group proposes recommendations specifically addressing organic insect production.
Abstract
Understanding the service life of wood products used outdoors is essential for end-users to set realistic expectations regarding material performance. Furthermore, reliable service life data is critical for assessing building costs, environmental impact, and carbon storage potential. The report compiles existing knowledge on the service life of wood in outdoor constructions in Norway. The relevant applications included are wood used in ground contact, decking, and external cladding, and the data are derived from field trials conducted in Norway. The primary aim is to update the service life tables from a report published in 2014. Additionally, the report provides a brief introduction to the topic of wood protection. Many factors influence the service life of wood products, with temperature and moisture being the two most significant. The service life of wood in constructions primarily depends on the application, the natural durability of the material, any wood preservatives used, the presence of wood-degrading organisms, architecture, and craftsmanship. Poorly designed construction details can act as moisture traps, leading to early fungal damage. Therefore, it is important to address future climate challenges with well-informed solutions for optimal wood use. Secondarily, service life depends on thorough and repeated maintenance.
Authors
Therese With BergeAbstract
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Abstract
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Authors
Xueli Chen Xingzhu Ma Zhuxiu Liu Haidong Gu Hairui Fang Zongzhuan Shen Huibo Zhang Shuming Wan Weiqun Li Xiaoyu Hao Nicholas Clarke Junjie LiuAbstract
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Authors
Jana Špulerová Debbie Bartlett Alexandra Kruse Hannes Bürckmann Sebastian Eiter Mateja Šmid Hribar Drago Kladnik Zdeněk Kučera Jakub Melicher Sophia Philipp Kerstin Potthoff Hans Renes Michael Roth Maurizia SiguraAbstract
Traditional orchards are one of the most well-known examples of multifunctional farming. They have a long history of providing different fruits and combining various other agricultural activities, such as extensive animal farming, with cultural significance that reflect the different regional landscapes of Europe. Objectives This study investigates the extent of traditional orchards and addresses their cultural significance and their contribution to the Sustainable Development Goals in the context of multifunctional agricultural landscapes. Method The presented work combines an expert survey conducted in ten EUCALAND network member countries by means of both a standardised and a more detailed questionnaire to compare and summarize the situation of traditional orchards in these countries. Results The results show that traditional orchards are diminishing on the European scale but still have huge significance in many regions. Provisioning ecosystem services, such as fruit production, are valued in terms of disease resistance and genetic diversity which is likely to be of increasing importance in the context of future climate change and concerns over food security. The most important drivers for maintaining traditional orchards appears to be based on cultural ecosystem services and the benefits they provide to society, including the preservation of traditions and regional identity, attractive places for recreation, aesthetic appreciation, inspiration for artists. The examples of best practices from the contributing countries all reveal the close connection of these orchards to local communities and to often specific traditional knowledge. Conclusion The presented review of the current situation for these important components of the agricultural landscape as well as country-specific management characteristics has the potential to inspire other countries to maintain their traditional orchards.