ESR 10:

Country of origin:

Host institution: Aarhus University



Project title: Linking individual and population level responses to combined effects of contaminants and natural stressors
Objectives: Develop and use Dynamic Energy Budget (DEB) framework for analysing individual and population responses to combined effects of chemical and natural stressors in springtails and/or oligochaetes.
Test hypothesis that both detoxification and repair of toxicant injuries costs in terms of energy, and that acclimation and stress responses induced by exposure to natural stressors have costs in terms of energy.
Test hypothesis that costs – if not compensated for–impact on growth, reproduction and ultimately on population growth rates.
Expected results: Test designs allowing well-controlled dosage of contaminants combined with well-controlled natural stressors; measure metabolic status, growth, reproduction and survival over time. Model data with DEBtox.
Understand importance of selected relevant natural stressors for toxicity of chemicals at higher organizational levels. Feed results into assessments at community/ ecosystem service levels.
Complement work of ESRs 1 and 14 to map complete AOP of combined effects of chemical and natural stressors.
Place: Aarhus, Denmark
Planned secondments: VUA, M24, 2 months, learn DEB theory and methodology
ECT, M30, 2 months, link the data at the individual, population level to effects at the ecosystem level
Work packages: 4 - Predicting effects on ecosystem services through AOPs
3 - Linking molecular responses to effects at higher biological levels using adverse outcome pathways (AOPs)
Supervisor: Martin Holmstrup, AU
Host institution and enrolment: Aarhus University