Jan Hitzegrad, M.Sc.

• Local and spatial roughness of oyster reefs and blue mussel beds subjected to ocean waves
• Investogation of natural surface structures on intertidal flats and determination of topographical roughness parameters in in-situ field studies
• Digital fabrication of surrogate models based on statistical parametrization for hydraulic investigations in laboratory scale
• Experimental investigation of wave energy dissipation due to bed friction over ultra-rough surfaces

2022 - present: CoastalFutures: Scenarios to Promote Sustainable Futures of Contested Marine Areas

2019 - 2022:      BIVA-WATT: Analysis of local and spatial roughness of oyster reefs and blue mussel banks

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

Journal Publications

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., Rentsch, L., Windt, C., & Goseberg, N. (2023): Oyster Reef and Mussel Bed Surrogates Subjected to Waves. Coastal Engineering Proceedings. (37), 32. doi: 10.9753/icce.v37.waves.32

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

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. Coastal Engineering Proceedings. (36v), 19. https://doi.org/10.9753/icce.v36v.structures.19

Lectures

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 (Poster and Pitch Presentation)

Hitzegrad, J., Hoffmann, T., Windt, C., Lojek, O., Paul, M., Schlurmann, T., Goseberg, N.: Bed roughness of shellfish reefs in the German Wadden Sea. FZK meets UTwente. 07.02.2023, Hannover

Hitzegrad, J., Rentsch, L., Windt, C., Goseberg, N.: Oyster reef and mussel bed surrogates subjected to waves. ICCE 2022 Sydney (37th International Conference on Coastal Engineering). 09.12.2022, Sydney, Australia

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

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 and digital 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 Presentation)

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

Hitzegrad, J., Krautwald, C., Stolle, J., Goseberg, N. (2019): Large-scale experimental Modelling of
Broken Solitary Waves impacting a vertical Structure, Coastal Structures 2019, 30.9. - 02.10.2019, Hannover

Hafentechnische Gesellschaft e.V. (HTG)

Alumni-Bau Carolo-Wilhelmina e.V.

StAgEz e.V.