David Clemens M.Sc.

PhD candidate

Research Devision 2: Marine Biogeochemistry Link
Research Unit: Marine Geosystems Link
Working Group: Benthic Biogeochemistry Link

Contact

+49 431 600-2267
dclemens(at)geomar.de

Room 214, Building 8D
GEOMAR Helmholtz Centre for Ocean Research Kiel
Wischhofstraße 1-3
24148 Kiel
Germany
Map

ResearchGate

Education

since 2016 PhD candidate at GEOMAR Helmholtz Centre for Ocean Research Kiel
2014 – 2016 Master Marine Geosciences at the Christian-Albrechts-Universität zu Kiel
2011 – 2014 Bachelor Geosciences at the Christian-Albrechts-Universität zu Kiel

Theses

Master Thesis (2016)
The geological structure of Amrum Bank (North Sea) based on parametric sediment echosounder data
supervisors: Dr. Klaus Schwarzer, Prof. Dr. Karl Stattegger

Bachelor Thesis (2014)
Quantifying benthic organic matter decomposition in the Mauritanian oxygen minimum zone (18° N)
supervisors: Dr. Stefan Sommer, Prof. Dr. Klaus Wallmann

Projects

SFB 754 (since 2016)
SFB 754 – Climate-Biogeochemistry Interactions in the Tropical Ocean
role: PhD candidate in subproject B6
more...

STopP (2016)
STopP – from sediment to top predator – influence of sea floor properties on benthos and benthivorous birds
role: Master's student
more...

Expeditions

2014 RV Meteor (M107), eastern tropical North Atlantic
2015 RV Poseidon (POS487), Gotland Basin, Baltic Sea
2017 RV Meteor (M136), eastern tropical South Pacific
2017 RV Meteor (M137), eastern tropical South Pacific

Publications

Jump to: 2019 | 2018 | 2017
Number of items: 9.

2019

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Lüdke, J. , Dengler, M. , Sommer, S., Clemens, D. , Thomsen, S. , Krahmann, G. , Dale, A. W. , Achterberg, E. P. and Visbeck, M. (2019) Influence of intraseasonal eastern boundary circulation variability on hydrography and biogeochemistry off Peru. Open Access Ocean Science Discussions . DOI 10.5194/os-2019-93.

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Lüdke, J. , Clemens, D. , Dengler, M. , Krahmann, G. , Sommer, S., Thomsen, S. and Visbeck, M. (2019) Influence of eastern boundary circulation variability on hydrography and biogeochemistry off Peru in early 2017. [PICO] In: EGU General Assembly 2019. , 07.-12.04.2019, Vienna, Austria .

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Glock, N., Roy, A. S., Romero, D., Wein, T., Weissenbach, J., Revsbech, N. P., Høgslund, S., Clemens, D. , Sommer, S. and Dagan, T. (2019) Metabolic preference of nitrate over oxygen as an electron acceptor in foraminifera from the Peruvian oxygen minimum zone. Open Access PNAS Proceedings of the National Academy of Sciences of the United States of America, 116 (8). pp. 2860-2865. DOI 10.1073/pnas.1813887116.

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Schroller-Lomnitz, U., Hensen, C., Dale, A. W. , Scholz, F., Clemens, D. , Sommer, S., Noffke, A. and Wallmann, K. (2019) Dissolved benthic phosphate, iron and carbon fluxes in the Mauritanian upwelling system and implications for ongoing deoxygenation. Deep Sea Research Part I: Oceanographic Research Papers, 143 . pp. 70-84. DOI 10.1016/j.dsr.2018.11.008.

2018


Clemens, D. , Lüdke, J. , Dengler, M. , Dale, A. W. , Wallmann, K. and Sommer, S. (2018) Benthic N-cycling in the Peruvian Oxygen Minimum Zone in relation to variable bottom water redox conditions. [Talk] In: Ocean Deoxygenation Conference. , 03.09.-07.09.2018, Kiel, Germany .


Lomnitz, U., Scholz, F., Dale, A. W. , Sommer, S., Plaß, A., Clemens, D. , Stolpovsky, K., Wallmann, K. and Hensen, C. (2018) A benthic phosphorus budget for the Peruvian oxygen minimum zone. [Talk] In: Ocean Deoxygenation Conference. , 03.09.-07.09.2018, Kiel, Germany .


Lüdke, J. , Clemens, D. , Dengler, M. , Krahmann, G. , Schmidtko, S. , Sommer, S., Thomsen, S. and Visbeck, M. (2018) Intra-seasonal variability of the eastern boundary circulation off Peru and biogeochemical consequences. [Talk] In: Ocean Deoxygenation Conference 2018. , 03.-07.09.2018, Kiel, Germany .


Stolpovsky, K., Sommer, S., Roy, A. S., Scholz, F., Plaß, A., Wallmann, K. , Lomnitz, U., Clemens, D. , Hensen, C. and Dale, A. W. (2018) An experimental and modeling investigation of sediment nutrient cycling during further deoxygenation on the Peruvian margin. [Poster] In: Ocean Deoxygenation Conference. , 03.09.-07.09.2018, Kiel, Germany .

2017

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Sommer, S., Clemens, D. , Yücel, M., Pfannkuche, O., Hall, P. O. J., Almroth-Rosell, E., Schulz-Vogt, H. N. and Dale, A. W. (2017) Major Bottom Water Ventilation Events Do Not Significantly Reduce Basin-Wide Benthic N and P Release in the Eastern Gotland Basin (Baltic Sea). Open Access Frontiers in Marine Science, 4 (18). DOI 10.3389/fmars.2017.00018.

This list was generated on Fri Sep 20 20:32:34 2019 CEST.