scholarly journals Gradients of the content of photosynthetic pigments and radiation as manifestations of the health condition of Norway spruce (Picea abies [L.] Karst.)

2012 ◽  
Vol 50 (No. 10) ◽  
pp. 489-495
Author(s):  
T. Zemánek ◽  
M. Martinková ◽  
D. Štěrbová
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Photosynthetic Pigments ◽  
Growth Retardation ◽  
Photosynthetic Apparatus ◽  
Health Condition ◽  
Spectrophotometric Analysis ◽  
Tree Crown ◽  
Sample Tree ◽  
Impaired Health

The paper deals with the health condition of sample trees of Norway spruce (Picea abies [L.] Karst.) on the basis of the distribution and quantity of chlorophyll a + b and carotenoids with respect to the gradient of radiation in the tree crown. The content of photosynthetic pigments (PhP) was determined by spectrophotometric analysis. The sample tree is situated at the Rájec nad Svitavou locality, the Drahany Upland, altitude 625 to 640 m. Within the gradient of the content of PhP in the vertical and horizontal profile of a tree, it was shown that the inner coordination of the content of PhP in the crown in relation to the age of needles and their insolation was sufficient. Thus, the tree does not show impaired health condition and its growth retardation results from the short crown. The extent of a photosynthetic apparatus and stability of the tree would be increased particularly after elongation of the lower part of a crown, so-called compensating part.

scholarly journals Factors associated with the distribution and size of Adelges abietis (Homoptera: Adelgidae) galls on a sev- eral years old spruce (Picea abies) plantation

2015 ◽  
Vol 25 (4) ◽  
pp. 161-169 ◽  
Author(s):  
Sebastian Pilichowski ◽  
Damian Pazio ◽  
Marian Giertych
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Tree Crown ◽  
Factors Associated ◽  
Lateral Shoots

The eastern spruce gall adelgid (Adelges abietis) is a homopteran insect related to aphids. It forms pineapple-like pseudocone galls on Norway spruce (Picea abies) shoots, which are often deformed by them. The factors responsible for gall distribution within a tree crown are not clear. We investigated the distribution of galls in crowns on a spruce plantation. We assumed that the number and size of galls is dependent on the size of the tree, position on the crown, the type of shoot and its placement relative to the compass points. We also counted the larval chambers and related their number with gall size. We demonstrated that the largest galls are in the upper part of the crown and on the lateral shoots, and the number of chambers is closely related to the size of the galls. The level of shoot embrace has a significant impact on shoot deformation.

scholarly journals Radial Growth and Health Condition of Norway Spruce (Picea Abies (L.) Karst.) Stands in Relation to Climate (Silesian Beskids, Czech Republic)

2010 ◽  
Vol 36 (-1) ◽  
pp. 9-16 ◽  
Author(s):  
Michal Rybníček ◽  
Petr čermák ◽  
Tomáš Žid ◽  
Tomáš Kolář
Keyword(s):  
Czech Republic ◽  
Picea Abies ◽  
Norway Spruce ◽  
Tree Ring ◽  
Radial Growth ◽  
Vegetation Period ◽  
Health Condition ◽  
Radial Increment ◽  
Tree Ring Chronology ◽  
Standard Tree

Radial Growth and Health Condition of Norway Spruce (Picea Abies(L.) Karst.) Stands in Relation to Climate (Silesian Beskids, Czech Republic)The research was conducted in selected spruce stands of the Silesian Beskids aged over 70 at altitudes from 403 m a.s.l. to 794 m a.s.l. in 2008. The samples were taken and processed in compliance with standard dendrochronological methodology. Tree rings were measured and the tree-ring curves were synchronized using the PAST4 application. The age trend was removed in the ARSTAN application and the climatic influences were modelled in the DendroClim application. The regional standard tree-ring chronology shows an obvious decrease in the radial increment from the beginning of the 1970s to the mid-1990s. The gradual increase in radial increment which followed in the second half of the 1990s was interrupted in 2000, 2003, and 2006. Most of the years with the decreased radial increment have been confirmed by the analysis of significant negative years. The radial increment statistically significantly correlates with the precipitation in July and September of the previous year, precipitation in June of the year in question and precipitation during the vegetation period. Moreover, the growth of spruce is statistically significantly affected by temperatures in October of the previous year and March of the year in question. Additionally, the paper includes habitual monitoring of trees and the volume of salvage cutting in these districts. The condition of the habit of trees and the development of salvage cuttings agree with the hypothesis about strong stress load or its considerable increase in 2003 and the following years.

Nitrogen distribution in young Norway spruce (Picea abies) trees as affected by pedospheric nitrogen supply

1997 ◽  
Vol 101 (4) ◽  
pp. 764-769 ◽  
Author(s):  
Heike Stoermer ◽  
Bettina Seith ◽  
Ulrike Hanemann ◽  
Eckhard George ◽  
Heinz Rennenberg
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Nitrogen Supply ◽  
Nitrogen Distribution

Characterization of stilbenoids from the stem bark of Norway spruce (Picea abies) as antifungal agents

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
J Gabaston ◽  
T Richard ◽  
B Biais ◽  
P Waffo-Teguo ◽  
MF Corio-Costet ◽  
...  
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Antifungal Agents ◽  
Stem Bark
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