Biological effects of engineered inorganic nanoparticles on aquatic invertebrates

Project leader: Prof. Dr. Ralf Schulz

University of Koblenz-Landau, Institute for Environmental Sciences

Scientific knowledge regarding the biological impact of EINPa on aquatic organisms and particularly the factors determining this impact is very restricted. Own previous studies using the water flea Daphnia magna and nanosized TiO2 (nTiO2) have shown that e.g. particle size or interactions of EINP with other environmental parameters such as UV irradiation substantially affect the test results. IMPACT aims at conducting a comprehensive set of EINP batch or stream microcosm studies using D. magna as a planktonic filter feeder (endpoints: immobility, internal versus external adhesion [ICP-MS+ETV], molting) and G. fossarum as a benthic shredder (endpoints: leaf consumption, age structure, leaf quality). The overall objective is to understand the importance of EINP (TiO2, Ag0 and others) characteristics for their impact on aquatic macroinvertebrates under varying environmental conditions. IMPACT will test specific hypotheses related to biological effects and EINP characteristics, EINP functioning and environmental conditions, EINP masking and biological effects, as well as EINP and biomagnification via leaf-associated biofilms. IMPACT cooperates with the subprojects ANALYSIS, MASK, INTERFACE, BIOFILM, PORESURFACE, SOILMOBILE and AQUAMOBILE and contributes largely to the INTERNANO JOINT EXPERIMENT using laboratory microcosms mimicking floodplains.


positions to be filled