Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2020
Sammendrag
No abstract has been registered
Sammendrag
There is a need for new solutions in wood protection against marine wood borers and termites in Europe. A new solution could be the esterification of wood with sorbitol and citric acid (SCA) since these are inexpensive and readily available feedstock chemicals and have shown protective properties against fungal wood degradation in earlier studies and prevented macrobiological degradation, as shown in this study. Protection of wood products in the marine environment lacks available wood preservatives that are approved for marine applications. Termite infestation is opposed mainly by biocide treatments of wood. Several wood modification systems show high resistance against both marine borers and subterranean termites. However, the existing commercialized wood modification products are costly. Both macrobiological forms of degradation represent a great threat for most European wood species, which are rapidly and severely degraded if not properly treated. This study investigated esterified wood in standard field trials against marine wood borers, and against subterranean termites in laboratory trials in a no-choice and choice test. The treatment showed good resistance against wood borers in the marine environment after one season and against subterranean termites in the laboratory after eight weeks. The low termite survival rate (SR) in the no-choice test during the first week of testing indicates a mode of action that is incomparable to other wood modification treatments.
Sammendrag
No abstract has been registered
Sammendrag
No abstract has been registered
Forfattere
Elisabet Martínez-Sancho Lenka Slámová Sandro Morganti Claudio Grefen Barbara Carvalho Benjamin Dauphin Christian Rellstab Felix Gugerli Lars Opgenoorth Katrin Heer Florian Knutzen Georg von Arx Fernando Valladares Stephen Cavers Bruno Fady Ricardo Alía Filippos Aravanopoulos Camilla Avanzi Francesca Bagnoli Evangelos Barbas Catherine Bastien Raquel Benavides Frédéric Bernier Guillaume Bodineau Cristina C. Bastias Jean-Paul Charpentier José M. Climent Marianne Corréard Florence Courdier Darius Danusevicius Anna-Maria Farsakoglou José M. García del Barrio Olivier Gilg Santiago C. González-Martínez Alan Gray Christoph Hartleitner Agathe Hurel Arnaud Jouineau Katri Kärkkäinen Sonja T. Kujala Mariaceleste Labriola Martin Lascoux Marlène Lefebvre Vincent Lejeune Grégoire Le-Provost Mirko Liesebach Ermioni Malliarou Nicolas Mariotte Silvia Matesanz Célia Michotey Pascal Milesi Tor Myking Eduardo Notivol Birte Pakull Andrea Piotti Christophe Plomion Mehdi Pringarbe Tanja Pyhäjärvi Annie Raffin José A. Ramírez-Valiente Kurt Ramskogler Juan J. Robledo-Arnuncio Outi Savolainen Silvio Schueler Vladimir Semerikov Ilaria Spanu Jean Thévenet Mari Mette Tollefsrud Norbert Turion Dominique Veisse Giovanni Giuseppe Vendramin Marc Villar Johan Westin Patrick FontiSammendrag
No abstract has been registered
Forfattere
Elisabet Martínez-Sancho Lenka Slámová Sandro Morganti Claudio Grefen Barbara Carvalho Benjamin Dauphin Christian Rellstab Felix Gugerli Lars Opgenoorth Katrin Heer Florian Knutzen Georg von Arx Fernando Valladares Stephen Cavers Bruno Fady Ricardo Alía Filippos Aravanopoulos Camilla Avanzi Francesca Bagnoli Evangelos Barbas Catherine Bastien Raquel Benavides Frédéric Bernier Guillaume Bodineau Cristina C. Bastias Jean-paul Charpentier José M. Climent Marianne Corréard Florence Courdier Darius Danusevičius Anna-Maria Farsakoglou José M. García del Barrio Olivier Gilg Santiago C. González-Martínez Alan Gray Christoph Hartleitner Agathe Hurel Arnaud Jouineau Katri Kärkkäinen Sonja T. Kujala Mariaceleste Labriola Martin Lascoux Marlène Lefebvre Vincent Lejeune Grégoire Le-Provost Mirko Liesebach Ermioni Malliarou Nicolas Mariotte Tor Myking Mari Mette TollefsrudSammendrag
The dataset presented here was collected by the GenTree project (EU-Horizon 2020), which aims to improve the use of forest genetic resources across Europe by better understanding how trees adapt to their local environment. This dataset of individual tree-core characteristics including ring-width series and whole-core wood density was collected for seven ecologically and economically important European tree species: silver birch (Betula pendula), European beech (Fagus sylvatica), Norway spruce (Picea abies), European black poplar (Populus nigra), maritime pine (Pinus pinaster), Scots pine (Pinus sylvestris), and sessile oak (Quercus petraea). Tree-ring width measurements were obtained from 3600 trees in 142 populations and whole-core wood density was measured for 3098 trees in 125 populations. This dataset covers most of the geographical and climatic range occupied by the selected species. The potential use of it will be highly valuable for assessing ecological and evolutionary responses to environmental conditions as well as for model development and parameterization, to predict adaptability under climate change scenarios.
