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(317) Mediterranean Scenarios for the ecological risk assessment of pesticides. Pablos, M.V.1, Ramos, C.1, Sanchez, P.1, Vega, M.M.1, Fernandez, C.1, Carbonell, G.1, Tarazona, J.V.1, 1 ABSTRACT- The generic scenarios developed under the Uniform Principles for the registration of pesticides in the European Union presents several problems when applied to Mediterranean conditions. Previous works demonstrated that the scenarios are in most cases overprotective, preventing the registration of pesticides which does not represent a real risk under normal use conditions in Mediterranean crops. The opposite can also be observed, and pesticides representing a significant risk for Mediterranean ecosystems can be approved on the basis of a generic assessment which does not cover the specificities of these systems. This work summarises the four Mediterranean scenarios developed and proposed by the Spanish INIA. The approach includes three local scenarios, D-SWPS (Diffuse Surface Water Pollution Scenario), SE-SWPS (Soil Erosion Surface Water Pollution Scenario), PP-SWPS (Point Pollution Surface Water Pollution Scenario) and a regional one, HMRBS (Holistic Mediterranean River Basin Scenario). These scenarios offer a generic approach for Mediterranean conditions, considering the characteristics of Mediterranean streams (large river basins, highly regulated, large flow variations, relevance of soil erosion). In addition, crop specific scenarios can be required for more realistic assessments. Priorities should be given for pesticides intended to be used in rice, citrus and greenhouses. For vineyards and olive trees, which cover large land extensions and significant percentages of some river basins, a combination of the local D- and SE-SWPS with a simplified version of the regional HMRBS seems to be appropriate for setting a proper scenario for regulatory purposes. Key words: Mediterranean conditions, risk assessments, pesticides, n/a |
