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Spatial and temporal variability of foliar mineral concentration in beech (Fagus sylvatica) stands in northeastern France.

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Foliar mineral concentration may provide a basis for monitoring the consequences of long-term environmental changes, such as eutrophication and acidification of soils, or increase in atmospheric CO(2) concentration. However, analytical drifts and inter-tree and year-to-year variations may confound

Physical Structure Selectivity of Universal Alkaline Periodate Oxidation on Lignocellulose for Facile Isolation of Cellulose Nanocrystals.

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In this work, we report for the first time the alkaline periodate oxidation on lignocelluloses for the selective isolation of cellulose nanocrystals (CNCs). With the high concentrations as potassium salt at pH 10, periodate ions predominantly exist as dimeric orthoperiodate ions (H2I2O104-). With

Forest vegetation monitoring and foliar chemistry of red spruce and red maple at Acadia National Park in Maine.

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The USDA Forest Service Forest Health Monitoring (FHM) program indicators, including forest mensuration, crown condition classification, and damage and mortality indicators were used in the Cadillac Brook and Hadlock Brook watershed forests at Acadia National Park (ANP) along coastal Maine. Cadillac

Ionic charge, radius, and potential control root/soil concentration ratios of fifty cationic elements in the organic horizon of a beech (Fagus sylvatica) forest podzol.

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The root/organic soil concentration ratio; R/S) of 50 cationic mineral elements was related to their ionic properties, including ionic radius (r), ionic charge (z), and ionic potential (z/r or z2/r). The materials studied were ectomycorrhizal beech (Fagus sylvatica L.) roots and their almost purely

Uptake and distribution of calcium and phosphorus in beech (Fagus sylvatica) as influenced by aluminum and nitrogen.

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We studied the effects of excess nitrogen added as nitrate (NO(3) (-)) or ammonium (NH(4) (+)), or both, on mineral nutrition and growth of beech (Fagus sylvatica L.) plants grown at pH 4.2 in Al-free nutrient solution or in solutions containing 0.1 or 1.0 mM AlCl(3). A high external concentration

The importance of atmospheric deposition, charge and atomic mass to the dynamics of minor and rare elements in developing, ageing, and wilted leaves of beech (Fagus sylvatica L.).

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The amounts of sixty elements in developing, maturing, senescent and wilting leaves, and in the wintering dead leaves attached to the branches, are reported for a beech (Fagus sylvatica) forest on mor Podzol in south Sweden, a site with no local sources of pollution or geological anomalies. The

Effects of simultaneous ozone exposure and nitrogen loads on carbohydrate concentrations, biomass, growth, and nutrient concentrations of young beech trees (Fagus sylvatica).

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Beech seedlings were grown under different nitrogen fertilisation regimes (0, 20, 40, and 80 kg Nha(-1)yr(-1)) for three years and were fumigated with either charcoal-filtered (F) or ambient air (O3). Nitrogen fertilisation increased leaf necroses, aphid infestations, and nutrient ratios in the

Interaction Effect between Elevated CO₂ and Fertilization on Biomass, Gas Exchange and C/N Ratio of European Beech (Fagus sylvatica L.).

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The effects of elevated CO₂ and interaction effects between elevated CO₂ and nutrient supplies on growth and the C/N ratio of European beech (Fagus sylvatica L.) saplings were studied. One-year-old beech saplings were grown in a greenhouse at ambient (385 ppm) and elevated CO₂ (770 ppm/950 ppm),

Acid fog damage of beech at Hinokiboramaru-Tanzawa, Japan.

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Decline of Japanese beech forest has been obvious at the Tanzawa Mountains near Tokyo. Observations on fog, precipitation and stem flow were performed during June-October, 1994 on both, NE (with healthy beech) and S-SE (with unhealthy beech) slopes, collecting samples biweekly. Chemical species were

Subcellular nutrient element localization and enrichment in ecto- and arbuscular mycorrhizas of field-grown beech and ash trees indicate functional differences.

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Mycorrhizas are the chief organ for plant mineral nutrient acquisition. In temperate, mixed forests, ash roots (Fraxinus excelsior) are colonized by arbuscular mycorrhizal fungi (AM) and beech roots (Fagus sylvatica) by ectomycorrhizal fungi (EcM). Knowledge on the functions of different mycorrhizal

Ectomycorrhizal fungal diversity, tree diversity and root nutrient relations in a mixed Central European forest.

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Knowledge is limited about whether root nutrient concentrations are affected by mixtures of tree species and interspecific root competition. The goal of this field study was to investigate root nutrient element concentrations in relation to root and ectomycorrhizal (EM) diversity in six different

Status of the Southern Carpathian forests in the long-term ecological research network.

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Air pollution, bulk precipitation, throughfall, soil condition, foliar nutrients, as well as forest health and growth were studied in 2006-2009 in a long-term ecological research (LTER) network in the Bucegi Mountains, Romania. Ozone (O(3)) was high indicating a potential for phytotoxicity. Ammonia

Short-term canopy interactions of beech trees: mineral ion leaching and absorption during rainfall.

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Mineral nutrient composition of the stemflow of 70-120-year-old beech trees Fagus sylvatica L. in 26 stands in northwestern Switzerland was compared with that of incident precipitation. Four mm of precipitation was sufficient to wash-off the bulk of the dry deposition intercepted by the canopy.

Substrate influences ecophysiological performance of tree seedlings.

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Unfavourable soil conditions frequently limit tree regeneration in mountain forests on calcareous bedrock. Rocky, shallow organic soils on dolomite pose a particular problem for tree regeneration due to commonly restricted water and nutrient supplies. Moreover, an often dense layer of understorey

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Herbal & Natural Medicine

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