Sven Frei: Publikationen

Peer reviewed

2023

Elagami, H., Frei, S., Boos, J., Trommer, G., Gilfedder, B.: Quantifying microplastic residence times in lakes using mesocosm experiments and transport modelling. Water Research, 229, 119463 (2023).
doi:10.1016/j.watres.2022.119463

Buenavista, A., Wang, C., Xie, Y., Gilfedder, B., Frei, S., Masque, P., Skrzypek, G., Dogramaci, S., McCallum, J.: Analytical solutions for the advection-dispersion model for radon-222 production and transport in shallow porewater profiles. Journal of Hydrology, 623, 129575 (2023).
doi:10.1016/j.jhydrol.2023.129575

Gilfedder, B., Elagami, H., Boos, J., Brehm, J., Schott, M., Witt, L., Laforsch, C., Frei, S.: Filter feeders are key to small microplastic residence times in stratified lakes : A virtual experiment. Science of the Total Environment, 890, 164293 (2023).
doi:10.1016/j.scitotenv.2023.164293

Dichgans, F., Boos, J., Ahmadi, P., Frei, S., Fleckenstein, J.: Integrated Numerical Modeling to Quantify Transport and Fate of Microplastics in the Hyporheic Zone. Water Research, 243, 120349 (2023).
doi:10.1016/j.watres.2023.120349

Peiffer, S., Maisch, M., Kappler, A., Schmidt, C., Mansor, M., Obst, M., Frei, S.: Kinetic constraints for the formation of microniches for microaerophilic Fe(II) oxidation. Geochimica et Cosmochimica Acta, (2023).
doi:10.1016/j.gca.2023.11.006

Zill, J., Siebert, C., Rödiger, T., Schmidt, A., Gilfedder, B., Frei, S., Schubert, M., Weitere, M., Mallast, U.: A way to determine groundwater contributions to large river systems: The Elbe River during drought conditions. Journal of Hydrology: Regional Studies, 50, 101595 (2023).
doi:10.1016/j.ejrh.2023.101595

2022

Ahmadi, P., Elagami, H., Dichgans, F., Schmidt, C., Gilfedder, B., Frei, S., Peiffer, S., Fleckenstein, J.: Systematic Evaluation of Physical Parameters affecting the Terminal Settling Velocity of Microplastic Particles in Lakes using CFD. Frontiers in Environmental Science, 10, 875220 (2022).
doi:10.3389/fenvs.2022.875220

Kaule, L., Frei, S.: Analysis of drought conditions and their impacts in a headwater stream in the Central European lower mountain ranges. Regional Environmental Change, 22, 82 (2022).
doi:10.1007/s10113-022-01926-y

Shabbir, S., Faheem, M., Dar, A., Ali, N., Kerr, P., Yu, Z., Li, Y., Frei, S., Albasher, G., Gilfedder, B.: Enhanced periphyton biodegradation of endocrine disrupting hormones and microplastic : Intrinsic reaction mechanism, influential humic acid and microbial community structure elucidation. Chemosphere, 293, 133515 (2022).
doi:10.1016/j.chemosphere.2022.133515

Brehm, J., Wilde, M., Reiche, L., Leitner, L., Petran, B., Meinhart, M., Wieland, S., Ritschar, S., Schott, M., Boos, J., Frei, S., Kress, H., Senker, J., Greiner, A., Fröhlich, T., Laforsch, C.: In-depth characterization revealed polymer type and chemical content specific effects of microplastic on Dreissena bugensis. Journal of Hazardous Materials, 437, 129351 (2022).
doi:10.1016/j.jhazmat.2022.129351

Elagami, H., Ahmadi, P., Fleckenstein, J., Frei, S., Obst, M., Agarwal, S., Gilfedder, B.: Measurement of microplastic settling velocities and implications for residence times in thermally stratified lakes. Limnology and Oceanography, 67(4), 934-945 (2022).
doi:10.1002/lno.12046

2021

Lu, T., Gilfedder, B., Peng, H., Niu, G., Frei, S.: Effects of clay minerals on the transport of nanoplastics through water-saturated porous media. Science of the Total Environment, 796, 148982 (2021).
doi:10.1016/j.scitotenv.2021.148982

Katona, T., Gilfedder, B., Frei, S., Bücker, M., Flores-Orozco, A.: High-resolution induced polarization imaging of biogeochemical carbon-turnover hot spots in a peatland. Biogeosciences Discussions, 44 S. (2021).
doi:10.5194/bg-2020-438

Frei, S., Gilfedder, B.: Quantifying residence times of bank filtrate : A novel framework using radon as a natural tracer. Water Research, 201, 117376 (2021).
doi:10.1016/j.watres.2021.117376

Lu, T., Gilfedder, B., Peng, H., Peiffer, S., Papastavrou, G., Ottermann, K., Frei, S.: Relevance of Iron Oxyhydroxide and Pore Water Chemistry on the Mobility of Nanoplastic Particles in Water-Saturated Porous Media Environments. Water, Air, & Soil Pollution, 232, 168 (2021).
doi:10.1007/s11270-021-05125-z

