Publications and Presentations


Featured publication

Disentangling scatter in long-term concentration–discharge relationships: the role of event types

Felipe A. Saavedra, Andreas Musolff, Jana von Freyberg, Ralf Merz, Stefano Basso, and Larisa Tarasova, Hydrology and Earth System Sciences (2023)


DYNAMO


Nitrate contamination of rivers from agricultural sources is a challenge for water quality management. During runoff events, different transport paths within the catchment might be activated, generating a variety of responses in nitrate concentration in stream water. Using nitrate samples from 184 German catchments and a runoff event classification, we show that hydrologic connectivity during runoff events is a key control of nitrate transport from catchments to streams in our study domain.

  • Wachholz, A., Dehaspe, J., Ebeling, P., Kumar, R., Musolff, A., Saavedra, F., Winter, C., Yang, S., & Graeber, D. (2023). Stoichiometry on the edge—Humans induce strong imbalances of reactive C:N:P ratios in streams. Environmental Research Letters, 18(4), Volltext (DOI)
  • Bieroza, M., Acharya, S., Benisch, J., ter Borg, R. N., Hallberg, L., Negri, C., Pruitt, A., Pucher, M., Saavedra, F., Staniszewska, K., van’t Veen, S. G. M., Vincent, A., Winter, C., Basu, N. B., Jarvie, H. P., & Kirchner, J. W. (2023). Advances in Catchment Science, Hydrochemistry, and Aquatic Ecology Enabled by High-Frequency Water Quality Measurements. Environmental Science & Technology, 57(12), 4701–4719. Volltext (DOI)
  • Saavedra, F., Musolff, A., von Freyberg, J., Merz, R., Basso, S., & Tarasova, L. (2022). Disentangling scatter in long-term concentration–discharge relationships: The role of event types. Hydrology and Earth System Sciences, 26(23), 6227–6245. Volltext (DOI)
  • Kong, X., Determann, M., Andersen, T.K., Barbosa, C.C., Dadi, T., Janssen, A.B.G., Paule-Mercado, M.C., Pujoni, D.G., Schultze, M., Rinke, K. (2023).
    Synergistic effects of warming and internal nutrient loading interfere with the long-term stability of lake restoration and induce sudden re-eutrophication
    Environ. Sci. Technol. 57 (9), 4003 - 4013 Volltext (DOI)
  • Kong, X., Ghaffar, S., Determann, M., Friese, K., Jomaa, S., Mi, C., Shatwell, T., Rinke, K., Rode, M. (2022):
    Reservoir water quality deterioration due to deforestation emphasizes the indirect effects of global change
    Water Res. 221 , art. 118721 Volltext (DOI)
  • Borriero, A., Kumar, R., Nguyen, T. V., Fleckenstein, J. H., and Lutz, S. R.: Uncertainty in water transit time estimation with StorAge Selection functions and tracer data interpolation, Hydrol. Earth Syst. Sci. Discuss. [preprint], in review, 2022. https://hess.copernicus.org/preprints/hess-2022-222/

