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
Abstract
EMF significantly enhance conifer growth under diverse experimental conditions. EMF effects on conifer stress resistance were not statistically significant. Field studies on EMF-conifer interactions remain scarce and needed.
Abstract
Ascospore release by the European apple canker fungus Neonectria ditissima was examined by means of continuously running spore traps mounted over detached segments of apple tree branches with cankers habouring maturing and ripe perithecia, or placed within tree rows in apple orchards. Records began in autumn 2017 and continued for nearly 3 years at two locations in Norway, and for five autumn to late spring periods at two locations in the Lower Elbe region of northern Germany. In northern Germany, the first ascospore releases were recorded during or after autumnal leaf fall, whilst major peaks occurred from March to May. In Norway spore discharge began in spring with a major peak, continued through the summer and autumn, and paused in mid-winter. These observations indicate that in northern Germany, ascospores are less likely to contribute to fruit and leaf scar infections than in Norway. Furthermore, ascospore discharge events in spring, which were recorded in all sampling years at all sites, were associated with the same rain events as those of the apple scab fungus Venturia inaequalis, and would have been covered by intensive fungicide sprays. For northern Germany, these results indicate a shift in major ascospore release peaks from autumn towards spring as compared to previous data collected some 50 years ago.
Authors
Tomáš Hlásny Michaela Perunová Roman Modlinger Max Blake Gediminas Brazaitis György Csóka Maarten de Groot Mihai-Leonard Duduman Massimo Faccoli Margarita Georgieva Georgi Georgiev Wojciech Grodzki Henrik Hartmann Anikó Hirka Gernot Hoch Hervé Jactel Mats Jonsell Marija Kolšek Paal Krokene Markus Melin Slobodan Milanović Bjørn Økland Milan Pernek Gilles San Martin Martin Schroeder Rupert Seidl Jozef Vakula Tiina YliojaAbstract
Recent increases in forest damage across Europe have challenged national forestry sectors and threatened progress toward Europe’s climate and bioeconomy goals. Although developments in remote sensing now allow large-scale wall-to-wall monitoring of forest conditions, reliable damage assessments still require robust terrestrial data. Yet, existing data often remain inconsistent and fragmentarily distributed across institutions and countries. Based on consultations with national experts, we here provide an evaluation of national forest damage survey programmes in 19 European countries, identify obstacles that hinder more effective use of data, and formulate recommendations to overcome these barriers. We examined five aspects of national forest damage surveys: (i) legal and institutional frameworks, (ii) data acquisition methods, (iii) damage attribution, (iv) data quality and consistency, and (v) data accessibility. We found that half of the examined programs have changed protocols since 2000 and only 53 % of countries currently have survey programs covering their entire forest area. In 26 % of countries, legal constraints hamper data accessibility to the broader international community, while in 89 % data are available only in the respective national languages. In 84 % of countries, the absence of adequate metadata hinders the usability of the data without inside knowledge. Some of Central European countries operate the most consistent and open systems, while western and northern countries generally exhibited lower levels of openness and consistency. The implementation of coordinated structural changes in national programs that would enable consistent monitoring of forest damage at European level is unrealistic in the foreseeable future. However, certain critical gaps in data coverage, completeness, and consistency can be addressed through extensive data post-processing and integration with remote sensing. Overcoming barriers, such as limited awareness of the importance of transnational assessments, requires improved communication efforts and targeted funding programs. Establishing a coordination unit by leveraging existing policy processes in Europe appears essential to advancing these efforts.
Authors
Gry Alfredsen Michael Altgen Mari S. Austigard Johan Mattsson Maria Nunez Lone Ross Sverre Aarseth Tunstad Andreas Treu Igor A. Yakovlev Nanna Bjerregaard PedersenAbstract
This study uses a novel combination of DNA metabarcoding, light microscopy, decay rating, moisture dynamics, and chemical analysis to investigate wood decay in cultural heritage cable car pylons in Svalbard. Uniform design but varying ages allowed analysis of time-dependent decay. Light microscopy revealed the use of both Picea abies and Pinus sylvestris . Decay progressed more rapidly near ground contact, influencing density, lignin, and holocellulose content, with lignin increasing over time. DNA metabarcoding and microscopy revealed dominant brown and soft rot fungi, with greater fungal diversity near ground level. Several new fungal species were identified for Svalbard and the polar regions. In the context of climate change, this highlights the global importance of monitoring fungal decay in wooden structures. The study emphasises the need for updated species lists and continuous monitoring, as new fungi may affect conservation strategies. The interdisciplinary method offers deeper insight into microbial interactions than single-method approaches.
Abstract
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Authors
Paal KrokeneAbstract
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Belachew Asalf TadesseAbstract
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Wiktoria Kaczmarek-DerdaAbstract
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Belachew Asalf TadesseAbstract
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Authors
Wiktoria Kaczmarek-DerdaAbstract
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