Academic literature on the topic 'Picea abies log'

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Journal articles on the topic "Picea abies log"

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Kazartsev, Igor, Ekaterina Shorohova, Ekaterina Kapitsa, and Helena Kushnevskaya. "Decaying Picea abies log bark hosts diverse fungal communities." Fungal Ecology 33 (June 2018): 1–12. http://dx.doi.org/10.1016/j.funeco.2017.12.005.

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Haman, Nabil, Ksenia Morozova, Giustino Tonon, Matteo Scampicchio, and Giovanna Ferrentino. "Antimicrobial Effect of Picea abies Extracts on E. coli Growth." Molecules 24, no. 22 (2019): 4053. http://dx.doi.org/10.3390/molecules24224053.

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This study aims to investigate the effect of essential oils extracted from wood residues of Picea abies on the growth of Escherichia coli. The essential oils were extracted by supercritical carbon dioxide, leading to a yield of 3.4 ± 0.5% (w/w) in 120 min. The antimicrobial effect was tested at 37 °C by isothermal calorimetry. The heat-flow (dq/dt vs. time) was integrated to give a fractional reaction curve (α vs. time). Such curves were fitted by a modified Gompertz function to give the lag-time (λ) and the maximum growth rate (µmax) parameters. The results showed that λ was linearly correlat
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Kupferschmid Albisetti, Andrea D., Peter Brang, Walter Schönenberger, and Harald Bugmann. "Decay of Picea abies snag stands on steep mountain slopes." Forestry Chronicle 79, no. 2 (2003): 247–52. http://dx.doi.org/10.5558/tfc79247-2.

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In a 30-ha Picea abies mountain forest in the Swiss Alps, almost all trees were killed by bark beetles (Ips typographus) between 1992 and 1996. Snag decay was studied using full-callipering within transects, and the height of lying logs above ground level was studied using the line intersect method. None of the dead trees had been uprooted, but 75% were found broken in 2000. The probability of snag breakage was independent of both tree diameter and time since stand death, but 28% of the snags broke close to the ground during a storm in December 1999. The log sections that were not in direct co
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Bütler, Rita, Lita Patty, Renée-Claire Le Bayon, Claire Guenat, and Rodolphe Schlaepfer. "Log decay of Picea abies in the Swiss Jura Mountains of central Europe." Forest Ecology and Management 242, no. 2-3 (2007): 791–99. http://dx.doi.org/10.1016/j.foreco.2007.02.017.

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Hagman, P. O. G. "Automatic quality sorting of Picea abies logs with a gamma ray log scanner." Scandinavian Journal of Forest Research 8, no. 1-4 (1993): 583–90. http://dx.doi.org/10.1080/02827589309382804.

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Bowers, Steve. "Dichotomous Keys for Scaling and Grading Merchantable Quality Sawlogs." Western Journal of Applied Forestry 18, no. 4 (2003): 250–58. http://dx.doi.org/10.1093/wjaf/18.4.250.

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Abstract This study documented and field-tested a simplified version of the Westside Grading Guidelines as published in the Official Rules Handbook by the Northwest Log Rules Advisory Group. A four-step dichotomous key was documented and field-tested to determine merchantable vs. nonmerchantable logs. The study also documented and field-tested an individual seven-step dichotomous log grading key for evaluating second-growth Douglas-fir (Pseudotsuga menziesii), Sitka spruce (Picea sitchensis), western hemlock (Tsuga heterophylla), and grand fir (Abies grandis) as derived from the Rules For Grad
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Duchesne, Isabelle, Queju Tong, and Guillaume Hans. "Using Ground Penetrating Radar (GPR) to Predict Log Moisture Content of Commercially Important Canadian Softwoods." Forests 14, no. 12 (2023): 2396. http://dx.doi.org/10.3390/f14122396.

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The non-destructive testing of wood fibre properties is crucial for informing forest management decisions and achieving optimal resource utilization. Moisture content (MC) is an important indicator of wood freshness and may reveal the presence of wood degradation. However, efficient methods are still needed to better monitor this property along the forest–wood value chain. The objective of the study was to develop prediction models to evaluate log MC based on the propagation of ground penetrating radar (GPR) signals. A total of 165 trees representing four species (black spruce (Picea mariana (
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Barszcz, Anna, Anna Sandak, and Jakub Sandak. "Knottiness of spruce stems from the Dolomites as the basis for distinguishing quality zones in roundwood." Folia Forestalia Polonica, Series A - Forestry 52(2) (July 1, 2010): 89–97. https://doi.org/10.5281/zenodo.30610.

