S. Rousseva is a Research Professor, Head of Soil Erosion Department, research leader and Chairman of the Scientific Council of the Institute of Soil Science. She is an expert in soil and water conservation, soil physics, soil erosion and soil science with extensive experience in: research concerning the impact of soil erosion, soil tillage and sewage sludge amendment on soil physical properties, and soil and environmental quality; approaches and methodologies for estimation of soil physical properties, soil erodibility, rainfall erosivity and soil protection effects of vegetation; development of pedo-transfer functions for assessment of soil hydrological properties; data transformation between different soil texture methods and classification schemes; use of soil physical characteristics for soil diagnostics and classification purposes; construction and management of databanks on: field plots for soil erosion studies, rainfall simulations, humus reserves of Bulgarian soils and impact of subsoil compaction on soil physical properties, and crop yields; modelling the processes of soil erosion; and geographic information systems for soil erosion risk assessments. She coordinated the Bulgarian part of the FP6 projects PICCMAT and SoilCritZone and was involved in other international projects, such as ENVASSO, GS Soil, SPADE2 and others.