scholarly journals Age-related effects on leaf area/sapwood area relationships, canopy transpiration and carbon gain of Norway spruce stands (Picea abies) in the Fichtelgebirge, Germany

2002 ◽  
Vol 22 (8) ◽  
pp. 567-574 ◽  
Author(s):  
B. Kostner ◽  
E. Falge ◽  
J. D. Tenhunen
Keyword(s):  
Picea Abies ◽  
Leaf Area ◽  
Norway Spruce ◽  
Carbon Gain ◽  
Sapwood Area ◽  
Canopy Transpiration ◽  
Age Related ◽  
Spruce Stands

scholarly journals Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in different gradation conditions

2010 ◽  
Vol 56 (No. 10) ◽  
pp. 474-484 ◽  
Author(s):  
E. Kula ◽  
W. Ząbecki
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Bark Beetles ◽  
Fungal Pathogens ◽  
Ips Typographus ◽  
Insect Fauna ◽  
Spruce Bark ◽  
Standing Trees ◽  
Spruce Stands ◽  
Endemic Population

Research on merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) was carried out in spruce stands of different age in the area with an endemic population (Moravian-Silesian Beskids, Czech Republic) and in the area with an epidemic population (Beskid Żywiecki, Poland) of the eight-toothed spruce bark beetle Ips typographus (L.). The structure of merocoenoses was characterized separately for standing trees attacked by bark beetles, trees struck by lightning, trees affected by fungal pathogens and wind-felling and trees in the form of snags and fragments. The occurrence of cambioxylophagous insects, mostly bark beetles (Coleoptera: Scolytidae), was compared between the study areas with emphasis on dominant facultative primary bark beetles and types of damage to spruce trees.  

scholarly journals Web-spinning sawflies of the genus Cephalcia Panzer (Hymenoptera, Pamphiliidae) in the Picea abies forests of the Beskidy Mountains (Poland)

2008 ◽  
Vol 53 (Special Issue) ◽  
pp. 63-68 ◽  
Author(s):  
M. Jachym
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Western Carpathians ◽  
Southern Poland ◽  
Spruce Stands

This article presents a review of data and results of investigations from the period 1958–2006 regarding the occurrence of insects of the genus <I>Cephalcia</I> Panzer (Hymenoptera, Pamphiliidae) in Norway spruce stands of the Beskidy Mountains (Western Carpathians, southern Poland). Currently, eight species are known for the area: <I>C. abietis, C. alashanica, C. alpina, C. annulicornis, C. arvensis, C. erythrogaster, C. fulva</I> and <I>C. masuttii</I>. Information regarding each species is given, with details on identification, local occurrence and importance.

Stomatal SO2 uptake and sulfate accumulation in needles of Norway spruce stands (Picea abies) in Central Europe

1995 ◽  
Vol 168-169 (1) ◽  
pp. 405-419 ◽  
Author(s):  
Stefan Slovik ◽  
Alfred Siegmund ◽  
Gerald Kindermann ◽  
Rüdiger Riebeling ◽  
Árpad Balázs
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Central Europe ◽  
Spruce Stands

scholarly journals The effect of root rot and bark-stripping on wind stability of Norway spruce (Picea abies (L.) H. Karst.) = Parastās egles (Picea abies (L.) H. Karst.) vēja noturības izmaiņas sakņu trupes un stumbra mizas bojājumu ietekmē

2020 ◽  
Author(s):  
◽  
Oskars Krisans ◽  
Keyword(s):  
Climate Change ◽  
Picea Abies ◽  
Norway Spruce ◽  
Root Rot ◽  
Mechanical Stability ◽  
Stem Volume ◽  
Natural Disturbances ◽  
Bark Stripping ◽  
Secondary Failure ◽  
Spruce Stands