Frei, S., Gilfedder, B.: Stellungnahme zum Kommentar von Wilfried Uhlmann und Carolin Pezenka zum Beitrag "Quantifizierung lokaler Grundwassereintritte in die Spree und deren Bedeutung für die Verockerungsproblematik in der Lausitz" in Grundwasser 25 (2020), 3, 231–241. Grundwasser, 26, 313-317 (2021).
doi:10.1007/s00767-021-00485-z

Glaser, C., Frei, S., Massmann, G., Gilfedder, B.: Tidal creeks as hot-spots for hydrological exchange in a coastal landscape. Journal of Hydrology, 597, 126158 (2021).
doi:10.1016/j.jhydrol.2021.126158

Boos, J., Gilfedder, B., Frei, S.: Tracking Microplastics Across the Streambed Interface : Using Laser‐Induced‐Fluorescence to Quantitatively Analyze Microplastic Transport in an Experimental Flume. Water Resources Research, 57(12), e2021WR031064 (2021).
doi:10.1029/2021WR031064

Gilfedder, B., Waska, H., Wismeth, F., Frei, S.: Using heat as a tracer to map and quantify water infiltration and exfiltration along a complex high energy beach face. Estuarine, Coastal and Shelf Science, 250, 107140 (2021).
doi:10.1016/j.ecss.2020.107140

2020

Schaller, J., Frei, S., Rohn, L., Gilfedder, B.: Amorphous Silica Controls Water Storage Capacity and Phosphorus Mobility in Soils. Frontiers in Environmental Science, 8, 94 (2020).
doi:10.3389/fenvs.2020.00094

Glaser, C., Schwientek, M., Junginger, T., Gilfedder, B., Frei, S., Werneburg, M., Zwiener, C., Zarfl, C.: Comparison of environmental tracers including organic micropollutants as groundwater exfiltration indicators into a small river of a karstic catchment. Hydrological Processes, 34(24), 4712-4726 (2020).
doi:10.1002/hyp.13909

Frei, S., Wismeth, F., Gilfedder, B.: Quantifizierung lokaler Grundwassereintritte in die Spree und deren Bedeutung für die Verockerungsproblematik in der Laustiz. Grundwasser, 25, 231-241 (2020).
doi:10.1007/s00767-020-00452-0

2019

Gilfedder, B., Cartwright, I., Hofmann, H., Frei, S.: Explicit modelling of Radon-222 in HydroGeoSphere during steady state and dynamic transient storage. Groundwater, 57(1), 36-47 (2019).
doi:10.1111/gwat.12847

Durejka, S., Frei, S., Gilfedder, B.: A Method for Long-Term High Resolution 222-Radon Measurements Using a New Hydrophobic Capillary Membrane System. Journal of Environmental Radioactivity, 208-209, 105980 (2019).
doi:10.1016/j.jenvrad.2019.05.012

Frei, S., Piehl, S., Gilfedder, B., Löder, M., Krutzke, J., Wilhelm, L., Laforsch, C.: Occurence of microplastics in the hyporheic zone of rivers. Scientific Reports, 9, 15256 (2019).
doi:10.1038/s41598-019-51741-5

Frei, S., Durejka, S., Le Lay, H., Thomas, Z., Gilfedder, B.: Quantification of Hyporheic Nitrate Removal at the Reach Scale : Exposure Times vs. Residence Times. Water Resources Research, 55(11), 9808-9825 (2019).
doi:10.1029/2019WR025540

2018

Frei, S., Zlotnik, V., Grant, S., Azizian, M., Toundykov, D.: Analytical modeling of hyporheic flow for in-stream bedforms : Perturbation method and implementation. Environmental Modelling & Software, 111, 375-385 (2018).
doi:10.1016/j.envsoft.2018.09.015

2017

Pittroff, M., Frei, S., Gilfedder, B.: Quantifying nitrate and oxygen reduction rates in the hyporheic zone using 222Rn to upscale biogeochemical turnover in rivers. Water Resources Research, 53(1), 563-579 (2017).
doi:10.1002/2016WR018917

2016

Thomas, Z., Rousseau-Gueutin, P., Kolbe, T., Abbott, B., Marçais, J., Bishop, K., Peiffer, S., Frei, S., Pichelin, P., Pinay, G., de Dreuzy, J.: Constitution of a catchment virtual observatory for sharing flow and transport models outputs. Journal of Hydrology, 543, Part A, 59-66 (2016).
doi:10.1016/j.jhydrol.2016.04.067

Frei, S., Peiffer, S.: Exposure times rather than residence times control redox transformation efficiencies in riparian wetlands. Journal of Hydrology, 543, Part A, 182-196 (2016).
doi:10.1016/j.jhydrol.2016.02.001

