Tallent Dadi
Contact / address
Tallent Dadi
Postdoc
Department Lake Research
Helmholtz Centre for Environmental Research - UFZ
Brückstr.3a
39114 Magdeburg, Germany
ph. +49 (0) 341 6025 4360
tallent.dadi@ufz.de
Research Interests
My focus is on understanding sediment-water interactions in water bodies and how they affect nutrients and pollutants dynamics. My research interests are; sediment biogeochemistry, paleolimnology, eutrophication, lake restoration, emerging pollutants.
Current Project
EventNut (DFG funded), in collaboration with University of Rostock, Dept. of Aquatic Ecology
Rapid, event-driven shortcuts between benthic nutrients and phytoplankton in inland and coastal waters. The project focuses on investigating the link between sediment nutrient release and phytoplankton physiology by using high temporal resolution, in-situ methods in shallow lakes.
CV / Scientific Career
| 1.2.2021 - 31.1.2024 | DFG-project "EventNut" |
| 2017 - 2021 | Guest-Scientist within Department Lake Research |
| 2013 - 2016 |
PhD student within Department Lake Research (WG Lake Microbiology): "Role of the sediments for dissolved organic carbon (DOC) quantity and quality in drinking water reservoirs" PhD (Doctor rerum naturalium), grade: magna cum laude Martin-Luther-University, Halle-Wittenberg, Institute of Geosciences and Geography |
| 2010 - 2012 |
MSc Environmental and Resource Management, Brandenburg University of Technology, Cottbus, Germany Thesis title: Interconnection between iron biogeochemistry and phosphorus release from sediments of a lake-river system (Lower Havel, Berlin) |
| 2008 - 2010 |
Safety, Health and Environment (SHE) Officer, ARIIFM LLC, Abu Dhabi, United Arab Emirates |
| 2007 - 2008 |
Postgraduate Diploma in Water and Sanitation; Institute of Water and Sanitation Development, Harare, Zimbabwe Thesis title: The impacts of communal water and sanitation facilities on hygiene behaviours in a mining community. A case study of Arcturus Mine |
| 2004 - 2008 | Safety, Health and Environment (SHE) Officer, Metallon Gold Zimbabwe – Arcturus Mine (Arcturus, Zimbabwe) |
| 2001 - 2004 |
BSc Honours Applied Environmental Science, University of Zimbabwe, Harare, Zimbabwe Thesis title: Use of bio-monitoring to determine water quality in a wastewater polluted stream (Marondera, Zimbabwe) |
PhD work
Role of the sediments for dissolved organic carbon (DOC) quantity and quality in drinking water reservoirs
The project is a sub-project of the Trinkwassertalsperren durch gelösten organischen Kohlenstoff (TALKO) project. The project was motivated by the increasing DOC input into European and North American streams over the last two decades. Increasing DOC presents a major problem to potable (drinking) water suppliers by increasing chemical consumption in potable water processing plants. DOC in the aquatic system can also affect light penetration hence some disturbances in the phototrophs biodiversity.
The project focus on quantifying fluxes of DOC between the sediments and water in Harz (Hassel & Rappode) and Muldenberg (Rotmulde) pre-dams in order to understand DOC cycling in the pre-dams. Also of interest is investigating influence of benthic biofilms, sedimentation, and sediment resuspension on DOC fluxes. Quantification of DOC fluxes will further culminate in process specific biochemical experiments to further understand the hot spots in the sediment-water DOC cycle. The focus is not limited to DOC only but we also try to understand the interconnection of the DOC cycle with nutrient (N, P), redox species (Fe, Mn, SO4) cycles. A combination of both in-situ (benthic chamber, sediment trap) and laboratory (sediment core incubation, resuspension) experiments are used. The experiments have a special focus on the effect of redox-changes, anaerobic microbial processes, temperature and light on the DOC cycle.