  • Borriero, A., Lutz, S., Nguyen, T., Fleckenstein, J., Kumar, R.: Evaluating the Value of Young Water Fraction for Determining Water Transit Times in Diverse Catchments, AGU Fall Meeting 2022, Chicago, Unites States, 12-16 December 2022, (poster) https://agu.confex.com/agu/fm22/meetingapp.cgi/Paper/1071183
  • Borriero, A., Kumar, R., Nguyen, T., Fleckenstein, J., and Lutz, S.: Evaluating the added value of young water fractions for determining water transit times in diverse catchments, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-4898, 2022. (oral presentation) https://doi.org/10.5194/egusphere-egu22-4898
  • Borriero, A., Lutz, S., Kumar, R., Nguyen, T., Attinger, S., and Fleckenstein, J.H.: Investigating uncertainty in catchment-scale water transit time resulting from sparse tracer data and StorAge Selection functions parameterization. Oral presentation at OZCAR TERENO international conference 2021, Strasbourg, France. (oral presentation)
  • Borriero, A., Lutz, S., Kumar, R., Nguyen, T., Attinger, S., and Fleckenstein, J.H.: Investigating the value of regional water isotope data on transit time and SAS modelling. Online poster at EGU General Assembly 2021. (oral presentation)
  • Determann, M., Musolff, A., Frassl, M., Rinke, K., & Shatwell, T. (September 2021). Emergent Patterns of water and matter fluxes in a coupled catchment-lake model: a case study. Deutsche Gesellschaft für Limnologie- Jahrestagung (Poster presentation).
  • Determann, M., Musolff, A., Frassl, M., Rinke, K., & Shatwell, T. (August 2022). Modelling the effect of variability of inflow nutrient concentrations on lake nutrient retention. 36th Congress of the International Society of Limnology (Poster presentation).
  • Radtke, C.F.; Lutz, S. R.; Müller, C.; Merz, R.; Knöller, K. (2023, April 13.) Modellierte Altersverteilungen des Wassers mittels hochfrequenter Isotopensignaturen. German Isotope Network (Oral presentation)
  • Radtke, C.F.; Lutz, S.R.; Merz, R.; Yang, X.; Müller, C.; Rouhainen, J.; Benettin, P.; Wei, H.; Knöller, K. (2022, June 15.) Nitrate and Water Isotopes as Tools to Resolve Nitrate Travel Times in a Mixed Land Use Catchment. HIGRADE conference (Poster)
  • Radtke, C.F.; Lutz, S.R.; Merz, R.; Yang, X.; Müller, C.; Rouhainen, J.; Benettin, P.; Wei, H.; Knöller, K. (2022, May 27.) Nitrate and Water Isotopes as Tools to Resolve Nitrate Travel Times in a Mixed Land Use Catchment. European Geosciences Union (Oral presentation)
  • Radtke, C.F.; Lutz, S.R.; Merz, R.; Yang, X.; Müller, C.; Rouhainen, J.; Benettin, P.; Wei, H.; Knöller, K. (2022, April 5.) Nitrat- und Wasserisotopen als Instrument zur Entschlüsselung der Verweilzeiten von Nitrat in einem heterogenen Einzugsgebiet. Stable Isotope Network (Oral presentation)
  • Radtke, C.F.; Lutz, S.R.; Merz, R.; Yang, X.; Müller, C.; Rouhainen, J.; Benettin, P.; Wei, H.; Knöller, K. (2022, March 21.) Nitrat- und Wasserisotopen als Instrument zur Entschlüsselung der Verweilzeiten von Nitrat in einem heterogenen Einzugsgebiet. Tag der Hydrologie (Oral presentation) https://doi.org/10.5194/egusphere-egu22-662
  • Saavedra, F., Musolff, A., Freyberg, J. von, Merz, R., Basso, S., & Tarasova, L. (2021, December 14). Disentangling Scatter in Long-Term C-Q Relationships: The Role of Runoff Events. AGU Fall Meeting 2021 (Poster presentation). https://agu.confex.com/agu/fm21/meetingapp.cgi/Paper/912206
  • Saavedra, F., Musolff, A., Freyberg, J. V., Merz, R., Basso, S., & Tarasova, L. (2022). Can runoff event types explain some scatter in nitrate C-Q relationships? (No. EGU22-11933). EGU22. Copernicus Meetings (Oral presentation). https://doi.org/10.5194/egusphere-egu22-11933
  • Saavedra, F., Musolff, A., Freiberg, J. V., Merz, R., Knoll, K., Müller, C., Brunner, M., & Tarasova, L. (2023). Post-drought nitrate mobilization in German catchments     (No. EGU23-7069). EGU23. Copernicus Meetings (Solicited-Oral Presentation). https://doi.org/10.5194/egusphere-egu23-7069
  • Wachholz, A., Dehaspe, J., Ebeling, P., Kumar, R., Musolff, A., Saavedra, F., Winter, C., Yang, S., & Graeber, D. (2023). Stoichiometry on the edge—Humans induce strong imbalances of reactive C:N:P ratios in streams (No. EGU23-13252). EGU23. Copernicus Meetings (Poster presentation). https://doi.org/10.5194/egusphere-egu23-13252
  • Saavedra, F., Musolff, A., Freyberg, J. von, Merz, R., Basso, S., & Tarasova, L. (2021, June 01). Disentangling scatter in C-Q relationships: the role of runoff events types. 4th International Workshop on High-Resolution Water Quality Monitoring and Analysis. Swedish University of Agricultural Sciences, Uppsala (Oral presentation).
  • Saavedra, F., Musolff, A., Freyberg, J. von, Merz, R., Basso, S., & Tarasova, L. (2023, February 15). Nitrato, sequías y eventos de escorrentía. El efecto de los eventos hidrológicos extremos en el transporte de nitrato en las cuencas alemanas. Simposio Internacional de Ciencias Forestales BOSQUE, AGUA Y BIODIVERSIDAD, Universidad Nacional de Loja (Oral presentation).

  • Saavedra, F., Musolff, A., Freyberg, J. von, Merz, R., Basso, S., & Tarasova, L. (2022, November 24). Effects of hydrological events on nitrate mobilization and delivery in German catchments. Seminarios en Recursos y Medio Ambiente Hídrico del Departamento de Ingeniería Civil de la Universidad de Chile.