Gloria Falsone

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Biotic and abiotic factors contribute in shaping the distribution through the soil profile of elements released by mineral weathering; among them, leaching and biocycling dominate in temperate environments. We evaluated if the intensity of leaching and biocycling of nutrients can be modulated by element deficiencies linked to the abundance of serpentine in(More)
Humus forms may be the first tool to assess qualitatively organic matter turnover in soils; as such they should be related to the stocks of organic C a soil can store, to the characteristics of organic matter that affect its stability and, more generally, to the factors of soil formation. In this work, we tested these hypotheses in 27 forest soils of(More)
In natural forest, disturbance changes tree species composition which in turn affects soil properties. Two areas in the Central Forest State Biosphere Reserve, in the Russian Southern Taiga Zone, differed in the intensity of disturbance: Norway spruce was the dominant species at one site, while at the other spruce was mixed with broadleaves. The presence of(More)
In podzolic B horizons illuviated Al, Fe and organic matter (OM) increase with the ongoing of the pedogenic process. Depending on OM load on mineral surfaces, modifications of the soil surface properties are expected and may influence OM stabilisation. The proportion of labile organic pools should thus vary depending on the type of podzolic horizon. In this(More)
Four new cerebrosides C l-C -4 were isolated from the latex of Euphorbia characias L. On the basis o f spectral evidences and chemical reactions they were characterized as (2S , 3S , 4R , 5R , 6Z)-l-0-(/?-D -glucopyranosyl)-2N -[(2'R )-2'-hydroxy-(15'Z)-tetracosenoyl]-6(Z)-octadecene-l,3,4,5-tetraol-2-am ino (C -l), (2S , 3S , 4R , 5 R, 6Z )-l-0-(/?-D(More)
The aim of the study was to analyse the pedological, chemical and biochemical properties of soil in order to assess the effect of plant cover species (chestnut, Douglas-fir and mixed vegetation) on soil processes. The selected area under Douglas-fir reforestation was homogeneous for climate, morphology and parent material. The study involved three soils:(More)
Soil organic matter (SOM) pools and soil available calcium (Caexch) were monitored during a 4-year period in an experimental chestnut stand treated for the restoration of timber production. In 2004 the stand was cut and stumps were grafted. Before the forestry operations, the biocycling process seemed to contrast soil nutrient loss, returning Ca to mineral(More)
From the m arine brown macroalga Fucus virsoides J. AG. (Fucales, Phaeophyceae), a mix­ ture of triacylglycerols 1 -3 , fucosterol 4, a mixture of galactosyldiacylglycerols 5 8 and fu­ coxanthin 9 have been isolated. Normal phase colum n flash chrom atography was effective for the isolation of the m arine compounds. FAB-MS, CI-MS spectrom etry, *H NM R, 13C(More)
We investigated the relationships between microscale distribution of soil organic matter (SOM) features and their stability by combining optical microscopy, SEM-EDS analysis and NaClO oxidation of soil thin sections on five soils from Harwood Forest in Northumberland (UK) differently affected by water stagnation. Plant organs at different stages of(More)
H. Wagner, O. Seligmann Institut für Pharmazeutische Biologie der Universität München, Karlstraße 29, D-80330 München Z. Naturforsch. 49 b, 135-140 (1994); received August 30,1993 Euphorbiaceae, Cerebrosides, Structure Five cerebrosides B-l -B-4 were isolated from the fraction B, obtained from the latex of Euphorbia characias L. On the basis of spectral(More)