publications
2023 (8)
- Bao, Q., Liu, C., Friese, K., Dadi, T., Yu, J., Fan, C., Shen, Q. (2023):
Understanding the heavy metal pollution pattern in sediments of a typical small- and medium-sized reservoir in China
Int. J. Environ. Res. Public Health 20 (1), art. 708 10.3390/ijerph20010708 - Dadi, T., Friese, K., Wendt-Potthoff, K., Marcé, R., Koschorreck, M. (2023):
Oxygen dependent temperature regulation of benthic fluxes in reservoirs
Glob. Biogeochem. Cycles 37 (4), e2022GB007647 10.1029/2022GB007647 - Dadi, T., Rinke, K., Balzer, L., Kaligatla, R., Köhler, J., Schubert, H., Shen, Q., Friese, K. (2023):
High-frequency soluble reactive phosphorus in-situ analysis in lakes
Ecol. Indic. 157 , art. 111221 10.1016/j.ecolind.2023.111221 - Dadi, T., Schultze, M., Kong, X., Seewald, M., Rinke, K., Friese, K. (2023):
Sudden eutrophication of an aluminum sulphate treated lake due to abrupt increase of internal phosphorus loading after three decades of mesotrophy
Water Res. 235 , art. 119824 10.1016/j.watres.2023.119824 - 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 10.1021/acs.est.2c07181 - 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 (1.0) [Data set]
Zenodo 10.5281/zenodo.7580961 - Nyamweya, C., Lawrence, T.J., Ajode, M.Z., Smith, S., Achieng, A.O., Barasa, J.E., Masese, F.O., Taabu-Munyaho, A., Mahongo, S., Kayanda, R., Rukunya, E., Kisaka, L., Manyala, J., Medard, M., Otoung, S., Mrosso, H., Sekadende, B., Walakira, J., Mbabazi, S., Kishe, M., Shoko, A., Dadi, T., Gemmell, A., Nkalubo, W. (2023):
Lake Victoria: Overview of research needs and the way forward
J. Gt. Lakes Res. 49 (6), art. 102211 10.1016/j.jglr.2023.06.009 - Plisnier, P.-D., Kayanda, R., MacIntyre, S., Obiero, K., Okello, W., Vodacek, A., Cocquyt, C., Abegaz, H., Achieng, A., Akonkwa, B., Albrecht, C., Balagizi, C., Barasa, J., Bashonga, R.A., Bishobibiri, A.B., Bootsma, H., Borges, A.V., Chavula, G., Dadi, T., De Keyzer, E.L.R., Doran, P.J., Gabagambi, N., Gatare, R., Gemmell, A., Getahun, A., Haambiya, L.H., Higgins, S.N., Hyangya, B.L., Irvine, K., Isumbisho, M., Jonasse, C., Katongo, C., Katsev, S., Keyombe, J., Kimirei, I., Kisekelwa, T., Kishe, M., Koding, S.O.A., Kolding, J., Kraemer, B.M., Limbu, P., Lomodei, E., Mahongo, S.B., Malala, J., Mbabazi, S., Masilya, P.M., McCandless, M., Medard, M., Ajode, Z.M., Mrosso, H.D., Mudakikwa, E.R., Mulimbwa, N., Mushagalusa, D., Muvundja, F., Nankabirwa, A., Nahimana, D., Ngatunga, B.P., Ngochera, M., Nicholson, S., Nshombo, M., Ntakimazi, G., Nyamweya, C., Nyeko, J.I., Olago, D., Olbamo, T., O'Reilly, C.M., Pasche, N., Phiri, H., Raasakka, N., Salyani, A., Sibomana, C., Silsbe, G.M., Smith, S., Sterner, R.W., Thiery, W., Tuyisenge, J., Van der Knaap, M., Van Steenberge, M., van Zwieten, P.A.M., Verheyen, E., Wakjira, M., Walakira, J., Wembo, O.N., Lawrence, T. (2023):
Need for harmonized long-term multi-lake monitoring of African Great Lakes
J. Gt. Lakes Res. 49 (6), art. 101988 10.1016/j.jglr.2022.01.016
2022 (2)
- Dadi, T., von Tümpling, W., Mi, C., Schultze, M., Friese, K. (2022):
Assessment of phosphorus behavior in sediments of Lake Sevan, Armenia
J. Limnol. 81 (s1), art. 2132 10.4081/jlimnol.2022.2132 - Shen, Q., Friese, K., Gao, Q., Yu, C., Kimirei, I.A., Kishe-Machumu, M.A., Zhang, L., Wu, G., Liu, Y., Zhang, J., Mgana, H., Dadi, T., Mpanda, D.W., Chen, S.S. (2022):
