Dr.-Ing. Jan Hitzegrad

• Lokale und räumliche Rauheitswirkung von Austernriffen und Miesmuschelbänken durch Meereswellen.
• Untersuchung natürlicher Oberflächenstrukturen auf Intertidalflächen und Bestimmung topographischer Rauheitsparameter in in-situ Feldstudien.
• Digitale Fabrikation von Ersatzmodellen natürlicher rauer Oberflächen basierend auf statistischer Parametrisierung für hydraulische Untersuchungen im Labormaßstab.
• Experimentelle Untersuchungen der Wellenenergiedissipation durch Bodenreibung über sehr rauhen Meeresoberflächen.

2022 - heute: CoastalFutures: Einfluss von biogeomorpologischen Rauheitselementen in Unterhaltungs- & Klimaszenarien

2019 - 2022:   BIVA-WATT:        Untersuchung der lokalen und räumlichen Rauheitswirkung von Austernriffen und Miesmuschelbänken

2019:               CollStruct:           Beyond Rigidity – Collapsing Structures in Experimental Hydraulics (Master Thesis)

Artikel in Fachzeitschriften

Hoffmann, T. K., Pfennings, K., Hitzegrad, J., Paul, M., Wehrmann, A., Goseberg, N., & Schlurmann, T. (2025). Sediment Accumulation by Coastal Biogenic Structures Sustains Intertidal Flats Facing Sea Level Rise in the German Wadden Sea. Scientific Reports. 15. https://doi.org/10.1038/s41598-025-03326-8 

Hitzegrad, J., Rentsch, L.,  Hoffmann, T. K., Paul, M., Windt, C., Schlurmann, T. & Goseberg, N. (2025). Wave Attenuation by Biogenic Structures in the Central Wadden Sea: Understanding the Frictional Dissipation of Surface Gravity Waves by Oyster Reefs and Mussel Beds. Coastal Engineering. 200. https://doi.org/10.1016/j.coastaleng.2025.104763

Barclay, J., Hitzegrad, J., Keimer, K., Lanham, B., Pomeroy, A. W., Lojek, O., Goseberg, N., & Morris, R. (2025). Intra-Reef Surface Complexity of the Oyster Saccostrea Glomerata and It’s Influence on Surrounding Flow. Estuaries and Coasts 48. https://doi.org/10.1007/s12237-025-01535-y

Pfennings, K., Hoffmann, T. K., Hitzegrad, J., Paul, M., Goseberg, N., Wehrmann, A. (2024): Beyond annual metrics: Linking seasonal population dynamics to vertical oyster reef growth. Ecology and Evolution, 14. https://doi.org/10.1002/ece3.70238

Hitzegrad, J., Brohmann, L., Herding, F., Pfennings, K., Jonischkies, S., Scharnbeck, E., Mainka, J., Mai, I., Windt, C., Kloft, H., Wehrmann, Achim, Lowke, D., Goseberg, N. (2024): Surfaces of Coastal Biogenic Structures: Exploiting Advanced Digital Design and Fabrication Strategies for the Manufacturing of Oyster Reef and Mussel Bed Surrogates. Frontiers in Marine Science, 11. https://doi.org/10.3389/fmars.2024.1395025

Hitzegrad, J., Köster, S., Windt, C., Goseberg, N. (2024): Understanding the Role of Sharp Edges in the Propagation of Surface Gravity Waves. Journal of Geophysical Research: Oceans, 129. https://doi.org/10.1029/2023JC020336

Hoffmann, T. K., Pfennings, K., Hitzegrad, J., Brohmann, L., Welzel, M., Paul, M., Goseberg, N., Wehrmann, A., Schlurmann, T. (2023): Low-Cost UAV Monitoring: Insights into Seasonal Volumetric Changes of an Oyster Reef in the German Wadden Sea. Frontiers in Marine Science. 10. doi: 10.3389/fmars.2023.1245926

Hitzegrad, J., Brohmann, L., Pfennings, K., Hoffmann, T. K., Eilrich, A. K., Paul, M., Welzel, M., Schlurmann, T., Aberle, J., Wehrmann, A., Goseberg, N. (2022): Oyster Reef Surfaces in the Central Wadden Sea: Intra-Reef Classification and Comprehensive Statistical Description. Frontiers in Marine Science. 9. doi: 10.3389/fmars.2022.808018

Konferenzbeiträge und öffentliche Vorträge (Auszug)

Hitzegrad, J., König, C. L., Brendel, A., Lojek, O., and Goseberg, N. (2025). Effects of Oyster Reefs on Back-Barrier Tidal Flats on the Local Hydro- and Morphodynamics. EGU General Assembly 2025, Wien, Österreich, 27.04.-02.05. 2025, EGU25-20663. (Präsentation). https://doi.org/10.5194/egusphere-egu25-20663

Hitzegrad, J.: Die Plage der Nordsee: Die Pazifische Auster gestaltet das Wattenmeer um. Berlin Science Week 2024. 01.11.2024. Berlin, Deutschland (Science Slam).

