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DEPARTMENT OF ENVIRONMENTAL SCIENCE
FACULTY OF SCIENCE
Mark Huijbregts and Aafke Schipper
Environmental Sciences
Radboud University Nijmegen
Environmental Sciences
Introduction
Mark Huijbregts
• Assistent Professor, Department Environmental Science, Radboud University, Nijmegen
• Field of Expertsise: Risk Assessment of chemicals and Life Cycle Assessment of products
Aafke Schipper
• Postdoc, Department Environmental Science, Radboud University, Nijmegen
• Field of Expertise: Multistress assessment in river ecosystems
Radboud University Nijmegen
Environmental Sciences
Human and Environmental Risk Assessment (HERA): Substances
Staff Dr. Ad Ragas, Dr. Mark Huijbregts
Prof. Dik v.d. Meent/Ton Breure (RIVM),
Prof. Jan Hendriks
Aim Environmental risk management
Topics risk assessment, uncertainty analysis
critical body burdens, valuation
CO2, CH4, N, PCB, Cd, H+ …
Radboud University Nijmegen
Environmental Sciences
Nature and Water Management (NWM): Rivers and Estuaries
Staff Dr. Rob Leuven, Dr. Rob Lenders
Dr. Marieke van Katwijk, Prof. Peter
Herman (NIOO), Prof. Jan Hendriks
Aim Integrated river-coastal management
Topics Development and restoration, rivers-
estuaries, multi-stress, sea grass
meadows, eco-engineering, bio-invasions
Radboud University Nijmegen
Environmental Sciences
Uncertainty in a risk assessment framework
1. Expertise RU
- EUTGD spreadsheet, Simplebox
- Monte Carlo simulation1-4
- Comparison with field data5-8
- Uncertainty versus variability2,9
2. Contribution RU
- Assessment of uncertainty in environmental risk outcomes due to uncertainties in the new QSAR regression equations
- Identifying dominant sources of uncertainties in the probabilistic analysis
- Comparison with field data?
References
1. Roelofs et al. 2003. ETC 22 (6): 1387-1393. 2. Hauck et al. Chemosphere 72 (6): 959-967. 3. Harbers et al. 2006. EST 40 (5): 1573-1580. 4. Henning-de Jong et al. 2008. ETC 27 (3):737-745. 5. Smitkova et al. 2005. SAR QSAR Research 16 (5): 483–493. 6. Hauck et al. 2007. EST 41 (8): 2738-2744. 7 Hendriks et al. 2007. Chemosphere 70 (1): 46-56. 8. De Vos et al. 2008. Chemosphere 70 (10): 1766-1773. 9. Ragas et al. 2009. IEAM 5 (1): 27–37.
Radboud University Nijmegen
Environmental Sciences
% variance in arthropod distributions explained by different environmental characteristics
Contamination
Hydrodynamics
Soil characteristics
Vegetation
Shared variation
Unexplained variation
1. Expertise RU
- Mechanistic population/ecosystem models1-3
- Multivariate statistical analysis4
- Valuation from the life cycle assessment of products
2. Contribution RU
- Quantifying effects of toxicants on ecosystem services
- mechanistic versus statistical
- various geographical scales
- comparison with other stressors
- Value of the ecosystem services affected
- Application to the chemical classes included in CADASTER
References
1. Breure et al. 2008. Science of the Total Environment 406 (3): 530-536. 2. Hendriks, 2007. Ecological Modelling 2007; 205: 196-208. 3 Hendriks and Enserink, 1996. Ecological Modelling 88 (1-3): 247-262. 4. Schipper et al. 2008. Environmental Pollution 151: 17-26.
Valuation of substitution of chemicals