Status and changes of water quality in typical near-city zones of three East African Great Lakes in Tanzania
Environ. Sci. Pollut. Res. 29 (23), 34105 - 34118 10.1007/s11356-021-18079-w
2021 (4)
- Kong, X., Seewald, M., Dadi, T., Friese, K., Mi, C., Boehrer, B., Schultze, M., Rinke, K., Shatwell, T. (2021):
Unravelling winter diatom blooms in temperate lakes using high frequency data and ecological modeling
Water Res. 190 , art. 116681 10.1016/j.watres.2020.116681 - Leiser, R., Schumann, M., Dadi, T., Wendt-Potthoff, K. (2021):
Burial of microplastics in freshwater sediments facilitated by iron-organo flocs
Sci. Rep. 11 , art. 24072 10.1038/s41598-021-02748-4 - Ribbe, N., Arinaitwe, K., Dadi, T., Friese, K., von Tümpling, W. (2021):
Trace‑element behaviour in sediments of Ugandan part of Lake Victoria: results from sequential extraction and chemometrical evaluation
Environ. Earth Sci. 80 (8), art. 323 10.1007/s12665-021-09554-1 - Shatwell, T., Kong, X., Seewald, M., Dadi, T., Friese, K., Mi, C., Boehrer, B., Schultze, M., Rinke, K. (2021):
Unravelling winter diatom blooms in temperate lakes using high frequency data and ecological modeling
EGU General Assembly 2021, online, 19–30 Apr 2021
EGUsphere
Copernicus Publications, EGU21-8051 10.5194/egusphere-egu21-8051
2020 (1)
- Dadi, T., Rinke, K., Friese, K. (2020):
Trajectories of sediment-water interactions in reservoirs as a result of temperature and oxygen conditions
Water 12 (4), art. 1065 10.3390/w12041065
2017 (2)
- Dadi, T., Harir, M., Hertkorn, N., Koschorreck, M., Schmitt-Kopplin, P., Herzsprung, P. (2017):
Redox conditions affect dissolved organic carbon quality in stratified freshwaters
Environ. Sci. Technol. 51 (23), 13705 - 13713 10.1021/acs.est.7b04194 - Dadi, T., Wendt-Potthoff, K., Koschorreck, M. (2017):
Sediment resuspension effects on dissolved organic carbon fluxes and microbial metabolic potentials in reservoirs
Aquat. Sci. 79 (3), 749 - 764 10.1007/s00027-017-0533-4
2016 (2)
- Dadi, T., Friese, K., Wendt-Potthoff, K., Koschorreck, M. (2016):
Benthic dissolved organic carbon fluxes in a drinking water reservoir
Limnol. Oceanogr. 61 (2), 445 - 459 10.1002/lno.10224 - Musolff, A., Dadi, T., Fleckenstein, J.H., Kamjunke, N., Morling, K., Koschorreck, M., Oosterwoud, M., Raeke, J., Rinke, K., Reemtsma, T., Tittel, J., Weitere, M., Wendt-Potthoff, K. (2016):
Ergebnisse - Freisetzung und Abbau von DOC: Teilprojekt 1
In: Tittel, J., Kamjunke, N. (Hrsg.)
Belastung von Trinkwassertalsperren durch gelösten organischen Kohlenstoff: Prognose, Vorsorge, Handlungsoptionen (TALKO); Schlussbericht zum Verbundvorhaben
Helmholtz-Zentrum für Umweltforschung GmbH – UFZ; DVGW - Deutsche Vereinigung des Gas- und Wasserfaches e.V.; Technologiezentrum Wasser (TZW) - Außenstelle Dresden; IDUS Biologisch Analytisches Umweltlabor GmbH, Leipzig, Megdeburg, Dresden, Ottendorf-Okrilla, S. 1 - 52
2015 (2)
- Dadi, T., Völkner, C., Koschorreck, M. (2015):
A sediment core incubation method to measure the flux of dissolved organic carbon between sediment and water
J. Soils Sediments 15 (12), 2350 - 2358 10.1007/s11368-015-1213-4 - Grüneberg, B, Dadi, T., Lindim, C., Fischer, H. (2015):
Effects of nitrogen and phosphorus load reduction on benthic phosphorus release in a riverine lake
Biogeochemistry 123 (1-2), 185 - 202 10.1007/s10533-014-0062-3