Hitzegrad, J., Brendel, A., Schuh, E., Lojek, O., & Goseberg, N.: Influence of biogeomorphological roughness elements in maintenance & climate scenarios.
sustainMare Annual Conference 2024. 24.-25.09.2024. Hamburg, Deutschland (Poster).

Hitzegrad, J., Schuh, E., Brendel, A., Windt, C., Lojek, O., & Goseberg, N. (2024): High-Fidelity Numerical Simulation of Oscillating Flows and Turbulence Structures past a Single Oyster Individual. 38^th International Conference on Coastal Engineering. Rome, Italien (Präsentation).

Hitzegrad, J., Schuh, E., Windt, C., Lojek, O., Goseberg, N.: High-Fidelity Numerical Simulation of Oscillating Flow and Turbulence Structure Past a Single Oyster. sustainMare Midterm Conference. 31.08.2023, Kiel, Deutschland (Poster and Pitch Präsentation).

Hitzegrad, J., Windt, C., Lojek, O., & Goseberg, N. (2024): Unraveling the Wave-Attenuating Potential of Oyster Reefs by means of Surrogate Models: A Comprehensive Experimental Analysis. 10^th International Symposium on Environmental Hydraulics 2024. 25.-27.06.2024, Aberdeen, UK (Präsentation).

Hitzegrad, J., Rentsch, L., Windt, C., & Goseberg, N. (2023): Oyster Reef and Mussel Bed Surrogates Subjected to Waves. 37^th International Conference on Coastal Engineering. Sydney, Australia (Präsentation). Coastal Engineering Proceedings. (37), 32. https://doi.org/10.9753/icce.v37.waves.32

Windt., C., Hitzegrad, J., Saelzer, M., & Goseberg, N. (2022): Numerical Simulation of the Wave Kinematics near Varying Bottom Topographies. 17^th OpenFOAM Workshop, 11.-14.07.2022, Cambridge, UK (Präsentation).

Pfennings, K., Hoffmann, T. K., Hitzegrad, J., Brohmann, L., Goseberg, N., Schlurmann, T., Paul, M., & Wehrmann, A. (2022): 3D monitoring of an intertidal oyster reef (central Wadden Sea) linking terrestrial laser scanning with population dynamics. 59^th Estuarine and Coastal Sciences Association Conference 2022, 05.-08.09.2022, San Sebastian, Spanien (Poster).

Hitzegrad, J., Köster, S., Goseberg, N.: Experimental investigation of the impact of the form of roughness elements on wave energy dissipation, 10th CoastDoc Workshop 2021. 07.10.2021 Hamburg, Deutschland (Präsentation).

Hitzegrad, J., Brohmann, L., Hoffmann, T., Pfennings, K., Kloft, H., Paul, M., Schlurmann, T., Wehrmann, A., & Goseberg, N. (2021): Yet another “Ecological Engineer”?: The Pacific Oyster – transforming the roughness of the Wadden Sea by an invasive species, V.ECOP Day 2021 (Virtual Early Career Ocean Professionals Day 2021). International/online (Video und digitale tour).

Hitzegrad, J., Brohmann, L., Pfennings, K., Hoffmann, T., Kloft, H., Paul, M., Schlurmann, T., Wehrmann, A., & Goseberg, N. (2020): Measurement and statistical Analysis of Oyster Reef Surfaces in the German Wadden Sea, AGU Fall Meeting 2020. 15.12.2020, San Francisco, USA/online (Poster).

Hitzegrad, J., Brohmann, L., Pfennings, K., Hoffmann, T., Wehrmann, A., Paul, M., Goseberg, N., Schlurmann, T. (2020): Roughness effects of oyster reefs and blue mussel beds in the German Wadden Sea –the BIVA-WATT project, 15. FZK-Kolloquium, 05.03.2020, Hannover, Deutschland (Präsentation).

Krautwald, C., Stolle, J., Hitzegrad, J., Niebuhr, P., Goseberg, N., Nistor, I., & Sieder, M. (2020). Large-Scale Physical Modelling of a Broken Solitary Wave Impact on Rigid and Non-rigid Box-like Structures. virtual International Conference on Coastal Engineering. Online. (Presentation). Coastal Engineering Proceedings. (36), 19. https://doi.org/10.9753/icce.v36v.structures.19

Hafentechnische Gesellschaft e.V. (HTG)

Alumni-Bau Carolo-Wilhelmina e.V.

European Geosciences Union (EGU)