Mechanisms and Effects of Pollutant-Transfer into Forests

Deposition Into Forest Areas.- Deposition of atmospheric pollutants into a north German forest ecosystem.- Determination of dry deposition of gases over tree tops by measured data and a numerical model.- Profiles of ozone and surface layer parameters over a mature spruce stand.- Ozone in forest stands - Examinations to its occurence and degradation.- Annual variation of wet deposition at non-urban sites in central Europe.- Deposition by rain and snow - Dry deposition on snow.- Deposition of gaseous pollutants in a douglas fir forest: First results of the ACIFORN project.- Experimental estimation of the SO2-deposition on an artificial surface.- Dry deposition of atmospheric particles to an old spruce stand.- A contribution to the experimental quantification of dry deposition to the canopy of coniferous trees.- Occurrence of HNO3, NH3 and NH4NO3 in two forested regions in Austria.- Deposition of Organic Compounds.- Deposition of organic anions at a semi-rural site in central Europe.- Determination of organic peroxides.- The determination of phosgene in the lower troposhere.- Aromatic and chlorinated hydrocarbons in forest areas.- Case Studies.- The deposition of aerosol particles in a forest using an atmospheric residence time model.- Intercomparison of wet-only collectors and precipitation sensors.- Transmission of automobil exhaust within a forest.- Determination of the gaseous air pollutant uptake of a spruce branch by means of the enclosure technique.- Modelling the uptake of SO2 into leaves of forest canopies - Dynamic and steady state considerations.- Modelling the effect of sulfur dioxide, hydrogen sulfite and sulfite on the metabolism of plants.- Accumulation of heavy metals in oak wood from polluted regions.- Investigations on Fog and Dew.- Trace substance inputto coniferous forests via cloud interception.- Comparison of wet deposition inputs via rain and fog interception at a high elevated forest site.- Design and operation of a two-stage fogwater collector.- The influence of manganese on the oxidation of sulfite in dew water.- Measurement of dew and fogwater deposition in forest stands.- Effects of Atmospheric Pollutants on Vegetation.- Effects of photooxidants on plants.- Effect of acidic fog on epicuticular wax layer and water status of Picea abies Karst..- Effects of H2O2 on spruce needles - Results of outdoor fog chamber experiments.- Interactions between root and crown in 90 - year old spruce under documented conditions of deposition.- Different cation exchange in the canopy of two neighbouring beech stands with regard to soil chemistry.- Spatial variation of stress factors and their influence on Norway Spruce nutrition.- Experiments on tree canopy deposition of SO2 and resulting leaching effects.- Effects of exhaust gas on various plant species in fumigation chambers under controlled conditions.- Studies on poplar clones after exposure in open-top chambers to flue gas from an atmospheric fluidised bed-boiler (AFBB).- Input of sulphur and acidity in three spruce stands in the vicinity of a strong SO2-source.- List of Participants.