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The study was conducted on 9 sample of Norway spruce [Picea abies (L.) Karst] trees, aged 150 years, from three upper subalpine stands in the region of the Dolomites. The knots were classified into three categories of healthiness and three categories of intergrowth with the surrounding wood. Differences in diameters and relative diameters of knots classified into three categories of healthiness and three categories of intergrowth with the surrounding wood was shown on a merchantable bole divided into 10 equal sections. The frequency of occurrence of knots under the analysed categories was the
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Wehrhausen, Martin, Franka Brüchert, and Udo Hans Sauter. "Vermessung und Sortierrelevanz von Rissen in Nadelrund- und Nadelschnittholz." Schweizerische Zeitschrift fur Forstwesen 163, no. 5 (2012): 165–74. http://dx.doi.org/10.3188/szf.2012.0165.

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Measurement and relevance for timber grading of cracks in softwood logs and sawn timber Cracks in timber of Abies alba Mill. and Picea abies (L.) Karst. are of high importance for the optical and mechanical quality of sawn timber products. A sample of 92 logs was assessed in detail before and after the sawing and drying process. The quantity, types and form of cracks were taken on both round wood and sawn product. Emphasis was put on the question, whether cracks take significant influence on the grading results of the sawn timber according to the grading standards DIN 4074-1:2003-06 and DIN EN
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DeLong, S. Craig, Lori D. Daniels, Ben Heemskerk, and Ken Olaf Storaunet. "Temporal development of decaying log habitats in wet spruce–fir stands in east-central British Columbia." Canadian Journal of Forest Research 35, no. 12 (2005): 2841–50. http://dx.doi.org/10.1139/x05-215.

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Time since death and time since fall were estimated for hybrid spruce (Picea glauca (Moench) Voss × Picea engelmannii Parry ex Engelm.) and subalpine fir (Abies lasiocarpa (Hook.) Nutt.) logs to quantify temporal changes in log decay and habitat quality in east-central British Columbia. We sampled 136 logs (72 spruce and 64 fir) for species, size, and morphological attributes and used dendroecological techniques to estimate year of death (n = 97) and fall (n = 22). Time since death and time since fall of spruce and fir were similar in decay classes 1 and 2; fir was older than spruce in more ad
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Dissertations / Theses on the topic "Picea abies log"

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Bergholm, Johan. "Long-term effects of enhanced nitrogen and sulphate additions on soil acidification and nutrient cycling in a Norway spruce stand /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-6099-9.pdf.

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Öberg, Lisa. "Treeline dynamics in short and long term perspectives : observational and historical evidence from the southern Swedish Scandes." Doctoral thesis, Mittuniversitetet, Avdelningen för naturvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-18458.

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Treelines in high-mountain regions are constrained by heat deficiency, although the working mechanisms are still not entirely understood. Observational and paleoecological studies on treeline performance may contribute to increased understanding of the treeline phenomenon in general. The present thesis addresses elevational shifts of alpine treelines in the Swedish Scandes. By various analytical tools, the studies embrace widely different temporal scales. The concept treeline refers to the elevation (m a.s.l.) at a specific site of the upper individual tree of a certain tree species, at least
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Sjöberg, Gudrun. "Lignin degradation : long-term effects of nitrogen addition on decomposition of forest soil organic matter /." Uppsala : Dept. of Soil Sciences, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/a419.pdf.

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Larsson, Hanna, Thomas Kallman, Niclas Gyllenstrand, and Martin Lascoux. "Distribution of Long-Range Linkage Disequilibrium and Tajima's D Values in Scandinavian Populations of Norway Spruce (Picea abies)." Uppsala universitet, Växtekologi och evolution, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-202930.

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The site frequency spectrum of mutations (SFS) and linkage disequilibrium (LD) are the two major sources of information in population genetics studies. In this study we focus on the levels of LD and the SFS and on the effect of sample size on summary statistics in 10 Scandinavian populations of Norway spruce. We found that previous estimates of a low level of LD were highly influenced by both sampling strategy and the fact that data from multiple loci were analyzed jointly. Estimates of LD were in fact heterogeneous across loci and increased within individual populations compared with the esti
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Oja, Johan. "X-ray measurement of properties of saw logs /." Luleå, 1999. http://epubl.luth.se/1402-1544/1999/14/index.html.

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Sarr, Lamine. "Dynamique des racines fines dans les écosystèmes forestiers de sapin baumier (Abies balsamea (L) Mill.) et d'épinette noire (Picea mariana (Mill.)) situés le long d'un gradient climatique." Mémoire, Université de Sherbrooke, 2007. http://savoirs.usherbrooke.ca/handle/11143/4744.

