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(60-05) Pesticide risk mapping and probabilistic exposure assessment by using GIS-technology. Gutsche, Volkmar*,1, Enzian, Siegfried1, Golla, Burkhard1, 1 Federal Biological Research Centre for Agriculture and Forestry, Stahnsdorfer Damm 81, Kleinmachnow, Germany ABSTRACT- In the framework of an EU concerted action an "Environmental Risk Assessment for European Agriculture (ENRISK)" is being conducted by a consortium of 11 European institutes. The project is sponsored by the EC DG Research under the Fifth Framework Programme for Research, Technological Development and Demonstration Activities. One of five investigated themes in the project concerns the environmental risk caused by the agricultural use of pesticides. For this purpose the German risk indicator SYNOPS is chosen to combine pesticide use patterns with data on topology, climate, soil and surface water by means of GIS-technology (ArcInfoTM, ArcViewTM) for characterizing the potential vulnerability of natural biotopes. The calculations are carried out on two different scales (1 : 4 000 000, 1 : 25 000) resulting in generic European pesticide risk maps as well as detailed local case study risk maps. On the large scale (1 :25 000) SYNOPS is using very detailed information such as neighbourhood between agricultural fields and surface water bodies; distances between them; field slopes; width, depth and velocity of surface water courses; average temperature; average precipitation; hydrological soil types; organic content of soil; crop statistics etc. to enable the calculations of statistical distribution of surface water concentrations of pesticides in a region. Considering a particular pesticide the method offers the opportunity for a probabilistic exposure assessment and finally for a probabilistic risk assessment and can also be used in the framework of pesticide registration decisions. An approach for a particular landscape in the south of Germany is provided. Key words: pesticides, exposure assessment, GIS-technology |
