Quercus robur

Quercus robur (oak acoms) Ocimum basilicum (basil)... 

Kamennaya steppe 5.0 415 DsciAxtoa/Quercus robur Chernozems A1... 

Patterns of polyphenol accumulation In leaves vary among the few temperate forest species which have been studied. Feeny s (42) classic study on oak leaves (Quercus robur) shows leaf tannin levels rising slowly until August, and then Increasing sharply. In the cases of sugar maple (Acer saccharum) and yellow birch (Betula lutea) (44), respectively. 

N.A. Quercus robur L. Tannins, cutins, suberins." Treat sore throat, tonsillitis, an astringent. 

Anagalis arvensis, Cucurbita maxima Curcuma longa, Santalum album Curcuma aromatica Quercus robur Prunus mume Jatropha gospiifolia... 

Matteuccia struthiopteris, Melochia tomentosa, Rehmannia glutinosa, Scutellaria baicalensis, S. macrantha, S. lateriflora, Urtica urens Strychnos nux-vomica Quercus robur... 

Feeny and Bostock (37) have found a relationship between timing of an insect life cycle and plant palatability. Larvae of the winter moth Operophtera brumata feed in spring on young leaves of the deciduous oak Quercus robur. The larvae are apparently intolerant of high tannin content in leaves, and the authors found that tannin content was minimal... 

Quercitol (= Acorn sugar 2-Deoxy-D-chiro-inositol) (cyclitol) Quercus robur (oak) (Fagaceae) [acorn], Chamaerops humilis (Palmae) [leaf], Mimusops elengii (Sapotaceae) Sweet... 

Doussot, E, Pardon, R, Dedier, J., de Jeso, B. (2000). Individual, species and geographic origin influence on cooperage oak extractible content Quercus robur L. and Quercus petraea Liebl.). Analusis, 28, 960-965. 

FeuiUat, R, Moio, L., Guichard, E., Marinov, M., Fournier, N., Puech, J. L. (1997). Variation in the concentration of ellagitannins and cis- and rrani-/i-methyl-y-octalactone extracted from oak wood (Quercus robur L., Quercus petraea Liebl.) under model wine cask conditions. Am. J. Enol. Vitic., 48, 509-515. 

Guchu, E., Diaz-Maroto, M. C., Diaz-Maroto, I. J., Vrla-Lamerio, R, Perez-Coello, M. S. (2006a). Influence of the species and geographical location on volatiles composition of Spanish oak wood (Quercus petraea Liebl. and Quercus robur L.). J. Agric. Food Chem., 54, 3062-3066. 

Sauvageot, E, Feuillat, F. (1999). The influence of oak wood (Quercus robur L., Q. petraea Liebl.) on the flavor of Burgundy Pinot noir. An examination of variation among individual trees. Am. J. Enol. TechnoL, 50, 447 55. 

It must be settled whether this approach is sensitive or insensitive towards nonphysiological distributions and amounts of heavy metals, not the least for the sake of biomonitoring. There are data on heavy metal (Zn, Cd, Cu, Pb) accumulation in litter and different soil layers and in plants of some oak woodland next to a metal smelter (Avonmouth near River Severn) in Great Britain (Martin and Bullock 1994). The concentrations in the litter layer are (in xg/kg) Cd 60, Cu about 170, Pb and Zn around 3,000. As usual for these metals except of Zn, where BCF 1 is a normal value, the concentrations of the four metals in photosynthetic organs of oak Quercus robur, other trees and scrubs and the fern Dryopteris are considerably lower than in supporting soils. In this restricted set of metal data, there are pairs of identical soil-leaf BCF only for Quercus robur (Zn, Cd BCF = 0.045) and Dryopteris spp. (Cd, Cu BCF about 0.13) the former corresponds to Ej (L) = -0.28 V, the latter to very similar -0.29 V. 

Hemming D. L., Switsur V. R., Waterhouse J. S., and Heaton T. H. E. (1998) Chmate variations and the stable carbon isotope composition of tree ring cellulose an intercomparison of quercus robur, fagus sylvatica and pinus silvestris. Tellus SOB, 25-33. 

Andersson T. (1991) Influence of stemflow and throughfall from common oak (Quercus robur) on soil chemistry and vegetation patterns. Can. J. Forest Res. 21, 917-924. 

Figure 1.21. Vessels throughout the growth Figure 1.22. Large earl)fwood vessels in the ring in the diffuse porous wood of Populus ring porous wood of Quercus robur. x 40. robusta. x 60.

Mosedale, J.R., Charrier, B. Janin, G. Genetic Control of Wood Color, Density and Heartwood Ellagitannin Content of European Oak (Quercus petraea and Quercus robur).Forestry 69 1996, pp.111-124. 

In the UK, the native oak (Quercus robur) supports 284 species of insect the nonnative horse chestnut (Aesculus hippocastanum) supports just four species. 

Figure I. Radial distribution of Cd in stem wood of an oak tree (Quercus robur) from Bielefeld, Germany. The sample was taken at breast height with an increment borer. The broken vertical line indicates the border between sapwood and heartwood. After Hagemeyer and Breckle (1986).

Hagemeyer, J., 1995. Radial distributions of Cd in stems of oak trees Quercus robur L.) re-analyzed after 10 years. Trees 9, 200-203. 

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