Career

Current Research Project

SOILPROM (Modelling pollutant transport across the soil-water-atmosphere continuum, and impacts on ecosystem services)

Analyses of EU soil pollution policies (plastic, metals, PFAS, nutrients, pesticides)

Publications

Land use policy

• Stubenrauch, J., Heyl, K.: Supporting data of the paper: Plastic pollution of soils – assessing EU policies to address a poorly regulated field, zenodo (2025). doi:10.5281/zenodo.15187632
• Garske, B.; Heyl, K.; Ekardt, F.: How economic instruments address sustainable nutrient use: the example of phosphorus governance, Environmental Sciences Europe (2025), 37. doi:10.1186/s12302-024-01045-x
• Ekardt, F., Klimm, K., Holz, W., Heyl, K.: EU-Pestizid-Governance: Pflanzenschutzmittel-Ordnungsrecht oder Mengensteuerung? Natur und Recht (2024), 46, 589-599. doi:10.1007/s10357-024-4435-7
• Garske, B., Heyl, K., Ekardt, F.: The EU Communication on ensuring availability and affordability of fertilisers – a milestone for sustainable nutrient management or a missed opportunity?, Environmental Sciences Europe (2024), 36:19. doi:10.1186/s12302-024-00842-8
• Heyl, K., Garske, B., Ekardt, F.: Using bone char as phosphate recycling fertilizer: an analysis of the new EU Fertilising Products Regulation, Environmental Sciences Europe, (2023), 35:109. doi:10.1186/s12302-023-00819-z
• Heyl, K.: Reducing Phosphorus Input into the Baltic Sea—An Assessment of the Updated Baltic Sea Action Plan and Its Implementation through the Common Agricultural Policy in Germany, Water (2023), 15:315. doi:10.3390/w15020315
• Heyl, K., Ekardt, F., Roos, P., Garske, B.: Achieving the nutrient reduction objective of the Farm to Fork Strategy. An assessment of CAP subsidies for precision fertilization and sustainable agricultural practices in Germany, Frontiers in Sustainable Food Systems (2023), 7:1088640. doi:10.3389/fsufs.2023.1088640
• Heyl, K., Ekardt, F., Roos, P., Garske, B.: Digitalisierte Präzisionsdüngung und EU-Agrarsubventionen im deutschen Recht: Ökologisch effektive Umsetzung von Farm-to-Fork-Strategie und Umweltvölkerrecht?, Natur und Recht (2022), 44, 837-846. doi:10.1007/s10357-022-4114-5
• Heyl, K., Ekardt, F., Sund, L., Roos, P.: Potentials and Limitations of Subsidies in Sustainability Governance: The Example of Agriculture, Sustainability (2022), 14:23, 15859. doi:10.3390/su142315859
• Heyl, K., Ekardt, F., Roos, P., Stubenrauch, J., Garske, B.: Free Trade, Environment, Agriculture, and Plurilateral Treaties: The Ambivalent Example of Mercosur, CETA, and the EU–Vietnam Free Trade Agreement, Sustainability (2021), 13:6, 3153. doi:10.3390/su13063153
• Stubenrauch, J., Ekardt, F., Heyl, K., Garske, B., Schott, V. L., Ober, S.: How to legally overcome the distinction between organic and conventional farming - Governance approaches for sustainable farming on 100% of the land, Sustainable Production and Consumption (2021), 28, 716-725. doi:10.1016/j.spc.2021.06.006
• Heyl, K., Döring, T., Garske, B., Stubenrauch, J., Ekardt, F.: The Common Agricultural Policy beyond 2020: A critical review in light of global environmental goals, Review of European, Comparative and International Law (2021), 30:1, 95-106. doi:10.1111/reel.12351

Climate change policy

• Ekardt, F., Rath, T., Gätsch, C., Klotz, P. C., Heyl, K.: EU Energy Law: Insufficient for the 1.5-Degree Celsius Limit—The Examples of EU Emissions Trading and Hydrogen Policies, Ecological Civilization (2025), 2:2, 10019, doi:10.70322/ecolciviliz.2024.10019
• Günther, P., Garske, B., Heyl, K., Ekardt, F.: Carbon farming, overestimated negative emissions and the limits to emissions trading in land-use governance: the EU carbon removal certification proposal, Environmental Sciences Europe (2024), 36:72. doi:10.1186/s12302-024-00892-y
• Ekardt, F., Bärenwaldt, M., Heyl, K.: The Paris Target, Human Rights, and IPCC Weaknesses: Legal Arguments in favour of Smaller Budgets, Environments (2022), 9:9, 112. doi:10.3390/environments9090112
• Ekardt, F., Heyl, K.: Freedom, Paris, and Climate Litigation: The German Landmark Verdict, Nature Climate Change (2022), 12, 697-699. doi:10.1038/s41558-022-01419-0

Other policy

• Heyl, K., Katz, A., Ekardt, F.: Recht und Governance der Lebensmittelverluste in Deutschland und den Niederlanden, Zeitschrift für Europäisches Umwelt- und Planungsrecht (2024), 22:3, 331-343. Link
• Heyl, K., Ekardt, F.: Recht und Governance von In-vitro-Fleisch. Insbesondere zur EU-Novel-Food-Verordnung, Natur und Recht (2024), 46, 319-325. doi:10.1007/s10357-023-4279-6
• Ekardt, F., Günther, P., Hagemann, K., Garske, B., Heyl, K., Weyland, R.: Legally Binding and Ambitious Biodiversity Protection under the CBD, the Global Biodiversity Framework, and Human Rights Law, Environmental Sciences Europe (2023), 35:80. doi:10.1186/s12302-023-00786-5
• Heyl, K., Ekardt, F.: Barriers and methodology in transitioning to sustainability: Analysing web news comments concerning animal-based diets, Journal of Cleaner Production (2022), 330. doi:10.1016/j.jclepro.2021.129857
• Garske, B., Heyl, K., Ekardt, F., Weber, L. M., Gradzka, W.: Lebensmittelverluste als Governance- und Rechtsproblem, Natur und Recht (2021), 43, 168-179. doi:10.1007/s10357-021-3814-6
• Garske, B., Heyl, K., Ekardt, F., Weber, L. M., Gradzka, W.: Challenges of Food Waste Governance: An Assessment of European Legislation on Food Waste and Recommendations for Improvement by Economic Instruments, Land (2020), 9:7, 231. doi:10.3390/land9070231