By Michael Szwarc
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The 1st NATO technological know-how discussion board used to be held in Biarritz in September 1990. This Taormina convention is the second one in a chain that we want to be an extended one and that i think that it has equalled the luck of its predecessor. In constructing those conferences the NATO technological know-how Committee desired to assemble major specialists to check fields of robust current curiosity.
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Only the Cu supply of the Neuglobsow experimental site temporarily approached the deficiency threshold level. The Cd and Pb contents of the (unwashed) needles indicate a higher needle age dependent accumulation of these elements near the industrialized areas (Rosa, Taura). The absolute needle contents of these elements, however, do not exceed critical levels. 5. Conclusions Six years after the structural changes in the industrial production of Eastern Germany and the resulting reduction of emissions, the development of the nutritional status of the ecosystems still mirrored the different deposition situation (historically, present) of the pine stands compared at least in the case of N, S, K, Ca and the heavy metals investigated.
In comparison to adult pine 37 R. F Hiiltl and K Bel/mann, Changes of Atmospheric Chemistry and Effects on Forest Ecosystems. 37-63. © 1998 Kluwer Academic Publishers. 38 H Schulz et al. , 1995). This paper reports the results obtained with adult pine stands. 2. ) growing at the sites Neuglobsow, Taura and Rosa. The sites are described in the general introduction and site description chapters. At each area 5 test sites were selected in which 15 trees were randomly chosen. m. m. From each tree one twig was cut in the sun-crown using a mobile elevator platform.
Figure 7. Correlation between the glutamine (a), arginine (b), soluble protein (c) as well as total chlorophyll (d) with non-protein nitrogen (NPN) contents in current year's pine needles from the three field sites. w. 56 H Schulz et al. threshold in the synthesis or storage of both amino acids as well as soluble protein. At this threshold the capacity for the synthesis of glutamine and the storage of soluble protein, too, is saturated (Figure 7c). w. (Table 3), a level considered optimal for growth (Heij and Schneider, 1991; Heinsdorf, 1993).