Glaser, B., Klaus, J., Frei, S., Frentress, J., Pfister, L., Hopp, L.: On the value of surface saturated area dynamics mapped with thermal infrared imagery for modeling the hillslope-riparian-stream continuum. Water Resources Research, 52(10), 8317-8342 (2016).
doi:10.1002/2015WR018414

2015

Liggett, J., Partington, D., Frei, S., Werner, A., Simmons, C., Fleckenstein, J.: An exploration of coupled surface-subsurface solute transport in a fully integrated catchment model. Journal of Hydrology, 529, Part 3, 969-979 (2015).
doi:10.1016/j.jhydrol.2015.09.006

Frei, S., Gilfedder, B.: FINIFLUX : An implicit finite element model for quantification of groundwater fluxes and hyporheic exchange in streams and rivers using radon. Water Resources Research, 51(8), 6776-6786 (2015).
doi:10.1002/2015WR017212

Gilfedder, B., Frei, S., Hofmann, H., Cartwright, I.: Groundwater discharge to wetlands driven by storm and flood events: Quantification using continuous Radon-222 and electrical conductivity measurements and dynamic mass-balance modelling. Geochimica et Cosmochimica Acta, 165, 161-177 (2015).
doi:10.1016/j.gca.2015.05.037

2014

Bartsch, S., Frei, S., Ruidisch, M., Shope, C., Peiffer, S., Kim, B., Fleckenstein, J.: River-aquifer exchange fluxes under monsoonal climate conditions. Journal of Hydrology, 509, 601-614 (2014).
doi:10.1016/j.jhydrol.2013.12.005

2013

Strohmeier, S., Knorr, K., Reichert, M., Frei, S., Fleckenstein, J., Peiffer, S., Matzner, E.: Concentrations and fluxes of dissolved organic carbon in runoff from a forested catchment: Insights from high frequency measurements. Biogeosciences, 10, 905-916 (2013).
doi:10.5194/bg-10-905-2013

Partington, D., Brunner, P., Frei, S., Simmons, C., Werner, A., Therrien, R., Maier, H., Dandy, G., Fleckenstein, J.: Interpreting streamflow generation mechanisms from integrated surface-subsurface flow models of a riparian wetland and catchment. Water Resources Research, 49(9), 5501-5519 (2013).
doi:10.1002/wrcr.20405

Frei, S., Fleckenstein, J.: Representing effects of micro-topography on runoff generation and sub-surface flow patterns by using superficial rill/depression storage height variations. Environmental Modelling & Software, 52, 5-18 (2013).

2012

Frei, S., Knorr, K., Peiffer, S., Fleckenstein, J.: Surface micro-topography causes hot spots of biogeochemical activity in wetland systems : a virtual modeling experiment. Journal of Geophysical Research: Biogeosciences, 117(G4), G00N12 (2012).
doi:10.1029/2012JG002012

2010

Frei, S., Fleckenstein, J., Lischeid, G.: Effects of micro-topography on surface-subsurface exchange and runoff generation in a virtual riparian wetland – a modeling study. Advances in Water Resources, 33(11), 1388-1401 (2010).
doi:10.1016/j.advwatres.2010.07.006

2009

Frei, S., Fleckenstein, J., Kollet, S., Maxwell, R.: Patterns and dynamics of river-aquifer exchange with variably-saturated flow using a fully-coupled model. Journal of Hydrology, 375(3-4), 383-393 (2009).
doi:10.1016/j.jhydrol.2009.06.038

Books and Book sections

2017

Lischeid, G., Frei, S., Huwe, B., Bogner, C., Lüers, J., Babel, W., Foken, T.: Catchment Evapotranspiration and Runoff. In: Thomas Foken (eds.): Energy and Matter Fluxes of a Spruce Forest Ecosystem. - Cham : Springer, 2017. - 355-375.
doi:10.1007/978-3-319-49389-3_15

2011

Fleckenstein, J., Frei, S., Knorr, K.: Modelling interactions between hydrologic dynamics and biogeochemical processes in a riparian wetland of a low-order stream. In: Abesser, Corinna (Hrsg.): Conceptual and modelling studies of integrated groundwater, surface water, and ecological systems : proceedings of Symposium H01, held during IUGG2011 in Melbourne, Australia, July 2011. - Wallingford : IAHS Publ., 2011. - 87-92.

Other publications

2013

Ruidisch, M., Bartsch, S., Kettering, J., Huwe, B., Frei, S.: The effect of fertilizer best management practices on nitrate leaching in a plastic mulched ridge cultivation system. Agriculture, Ecosystems & Environment, 169, 21-32 (2013).
doi:10.1016/j.agee.2013.02.006

Frei, S.: Interactions between hydrology and biogeochemistry within riparian wetlands. - Bayreuth: 2013. - 249 S. p.
(Thesis, 2013, Universität Bayreuth, Fakultät für Biologie, Chemie und Geowissenschaften)