Summaries of and links to publications can be found at ORCID, ResearchID or Scholar (Google). More publications are listed on Research Gate.


Kisi, Ozgur; Azamathulla, Hazi Mohammad; Cevat, Fatih; Kulls, Christoph; Kuhdaragh, Mehdi; Fuladipanah, Mehdi

Enhancing river flow predictions: Comparative analysis of machine learning approaches in modeling stage-discharge relationship Journal Article

In: Results in Engineering, vol. 22, pp. 102017, 2024, ISSN: 2590-1230.

Abstract | Links | BibTeX

Ola, Ibukun; Drebenstedt, Carsten; Burgess, Robert M.; Mensah, Martin; Hoth, Nils; Kuells, Christoph

Remediating Oil Contamination in the Niger Delta Region of Nigeria: Technical Options and Monitoring Strategies Journal Article

In: The Extractive Industries and Society, vol. 17, pp. 101405, 2024, ISSN: 2214-790X.

Abstract | Links | BibTeX

Krüger, Nina; Külls, Christoph; Bruggeman, Adriana; Christofi, Christos

Groundwater recharge estimation in Mediterranean mountain environments by isotope profiles – Partitioning of macropore and matrix flow Journal Article

In: Journal of Hydrology, pp. 131352, 2024, ISSN: 0022-1694.

Abstract | Links | BibTeX

Ola, I.; Drebenstedt, C.; Burgess, R. M.; Mensah, M.; Hoth, N.; Okoroafor, P.; Külls, C.

Assessing petroleum contamination in parts of the Niger Delta based on a sub-catchment delineated field assessment Journal Article

In: Environmental Monitoring and Assessment, vol. 196, no. 6, pp. 585, 2024, ISSN: 1573-2959.

Abstract | Links | BibTeX


Eliades, M.; Bruggeman, A.; Djuma, H.; Christofi, C.; Kuells, C.

Quantifying Evapotranspiration and Drainage Losses in a Semi-Arid Nectarine (Prunus persica var. nucipersica) Field with a Dynamic Crop Coefficient (Kc) Derived from Leaf Area Index Measurements Journal Article

In: Water, vol. 14, no. 5, 2022, ISSN: 2073-4441.

Abstract | Links | BibTeX


Christofi, C.; Bruggeman, A.; Külls, C.; Constantinou, C.

Hydrochemical evolution of groundwater in gabbro of the Troodos Fractured Aquifer. A comprehensive approach Journal Article

In: Applied Geochemistry, vol. 114, pp. 104524, 2020.

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Christofi, C.; Bruggeman, A.; Külls, C.; Constantinou, C.

Isotope hydrology and hydrogeochemical modeling of Troodos Fractured Aquifer, Cyprus: The development of hydrogeological descriptions of observed water types Journal Article

In: Applied Geochemistry, vol. 123, pp. 104780, 2020, ISSN: 0883-2927.

Abstract | BibTeX

Mahindawansha, A.; Külls, C.; Kraft, P.; Breuer, L.

Investigating unproductive water losses from irrigated agricultural crops in the humid tropics through analyses of stable isotopes of water Journal Article

In: Hydrology and Earth System Sciences, vol. 24, no. 7, pp. 3627–3642, 2020.

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Joseph, J.; Külls, C.; Arend, M.; Schaub, M.; Hagedorn, F.; Gessler, A.; Weiler, M.

Application of a laser-based spectrometer for continuous in situ measurements of stable isotopes of soil CO2 in calcareous and acidic soils Journal Article

In: Soil, vol. 5, no. 1, pp. 49–62, 2019.

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Gaj, M.; Beyer, M.; Hamutoko, J.; Uugulu, S.; Wanke, H.; Koeniger, P.; Külls, C.; Lohe, C.; Himmelsbach, T.

How do soil types affect stable isotope ratios of 2H and 18O under evaporation: A Fingerprint of the Niipele subbasin of the Cuvelai-Etosha basin, Namibia Proceedings Article

In: EGU Geophysical Abstracts, pp. 5890, 2014.


Hamutoko, J.; Mapani, B.; Ellmies, R.; Bittner, A.; Külls, C.

A fingerprinting method for the identification of uranium sources in alluvial aquifers: An example from the Khan and Swakop Rivers, Namibia Journal Article

In: Physics and Chemistry of the Earth, Parts A/B/C, vol. 72, pp. 34–42, 2014.