Sammendrag
In this study, we aim at developing ways to directly translate raw drone data into actionable insights, thus enabling us to make management decisions directly from drone data. Drone photogrammetric data and data analytics were used to model stand-level immediate tending need and cost in regeneration forests. Field reference data were used to train and validate a logistic model for the binary classification of immediate tending need and a multiple linear regression model to predict the cost to perform the tending operation. The performance of the models derived from drone data was compared to models utilizing the following alternative data sources: airborne laser scanning data (ALS), prior information from forest management plans (Prior) and the combination of drone +Prior and ALS +Prior. The use of drone data and prior information outperformed the remaining alternatives in terms of classification of tending needs, whereas drone data alone resulted in the most accurate cost models. Our results are encouraging for further use of drones in the operational management of regeneration forests and show that drone data and data analytics are useful for deriving actionable insights. Key words: UAV, DAP, forest inventory, photogrammetry, precommercial thinning, airborne laser scanning.
Sammendrag
Red-listed species are often used as target species in selection of sites for conservation. However, limitations to their use have been pointed out, and here we address the problem of expected high spatio-temporal dynamics of red-listed species. We used species data (vascular plants, bryophytes, macrolichens and polypore fungi) from two inventories 17 years apart to estimate temporal turnover of red-listed and non-red-listed species in two forest areas (147 and 195 ha) and of plots (0.25 ha) within each area. Furthermore, we investigated how turnover of species afected the rank order of plots regarding richness of red-listed species, using two diferent national Red List issues (1998 and 2015). In both study areas, temporal turnover was substantial, despite minor changes in the overall number of species. At plot level, temporal turnover in red-listed species was higher than in non-red-listed species, but similar to non-red-listed species of the same frequency of occurrence. Adding the efect of changing identities of species red-listed according to the two Red List issues, further increased the estimated spatio-temporal dynamics. Recorded spatio-temporal turnover also resulted in substantial changes in the rank order of plots regarding richness of red-listed species. Using rare red-listed species for site selection may therefore be accompanied by a higher loss of conservation efectiveness over time than for more common species, and particularly at fner scales. Red-listed species · Site selection · Spatio-temporal dynamics · Temporal turnover
Sammendrag
A new stand-level growth and yield model, consisting of component equations for stand volume, basal area, survival, and dominant stand height, was developed from a dataset of long-term trials for managed thinned and unthinned even-aged Norway spruce (Picea abies (L.) Karst.) forests in Norway. The developed models predict considerably faster growth rates than the existing Norwegian models. Further, it was found that the existing Norwegian stand-level models do not match the data from the thinning trails. The significance of thinning response functions indicated that thinning increases basal area growth while reducing competition related mortality. No significant effects of thinning were found in the dominant stand height growth. Model examination by means of cross-validation indicated that the models were unbiased and performed well within the data range. An application of the developed stand-level model highlights the potential use for these models in comparing different management scenarios.
Sammendrag
An understanding of the relationship between volume increment and stand density (basal area, stand density index, etc.) is of utmost importance for properly managing stand density to achieve specific management objectives. There are two main approaches to analyse growth–density relationships. The first relates volume increment to stand density through a basic relationship, which can vary with site productivity, age, and potentially incorporates treatment effects. The second is to relate the volume increment and density of thinned experimental plots relative to that of an unthinned experimental plot on the same site. Using a dataset of 229 thinned and unthinned experimental plots of Norway spruce, a growth model is developed describing the relationship between gross or net volume increment and basal area. The models indicate that gross volume increases with increasing basal area up to 50 m2 and thereafter becomes constant out to the maximum basal area. Alternatively, net volume increment was maximized at a basal area of 43 m2 and decreased with further increases in basal area. However, the models indicated a wide range where net volume increment was essentially constant, varying by less than 1 m3 ha−1 year−1. An analysis of different thinning scenarios indicated that the relative relationship between volume increment and stand density was dynamic and changed over the course of a rotation.