Climate change causes gradual decline of economic value of Norway spruce forestry except in boreal and hemiboreal forest zones that will remain suitable for this tree species. However, also in this region frequency and scale of damages caused by natural disturbances (abiotic and biotic factors) are expected to increase. Norway spruce will remain its economic significance and role in carbon sequestration in Latvia, if forest management practices will be changed to prevent or minimize the damages caused by natural disturbances. Information on effect of natural disturbances and their interactions on trees is vital for development of recommendations for adaptation of forestry to climate change. The aim of the thesis is to assess the effect of root rot and bark-stripping on possibility of wind induced damages in Norway spruce stands. Tree mechanical stability was primarily determined by its stem volume; however, the presence of damages, caused by biotic agents, such as root rot and bark-stripping, significantly reduced it. Morphometric parameters of Norway spruce stem and root plate differed significantly between stands on drained peat and mineral soils. Root-rot notably and significantly affected mechanical stability of trees regardless of soil type and volume of root-soil plate, resulting in similar reduction of wind load necessary to cause both primary and secondary failure. Consequences of bark-stripping primarily affected root-soil anchorage, more commonly causing uprooting than stem fracture. Most pronounced was reduction of resistance against primary failure. Changing wind climate, high population density of cervids and presence of root-rot will lead to increased risk of damages caused by (repeated) storms and subsequent legacy effects. The survival of forest stands depends on dimensions of trees and exposure time to different damaging agents, and, at current climate and silvicultural practice, was significantly reduced when transitioning into third age class (41-60 years). Targeted forestry, ensuring planting of improved material, lower initial density, timely precommercial thinning and thus ensuring faster reach of the tree dimension required for final harvest will reduce the time when stands are subjected to significant wind damage risk, thus minimizing the possibility of such disturbance and boosting value of Norway spruce stands.

Crown condition, needle mass, and sapwood area relationships of Norway spruce (Picea abies)

2000 ◽  
Vol 30 (10) ◽  
pp. 1646-1654 ◽  
Author(s):  
Otto Eckmüllner ◽  
Hubert Sterba
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Condition Assessment ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Crown Condition ◽  
Cross Sectional ◽  
Sapwood Area ◽  
Good Estimator ◽  
Needle Mass

Crown-condition assessment, hypothesized to estimate needle losses following damage from several sources, one of which might be air pollution, suffers from the subjective notion of a standard "healthy" tree. On the other hand, the foliage biomass - sapwood area ratios are reported to depend on a number of factors, e.g., site quality, stand density, crown class, and tree ring width conductivity. The authors hypothesize that early sapwood area might help to even better estimate needle biomass of Norway spruce (Picea abies (L.) Karst.) and to help standardize crown-condition assessment. Thirty-six Norway spruce trees at two Austrian sites, from three age-classes, three crown classes, and two crown-condition classes were felled. Needle mass, cross-sectional area, sapwood area, and early sapwood area (i.e., sapwood area excluding latewood) were measured. The results of this study indicate that indeed early sapwood area is a good estimator of foliage, independent of site, age, crown class, and crown condition. The ratio between early sapwood area and cross-sectional area could be a good estimator for crown condition and thus help to standardize crown-condition assessments by different surveyors.

scholarly journals Photosynthetic Active Pigments Changes in Norway Spruce (Picea abies) under the Different Acclimation Irradiation and Elevated CO2 Content

2014 ◽  
Vol 2014 ◽  
pp. 1-4
Author(s):  
Miroslav Kvíčala ◽  
Eva Lacková ◽  
Lenka Urbancová
Keyword(s):  
Stress Response ◽  
Picea Abies ◽  
Leaf Area ◽  
Norway Spruce ◽  
Specific Leaf Area ◽  
Plant Stress ◽  
Photosynthetic Active Radiation ◽  
Elevated Concentration ◽  
Active Radiation ◽  
Stimulation Of

Photosynthetic active pigments content (chlorophylls and carotenoids) in Norway spruce (Picea abies) needles was measured by absorption spectroscopy. Norway spruce was exposed to low and high photosynthetic active radiation and ambient and elevated CO2 concentration. It was investigated that combination of low photosynthetic active radiation and elevated concentration of CO2 resulted in stimulation of chlorophylls and carotenoids production. Combination of high photosynthetic active radiation and elevated CO2 concentration led to overall chlorophylls and carotenoids content decrease. Moreover, specific leaf area trend could be used as a potentially reliable indicator of plant stress response.

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