Müller, M.; Alaoui, A.; Külls, C.; Leistert, H.; Meusburger, K.; Stumpp, C.; Weiler, M.; Alewell, C.

Tracking water pathways in steep hillslopes by δ18O depth profiles of soil water Journal Article

In: Journal of hydrology, vol. 519, pp. 340–352, 2014.

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Baram, S.; Ronen, Z.; Kurtzman, D.; Külls, C.; Dahan, O.

Desiccation-crack-induced salinization in deep clay sediment Journal Article

In: Hydrology and Earth System Sciences, vol. 17, no. 4, pp. 1533, 2013.

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Dávila, P.; Külls, C.; Weiler, M.

A toolkit for groundwater mean residence time interpretation with gaseous tracers Journal Article

In: Computers & Geosciences, vol. 61, pp. 116–125, 2013.


Klaus, J.; Zehe, E.; Elsner, M.; Külls, C.; McDonnell, J. J.

Macropore flow of old water revisited: experimental insights from a tile-drained hillslope Journal Article

In: Hydrology and Earth System Sciences, vol. 17, no. 1, pp. 103, 2013.

Links | BibTeX


Garvelmann, J.; Külls, C.; Weiler, M.

A porewater-based stable isotope approach for the investigation of subsurface hydrological processes Journal Article

In: Hydrology & Earth System Sciences, vol. 16, no. 2, 2012.

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Benito, G.; Rohde, R.; Seely, M.; Külls, C.; Dahan, O.; Enzel, Y.; Todd, S.; Botero, B.; Morin, E.; Grodek, T.

Management of alluvial aquifers in two southern African ephemeral rivers: implications for IWRM Journal Article

In: Water Resources Management, vol. 24, no. 4, pp. 641–667, 2010.

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Morin, E.; Grodek, T.; Dahan, O.; Benito, G.; Külls, C.; Jacoby, Y.; Langenhove, G. Van; Seely, M.; Enzel, Y.

Flood routing and alluvial aquifer recharge along the ephemeral arid Kuiseb River, Namibia Journal Article

In: Journal of Hydrology, vol. 368, no. 1-4, pp. 262–275, 2009.

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Dahan, O.; Tatarsky, B.; Enzel, Y.; Külls, C.; Seely, M.; Benito, G.

Dynamics of flood water infiltration and ground water recharge in hyperarid desert Journal Article

In: Groundwater, vol. 46, no. 3, pp. 450–461, 2008.

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Klaus, J.; Külls, C.; Dahan, O.

Evaluating the recharge mechanism of the Lower Kuiseb Dune area using mixing cell modeling and residence time data Journal Article

In: Journal of Hydrology, vol. 358, no. 3-4, pp. 304–316, 2008.

Links | BibTeX


Zagana, E.; Obeidat, M.; Külls, C.; Udluft, P.

Chloride, hydrochemical and isotope methods of groundwater recharge estimation in eastern Mediterranean areas: a case study in Jordan Journal Article

In: Hydrological Processes: An International Journal, vol. 21, no. 16, pp. 2112–2123, 2007.

Links | BibTeX


Klock, H.; Külls, C.; Udluft, P.

Quantification of Groundwater Recharge-Estimating recharge values using hydrochemical and geological data: A case study from the semiarid Kalahari catchment of northern Namibia Journal Article

In: IAHS Publications-Series of Proceedings and Reports-Intern Assoc Hydrological Sciences, vol. 269, pp. 25–32, 2001.


Klock, H.; Külls, C.; Udluft, P.

Estimating recharge values using hydrochemical and geological data: a case study from the Proceedings Article

In: Impact of Human Activity on Groundwater Dynamics: Proceedings of an International Symposium (Symposium S3) Held During the Sixth Scientific Assembly of the International Association of Hydrological Sciences (IAHS) at Maastricht, The Netherlands, from 18 t, pp. 25, 2001.



Klock, H.; Külls, C.; Udluft, P.

Estimation of relative recharge values for the northern Kalahari catchment, Namibia Journal Article

In: Journal of African Earth Sciences, vol. 30, no. 4, pp. 47–48, 2000.



Külls, C.; Leibundgut, C.; Schwarz, U.; Schick, A. P.

Channel infiltration study using dye tracers Journal Article

In: IAHS Publications-Series of Proceedings and Reports-Intern Assoc Hydrological Sciences, vol. 232, pp. 429–436, 1995.


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