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Le réchauffement de la planète est de nos jours au coeur des préoccupations scientifiques. Consécutif l'augmentation des émissions des Gaz à Effet de Serre (GES), il constitue une réalité qui n'épargne aucun pays. Pour atténuer ses effets dont les conséquences sont déjà inquiétantes, l'accent est mis sur la réduction de ces émissions. Pour ce, l'homme compte beaucoup sur les forêts pour résorber l'excès de carbone que ses activités rejettent dans l'atmosphère. Dans ce contexte, de nouvelles problématiques ont émergé, notamment celle du cycle du carbone forestier.Le Québec, avec son importante
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Sarr, Lamine. "Dynamique des racines fines dans les écosystèmes forestiers de sapin baumier (Abies balsamea (L) Mill.) et d'épinette noire (Picea mariana (Mill.)) situés le long d'un gradient climatique." [S.l. : s.n.], 2007.

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Rosvall, Ola. "Enhancing gain from long-term forest tree breeding while conserving genetic diversity /." Umeå : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5643-6.pdf.

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Lacerte, Valerie. "Étude sur la décomposition de la litière forestière dans des peuplements de sapin baumier (Abies balsamea (L.) Mill.) et d'épinette noire (Picea mariana (Mill.) B.S.P.) localisés le long d'un gradient climatique." Mémoire, Université de Sherbrooke, 2006. http://savoirs.usherbrooke.ca/handle/11143/4733.

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L'évolution dans le temps de la décomposition de la litière forestière a été étudiée dans la sapinière et la pessière noire sous climat froid tempéré et boréal du Québec, dans l'est du Canada, durant deux années consécutives en effectuant plusieurs échantillonnages. La méthode utilisée pour calculer le pourcentage de matière résiduelle et suivre l'évolution des éléments nutritifs (carbone, azote, soufre, calcium, potassium et magnésium) dans le temps est celle des sacs de litière. Les sacs de litière contenant des aiguilles, des plantes herbacées ou des mousses, et des ramilles ont été incubés
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Lacerte, Valerie. "Étude sur la décomposition de la litière forestière dans des peuplements de sapin baumier (Abies balsamea (L.) Mill.) et d'épinette noire (Picea mariana (Mill.) B.S.P.) localisés le long d'un gradient climatique." [S.l. : s.n.], 2006.

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Book chapters on the topic "Picea abies log"

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Godbold, D. L. "Aluminium decreases root growth and calcium and magnesium uptake in Picea abies seedlings." In Plant-Soil Interactions at Low pH. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3438-5_84.

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Conference papers on the topic "Picea abies log"

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KEMESIUS, Martynas, Gerda SILINGIENE, Regina VASINAUSKIENE, and Remigijus ZALKAUSKAS. "THE INFLUENCE OF SEWAGE SLUDGE ON NORWAY SPRUCE (PICEA ABIES (L.) H. KARST.) SEEDLINGS GROWTH." In Rural Development 2015. Aleksandras Stulginskis University, 2015. http://dx.doi.org/10.15544/rd.2015.079.

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The usage of biodegradable waste as sewage sludge in a proper way for tree nurseries enable to seek for ecological, waste-less, alternative to mineral fertilization farming ways. The aim of this research is to investigate impact of sewage sludge fertilizers on Norway spruce (Picea abies) two years’ seedlings growth. Research has been done in 2013-2014 at Utena State Forest Enterprise nursery. The different fertilization rates (20, 40, 60, 80, 100 t/ha) of sewage sludge were investigated and compared with control – traditional fertilization with mineral fertilizers. The impact of sewage sludge
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Čakšs, Roberts, and Baiba Jansone. "Long term effects of total biomass harvesting on understory vegetation and tree stand in Norway spruce stands." In Research for Rural Development 2023 : annual 29th international scientific conference proceedings. Latvia University of Life Sciences and Technologies, 2023. http://dx.doi.org/10.22616/rrd.29.2023.006.

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Northern Europe will be one of the locations where the renewable energy from forests could displace fossil fuels as a result of climate change: therefore, it will become more crucial to maintain renewable materials that also collect CO2. By taking tree biomass out of forest stands, we could create more renewable resources to use in practice, but this has certain negative effects on the forest ecology, including nitrogen leaching and vegetation degradation. The goal of the study is to investigate the effects of full biomass removal (FBR) in Norway spruce (Picea abies (L.) H. Karst.) forest stan
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Bickovskis, Karlis, Aris Jansons, Diana Jansone, and Roberts Matisons. "Meteorological sensitivity of tree-ring width of Scots pine and Norway spruce in drained stand." In 24th International Scientific Conference Engineering for Rural Development. Latvia University of Life Sciences and Technologies, Faculty of Engineering and Information Technologies, 2025. https://doi.org/10.22616/erdev.2025.24.tf237.

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Tree growth in drained peatland forests is influenced by complex interactions between species specific traits and climatic variability, yet these relationships remain insufficiently understood. This study examined the sensitivity of Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) to temperature, precipitation, and the standardized precipitation-evapotranspiration index (SPEI) using tree-ring data and bootstrapped correlation analysis. Climate-growth relationships were analysed for two periods: early (1917-1970) and later (1971-2022). Climate growth responses of pine and spruce sh
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